diff --git a/compact/cb_CTD_Si.xml b/compact/cb_CTD_Si.xml
new file mode 100644
index 0000000000000000000000000000000000000000..06b4f825556ef7b826860bef188cdf11521ec55d
--- /dev/null
+++ b/compact/cb_CTD_Si.xml
@@ -0,0 +1,38 @@
+<lccdd>
+
+ <comment> Central Barrel Tracker Silicon </comment>
+
+ <define>
+ </define>
+
+ <limits>
+ </limits>
+
+ <regions>
+ </regions>
+
+ <display>
+ </display>
+
+ <detectors>
+ <detector id="cb_CTD_Si_ID" name="cb_CTD_Si" type="cb_CTD_Si" readout="cb_CTD_Si_Hits" vis="cb_CTDVis" insideTrackingVloume="true">
+ <dimensions rmin="cb_CTD_rmin" rmax="cb_CTD_rmax" length="cb_CTD_length" zmax="cb_CTD_zmax" gap="cb_CTD_Si_gap"/>
+ <layer repeat="cb_CTD_Si_layer" vis="cb_CTD_Si_layerVis">
+ <slice name="Silicon_slice" material="Si" sensitive="true"/>
+ </layer>
+ </detector>
+ </detectors>
+
+ <readouts>
+ <readout name="cb_CTD_Si_Hits">
+ <segmentation type="CartesianGridXY" grid_size_x="1.0*mm" grid_size_y="1.0*mm" />
+ <id>system:8,barrel:3,layer:4,x:32:-16,y:-16</id>
+ </readout>
+ </readouts>
+
+ <plugins>
+ </plugins>
+
+ <fields>
+ </fields>
+</lccdd>
diff --git a/compact/definitions.xml b/compact/definitions.xml
index 7f74152af6f01554247c30385d286c661b8c9bd8..1f454dc65c626784ec861a8f1a4054df08c30999 100644
--- a/compact/definitions.xml
+++ b/compact/definitions.xml
@@ -122,6 +122,8 @@
<constant name="SiTrackerEndcapP_Layer5_ID" value="69"/>
<constant name="SiTrackerEndcapN_Layer5_ID" value="70"/>
+ <constant name="cb_CTD_Si_ID" value="74"/>
+
<comment>
===================
(75-99 Reserved IDs
@@ -243,8 +245,8 @@
</comment>
<constant name="cb_Solenoid_rmin" value="0.0 * cm"/> <comment> Central Barrel Solenoid Inner diameter </comment>
<constant name="cb_Solenoid_rmax" value="137.0 * cm"/> <comment> Central Barrel Solenoid Outer diameter </comment>
- <constant name="cb_Solenoid_z" value="400.0 * cm"/>
- <constant name="cb_Solenoid_shift" value="0.0 * cm"/> <comment> Central Barrel Solenoid Size in Z direction </comment>
+ <constant name="cb_Solenoid_z" value="400.0 * cm"/> <comment> Central Barrel Solenoid Size in Z direction </comment>
+ <constant name="cb_Solenoid_shift" value="0.0 * cm"/>
<constant name="Solenoid_thickness" value="400*mm"/>
<constant name="Solenoid_rmin" value="2000.0*mm"/>
@@ -318,6 +320,27 @@
<constant name="SiliconTrackerOuterRadius" value="Solenoid_rmax/2.0"/>
<constant name="SiliconTrackerOuterBarrelLength" value="SolenoidLength/2.0"/>
+ <comment>
+ -------------------------------
+ Central Barrel Tracker - Global
+ -------------------------------
+ </comment>
+ <constant name="cb_CTD_rmin" value="21.0 * cm"/>
+ <constant name="cb_CTD_rmax" value="80.0 * cm"/>
+ <constant name="cb_CTD_zmax" value="200.0 * cm"/>
+ <comment> Original Global parameter </comment>
+ <!--
+ <constant name="cb_CTD_zmax" value="120.0 * cm"/>
+ -->
+ <constant name="cb_CTD_length" value="SolenoidLength - cb_CTD_zmax"/>
+ <comment> After fix cb_Solenoid parameters </comment>
+ <!--
+ <constant name="cb_CTD_length" value="cb_Solenoid_z - cb_CTD_zmax"/>
+ -->
+ <comment> Si layer opiton </comment>
+ <constant name="cb_CTD_Si_gap" value="5.0 * cm"/>
+ <constant name="cb_CTD_Si_layer" value="15"/>
+
<comment>
------------
Calorimeters
diff --git a/compact/display.xml b/compact/display.xml
index 7e5846d7c116a9978967203c3a11e04ea57205ac..81130895a31b7a1ae52aa2daa5af2ce38d196641 100644
--- a/compact/display.xml
+++ b/compact/display.xml
@@ -48,9 +48,11 @@
<vis name="RICHVis" alpha="0.5" r="1" g="0" b="1" showDaughters="false"/>
<vis name="BeamPipeVis" alpha="1" r= "0.75" g="0.75" b="0.75" showDaughters="true" visible="true"/>
- <vis name="cb_SolenoidVis" alpha="0.4" r= "0.1" g="0.0" b="0.1" showDaughters="true" visible="true"/>
- <vis name="ffi_ZDCVis" alpha="0.1" r= "0.1" g="0.0" b="1.0" showDaughters="true" visible="true"/>
- <vis name="ffi_ZDCmoduleVis" alpha="1.0" r= "0.1" g="1.0" b="0.9" showDaughters="true" visible="true"/>
+ <vis name="cb_SolenoidVis" alpha="0.4" r= "0.1" g="0.0" b="0.1" showDaughters="true" visible="true"/>
+ <vis name="ffi_ZDCVis" alpha="0.1" r= "0.1" g="0.0" b="1.0" showDaughters="true" visible="true"/>
+ <vis name="ffi_ZDCmoduleVis" alpha="1.0" r= "0.1" g="1.0" b="0.9" showDaughters="true" visible="true"/>
+ <vis name="cb_CTDVis" alpha="0.1" r= "0.1" g="0.0" b="1.0" showDaughters="true" visible="true"/>
+ <vis name="cb_CTD_Si_layerVis" alpha="1.0" r= "0.9" g="1.0" b="0.1" showDaughters="true" visible="true"/>
<comment>
Deprecated colors.
