diff --git a/Detector/DetCRD/CMakeLists.txt b/Detector/DetCRD/CMakeLists.txt
index f735b3d189c294a1307da7795f063988c104523f..e99d07895d773098002bf810c9f402f91e28561a 100644
--- a/Detector/DetCRD/CMakeLists.txt
+++ b/Detector/DetCRD/CMakeLists.txt
@@ -21,6 +21,8 @@ gaudi_add_module(DetCRD
                          src/Calorimeter/RotatedPolyhedraBarrelCalorimeter_v01_geo.cpp
                          src/Calorimeter/RotatedCrystalCalorimeter_v01_geo.cpp
                          src/Other/CRDBeamPipe_v01_geo.cpp
+                         src/Muon/Muon_Barrel_v01.cpp
+                         src/Muon/Muon_Endcap_v01.cpp
                          src/Tracker/SiTrackerSkewRing_v01_geo.cpp
                          src/Tracker/SiTrackerStaggeredLadder_v01_geo.cpp
 
diff --git a/Detector/DetCRD/compact/CRD_common_v01/Muon_Barrel_v01.xml b/Detector/DetCRD/compact/CRD_common_v01/Muon_Barrel_v01.xml
new file mode 100644
index 0000000000000000000000000000000000000000..d392b47abecfd0df1e66f3e995a11b3cd972b2f8
--- /dev/null
+++ b/Detector/DetCRD/compact/CRD_common_v01/Muon_Barrel_v01.xml
@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<lccdd>
+ 
+  <info name="Muon_Barrel"
+	title="Test with A Single Muon Barrel"
+	author="Zibing Bai"
+	url="http://cepcgit.ihep.ac.cn"
+	status="development"
+	version="v01">
+    <comment>Test with A Single Muon Barrel</comment>        
+  </info>
+  <define>
+    <constant name="env_num" value="2"/>
+    <constant name="Fe_num" value="12"/>
+    <constant name="superlayer_num" value="6"/>
+    <constant name="strip_num_0" value="40"/>
+    <constant name="strip_num_1" value="48"/>
+    <constant name="strip_num_2" value="62"/>
+    <constant name="strip_num_3" value="74"/>
+    <constant name="strip_num_4" value="84"/>
+    <constant name="strip_num_5" value="96"/>
+    <constant name="strip_num" value="100"/>
+
+    <constant name="Fe_y" value="strip_z+2*surf+Fe_gap"/>
+    <constant name="Fe_z" value="Fe_x1"/>
+    <constant name="Fe_posx" value="-1*Fe_x1"/>
+
+    <constant name="env_y" value="Fe_y"/>
+    <constant name="env_posy" value="0.5*env_y"/>
+
+    <constant name="layer_init" value="-21.5*cm"/>
+    <constant name="layer_gap" value="12.5*cm"/>
+    <constant name="superlayer_air" value="0.1*cm"/>
+    <constant name="superlayer_Al" value="0.5*superlayer_air"/>
+
+    <constant name="superlayer_y" value="2*strip_y+2*superlayer_air"/>
+    <constant name="superlayer_z" value="strip_z+2*surf+2*superlayer_air"/>
+
+    <constant name="Al_posx" value="0"/>
+    <constant name="Al_posy" value="0"/>
+    <constant name="Al_posz" value="0"/>
+
+  </define>
+
+  <detectors>
+    <detector id="0" name="Muon_Barrel_v01" type="Muon_Barrel_v01" readout="MuonBarrelCollection" vis="VisibleBlank_Muon" material="Air">
+      <material name="Air"/>
+      <position x="0" y="0" z="0"/>
+      <dimensions dx="0.5*world_x" dy="0.5*world_y" dz="0.5*world_z"/>
+      <module id="Fe_num" name="env" type="env" vis="InvisibleWithChildren_Muon" material="Air">
+        <position x="0" y="env_posy" z="0"/>
+        <dimensions dy="0.5*env_y"/>
+        <module id="0" name="Fe" type="Fe" vis="VisibleMental_Muon" material="Iron">
+          <material name="Iron"/>
+          <position x="Fe_posx" y="0"/>
+          <dimensions x1="0.5*Fe_x1" y1="0.5*Fe_y" y2="0.5*Fe_y" dz="0.5*Fe_z"/>
+          <module id="superlayer_num" name="Superlayer" type="Superlayer" vis="VisibleBlank_Muon" material="Air">
+            <module id="0" name="Layer_Al" type="Layer_Al" vis="VisibleMental_Muon" material="Aluminum">
+              <material name="Aluminum"/>
+              <position x="0" y="0" z="0"/>
+              <module id="0" name="Stripe" type="Stripe" vis="VisibleBlank_Muon" material="Air">
+                <material name="Air"/>
+                <dimensions dx="0.5*strip_x"  dy="0.5*strip_y"  dz="0.5*strip_z+SiPM_z"/>
+                <module id="0" type="surface" name="surface" vis="VisibleGreen_Muon" material="BC420">
+                  <position x="0" y="0" z="0"/>
+                  <dimensions dx="0.5*surface_x" dy="0.5*surface_y" dz="0.5*surface_z"/>
+                  <section name="cut1" vis="VisibleBlank_Muon" material="Air">
+                    <position x="cut1_posx" y="cut1_posy" z="cut1_posz"/>
+                    <dimensions dx="0.5*cut1_x" dy="0.5*cut1_y" dz="0.5*cut1_z"/>
+                  </section>
+                </module>
+                <module id="1" type="BC420" name="BC420" vis="VisibleGreen_Muon" material="BC420">
+                  <position x="0" y="0" z="0"/>
+                  <dimensions dx="0.5*BC420_x" dy="0.5*BC420_y" dz="0.5*BC420_z"/>
+                  <section name="cut3" vis="VisibleBlank_Muon" material="Air">
+                    <position x="cut3_posx" y="cut3_posy" z="cut3_posz"/>
+                    <dimensions rmin="0" rmax="cut3_rmax" dz="0.5*cut3_z"/>
+                    <section name="cut2" vis="VisibleBlank_Muon" material="Air">
+                      <position x="cut2_posx" y="cut2_posy" z="cut2_posz"/>
+                      <dimensions dx="0.5*cut2_x" dy="0.5*cut2_y" dz="0.5*cut2_z"/>
+                    </section>
+                  </section>
+                </module>
+                <section id="0" type="cladding" name="cladding" vis="VisibleBlue_Muon" material="Pethylene1">
+                  <position x="0" y="0" z="0"/>
+                  <dimensions rmin="cladding_rmin" rmax="cladding_rmax" dz="0.5*cladding_z"/>
+                </section>
+                <section id="1" type="core" name="core" vis="VisibleRed_Muon" material="Pethylene2">
+                  <position x="0" y="0" z="0"/>
+                  <dimensions rmin="0" rmax="core_rmax" dz="0.5*core_z"/>
+                </section>
+                <module id="2" type="SiPM" name="SiPM" vis="VisibleBlue_Muon" material="Air">
+                  <position x="SiPM_posx" y="SiPM_posy" z="SiPM_posz"/>
+                  <dimensions dx="0.5*SiPM_x" dy="0.5*SiPM_y" dz="0.5*SiPM_z"/>
+                </module>
+              </module>
+            </module>
+          </module>
+        </module>
+      </module>
+    </detector>
+  </detectors>
+
+  <readouts>
+    <readout name="MuonBarrelCollection">
+      <id>Env:2,Fe:2,Superlayer:2,Layer:2,Stripe:10:3,SiPM:2</id>
+    </readout>
+  </readouts>
+
+</lccdd>
diff --git a/Detector/DetCRD/compact/CRD_common_v01/Muon_Endcap_v01.xml b/Detector/DetCRD/compact/CRD_common_v01/Muon_Endcap_v01.xml
new file mode 100644
index 0000000000000000000000000000000000000000..71e396de8205b487de320e6ef80cdd9bb73a2eef
--- /dev/null
+++ b/Detector/DetCRD/compact/CRD_common_v01/Muon_Endcap_v01.xml
@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<lccdd>
+ 
+  <info name="Muon_Endcap"
+	title="Test with Two Single Muon Endcaps"
+	author="Zibing Bai"
+	url="http://cepcgit.ihep.ac.cn"
+	status="development"
+	version="v01">
+    <comment>Test with Two Single Muon Endcaps</comment>        
+  </info>
+  <define>
+    <constant name="env_num_endcap" value="4"/>
+    <constant name="layer_num" value="2"/>
+    <constant name="strip_num_endcap" value="146"/>
+    <constant name="strip_num_cut" value="13"/>
+    <constant name="env_rmin" value="52*cm"/>
+    <constant name="env_z" value="3*cm"/>
+    <constant name="multiple" value="1.05"/>
+
+    <constant name="envelope_halfZ" value="strip_z+2*surf+Fe_gap+env_z"/>
+    <constant name="env_posy_endcap" value="strip_z+2*surf+Fe_gap+0.5*env_z"/>
+  </define>
+
+  <detectors>
+    <detector id="2" name="Muon_Endcap_v01" type="Muon_Endcap_v01" readout="MuonEndcapCollection" vis="VisibleMental_Muon" material="Iron">
+      <material name="Iron"/>
+      <position x="0" y="env_posy_endcap" z="0"/>
+      <dimensions rmin="env_rmin" dz="0.5*env_z"/>
+      <module id="0" name="Stripe" type="Stripe" vis="VisibleBlank_Muon" material="Air">
+        <material name="Air"/>
+        <dimensions dx="0.5*strip_x"  dy="0.5*strip_y"  dz="0.5*strip_z+SiPM_z"/>
+        <module id="0" type="surface" name="surface" vis="VisibleGreen_Muon" material="BC420">
+          <position x="0" y="0" z="0"/>
+          <dimensions dx="0.5*surface_x" dy="0.5*surface_y" dz="0.5*surface_z"/>
+          <section name="cut1" vis="VisibleBlank_Muon" material="Air">
+            <position x="cut1_posx" y="cut1_posy" z="cut1_posz"/>
+            <dimensions dx="0.5*cut1_x" dy="0.5*cut1_y" dz="0.5*cut1_z"/>
+          </section>
+        </module>
+        <module id="1" type="BC420" name="BC420" vis="VisibleGreen_Muon" material="BC420">
+          <position x="0" y="0" z="0"/>
+          <dimensions dx="0.5*BC420_x" dy="0.5*BC420_y" dz="0.5*BC420_z"/>
+          <section name="cut3" vis="VisibleBlank_Muon" material="Air">
+            <position x="cut3_posx" y="cut3_posy" z="cut3_posz"/>
+            <dimensions rmin="0" rmax="cut3_rmax" dz="0.5*cut3_z"/>
+            <section name="cut2" vis="VisibleBlank_Muon" material="Air">
+              <position x="cut2_posx" y="cut2_posy" z="cut2_posz"/>
+              <dimensions dx="0.5*cut2_x" dy="0.5*cut2_y" dz="0.5*cut2_z"/>
+            </section>
+          </section>
+        </module>
+        <section id="0" type="cladding" name="cladding" vis="VisibleBlue_Muon" material="Pethylene1">
+          <position x="0" y="0" z="0"/>
+          <dimensions rmin="cladding_rmin" rmax="cladding_rmax" dz="0.5*cladding_z"/>
+        </section>
+        <section id="1" type="core" name="core" vis="VisibleRed_Muon" material="Pethylene2">
+          <position x="0" y="0" z="0"/>
+          <dimensions rmin="0" rmax="core_rmax" dz="0.5*core_z"/>
+        </section>
+        <module id="2" type="SiPM" name="SiPM" vis="VisibleBlue_Muon" material="Air">
+          <position x="SiPM_posx" y="SiPM_posy" z="SiPM_posz"/>
+          <dimensions dx="0.5*SiPM_x" dy="0.5*SiPM_y" dz="0.5*SiPM_z"/>
+        </module>
+      </module>
+    </detector>
+  </detectors>
+
+  <readouts>
+    <readout name="MuonEndcapCollection">
+      <id>Endcap:2,Env:2,Layer:2,Stripe:8:3,SiPM:2</id>
+    </readout>
+  </readouts>
+
+</lccdd>
diff --git a/Detector/DetCRD/compact/CRD_o1_v01/CRD_o1_v01.xml b/Detector/DetCRD/compact/CRD_o1_v01/CRD_o1_v01.xml
index cf923ffbc67b73ed8fcbf3df7a222df598890dda..16ca01fb7e18f3be951a66c1452e784e39052c89 100644
--- a/Detector/DetCRD/compact/CRD_o1_v01/CRD_o1_v01.xml
+++ b/Detector/DetCRD/compact/CRD_o1_v01/CRD_o1_v01.xml
@@ -38,7 +38,9 @@
   <include ref="../CRD_common_v01/Coil_Simple_v01_01.xml"/>
   <include ref="../CRD_common_v01/Hcal_Rpc_Barrel_v01_01.xml"/>
   <include ref="../CRD_common_v01/Hcal_Rpc_Endcaps_v01_01.xml"/>
-  <include ref="../CRD_common_v01/Yoke_Barrel_v01_01.xml"/>
+  <!--include ref="../CRD_common_v01/Muon_Barrel_v01.xml"/-->
+  <!--include ref="../CRD_common_v01/Muon_Endcap_v01.xml"/-->
+  <include ref="../CRD_common_v01/Yoke_Barrel_v01_01.xml"/-->
   <include ref="../CRD_common_v01/Yoke_Endcaps_v01_01.xml"/>
   <!--include ref="../CRD_common_v01/Lcal_v01_01.xml"/-->
   
diff --git a/Detector/DetCRD/compact/README.md b/Detector/DetCRD/compact/README.md
index 8cd6fd645daccb41d79c43b376aa8905e0b6c08b..7d876e625a911aec8dc769bbdb66ad77c6c3cc35 100644
--- a/Detector/DetCRD/compact/README.md
+++ b/Detector/DetCRD/compact/README.md
@@ -1,3 +1,17 @@
+
+# CRD detector models - Overview
+
+The following CRD detector models are available in CEPCSW
+
+| Model         |  Description                 | MainTracker |  Ecal   | Hcal | Muon  | Status         |
+| ------------- | -----------------------------|------------ |---------|------|-------|----------------|
+| CRD_o1_v01    | coil inside simulation model | SIT+DC+SET  | crystal | RPC  | Scint | developing     |
+| CRD_o1_v02    | strip SET                    | SIT+DC+SET  | crystal | RPC  | Scint | developing     |
+| CRD_o1_v03    | MOST2 vertex                 | SIT+DC+SET  | crystal | RPC  | Scint | developing     |
+| CRD_o1_v04    | smaller center beam pipe     | SIT+DC+SET  | crystal | RPC  | Scint | developing     |
+| CRD_o1_v05    | Use Ref-Det ECAL and HCAL    | SIT+TPC+SET | crystal | Glass| Scint | developing     |
+| ------------- | -----------------------------|-------------|---------|------|-------|----------------|
+
 # CRD detector models - Overview
 
 The following CRD detector models are available in CEPCSW
diff --git a/Detector/DetCRD/compact/TDR_o1_v01/TDR_o1_v01-onlyMuon.xml b/Detector/DetCRD/compact/TDR_o1_v01/TDR_o1_v01-onlyMuon.xml
new file mode 100644
index 0000000000000000000000000000000000000000..45f6c350052ffd0a19e9d784563701ba0a6cdead
--- /dev/null
+++ b/Detector/DetCRD/compact/TDR_o1_v01/TDR_o1_v01-onlyMuon.xml
@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<lccdd xmlns:compact="http://www.lcsim.org/schemas/compact/1.0"
+       xmlns:xs="http://www.w3.org/2001/XMLSchema"
+       xs:noNamespaceSchemaLocation="http://www.lcsim.org/schemas/compact/1.0/compact.xsd">
+  <info name="TDR_o1_v01"
+        title="CepC reference detctor with coil inside Hcal, pixel SIT/SET"
+        author="C.D.Fu, "
+        url="http://cepc.ihep.ac.cn"
+        status="developing"
+        version="v01">
+    <comment>CepC reference detector simulation models used for detector study </comment>
+  </info>
+
+  <includes>
+    <gdmlFile  ref="${DD4hepINSTALL}/DDDetectors/compact/elements.xml"/>
+    <gdmlFile  ref="../materials_muon.xml"/>
+  </includes>
+
+  
+  <define>
+    <constant name="world_size" value="25*m"/>
+    <constant name="world_x" value="world_size"/>
+    <constant name="world_y" value="world_size"/>
+    <constant name="world_z" value="world_size"/>
+
+    <constant name="strip_x" value="4*cm"/>
+    <constant name="strip_y" value="1*cm"/>
+    <constant name="strip_z" value="4*m"/>
+    <constant name="surf" value="1*mm"/>
+
+    <constant name="Fe_gap" value="2.5*cm"/>
+    <constant name="Fe_x1" value="105*cm"/>
+
+    <constant name="surface_x" value="strip_x"/>
+    <constant name="surface_y" value="strip_y"/>
+    <constant name="surface_z" value="strip_z"/>
+
+    <constant name="BC420_x" value="strip_x-2*surf"/>
+    <constant name="BC420_y" value="strip_y-2*surf"/>
+    <constant name="BC420_z" value="strip_z"/>
+
+    <constant name="SiPM_x" value="6*mm"/>
+    <constant name="SiPM_y" value="6*mm"/>
+    <constant name="SiPM_z" value="surf"/>
+    <constant name="SiPM_posx" value="0"/>
+    <constant name="SiPM_posy" value="0"/>
+    <constant name="SiPM_posz" value="0.5*strip_z+0.5*SiPM_z"/>
+
+    <constant name="core_rmax" value="0.95*mm"/>
+    <constant name="core_z" value="strip_z"/>
+
+    <constant name="cladding_rmin" value="core_rmax"/>
+    <constant name="cladding_rmax" value="1*mm"/>
+    <constant name="cladding_z" value="strip_z"/>
+
+    <constant name="deviation" value="0.1*mm"/>
+    <constant name="cut3_rmax" value="cladding_rmax+deviation"/>
+    <constant name="cut3_z" value="strip_z"/>
+    <constant name="cut3_posx" value="0"/>
+    <constant name="cut3_posy" value="cut3_rmax-cladding_rmax"/>
+    <constant name="cut3_posz" value="0"/>
+
+    <constant name="cut1_x" value="2*cut3_rmax"/>
+    <constant name="cut1_y" value="surf"/>
+    <constant name="cut1_z" value="strip_z"/>
+    <constant name="cut1_posx" value="0"/>
+    <constant name="cut1_posy" value="0.5*strip_y-0.5*cut1_y"/>
+    <constant name="cut1_posz" value="0"/>
+
+    <constant name="cut2_x" value="cut1_x"/>
+    <constant name="cut2_y" value="0.5*BC420_y-cut3_rmax+cladding_rmax"/>
+    <constant name="cut2_z" value="strip_z"/>
+    <constant name="cut2_posx" value="0"/>
+    <constant name="cut2_posy" value="0.5*BC420_y-0.5*cut2_y"/>
+    <constant name="cut2_posz" value="0"/>
+
+    <include ref="${DD4hepINSTALL}/DDDetectors/compact/detector_types.xml"/>
+  </define>
+
+  <display>
+    <vis name="Invisible_Muon" showDaughters="false" visible="false"/>
+    <vis name="InvisibleWithChildren_Muon" showDaughters="true" visible="false"/>
+    <vis name="VisibleRed_Muon"  r="1.0" g="0.0" b="0.0" showDaughters="true" visible="true"/>
+    <vis name="VisibleBlue_Muon" alpha="0.5" r="0.0" g="0.0" b="1.0" showDaughters="false" visible="true"/>
+    <vis name="VisibleGreen_Muon" alpha="0.3" r="0.0" g="1.0" b="0.0" drawingStyle="solid" lineStyle="solid" showDaughters="true" visible="true"/>
+    <vis name="VisibleMental_Muon" alpha="0.1" r="0.5" g="0.5" b="0.5" showDaughters="true" visible="true"/>
+    <vis name="VisibleBlank_Muon" alpha="0.0" r="0.0" g="0.0" b="0.0" showDaughters="true" visible="true"/>
+  </display>
+
+  <include ref="./TDR_Dimensions_v01_01.xml"/>
+
+  <!--include ref="../CRD_common_v01/Beampipe_v01_01.xml"/-->
+  <!--include ref="../CRD_common_v01/VXD_v01_01.xml"/-->
+  <!--include ref="../CRD_common_v01/FTD_SkewRing_v01_01.xml"/-->
+  <!--include ref="../CRD_common_v01/SIT_SimplePixel_v01_01.xml"/-->
+  <!--include ref="../CRD_common_v01/DC_Simple_v01_05.xml"/-->
+  <!--include ref="../CRD_common_v01/SET_SimplePixel_v01_01.xml"/-->
+  <!--include ref="../CRD_common_v01/Ecal_Crystal_Barrel_v01_01.xml"/-->
+  <!--include ref="../CRD_common_v01/Ecal_Crystal_Endcap_v01_01.xml"/-->
+  <include ref="../CRD_common_v01/Muon_Endcap_v01.xml"/>
+  <include ref="../CRD_common_v01/Muon_Barrel_v01.xml"/>
+ 
+  <fields>
+    <field name="InnerSolenoid" type="solenoid"
+           inner_field="Field_nominal_value"
+           outer_field="0"
+           zmax="SolenoidCoil_half_length"
+           inner_radius="SolenoidCoil_center_radius"
+           outer_radius="Solenoid_outer_radius">
+    </field>
+    <field name="OuterSolenoid" type="solenoid"
+           inner_field="0"
+           outer_field="Field_outer_nominal_value"
+           zmax="SolenoidCoil_half_length"
+           inner_radius="Solenoid_outer_radius"
+           outer_radius="Yoke_barrel_inner_radius">
+    </field>
+  </fields>
+
+</lccdd>
diff --git a/Detector/DetCRD/compact/TDR_o1_v01/TDR_o1_v01.xml b/Detector/DetCRD/compact/TDR_o1_v01/TDR_o1_v01.xml
index b78b74341aee898779fd8ff66f462cc854976486..71f251c685105bd29f7cc5f21ba20132427a4396 100644
--- a/Detector/DetCRD/compact/TDR_o1_v01/TDR_o1_v01.xml
+++ b/Detector/DetCRD/compact/TDR_o1_v01/TDR_o1_v01.xml
@@ -46,7 +46,11 @@
   <!--preliminary Muon, to update/-->
   <include ref="../CRD_common_v02/Yoke_Polyhedra_Barrel_v01_01.xml"/>
   <include ref="../CRD_common_v02/Yoke_Polyhedra_Endcaps_v01_01.xml"/>
-  
+ 
+  <!--muon detector/-->
+  <!--include ref="../CRD_common_v01/Muon_Barrel_v01.xml"/-->
+  <!--include ref="../CRD_common_v01/Muon_Endcap_v01.xml"/-->
+ 
   <fields>
     <field name="InnerSolenoid" type="solenoid"
            inner_field="Field_nominal_value"
diff --git a/Detector/DetCRD/compact/materials_muon.xml b/Detector/DetCRD/compact/materials_muon.xml
new file mode 100644
index 0000000000000000000000000000000000000000..34c657294e08b9b3328a58eafdbc3819c7b948a2
--- /dev/null
+++ b/Detector/DetCRD/compact/materials_muon.xml
@@ -0,0 +1,127 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<lccdd>
+  <properties>
+
+    <matrix name="RINDEX__Air" coldim="2" values="
+    1.0*eV 1.00029
+    5.1*eV 1.00029
+    "/>
+    <matrix name="RINDEX__BC420" coldim="2" values="
+    2.38*eV 1.58
+    2.88*eV 1.58
+    3.45*eV 1.58
+    "/>
+    <matrix name="ABSLENGTH__BC420" coldim="2" values="
+    2.38*eV 10*cm
+    2.88*eV 10*cm
+    3.45*eV 10*cm
+    "/>
+    <matrix name="WLSCOMPONENT__BC420" coldim="2" values="
+    2.38*eV 0.