diff --git a/reference_detector.xml b/reference_detector.xml
index db0a52b76c7796d6581f981be0b256404480359f..5273af7b84b6b03b87e67300717f2e01bb4d90cc 100644
--- a/reference_detector.xml
+++ b/reference_detector.xml
@@ -114,6 +114,7 @@
<include ref="reference_detector/vertex_tracker.xml"/>
<include ref="compact/silicon_tracker.xml"/>
-->
+ <include ref="compact/cb_CTD_Si.xml"/>
<include ref="ip6/beampipe.xml"/>
<include ref="compact/ffi_ZDC.xml"/>
<include ref="compact/solenoid.xml"/>
diff --git a/src/cb_CTD_Si.cpp b/src/cb_CTD_Si.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..4aed32b4ac10437149b7555c171b3f2253c9fa31
--- /dev/null
+++ b/src/cb_CTD_Si.cpp
@@ -0,0 +1,68 @@
+#include <XML/Helper.h>
+//////////////////////////////////
+// Central Barrel Tracker Silicon
+//////////////////////////////////
+
+using namespace std;
+using namespace dd4hep;
+
+static Ref_t createDetector(Detector& desc, xml_h e, SensitiveDetector sens)
+{
+ xml_det_t x_det = e;
+ string detName = x_det.nameStr();
+ int detID = x_det.id();
+
+ xml_dim_t dim = x_det.dimensions();
+ double RIn = dim.rmin();
+ double ROut = dim.rmax();
+ double SizeZ = dim.length();
+ double SizeZCut = dim.zmax();
+ double SiLayerGap = dim.gap();
+
+ Material Vacuum = desc.material("Vacuum");
+
+ // Create Global Volume
+ Tube cb_CTD_GVol_Solid(RIn, ROut, SizeZ / 2.0, 0., 360.0 * deg);
+ Volume detVol("cb_CTD_GVol_Logic", cb_CTD_GVol_Solid, Vacuum);
+ detVol.setVisAttributes(desc.visAttributes(x_det.visStr()));
+
+ // Construct Silicon Layers
+ xml_comp_t x_layer = x_det.child(_U(layer));
+ const int repeat = x_layer.repeat();
+
+ xml_comp_t x_slice = x_layer.child(_U(slice));
+ Material slice_mat = desc.material(x_slice.materialStr());
+
+ double layerRIn[100];
+ double layerROut[100];
+
+ // Loop over layers
+ for(int i = 0; i < repeat; i++) {
+ layerRIn[i] = RIn + (SiLayerGap * i);
+ layerROut[i] = RIn + (0.01 + SiLayerGap * i);
+
+ if (layerROut[i] > ROut)
+ continue;
+
+ string logic_layer_name = detName + _toString(i, "_Logic_lay_%d");
+ Volume layerVol(logic_layer_name,Tube(layerRIn[i], layerROut[i], SizeZ / 2.0, 0.0, 360.0 * deg), slice_mat);
+ layerVol.setVisAttributes(desc,x_layer.visStr());
+ sens.setType("tracker");
+ layerVol.setSensitiveDetector(sens);
+
+ Position layer_pos = Position(0.0, 0.0, 0.0);
+ PlacedVolume layerPV = detVol.placeVolume(layerVol, layer_pos);
+ layerPV.addPhysVolID("layer", i+1);
+ }
+
+ DetElement det(detName, detID);
+ Volume motherVol = desc.pickMotherVolume(det);
+ Transform3D tr(RotationZYX(0.0, 0.0, 0.0), Position(0.0, 0.0, 0.0));
+ PlacedVolume detPV = motherVol.placeVolume(detVol, tr);
+ detPV.addPhysVolID("system", detID);
+ detPV.addPhysVolID("barrel", 1);
+ det.setPlacement(detPV);
+ return det;
+}
+
+DECLARE_DETELEMENT(cb_CTD_Si, createDetector)