+    2.88*eV 1.
+    3.45*eV 0.
+    "/>
+    <matrix name="SCINTILLATIONCOMPONENT__BC420" coldim="2" values="
+    2.38*eV 1.0
+    2.88*eV 1.0
+    3.45*eV 1.0
+    "/>
+    <matrix name="RINDEX__Pethylene1" coldim="2" values="
+    2.0*eV 1.49
+    2.87*eV 1.49
+    2.90*eV 1.49
+    3.47*eV 1.49
+    "/>
+    <matrix name="ABSLENGTH__Pethylene1" coldim="2" values="
+    2.0*eV 3.0*m
+    2.87*eV 3.0*m
+    2.90*eV 3.0*m
+    3.47*eV 3.0*m
+    "/>
+    <matrix name="RINDEX__Pethylene2" coldim="2" values="
+    2.0*eV 1.60
+    2.87*eV 1.60
+    2.90*eV 1.60
+    3.47*eV 1.60
+    "/>
+    <matrix name="WLSABSLENGTH__Pethylene2" coldim="2" values="
+    2.0*eV 3.0*m
+    2.87*eV 3.0*m
+    2.90*eV 0.1*mm
+    3.47*eV 0.1*mm
+    "/>
+    <matrix name="WLSCOMPONENT__Pethylene2" coldim="2" values="
+    2.0*eV 1.0
+    2.87*eV 1.0
+    2.90*eV 0.
+    3.47*eV 0.  
+    "/>
+  </properties>
+
+  <materials>
+
+    <material name="Air">
+      <D type="density" unit="g/cm3" value="0.0012"/>
+      <fraction n="0.754" ref="N"/>
+      <fraction n="0.234" ref="O"/>
+      <fraction n="0.012" ref="Ar"/>
+      <property name="RINDEX" ref="RINDEX__Air"/>
+    </material>
+  
+    <material name="Vacuum">  
+      <D type="density" unit="g/cm3" value="0.0000000001" />
+      <fraction n="0.754" ref="N"/>
+      <fraction n="0.234" ref="O"/>
+      <fraction n="0.012" ref="Ar"/>
+    </material>
+
+    <material name="Steel235">
+      <D value="7.85" unit="g/cm3"/>
+      <fraction n="0.998" ref="Fe"/>
+      <fraction n=".002" ref="C"/>
+    </material>
+
+    <material name="BC420">
+      <D type="density" value="1.032" unit="g/cm3"/>
+      <composite n="10" ref="C"/>
+      <composite n="11" ref="H"/>
+      <property name="RINDEX" ref="RINDEX__BC420"/>
+      <property name="ABSLENGTH" ref="ABSLENGTH__BC420"/>
+      <property name="WLSCOMPONENT" ref="WLSCOMPONENT__BC420"/>
+      <property name="SCINTILLATIONCOMPONENT1" ref="SCINTILLATIONCOMPONENT__BC420"/>
+      <property name="SCINTILLATIONCOMPONENT2" ref="SCINTILLATIONCOMPONENT__BC420"/>
+      <constant name="SCINTILLATIONYIELD" value="10240./MeV"/>
+      <constant name="RESOLUTIONSCALE" value="2.5"/>
+      <constant name="SCINTILLATIONTIMECONSTANT1" value="0.9*ns"/>
+      <constant name="SCINTILLATIONTIMECONSTANT2" value="2.1*ns"/>
+      <constant name="SCINTILLATIONYIELD1" value="1.0"/>
+      <constant name="SCINTILLATIONYIELD2" value="0."/>
+      <constant name="BirksConstant" value="0.126*mm/MeV"/>
+    </material>
+
+    <material name="Pethylene1">
+      <D type="density" value="1200" unit="kg/m3"/>
+      <composite n="2" ref="C"/>
+      <composite n="4" ref="H"/>
+      <property name="RINDEX" ref="RINDEX__Pethylene1"/>
+      <property name="ABSLENGTH" ref="ABSLENGTH__Pethylene1"/>
+    </material>
+
+    <material name="Pethylene2">
+      <D type="density" value="1190" unit="kg/m3"/>
+      <composite n="5" ref="C"/>
+      <composite n="8" ref="H"/>
+      <composite n="2" ref="O"/>
+      <property name="RINDEX" ref="RINDEX__Pethylene2"/>
+      <property name="WLSABSLENGTH" ref="WLSABSLENGTH__Pethylene2"/>
+      <property name="WLSCOMPONENT" ref="WLSCOMPONENT__Pethylene2"/>
+      <constant name="WLSTIMECONSTANT" value="0.5*ns"/>
+    </material>
+
+  </materials>
+
+  <surfaces>
+    <opticalsurface name="Surf__stripe" model="glisur" finish="polished" type="dielectric_metal"/>
+    <opticalsurface name="Surf__fiber" model="glisur" finish="polished" type="dielectric_metal"/>
+  </surfaces>
+</lccdd>
diff --git a/Detector/DetCRD/src/Muon/Muon_Barrel_v01.cpp b/Detector/DetCRD/src/Muon/Muon_Barrel_v01.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..69f985ab340cb6a0f0fa034bfdd09d23e78a1d08
--- /dev/null
+++ b/Detector/DetCRD/src/Muon/Muon_Barrel_v01.cpp
@@ -0,0 +1,332 @@
+//====================================================================
+//  Detector description implementation for Chunxiu Liu's EcalMatrix
+//--------------------------------------------------------------------
+//
+//  Author     : Tao Lin
+//               Examples from lcgeo
+//                   lcgeo/detector/calorimeter/
+//
+//====================================================================
+#include "DD4hep/DetFactoryHelper.h"
+#include "DD4hep/OpticalSurfaces.h"
+#include "XML/Utilities.h"
+#include "DDRec/DetectorData.h"
+#include "DDSegmentation/Segmentation.h"
+#include <cmath>
+
+#define MYDEBUG(x) std::cout << __FILE__ << ":" << __LINE__ << ": " << x << std::endl;
+#define MYDEBUGVAL(x) std::cout << __FILE__ << ":" << __LINE__ << ": " << #x << ": " << x << std::endl;
+
+using dd4hep::rec::LayeredCalorimeterData;
+static dd4hep::Ref_t create_detector(dd4hep::Detector& theDetector,
+                                     xml_h e,
+                                     dd4hep::SensitiveDetector sens) {
+
+    xml_det_t x_det = e;
+
+    std::string det_name = x_det.nameStr();
+    std::string det_type = x_det.typeStr();
+    MYDEBUGVAL(det_name);
+    MYDEBUGVAL(det_type);
+    xml_dim_t   pos    (x_det.child(_U(position)));
+    xml_dim_t   dim    (x_det.child(_U(dimensions)));
+
+    dd4hep::Material det_mat(theDetector.material(x_det.materialStr()));
+
+    dd4hep::DetElement sdet(det_name, x_det.id());
+
+    dd4hep::Volume envelope(det_name,dd4hep::Box(dim.dx(),dim.dy(),dim.dz()),det_mat);
+
+    dd4hep::xml::setDetectorTypeFlag( e, sdet ) ;
+
+    dd4hep::Volume motherVol = theDetector.pickMotherVolume(sdet);
+
+    sens.setType("muonbarrel");
+
+//    dd4hep::Readout readout = sens.readout();
+//    dd4hep::Segmentation seg = readout.segmentation();
+    xml_coll_t dcEnv(x_det,_U(module));
+    xml_comp_t x_env = dcEnv;
+    for(int i0 = 0; i0 < theDetector.constant<int>("env_num"); i0++)
+    {
+      for(int i1 = 0; i1 < x_env.id(); i1++ )
+      {
+        std::string env_name = x_env.nameStr() + dd4hep::_toString(i1,"_%d");
+        dd4hep::Material env_mat(theDetector.material(x_env.materialStr()));
+        xml_dim_t env_pos(x_env.child(_U(position)));
+        xml_dim_t env_dim(x_env.child(_U(dimensions)));
+
+        xml_coll_t dcFe(x_env,_U(module));
+        xml_comp_t x_Fe = dcFe;
+        std::string Fe_name = x_Fe.nameStr() + dd4hep::_toString(i1,"_%d");
+        dd4hep::Material Fe_mat(theDetector.material(x_Fe.materialStr()));
+        xml_dim_t Fe_pos(x_Fe.child(_U(position)));
+        xml_dim_t Fe_dim(x_Fe.child(_U(dimensions)));
+
+        double Fe_halfX2 = theDetector.constant<double>("Fe_x1") * ( 0.5 + std::sqrt(3));
+        double Fe_posZ = -1 * theDetector.constant<double>("Fe_x1") * ( 2.5 + 1.5 * std::sqrt(3) );
+        double env_halfX = 2 * theDetector.constant<double>("Fe_x1") * ( 1 + std::sqrt(3) );
+        double env_halfZ = 2 * theDetector.constant<double>("Fe_x1") * ( 3 + 1.5 * std::sqrt(3) );
+        dd4hep::Box env_solid(env_halfX,env_dim.dy(),env_halfZ);
+        dd4hep::Volume env_vol(env_name, env_solid, env_mat);
+        env_vol.setVisAttributes(theDetector.visAttributes(x_env.visStr()));
+        double env_rot = i1 * 360 * dd4hep::degree / x_env.id();
+        dd4hep::Transform3D env_transform(dd4hep::Rotation3D(dd4hep::RotationY(env_rot)),dd4hep::Position(env_pos.x(), ( 2 * i0 - 1 ) * env_pos.y(),env_pos.z()));
+
+        dd4hep::Trd2 Fe_solid(Fe_dim.x1(),Fe_halfX2,Fe_dim.y1(),Fe_dim.y2(),Fe_dim.dz());
+        dd4hep::Volume Fe_vol(Fe_name, Fe_solid, Fe_mat);
+        Fe_vol.setVisAttributes(theDetector.visAttributes(x_Fe.visStr()));
+        dd4hep::Transform3D Fe_transform(dd4hep::Rotation3D(),dd4hep::Position(Fe_pos.x(),Fe_pos.y(),Fe_posZ));
+
+        xml_coll_t dcSuperlayer(x_Fe,_U(module));
+        xml_comp_t x_superlayer = dcSuperlayer;
+        for(int i2 = 0; i2 < x_superlayer.id(); i2++)
+        {
+          std::string superlayer_name = x_superlayer.nameStr() + dd4hep::_toString(i2,"_%d");
+          std::string num_name = "strip_num" + dd4hep::_toString(i2,"_%d");
+
+          int strip_num = theDetector.constant<int>(num_name);
+          double superlayer_halfX = 0.5 * strip_num * theDetector.constant<double>("strip_x") + theDetector.constant<double>("superlayer_air");
+          double superlayer_halfY = 0.5 * theDetector.constant<double>("superlayer_y");
+          double superlayer_halfZ = 0.5 * theDetector.constant<double>("superlayer_z"); 
+
+          double superlayer_posZ = i2 * theDetector.constant<double>("layer_gap") + theDetector.constant<double>("layer_init");
+
+          dd4hep::Material superlayer_mat(theDetector.material(x_superlayer.materialStr()));
+          dd4hep::Box superlayer_solid(superlayer_halfX, superlayer_halfY, superlayer_halfZ); 
+          dd4hep::Volume superlayer_vol(superlayer_name, superlayer_solid, superlayer_mat);
+          superlayer_vol.setVisAttributes(theDetector.visAttributes(x_superlayer.visStr()));
+          dd4hep::Transform3D superlayer_transform(dd4hep::Rotation3D(dd4hep::RotationX(90*dd4hep::degree)),dd4hep::Position(0, 0, superlayer_posZ));
+
+          xml_coll_t dcAl(x_superlayer,_U(module));
+          xml_comp_t x_Al = dcAl;
+          std::string Al_name = x_Al.nameStr();
+          dd4hep::Material Al_mat(theDetector.material(x_Al.materialStr()));
+          xml_dim_t Al_pos(x_Al.child(_U(position)));
+
+          double Al_halfX = superlayer_halfX - theDetector.constant<double>("superlayer_Al");
+          double Al_halfY = superlayer_halfY - theDetector.constant<double>("superlayer_Al");
+          double Al_halfZ = superlayer_halfZ - theDetector.constant<double>("superlayer_Al");
+          dd4hep::Box Al_solid(Al_halfX, Al_halfY, Al_halfZ);
+          dd4hep::Volume Al_vol(Al_name, Al_solid, Al_mat);
+          Al_vol.setVisAttributes(theDetector.visAttributes(x_Al.visStr()));
+          dd4hep::Transform3D Al_transform(dd4hep::Rotation3D(),dd4hep::Position(Al_pos.x(),Al_pos.y(),Al_pos.z()));
+          for (int i3 = 0; i3 < 2; i3++ )
+          {
+            int num;
+            if ( i3 == 0 )
+            {
+              num = strip_num;
+            }
+            if ( i3 == 1 )
+            {
+              num = theDetector.constant<int>("strip_num");
+            }
+            for ( int i4 = 0; i4 < num; i4++ )
+            {
+              double strip_halfZ, strip_posX, strip_posY, strip_posZ;
+              dd4hep::Rotation3D strip_rot;
+              if ( i3 == 0 )
+              {
+                strip_halfZ = 0.5 * theDetector.constant<double>("strip_z") + theDetector.constant<double>("surf");
+                strip_posX = theDetector.constant<double>("strip_x") * ( i4 + 0.5 * (1 - strip_num));
+                strip_posY = 0.5 * theDetector.constant<double>("strip_y");
+                strip_posZ = 0;
+              }
+              if ( i3 == 1 )
+              {
+                strip_rot = dd4hep::Rotation3D(dd4hep::RotationY( 90 * dd4hep::degree ));
+                strip_halfZ = 0.5 * strip_num * theDetector.constant<double>("strip_x") + theDetector.constant<double>("surf");
+                strip_posX = 0;
+                strip_posY = -0.5 * theDetector.constant<double>("strip_y");
+                strip_posZ = theDetector.constant<double>("strip_x") * ( i4 + 0.5 ) - 0.5 * theDetector.constant<double>("strip_z");
+              }
+              double surface_halfZ, BC420_halfZ, fiber_halfZ, cut_halfZ;
+              double SiPM_posZ = strip_halfZ + theDetector.constant<double>("surf");
+              surface_halfZ = BC420_halfZ = fiber_halfZ = cut_halfZ = strip_halfZ - theDetector.constant<double>("surf"); 
+              xml_coll_t dcStrip(x_Al,_U(module));
+              xml_comp_t x_strip = dcStrip;
+              std::string strip_name = x_strip.nameStr() + dd4hep::_toString(i0,"_%d") + dd4hep::_toString(i1,"_%d") + dd4hep::_toString(i2,"_%d") + dd4hep::_toString(i3,"_%d") + dd4hep::_toString(i4,"_%d");
+              dd4hep::Material strip_mat(theDetector.material(x_strip.materialStr()));
+              xml_dim_t strip_dim(x_strip.child(_U(dimensions)));   
+
+              dd4hep::Box strip_solid(strip_dim.dx(),strip_dim.dy(),strip_halfZ);
+              dd4hep::Volume strip_vol(strip_name,strip_solid,strip_mat);
+              strip_vol.setVisAttributes(theDetector.visAttributes(x_strip.visStr()));
+              dd4hep::Transform3D strip_transform(strip_rot,dd4hep::Position(strip_posX,strip_posY,strip_posZ));
+
+              std::string surface_name, BC420_name, cut1_name, cut2_name, cut3_name, SiPM_name;
+              std::string surface_vis, BC420_vis, cut1_vis, cut2_vis, cut3_vis, SiPM_vis;
+              dd4hep::Material surface_mat, BC420_mat, cut1_mat, cut2_mat, cut3_mat, SiPM_mat; 
+              xml_dim_t surface_pos, cut1_pos, BC420_pos, cut3_pos, cut2_pos, SiPM_pos;
+              xml_dim_t surface_dim, cut1_dim, BC420_dim, cut3_dim, cut2_dim, SiPM_dim;
+              for(xml_coll_t dcModule(x_strip,_U(module)); dcModule; dcModule++)
+              {
+                xml_comp_t x_module = dcModule;
+
+                xml_dim_t module_pos(x_module.child(_U(position)));
+                xml_dim_t module_dim(x_module.child(_U(dimensions)));
+
+                dd4hep::Box module_solid(module_dim.dx(),module_dim.dy(),module_dim.dz());
+                if(x_module.id()==0)
+                {
+                  surface_name = x_module.nameStr();
+                  surface_vis = x_module.visStr();
+                  surface_mat = theDetector.material(x_module.materialStr());
+                  xml_dim_t s_pos(x_module.child(_U(position)));
+                  xml_dim_t s_dim(x_module.child(_U(dimensions)));
+                  surface_pos = s_pos;
+                  surface_dim = s_dim;
+
+                  xml_coll_t dcCut1(x_module,_U(section));
+                  xml_comp_t x_cut1 = dcCut1;
+                  cut1_name = x_cut1.nameStr();
+                  cut1_vis = x_cut1.visStr();
+                  cut1_mat = theDetector.material(x_cut1.materialStr());
+                  xml_dim_t c1_pos(x_cut1.child(_U(position)));
+                  xml_dim_t c1_dim(x_cut1.child(_U(dimensions)));
+                  cut1_pos = c1_pos;
+                  cut1_dim = c1_dim;
+                }
+                if(x_module.id()==1)
+                {
+                  BC420_name = x_module.nameStr();
+                  BC420_vis = x_module.visStr();
+                  BC420_mat = theDetector.material(x_module.materialStr());
+                  xml_dim_t b_pos(x_module.child(_U(position)));
+                  xml_dim_t b_dim(x_module.child(_U(dimensions)));
+                  BC420_pos = b_pos;
+                  BC420_dim = b_dim;
+
+                  xml_coll_t dcCut3(x_module,_U(section));
+                  xml_comp_t x_cut3 = dcCut3;
+                  cut3_name = x_cut3.nameStr();
+                  cut3_vis = x_cut3.visStr();
+                  cut3_mat = theDetector.material(x_cut3.materialStr());
+                  xml_dim_t c3_pos(x_cut3.child(_U(position)));
+                  xml_dim_t c3_dim(x_cut3.child(_U(dimensions)));
+                  cut3_pos = c3_pos;
+                  cut3_dim = c3_dim;
+
+                  xml_coll_t dcCut2(x_cut3,_U(section));
+                  xml_comp_t x_cut2 = dcCut2;
+                  cut2_name = x_cut2.nameStr();
+                  cut2_vis = x_cut2.visStr();
+                  cut2_mat = theDetector.material(x_cut2.materialStr());
+                  xml_dim_t c2_pos(x_cut2.child(_U(position)));
+                  xml_dim_t c2_dim(x_cut2.child(_U(dimensions)));
+                  cut2_pos = c2_pos;
+                  cut2_dim = c2_dim; 
+                }
+                if(x_module.id()==2)
+                {
+                  SiPM_name = x_module.nameStr();
+                  SiPM_vis = x_module.visStr();
+                  SiPM_mat = theDetector.material(x_module.materialStr());
+                  xml_dim_t S_pos(x_module.child(_U(position)));
+                  xml_dim_t S_dim(x_module.child(_U(dimensions)));
+                  SiPM_pos = S_pos;
+                  SiPM_dim = S_dim;
+                }
+              }
+              dd4hep::Box surface_solid(surface_dim.dx(),surface_dim.dy(),surface_halfZ);
+              dd4hep::Box cut1_solid(cut1_dim.dx(),cut1_dim.dy(),cut_halfZ);
+              dd4hep::Box BC420_solid(BC420_dim.dx(),BC420_dim.dy(),BC420_halfZ);
+              dd4hep::Tube cut3_solid(cut3_dim.rmin(),cut3_dim.rmax(),cut_halfZ);
+              dd4hep::Box cut2_solid(cut2_dim.dx(),cut2_dim.dy(),cut_halfZ);
+              dd4hep::Box SiPM_solid(SiPM_dim.dx(),SiPM_dim.dy(),SiPM_dim.dz());
+
+              dd4hep::Transform3D surface_transform(dd4hep::Rotation3D(),dd4hep::Position(surface_pos.x(),surface_pos.y(),surface_pos.z()));
+              dd4hep::Transform3D cut1_transform(dd4hep::Rotation3D(),dd4hep::Position(cut1_pos.x(),cut1_pos.y(),cut1_pos.z()));
+              dd4hep::Transform3D BC420_transform(dd4hep::Rotation3D(),dd4hep::Position(BC420_pos.x(),BC420_pos.y(),BC420_pos.z()));
+              dd4hep::Transform3D cut2_transform(dd4hep::Rotation3D(),dd4hep::Position(cut2_pos.x(),cut2_pos.y(),cut2_pos.z()));
+              dd4hep::Transform3D cut3_transform(dd4hep::Rotation3D(),dd4hep::Position(cut3_pos.x(),cut3_pos.y(),cut3_pos.z()));
+              dd4hep::Transform3D SiPM_transform0(dd4hep::Rotation3D(),dd4hep::Position(SiPM_pos.x(),SiPM_pos.y(),SiPM_posZ));
+              dd4hep::Transform3D SiPM_transform1(dd4hep::Rotation3D(),dd4hep::Position(SiPM_pos.x(),SiPM_pos.y(), -1 * SiPM_posZ));
+
+              dd4hep::Volume surface_vol(surface_name, surface_solid, surface_mat);
+              surface_vol.setVisAttributes(theDetector.visAttributes(surface_vis));
+              surface_vol.setSensitiveDetector(sens);
+
+              dd4hep::Volume cut1_vol(cut1_name, cut1_solid, cut1_mat);
+              cut1_vol.setVisAttributes(theDetector.visAttributes(cut1_vis));
+
+              dd4hep::Volume cut2_vol(cut2_name, cut2_solid, cut2_mat);
+              cut2_vol.setVisAttributes(theDetector.visAttributes(cut2_vis));
+
+              dd4hep::Volume cut3_vol(cut3_name, cut3_solid, cut3_mat);
+              cut3_vol.setVisAttributes(theDetector.visAttributes(cut3_vis));
+
+              dd4hep::Volume BC420_vol(BC420_name,BC420_solid,BC420_mat);
+              BC420_vol.setVisAttributes(theDetector.visAttributes(BC420_vis));
+
+              dd4hep::Volume SiPM_vol(SiPM_name, SiPM_solid, SiPM_mat);
+              SiPM_vol.setVisAttributes(theDetector.visAttributes(SiPM_vis));
+              SiPM_vol.setSensitiveDetector(sens);
+
+              BC420_vol.placeVolume(cut2_vol,cut2_transform);
+              BC420_vol.placeVolume(cut3_vol,cut3_transform);
+              dd4hep::PlacedVolume cladding_place, core_place;
+              for(xml_coll_t dcSection(x_strip,_U(section)); dcSection; dcSection++)
+              {
+                xml_comp_t x_section = dcSection;
+                std::string section_name = x_section.nameStr();
+                dd4hep::Material section_mat = theDetector.material(x_section.materialStr());
+
+                xml_dim_t section_pos(x_section.child(_U(position)));
+                xml_dim_t section_dim(x_section.child(_U(dimensions)));
+
+                dd4hep::Tube section_solid(section_dim.rmin(),section_dim.rmax(),fiber_halfZ);
+                dd4hep::Volume section_vol(section_name,section_solid,section_mat);
+                section_vol.setVisAttributes(theDetector.visAttributes(x_section.visStr()));
+
+                dd4hep::Transform3D section_transform(dd4hep::Rotation3D(),dd4hep::Position(section_pos.x(),section_pos.y(),section_pos.z()));
+                if (x_section.id() == 0)
+                {
+                  cladding_place = BC420_vol.placeVolume(section_vol,section_transform);
+                }
+                if (x_section.id() == 1)
+                {
+                  core_place = BC420_vol.placeVolume(section_vol,section_transform);
+                }
+              }
+              surface_vol.placeVolume(cut1_vol,cut1_transform);
+              dd4hep::PlacedVolume BC420_place = surface_vol.placeVolume(BC420_vol,BC420_transform);
+              BC420_place.addPhysVolID("Stripe",i4+1);
+              dd4hep::PlacedVolume surf_place = strip_vol.placeVolume(surface_vol,surface_transform);
+              surf_place.addPhysVolID("Layer",i3+1);
+              surf_place.addPhysVolID("SiPM",0);
+              dd4hep::PlacedVolume SiPM_place0 = strip_vol.placeVolume(SiPM_vol,SiPM_transform0);
+              SiPM_place0.addPhysVolID("SiPM",1);
+
+              dd4hep::PlacedVolume SiPM_place1 = strip_vol.placeVolume(SiPM_vol,SiPM_transform1);
+              SiPM_place1.addPhysVolID("SiPM",2);
+              Al_vol.placeVolume(strip_vol,strip_transform);
+              dd4hep::OpticalSurfaceManager surfMgr = theDetector.surfaceManager();
+              std::string optical_surf = strip_name + "_surf";
+              std::string optical_fiber = strip_name + "_fiber";
+              dd4hep::OpticalSurface Surf_stripe = surfMgr.opticalSurface("Surf__stripe");
+              dd4hep::OpticalSurface Surf_fiber = surfMgr.opticalSurface("Surf__fiber");
+              dd4hep::BorderSurface surface_stripe( theDetector, sdet, optical_surf, Surf_stripe, BC420_place, surf_place);
+              dd4hep::BorderSurface surface_fiber( theDetector, sdet, optical_fiber, Surf_fiber, core_place, cladding_place);
+            }
+          }
+          dd4hep::PlacedVolume Al_place = superlayer_vol.placeVolume(Al_vol,Al_transform);
+          Al_place.addPhysVolID("Superlayer",i2+1);
+          Fe_vol.placeVolume(superlayer_vol,superlayer_transform);
+        }
+        dd4hep::PlacedVolume Fe_place = env_vol.placeVolume(Fe_vol,Fe_transform);
+        Fe_place.addPhysVolID("Fe",i1+1);
+        dd4hep::PlacedVolume env_place = envelope.placeVolume(env_vol,env_transform);
+        env_place.addPhysVolID("Env",i0+1);
+      }
+    }
+    dd4hep::Transform3D pv(dd4hep::Rotation3D(),dd4hep::Position(0,0,0));
+    dd4hep::PlacedVolume phv = motherVol.placeVolume(envelope,pv);
+    sdet.setPlacement(phv);
+
+    MYDEBUG("create_detector DONE. ");
+    return sdet;
+}
+
+DECLARE_DETELEMENT(Muon_Barrel_v01, create_detector)
diff --git a/Detector/DetCRD/src/Muon/Muon_Endcap_v01.cpp b/Detector/DetCRD/src/Muon/Muon_Endcap_v01.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..797dca0b5b93c8301068419ecec33486ff4ad898
--- /dev/null
+++ b/Detector/DetCRD/src/Muon/Muon_Endcap_v01.cpp
@@ -0,0 +1,294 @@
+//====================================================================
+//  Detector description implementation for Chunxiu Liu's EcalMatrix
+//--------------------------------------------------------------------
+//
+//  Author     : Tao Lin
+//               Examples from lcgeo
+//                   lcgeo/detector/calorimeter/
+//
+//====================================================================
+#include "DD4hep/DetFactoryHelper.h"
+#include "DD4hep/OpticalSurfaces.h"
+#include "XML/Utilities.h"
+#include "DDRec/DetectorData.h"
+#include "DDSegmentation/Segmentation.h"
+#include <cmath>
+
+#define MYDEBUG(x) std::cout << __FILE__ << ":" << __LINE__ << ": " << x << std::endl;
+#define MYDEBUGVAL(x) std::cout << __FILE__ << ":" << __LINE__ << ": " << #x << ": " << x << std::endl;
+
+using dd4hep::rec::LayeredCalorimeterData;
+static dd4hep::Ref_t create_detector(dd4hep::Detector& theDetector,
+                                     xml_h e,
+                                     dd4hep::SensitiveDetector sens) {
+
+    xml_det_t x_det = e;
+
+    std::string det_name = x_det.nameStr();
+    std::string det_type = x_det.typeStr();
+    MYDEBUGVAL(det_name);
+    MYDEBUGVAL(det_type);
+    xml_dim_t   pos    (x_det.child(_U(position)));
+    xml_dim_t   dim    (x_det.child(_U(dimensions)));
+
+    double env_rmax = theDetector.constant<double>("Fe_x1") * std::sqrt( ( 1.5 * 1.5 + ( 3 + 1.5 * std::sqrt(3) ) * ( 3 + 1.5 * std::sqrt(3) ) ) );
+
+    dd4hep::Material det_mat(theDetector.material(x_det.materialStr()));
+
+    dd4hep::Assembly assembly(det_name);
+
+    dd4hep::DetElement sdet("envelope", 1);
+
+    dd4hep::Volume envelope( "envelope", dd4hep::Tube( dim.rmin(), theDetector.constant<double>( "multiple" ) * env_rmax, dim.dz() ), det_mat);
+    envelope.setVisAttributes(theDetector.visAttributes(x_det.visStr()));
+
+    sens.setType("muonendcap");
+
+//    dd4hep::Readout readout = sens.readout();
+//    dd4hep::Segmentation seg = readout.segmentation();
+    for (int i0 = 0; i0 < theDetector.constant<int>("env_num_endcap"); i0++)
+    {
+      std::string env_name = "part" + dd4hep::_toString(i0,"_%d");
+      dd4hep::Tube env_solid( dim.rmin(), theDetector.constant<double>( "multiple" ) * env_rmax, dim.dz(), 0, 90 * dd4hep::degree);
+      dd4hep::Volume env_vol( env_name, env_solid, det_mat);
+      env_vol.setVisAttributes(theDetector.visAttributes(x_det.visStr()));
+      dd4hep::Transform3D env_transform(dd4hep::Rotation3D(dd4hep::RotationZ(i0 * 90 * dd4hep::degree)),dd4hep::Position());
+      for (int i1 = 0; i1 < theDetector.constant<int>("layer_num"); i1++ )
+      {
+        for ( int i2 = 0; i2 < theDetector.constant<int>("strip_num_endcap"); i2++)
+        {
+          double strip_posX, strip_posY, strip_posZ;
+          double strip_sizeZ, surface_halfZ, BC420_halfZ, fiber_halfZ, cut_halfZ;
+          dd4hep::Rotation3D strip_rot;
+          if ( i1 == 1 )
+          {
+            strip_rot = dd4hep::Rotation3D( dd4hep::RotationX( 90 * dd4hep::degree ) );
+            strip_posX = theDetector.constant<double>("strip_x") * ( i2 + 0.5 );
+            strip_posZ = 0.5 * ( 1 - 2 * ( i0 % 2 ) ) * theDetector.constant<double>("strip_y");
+            if ( i2 < theDetector.constant<int>("strip_num_cut") )
+            {
+              strip_sizeZ = std::sqrt( env_rmax * env_rmax - i2 * theDetector.constant<double>("strip_x") * i2 * theDetector.constant<double>("strip_x") ) - std::sqrt( dim.rmin() * dim.rmin() - i2 * theDetector.constant<double>("strip_x") * i2 * theDetector.constant<double>("strip_x") );
+              strip_posY = std::sqrt( env_rmax * env_rmax - i2 * theDetector.constant<double>("strip_x") * i2 * theDetector.constant<double>("strip_x") ) - 0.5 * strip_sizeZ; 
+            }
+            if ( i2 >= theDetector.constant<int>("strip_num_cut") )
+            {
+              strip_sizeZ = std::sqrt( env_rmax * env_rmax - i2 * theDetector.constant<double>("strip_x") * i2 * theDetector.constant<double>("strip_x") );
+              strip_posY = 0.5 * strip_sizeZ;
+            }
+          }
+          if ( i1 == 0 )
+          {
+            strip_rot = dd4hep::Rotation3D( dd4hep::RotationX( 90 * dd4hep::degree ) * dd4hep::RotationY( 90 * dd4hep::degree ) );
+            strip_posY = theDetector.constant<double>("strip_x") * ( i2 + 0.5 );
+            strip_posZ = 0.5 * ( 2 * ( i0 % 2 ) - 1 ) * theDetector.constant<double>("strip_y");
+            if ( i2 < theDetector.constant<int>("strip_num_cut") )
+            {
+              strip_sizeZ = std::sqrt( env_rmax * env_rmax - i2 * theDetector.constant<double>("strip_x") * i2 * theDetector.constant<double>("strip_x") ) - std::sqrt( dim.rmin() * dim.rmin() - i2 * theDetector.constant<double>("strip_x") * i2 * theDetector.constant<double>("strip_x") );
+              strip_posX = std::sqrt( env_rmax * env_rmax - i2 * theDetector.constant<double>("strip_x") * i2 * theDetector.constant<double>("strip_x") ) - 0.5 * strip_sizeZ;
+            }
+            if ( i2 >= theDetector.constant<int>("strip_num_cut") )
+            {
+              strip_sizeZ = std::sqrt( env_rmax * env_rmax - i2 * theDetector.constant<double>("strip_x") * i2 * theDetector.constant<double>("strip_x") );
+              strip_posX = 0.5 * strip_sizeZ;
+            }
+          }
+          double strip_halfZ = 0.5 * strip_sizeZ;
+          double SiPM_posZ = strip_halfZ + theDetector.constant<double>("surf");
+          surface_halfZ = BC420_halfZ = fiber_halfZ = cut_halfZ = strip_halfZ - theDetector.constant<double>("surf"); 
+          xml_coll_t dcStrip(x_det,_U(module));
+          xml_comp_t x_strip = dcStrip;
+          std::string strip_name = x_strip.nameStr() + dd4hep::_toString(i0,"_%d") + dd4hep::_toString(i1,"_%d") + dd4hep::_toString(i2,"_%d");
+          dd4hep::Material strip_mat(theDetector.material(x_strip.materialStr()));
+          xml_dim_t strip_dim(x_strip.child(_U(dimensions)));   
+
+          dd4hep::Box strip_solid(strip_dim.dx(),strip_dim.dy(),strip_halfZ);
+          dd4hep::Volume strip_vol(strip_name,strip_solid,strip_mat);
+          strip_vol.setVisAttributes(theDetector.visAttributes(x_strip.visStr()));
+          dd4hep::Transform3D strip_transform(strip_rot,dd4hep::Position(strip_posX,strip_posY,strip_posZ));
+
+          std::string surface_name, BC420_name, cut1_name, cut2_name, cut3_name, SiPM_name;
+          std::string surface_vis, BC420_vis, cut1_vis, cut2_vis, cut3_vis, SiPM_vis;
+          dd4hep::Material surface_mat, BC420_mat, cut1_mat, cut2_mat, cut3_mat, SiPM_mat; 
+          xml_dim_t surface_pos, cut1_pos, BC420_pos, cut3_pos, cut2_pos, SiPM_pos;
+          xml_dim_t surface_dim, cut1_dim, BC420_dim, cut3_dim, cut2_dim, SiPM_dim;
+          for(xml_coll_t dcModule(x_strip,_U(module)); dcModule; dcModule++)
+          {
+            xml_comp_t x_module = dcModule;
+
+            xml_dim_t module_pos(x_module.child(_U(position)));
+            xml_dim_t module_dim(x_module.child(_U(dimensions)));
+
+            dd4hep::Box module_solid(module_dim.dx(),module_dim.dy(),module_dim.dz());
+            if(x_module.id()==0)
+            {
+              surface_name = x_module.nameStr();
+              surface_vis = x_module.visStr();
+              surface_mat = theDetector.material(x_module.materialStr());
+              xml_dim_t s_pos(x_module.child(_U(position)));
+              xml_dim_t s_dim(x_module.child(_U(dimensions)));
+              surface_pos = s_pos;
+              surface_dim = s_dim;
+
+              xml_coll_t dcCut1(x_module,_U(section));
+              xml_comp_t x_cut1 = dcCut1;
+              cut1_name = x_cut1.nameStr();
+              cut1_vis = x_cut1.visStr();
+              cut1_mat = theDetector.material(x_cut1.materialStr());
+              xml_dim_t c1_pos(x_cut1.child(_U(position)));
+              xml_dim_t c1_dim(x_cut1.child(_U(dimensions)));
+              cut1_pos = c1_pos;
+              cut1_dim = c1_dim;
+            }
+            if(x_module.id()==1)
+            {
+              BC420_name = x_module.nameStr();
+              BC420_vis = x_module.visStr();
+              BC420_mat = theDetector.material(x_module.materialStr());
+              xml_dim_t b_pos(x_module.child(_U(position)));
+              xml_dim_t b_dim(x_module.child(_U(dimensions)));
+              BC420_pos = b_pos;
+              BC420_dim = b_dim;
+
+              xml_coll_t dcCut3(x_module,_U(section));
+              xml_comp_t x_cut3 = dcCut3;
+              cut3_name = x_cut3.nameStr();
+              cut3_vis = x_cut3.visStr();
+              cut3_mat = theDetector.material(x_cut3.materialStr());
+              xml_dim_t c3_pos(x_cut3.child(_U(position)));
+              xml_dim_t c3_dim(x_cut3.child(_U(dimensions)));
+              cut3_pos = c3_pos;
+              cut3_dim = c3_dim;
+
+              xml_coll_t dcCut2(x_cut3,_U(section));
+              xml_comp_t x_cut2 = dcCut2;
+              cut2_name = x_cut2.nameStr();
+              cut2_vis = x_cut2.visStr();
+              cut2_mat = theDetector.material(x_cut2.materialStr());
+              xml_dim_t c2_pos(x_cut2.child(_U(position)));
+              xml_dim_t c2_dim(x_cut2.child(_U(dimensions)));
+              cut2_pos = c2_pos;
+              cut2_dim = c2_dim; 
+            }
+            if(x_module.id()==2)
+            {
+              SiPM_name = x_module.nameStr();
+              SiPM_vis = x_module.visStr();
+              SiPM_mat = theDetector.material(x_module.materialStr());
+              xml_dim_t S_pos(x_module.child(_U(position)));
+              xml_dim_t S_dim(x_module.child(_U(dimensions)));
+              SiPM_pos = S_pos;
+              SiPM_dim = S_dim;
+            }
+          }
+          dd4hep::Box surface_solid(surface_dim.dx(),surface_dim.dy(),surface_halfZ);
+          dd4hep::Box cut1_solid(cut1_dim.dx(),cut1_dim.dy(),cut_halfZ);
+          dd4hep::Box BC420_solid(BC420_dim.dx(),BC420_dim.dy(),BC420_halfZ);
+          dd4hep::Tube cut3_solid(cut3_dim.rmin(),cut3_dim.rmax(),cut_halfZ);
+          dd4hep::Box cut2_solid(cut2_dim.dx(),cut2_dim.dy(),cut_halfZ);
+          dd4hep::Box SiPM_solid(SiPM_dim.dx(),SiPM_dim.dy(),SiPM_dim.dz());
+
+          dd4hep::Transform3D surface_transform(dd4hep::Rotation3D(),dd4hep::Position(surface_pos.x(),surface_pos.y(),surface_pos.z()));
+          dd4hep::Transform3D cut1_transform(dd4hep::Rotation3D(),dd4hep::Position(cut1_pos.x(),cut1_pos.y(),cut1_pos.z()));
+          dd4hep::Transform3D BC420_transform(dd4hep::Rotation3D(),dd4hep::Position(BC420_pos.x(),BC420_pos.y(),BC420_pos.z()));
+          dd4hep::Transform3D cut2_transform(dd4hep::Rotation3D(),dd4hep::Position(cut2_pos.x(),cut2_pos.y(),cut2_pos.z()));
+          dd4hep::Transform3D cut3_transform(dd4hep::Rotation3D(),dd4hep::Position(cut3_pos.x(),cut3_pos.y(),cut3_pos.z()));
+          dd4hep::Transform3D SiPM_transform1(dd4hep::Rotation3D(),dd4hep::Position(SiPM_pos.x(),SiPM_pos.y(),SiPM_posZ));
+          dd4hep::Transform3D SiPM_transform2(dd4hep::Rotation3D(),dd4hep::Position(SiPM_pos.x(),SiPM_pos.y(), -1 * SiPM_posZ));
+
+          dd4hep::Volume surface_vol(surface_name, surface_solid, surface_mat);
+          surface_vol.setVisAttributes(theDetector.visAttributes(surface_vis));
+          surface_vol.setSensitiveDetector(sens);
+
+          dd4hep::Volume cut1_vol(cut1_name, cut1_solid, cut1_mat);
+          cut1_vol.setVisAttributes(theDetector.visAttributes(cut1_vis));
+
+          dd4hep::Volume cut2_vol(cut2_name, cut2_solid, cut2_mat);
+          cut2_vol.setVisAttributes(theDetector.visAttributes(cut2_vis));
+
+          dd4hep::Volume cut3_vol(cut3_name, cut3_solid, cut3_mat);
+          cut3_vol.setVisAttributes(theDetector.visAttributes(cut3_vis));
+
+          dd4hep::Volume BC420_vol(BC420_name,BC420_solid,BC420_mat);
+          BC420_vol.setVisAttributes(theDetector.visAttributes(BC420_vis));
+
+          dd4hep::Volume SiPM_vol(SiPM_name, SiPM_solid, SiPM_mat);
+          SiPM_vol.setVisAttributes(theDetector.visAttributes(SiPM_vis));
+          SiPM_vol.setSensitiveDetector(sens);
+
+          BC420_vol.placeVolume(cut2_vol,cut2_transform);
+          BC420_vol.placeVolume(cut3_vol,cut3_transform);
+          dd4hep::PlacedVolume cladding_place, core_place;
+          for(xml_coll_t dcSection(x_strip,_U(section)); dcSection; dcSection++)
+          {
+            xml_comp_t x_section = dcSection;
+            std::string section_name = x_section.nameStr();
+            dd4hep::Material section_mat = theDetector.material(x_section.materialStr());
+
+            xml_dim_t section_pos(x_section.child(_U(position)));
+            xml_dim_t section_dim(x_section.child(_U(dimensions)));
+
+            dd4hep::Tube section_solid(section_dim.rmin(),section_dim.rmax(),fiber_halfZ);
+            dd4hep::Volume section_vol(section_name,section_solid,section_mat);
+            section_vol.setVisAttributes(theDetector.visAttributes(x_section.visStr()));
+
+            dd4hep::Transform3D section_transform(dd4hep::Rotation3D(),dd4hep::Position(section_pos.x(),section_pos.y(),section_pos.z()));
+            if (x_section.id() == 0)
+            {
+              cladding_place = BC420_vol.placeVolume(section_vol,section_transform);
+            }
+            if (x_section.id() == 1)
+            {
+              core_place = BC420_vol.placeVolume(section_vol,section_transform);
+            }
+          }
+          surface_vol.placeVolume(cut1_vol,cut1_transform);
+          dd4hep::PlacedVolume BC420_place = surface_vol.placeVolume(BC420_vol,BC420_transform);
+          BC420_place.addPhysVolID("Stripe",i2+1);
+          dd4hep::PlacedVolume surf_place = strip_vol.placeVolume(surface_vol,surface_transform);
+          int lnum = ( ( 2 * ( i0 % 2 ) - 1 ) * ( 2 * i1 - 1 ) + 1 ) / 2;
+          surf_place.addPhysVolID("Layer", lnum+1);
+          surf_place.addPhysVolID("SiPM",0);
+          dd4hep::PlacedVolume SiPM_place1 = strip_vol.placeVolume(SiPM_vol,SiPM_transform1);
+          SiPM_place1.addPhysVolID("SiPM",1);
+          dd4hep::PlacedVolume SiPM_place2 = strip_vol.placeVolume(SiPM_vol,SiPM_transform2);
+          SiPM_place2.addPhysVolID("SiPM",2);
+          env_vol.placeVolume(strip_vol,strip_transform);
+          dd4hep::OpticalSurfaceManager surfMgr = theDetector.surfaceManager();
+          std::string optical_surf = strip_name + "_surf";
+          std::string optical_fiber = strip_name + "_fiber";
+          dd4hep::OpticalSurface Surf_stripe = surfMgr.opticalSurface("Surf__stripe");
+          dd4hep::OpticalSurface Surf_fiber = surfMgr.opticalSurface("Surf__fiber");
+          dd4hep::BorderSurface surface_stripe( theDetector, sdet, optical_surf, Surf_stripe, BC420_place, surf_place);
+          dd4hep::BorderSurface surface_fiber( theDetector, sdet, optical_fiber, Surf_fiber, core_place, cladding_place);
+        }
+      }
+      dd4hep::PlacedVolume env_place = envelope.placeVolume(env_vol,env_transform);
+      env_place.addPhysVolID("Env",i0+1);
+    }
+    dd4hep::PlacedVolume pv;
+    dd4hep::DetElement both_endcaps(det_name,0);
+    dd4hep::Volume motherVol = theDetector.pickMotherVolume(both_endcaps);
+    dd4hep::DetElement sdetA = sdet;
+    dd4hep::Ref_t(sdetA)->SetName((det_name+"_A").c_str());
+    dd4hep::DetElement sdetB = sdet.clone(det_name+"_B",3);
+    pv = assembly.placeVolume(envelope,dd4hep::Transform3D(dd4hep::Rotation3D(dd4hep::RotationX(90*dd4hep::degree)),dd4hep::Position(0,pos.y(),0)));
+    pv.addPhysVolID("Endcap",1);
+
+    sdetA.setPlacement(pv);
+
+    pv = assembly.placeVolume(envelope,dd4hep::Transform3D(dd4hep::Rotation3D(dd4hep::RotationX(90*dd4hep::degree)),dd4hep::Position(0,-1*pos.y(),0)));
+    pv.addPhysVolID("Endcap",2);
+
+    sdetB.setPlacement(pv);
+
+    pv = motherVol.placeVolume(assembly);
+//    pv.addPhysVolID("system",x_det.id());
+    both_endcaps.setPlacement(pv);
+    both_endcaps.add(sdetA);
+    both_endcaps.add(sdetB);
+
+    MYDEBUG("create_detector DONE. ");
+    return both_endcaps;
+}
+
+DECLARE_DETELEMENT(Muon_Endcap_v01, create_detector)
diff --git a/Examples/options/dumpid.py b/Examples/options/dumpid.py
index ef9a45ce18c6fbb86fb1dc8ed2dc79f4cf32dc88..f4111bc1cb14914bce220c5bfa0d552fe784b79f 100644
--- a/Examples/options/dumpid.py
+++ b/Examples/options/dumpid.py
@@ -28,7 +28,7 @@ geosvc.compact = geometry_path
 ##############################################################################
 
 from Configurables import k4DataSvc
-dsvc = k4DataSvc("EventDataSvc", input="test-detsim10.root")
+dsvc = k4DataSvc("EventDataSvc", input="CRD-o1-v01-SimRec00.root")
 
 ##############################################################################
 # NTuple Svc
diff --git a/Simulation/DetSimGeom/src/AnExampleDetElemTool.cpp b/Simulation/DetSimGeom/src/AnExampleDetElemTool.cpp
index 00c84c75eaebcedad22265694d9c08ca6d081988..bfcf35c54186a15d50cac039ec572516e7c2f98c 100644
--- a/Simulation/DetSimGeom/src/AnExampleDetElemTool.cpp
+++ b/Simulation/DetSimGeom/src/AnExampleDetElemTool.cpp
@@ -149,6 +149,22 @@ AnExampleDetElemTool::ConstructSDandField() {
 		  }
 		}
             }
+            if (typ=="muonbarrel") {
+              m_muonbarrel_sdtool = ToolHandle<ISensDetTool>("MuonBarrelSensDetTool");
+              if (m_muonbarrel_sdtool) {
+                info() << "Find the MuonBarrelSensDetTool." << endmsg;
+                g4sd = m_muonbarrel_sdtool->createSD(nam);
+                info() << "create g4SD: " << g4sd << endmsg;
+              }
+            }
+            if (typ=="muonendcap") {
+              m_muonendcap_sdtool = ToolHandle<ISensDetTool>("MuonEndcapSensDetTool");
+              if (m_muonendcap_sdtool) {
+                info() << "Find the MuonEndcapSensDetTool." << endmsg;
+                g4sd = m_muonendcap_sdtool->createSD(nam);
+                info() << "create g4SD: " << g4sd << endmsg;
+              }
+            }
         }
         
         if (!g4sd) {
@@ -229,6 +245,8 @@ AnExampleDetElemTool::initialize() {
     m_calo_sdtool = ToolHandle<ISensDetTool>("CalorimeterSensDetTool");
     m_driftchamber_sdtool = ToolHandle<ISensDetTool>("DriftChamberSensDetTool");
     m_tpc_sdtool = ToolHandle<ISensDetTool>("TimeProjectionChamberSensDetTool");
+    m_muonbarrel_sdtool = ToolHandle<ISensDetTool>("MuonBarrelSensDetTool");
+    m_muonendcap_sdtool = ToolHandle<ISensDetTool>("MuonEndcapSensDetTool");
 
     return sc;
 }
diff --git a/Simulation/DetSimGeom/src/AnExampleDetElemTool.h b/Simulation/DetSimGeom/src/AnExampleDetElemTool.h
index 1b3a923f1f317a3c5e35b9d5d54eb30c84a0b097..74442d777db44de4c7d8b2a0a9063034f09eee5d 100644
--- a/Simulation/DetSimGeom/src/AnExampleDetElemTool.h
+++ b/Simulation/DetSimGeom/src/AnExampleDetElemTool.h
@@ -38,6 +38,8 @@ private:
     ToolHandle<ISensDetTool> m_driftchamber_sdtool;
     ToolHandle<ISensDetTool> m_tpc_sdtool;
     ToolHandle<ISensDetTool> m_tracker_sdtool;
+    ToolHandle<ISensDetTool> m_muonbarrel_sdtool;
+    ToolHandle<ISensDetTool> m_muonendcap_sdtool;
 };
 
 #endif
diff --git a/Simulation/DetSimSD/src/MuonBarrelSensDetTool.cpp b/Simulation/DetSimSD/src/MuonBarrelSensDetTool.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..c8425500154fad4bb82ab99b5f294bc77ea4f7f8
--- /dev/null
+++ b/Simulation/DetSimSD/src/MuonBarrelSensDetTool.cpp
@@ -0,0 +1,47 @@
+#include "MuonBarrelSensDetTool.h"
+
+#include "G4VSensitiveDetector.hh"
+
+#include "DD4hep/Detector.h"
+
+#include "MuonBarrelSensitiveDetector.h"
+#include "TrackerCombineSensitiveDetector.h"
+
+#include "CLHEP/Units/SystemOfUnits.h"
+
+DECLARE_COMPONENT(MuonBarrelSensDetTool)
+
+StatusCode MuonBarrelSensDetTool::initialize() {
+  StatusCode sc;
+  debug() << "initialize() " << endmsg;
+  
+  m_geosvc = service<IGeomSvc>("GeomSvc");
+  if (!m_geosvc) {
+    error() << "Failed to find GeomSvc." << endmsg;
+    return StatusCode::FAILURE;
+  }
+  
+  return AlgTool::initialize();
+}
+
+StatusCode MuonBarrelSensDetTool::finalize() {
+  StatusCode sc;
+  
+  return sc;
+}
+
+G4VSensitiveDetector* MuonBarrelSensDetTool::createSD(const std::string& name) {
+  debug() << "createSD for " << name << endmsg;
+  
+  dd4hep::Detector* dd4hep_geo = m_geosvc->lcdd();
+  auto sens = dd4hep_geo->sensitiveDetector(name);
+  G4VSensitiveDetector* sd = nullptr;
+  if(sens.combineHits()){
+    sd = new TrackerCombineSensitiveDetector(name, *dd4hep_geo);
+  }
+  else{
+    sd = new MuonBarrelSensitiveDetector(name, *dd4hep_geo);
+  }
+
+  return sd;
+}
diff --git a/Simulation/DetSimSD/src/MuonBarrelSensDetTool.h b/Simulation/DetSimSD/src/MuonBarrelSensDetTool.h
new file mode 100644
index 0000000000000000000000000000000000000000..137fe9754fe91faff55d18de5d02f5f09b9df3ae
--- /dev/null
+++ b/Simulation/DetSimSD/src/MuonBarrelSensDetTool.h
@@ -0,0 +1,32 @@
+#ifndef MuonBarrelSensDetTool_h
+#define MuonBarrelSensDetTool_h
+
+
+#include "GaudiKernel/AlgTool.h"
+#include "GaudiKernel/ToolHandle.h"
+#include "DetSimInterface/ISensDetTool.h"
+#include "DetInterface/IGeomSvc.h"
+
+#include "DD4hep/DD4hepUnits.h"
+
+class MuonBarrelSensDetTool: public extends<AlgTool, ISensDetTool> {
+  
+ public:
+
+  using extends::extends;
+
+  /// Overriding initialize and finalize
+  StatusCode initialize() override;
+  StatusCode finalize() override;
+
+  /// Override ISensDetTool
+  virtual G4VSensitiveDetector* createSD(const std::string& name) override;
+
+private:
+
+  // in order to initialize SD, we need to get the lcdd()
+  SmartIF<IGeomSvc> m_geosvc;
+
+};
+
+#endif
diff --git a/Simulation/DetSimSD/src/MuonBarrelSensitiveDetector.cpp b/Simulation/DetSimSD/src/MuonBarrelSensitiveDetector.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..56a2606152af8fda56dce14d317e4c3db025c20b
--- /dev/null
+++ b/Simulation/DetSimSD/src/MuonBarrelSensitiveDetector.cpp
@@ -0,0 +1,86 @@
+#include "MuonBarrelSensitiveDetector.h"
+
+#include "G4Step.hh"
+#include "G4VProcess.hh"
+//#include "G4SteppingManager.hh"
+#include "G4SDManager.hh"
+//#include "UserTrackInformation.hh"
+#include "DD4hep/DD4hepUnits.h"
+
+MuonBarrelSensitiveDetector::MuonBarrelSensitiveDetector(const std::string& name,
+								 dd4hep::Detector& description)
+  : DDG4SensitiveDetector(name, description),
+    m_hc(nullptr){
+  
+  G4String CollName=name+"Collection";
+  collectionName.insert(CollName);
+}
+
+void MuonBarrelSensitiveDetector::Initialize(G4HCofThisEvent* HCE){
+  m_hc = new HitCollection(GetName(), collectionName[0]);
+  int HCID = G4SDManager::GetSDMpointer()->GetCollectionID(m_hc);
+  HCE->AddHitsCollection( HCID, m_hc ); 
+}
+
+G4bool MuonBarrelSensitiveDetector::ProcessHits(G4Step* step, G4TouchableHistory*){
+  G4TouchableHandle touchPost = step->GetPostStepPoint()->GetTouchableHandle(); 
+  G4TouchableHandle touchPre  = step->GetPreStepPoint()->GetTouchableHandle();
+  auto currentTrack = step->GetTrack();
+  auto pname = currentTrack->GetParticleDefinition()->GetParticleName();
+  auto touchable = step->GetPreStepPoint()->GetTouchable();
+  auto physical = touchable->GetVolume();
+  if ( physical->GetName() == "surface" )
+  {
+      if ( pname == "opticalphoton" )
+      {
+        G4double random = G4UniformRand();
+        if(random < 0.1)
+        {
+          currentTrack->SetTrackStatus(fStopAndKill);
+        }
+      }
+  } 
+  dd4hep::sim::Geant4StepHandler h(step);
+  if (fabs(h.trackDef()->GetPDGCharge()) < 0.01) return true;
+
+  dd4hep::Position prePos    = h.prePos();
+  dd4hep::Position postPos   = h.postPos();
+  dd4hep::Position direction = postPos - prePos;
+  dd4hep::Position position  = mean_direction(prePos,postPos);
+  double   hit_len   = direction.R();
+  if (hit_len < 1E-9) return true;
+  if (hit_len > 0) {
+    double new_len = mean_length(h.preMom(),h.postMom())/hit_len;
+    direction *= new_len/hit_len;
+  }
+
+  dd4hep::sim::Geant4TrackerHit* hit = nullptr;
+  hit = new dd4hep::sim::Geant4TrackerHit(h.track->GetTrackID(),
+					  h.track->GetDefinition()->GetPDGEncoding(),
+					  step->GetTotalEnergyDeposit(),
+					  h.track->GetGlobalTime());
+
+  if ( hit )  {
+    int i = 0;
+    if ( pname == "opticalphoton" && physical->GetName() == "SiPM")
+    {
+      i = 1;
+    }
+    hit->cellID  = i * getCellID( step ) ;
+    hit->energyDeposit =  step->GetTotalEnergyDeposit();
+    hit->position = position;
+    hit->momentum = direction;
+    hit->length   = hit_len;
+    m_hc->insert(hit);
+    if ( physical->GetName() == "SiPM" )
+    {
+      currentTrack->SetTrackStatus(fStopAndKill);
+    }
+    return true;
+  }
+  throw std::runtime_error("new() failed: Cannot allocate hit object");
+  return false;
+}
+
+void MuonBarrelSensitiveDetector::EndOfEvent(G4HCofThisEvent* HCE){
+}
diff --git a/Simulation/DetSimSD/src/MuonBarrelSensitiveDetector.h b/Simulation/DetSimSD/src/MuonBarrelSensitiveDetector.h
new file mode 100644
index 0000000000000000000000000000000000000000..0974e8b641a1999dccf1840f63f798d90d7fa36f
--- /dev/null
+++ b/Simulation/DetSimSD/src/MuonBarrelSensitiveDetector.h
@@ -0,0 +1,21 @@
+
+#ifndef MuonBarrelSensitiveDetector_h
+#define MuonBarrelSensitiveDetector_h
+
+#include "DetSimSD/DDG4SensitiveDetector.h"
+#include "DDG4/Defs.h"
+
+class MuonBarrelSensitiveDetector: public DDG4SensitiveDetector {
+ public:
+  MuonBarrelSensitiveDetector(const std::string& name, dd4hep::Detector& description);
+  
+  void Initialize(G4HCofThisEvent* HCE);
+  G4bool ProcessHits(G4Step* step, G4TouchableHistory* history);
+  void EndOfEvent(G4HCofThisEvent* HCE);
+  
+ protected:
+
+  HitCollection* m_hc = nullptr;
+  
+};
+#endif
diff --git a/Simulation/DetSimSD/src/MuonEndcapSensDetTool.cpp b/Simulation/DetSimSD/src/MuonEndcapSensDetTool.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..ca89e8d6bebe28b06823834aac4b5a73fbbea708
--- /dev/null
+++ b/Simulation/DetSimSD/src/MuonEndcapSensDetTool.cpp
@@ -0,0 +1,47 @@
+#include "MuonEndcapSensDetTool.h"
+
+#include "G4VSensitiveDetector.hh"
+
+#include "DD4hep/Detector.h"
+
+#include "MuonEndcapSensitiveDetector.h"
+#include "TrackerCombineSensitiveDetector.h"
+
+#include "CLHEP/Units/SystemOfUnits.h"
+
+DECLARE_COMPONENT(MuonEndcapSensDetTool)
+
+StatusCode MuonEndcapSensDetTool::initialize() {
+  StatusCode sc;
+  debug() << "initialize() " << endmsg;
+  
+  m_geosvc = service<IGeomSvc>("GeomSvc");
+  if (!m_geosvc) {
+    error() << "Failed to find GeomSvc." << endmsg;
+    return StatusCode::FAILURE;
+  }
+  
+  return AlgTool::initialize();
+}
+
+StatusCode MuonEndcapSensDetTool::finalize() {
+  StatusCode sc;
+  
+  return sc;
+}
+
+G4VSensitiveDetector* MuonEndcapSensDetTool::createSD(const std::string& name) {
+  debug() << "createSD for " << name << endmsg;
+  
+  dd4hep::Detector* dd4hep_geo = m_geosvc->lcdd();
+  auto sens = dd4hep_geo->sensitiveDetector(name);
+  G4VSensitiveDetector* sd = nullptr;
+  if(sens.combineHits()){
+    sd = new TrackerCombineSensitiveDetector(name, *dd4hep_geo);
+  }
+  else{
+    sd = new MuonEndcapSensitiveDetector(name, *dd4hep_geo);
+  }
+
+  return sd;
+}
diff --git a/Simulation/DetSimSD/src/MuonEndcapSensDetTool.h b/Simulation/DetSimSD/src/MuonEndcapSensDetTool.h
new file mode 100644
index 0000000000000000000000000000000000000000..4d1bfdad4231ed6ed75c3b4885ab1962815eb4ab
--- /dev/null
+++ b/Simulation/DetSimSD/src/MuonEndcapSensDetTool.h
@@ -0,0 +1,32 @@
+#ifndef MuonEndcapSensDetTool_h
+#define MuonEndcapSensDetTool_h
+
+
+#include "GaudiKernel/AlgTool.h"
+#include "GaudiKernel/ToolHandle.h"
+#include "DetSimInterface/ISensDetTool.h"
+#include "DetInterface/IGeomSvc.h"
+
+#include "DD4hep/DD4hepUnits.h"
+
+class MuonEndcapSensDetTool: public extends<AlgTool, ISensDetTool> {
+  
+ public:
+
+  using extends::extends;
+
+  /// Overriding initialize and finalize
+  StatusCode initialize() override;
+  StatusCode finalize() override;
+
+  /// Override ISensDetTool
+  virtual G4VSensitiveDetector* createSD(const std::string& name) override;
+
+private:
+
+  // in order to initialize SD, we need to get the lcdd()
+  SmartIF<IGeomSvc> m_geosvc;
+
+};
+
+#endif
diff --git a/Simulation/DetSimSD/src/MuonEndcapSensitiveDetector.cpp b/Simulation/DetSimSD/src/MuonEndcapSensitiveDetector.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..0efa231f13b23b03ddbb208699c9093c4880615b
--- /dev/null
+++ b/Simulation/DetSimSD/src/MuonEndcapSensitiveDetector.cpp
@@ -0,0 +1,86 @@
+#include "MuonEndcapSensitiveDetector.h"
+
+#include "G4Step.hh"
+#include "G4VProcess.hh"
+//#include "G4SteppingManager.hh"
+#include "G4SDManager.hh"
+//#include "UserTrackInformation.hh"
+#include "DD4hep/DD4hepUnits.h"
+
+MuonEndcapSensitiveDetector::MuonEndcapSensitiveDetector(const std::string& name,
+								 dd4hep::Detector& description)
+  : DDG4SensitiveDetector(name, description),
+    m_hc(nullptr){
+  
+  G4String CollName=name+"Collection";
+  collectionName.insert(CollName);
+}
+
+void MuonEndcapSensitiveDetector::Initialize(G4HCofThisEvent* HCE){
+  m_hc = new HitCollection(GetName(), collectionName[0]);
+  int HCID = G4SDManager::GetSDMpointer()->GetCollectionID(m_hc);
+  HCE->AddHitsCollection( HCID, m_hc ); 
+}
+
+G4bool MuonEndcapSensitiveDetector::ProcessHits(G4Step* step, G4TouchableHistory*){
+  G4TouchableHandle touchPost = step->GetPostStepPoint()->GetTouchableHandle(); 
+  G4TouchableHandle touchPre  = step->GetPreStepPoint()->GetTouchableHandle();
+  auto currentTrack = step->GetTrack();
+  auto pname = currentTrack->GetParticleDefinition()->GetParticleName();
+  auto touchable = step->GetPreStepPoint()->GetTouchable();
+  auto physical = touchable->GetVolume();
+  if ( physical->GetName() == "surface" )
+  {
+      if ( pname == "opticalphoton" )
+      {
+        G4double random = G4UniformRand();
+        if(random < 0.1)
+        {
+          currentTrack->SetTrackStatus(fStopAndKill);
+        }
+      }
+  } 
+  dd4hep::sim::Geant4StepHandler h(step);
+  if (fabs(h.trackDef()->GetPDGCharge()) < 0.01) return true;
+
+  dd4hep::Position prePos    = h.prePos();
+  dd4hep::Position postPos   = h.postPos();
+  dd4hep::Position direction = postPos - prePos;
+  dd4hep::Position position  = mean_direction(prePos,postPos);
+  double   hit_len   = direction.R();
+  if (hit_len < 1E-9) return true;
+  if (hit_len > 0) {
+    double new_len = mean_length(h.preMom(),h.postMom())/hit_len;
+    direction *= new_len/hit_len;
+  }
+
+  dd4hep::sim::Geant4TrackerHit* hit = nullptr;
+  hit = new dd4hep::sim::Geant4TrackerHit(h.track->GetTrackID(),
+					  h.track->GetDefinition()->GetPDGEncoding(),
+					  step->GetTotalEnergyDeposit(),
+					  h.track->GetGlobalTime());
+
+  if ( hit )  {
+    int i = 0;
+    if ( pname == "opticalphoton" && physical->GetName() == "SiPM")
+    {
+      i = 1;
+    }
+    hit->cellID  = i * getCellID( step ) ;
+    hit->energyDeposit =  step->GetTotalEnergyDeposit();
+    hit->position = position;
+    hit->momentum = direction;
+    hit->length   = hit_len;
+    m_hc->insert(hit);
+    if ( physical->GetName() == "SiPM" )
+    {
+      currentTrack->SetTrackStatus(fStopAndKill);
+    }
+    return true;
+  }
+  throw std::runtime_error("new() failed: Cannot allocate hit object");
+  return false;
+}
+
+void MuonEndcapSensitiveDetector::EndOfEvent(G4HCofThisEvent* HCE){
+}
diff --git a/Simulation/DetSimSD/src/MuonEndcapSensitiveDetector.h b/Simulation/DetSimSD/src/MuonEndcapSensitiveDetector.h
new file mode 100644
index 0000000000000000000000000000000000000000..a19d3eaaaa47606836680ab2e9be22d503491eb4
--- /dev/null
+++ b/Simulation/DetSimSD/src/MuonEndcapSensitiveDetector.h
@@ -0,0 +1,21 @@
+
+#ifndef MuonEndcapSensitiveDetector_h
+#define MuonEndcapSensitiveDetector_h
+
+#include "DetSimSD/DDG4SensitiveDetector.h"
+#include "DDG4/Defs.h"
+
+class MuonEndcapSensitiveDetector: public DDG4SensitiveDetector {
+ public:
+  MuonEndcapSensitiveDetector(const std::string& name, dd4hep::Detector& description);
+  
+  void Initialize(G4HCofThisEvent* HCE);
+  G4bool ProcessHits(G4Step* step, G4TouchableHistory* history);
+  void EndOfEvent(G4HCofThisEvent* HCE);
+  
+ protected:
+
+  HitCollection* m_hc = nullptr;
+  
+};
+#endif