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Merged
veprbl merged 25 commits into from
Apr 16, 2026
Merged

Multi sensitive volume clusters #1021

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58ac412
MPGD Barrel: Add "5SensVolumes" versions of XML. Modified Detector Co…
Nov 13, 2025
0b0b444
Merge branch 'main' into Multi-SensitiveVolume-MPGD
Nov 14, 2025
84febdd
MPGD Barrel: Simplification. "5SensVolumes" renamed "2DStrip". Add de…
Nov 16, 2025
22eec1e
Merge branch 'main' into Multi-SensitiveVolume-MPGD
Nov 26, 2025
5c3e53f
MPGD Barrel: Backward compatibility via cmake option "-DMPGD_INSTALL_…
Nov 26, 2025
f30c59f
MPGD Barrel: Install "_pixel" flavors of XMLs by default. Erase pre-e…
Dec 8, 2025
53a2b0b
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Dec 8, 2025
9e66406
Merge branch 'main' into Multi-SensitiveVolume-MPGD
ybedfer Dec 8, 2025
efc4095
Merge branch 'main' into Multi-SensitiveVolume-MPGD
ybedfer Dec 19, 2025
8c4a367
MPGD: Cancel switching _pixel/_2DStrip from cmake. Add a special _2DS…
Dec 19, 2025
89a123a
MPGD: 2DStrip,v.2 (realistic pitch and correct apperture) StripID fro…
ybedfer Feb 1, 2026
9809ef0
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Feb 1, 2026
9740a7c
Barrel MPGDs: Merge with comit #896b85e80.
ybedfer Mar 26, 2026
cbcb1de
Merge branch 'main' into Multi-SensitiveVolume-Clusters
ybedfer Mar 26, 2026
a0b4c19
CyMBaL detector builder: cosmetics (nicer layout).
ybedfer Mar 26, 2026
68546e0
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Mar 26, 2026
9843dd8
Merge branch 'main' into Multi-SensitiveVolume-Clusters
veprbl Apr 7, 2026
6db9d3a
MPGDOuterBarrel: Fix mistake in XML: now both Radiator subVolumes hav…
ybedfer Apr 7, 2026
5e8cf6a
Merge branch 'main' into Multi-SensitiveVolume-Clusters
ybedfer Apr 13, 2026
1ac9e60
MPGD XML: Commenting the two alternatives for the Segmentation of Hel…
ybedfer Apr 14, 2026
d68af27
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Apr 14, 2026
3efd7f8
MPGD XML: New attempt at improving the comments.
ybedfer Apr 15, 2026
cc637a4
Merge branch 'Multi-SensitiveVolume-Clusters' of github.com:eic/epic …
ybedfer Apr 15, 2026
ed1a98b
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Apr 15, 2026
3630025
Merge branch 'main' into Multi-SensitiveVolume-Clusters
veprbl Apr 15, 2026
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4 changes: 2 additions & 2 deletions compact/tracking/mpgd_barrel.xml
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Expand Up @@ -3,7 +3,7 @@

<lccdd>
<documentation>
Title: Micro Pattern Gas Detectors
Title: Micro Pattern Gas Detectors Cylindrical Barrel Layer
Author: @mposik1983
Status: development
Version: 2.0
Expand Down Expand Up @@ -34,7 +34,7 @@
<constant name="MMDriftCuGround_thickness" value="0.41*um"/>
<comment> FIXME: No support material is here, so fudge factor used to bring material budget to ~0.5% for barrel. </comment>
<constant name="MMFudgeInnerMPGDBarrel_thickness" value="570*um"/>
<comment> FIXME: No definite plan for connections/services to the inner sectors yet, so guess value. </comment>
<comment> FIXME: No definite plan for connections/services to the inner sections yet, so guess value. </comment>
<constant name="MMInnerService_thickness" value="0.05*cm"/>
<comment> ...Dimensions </comment>
<constant name="MMModuleWidth" value="46.0*cm"/>
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65 changes: 43 additions & 22 deletions compact/tracking/mpgd_barrel_2DStrip.xml
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Expand Up @@ -6,13 +6,21 @@
Title: Micro Pattern Gas Detectors Cylindrical Barrel Layer
Author: @ybedfer
Status: development
Version: 2.1
Version: 2.2
</documentation>

<define>
<comment>
Inner MPGD tracking layer = CyMBaL
Note: MPGDs come in two distinct flavours: pixel and 2DStrip.
Inner MPGD tracking layer (=CyMBaL) with realistic pitch
Note: MPGDs come in two distinct flavours: pixel and 2DStrip, each tagged
with a distinctive setting of the "InnerMPGDBarrel_2DStrip" constant.
- 2DStrip is meant for the Multiple Sensitive Volume implementation of
the strip digitization in EICrecon's "MPGDTrackerDigi".
- Two of the Sensitive Volumes, '(phi|Z)StripThinGap", have a meaningful
Segmentation, with a pitch corresponding to that of the actual detector.
- The other three Sensitive Volumes are Helpers, used only in the
processing of MC data. The particulars of their segmentation are
disregarded by "MPGDTrackerDigi".
</comment>
<constant name="InnerMPGDBarrel_2DStrip" value="1"/>

Expand Down Expand Up @@ -55,10 +63,17 @@
<constant name="InnerMPGDBarrelLayer_rmin" value="InnerMPGDBarrel_rmin"/>
<constant name="InnerMPGDBarrelLayer_rmax" value="MMOuterSection_R + MMRadial_offset / 2 + 1*cm"/>
<constant name="rmin2Sensor" value="MMDriftCuGround_thickness + MMDriftKapton_thickness + MMDriftCuElectrode_thickness + MMGasGap_thickness / 2" />
<comment> "MMModuleWidth" is to be understood as the width at the inner wall. Width expands as one moves away from it. </comment>
<constant name="MMInnerSensor_R" value="MMInnerSection_R + rmin2Sensor" />
<constant name="MMOuterSensor_R" value="MMOuterSection_R + rmin2Sensor" />
<constant name="MMInnerAperture" value="MMModuleWidth/MMInnerSensor_R" />
<constant name="MMOuterAperture" value="MMModuleWidth/MMOuterSensor_R" />
<constant name="MMInnerAperture" value="MMModuleWidth/MMInnerSection_R" />
<constant name="MMOuterAperture" value="MMModuleWidth/MMOuterSection_R" />
<comment> Strip layout: Pitch is derived from size and # of strips, assuming sensitive area to fill all available space. </comment>
<constant name="MMnStripsPhi" value = "512" />
<constant name="MMInnerPitchPhi" value = "MMInnerAperture/MMnStripsPhi" />
<constant name="MMOuterPitchPhi" value = "MMOuterAperture/MMnStripsPhi" />
<constant name="MMnStripsZ" value = "512" />
<constant name="MMPitchZ" value = "MMModuleLength/MMnStripsZ" />
</define>

<detectors>
Expand All @@ -82,14 +97,14 @@
<frame name="MMOutwardFrame" material="CarbonFiber" width="MMOutwardFrameWidth" vis="TrackerServiceVis" />
<service name="MMInnerService" material="Kapton" thickness="MMInnerService_thickness" vis="TrackerServiceVis" /> <comment> This includes cables => Kapton as a material is overoptimistic. </comment>
<comment> Going from the inside (sensitive) side to the readout side </comment>
<module_component name="DriftCuGround" thickness="MMDriftCuGround_thickness" material="Copper" vis="TrackerModuleVis"/>
<module_component name="DriftKapton" thickness="MMDriftKapton_thickness" material="Kapton" vis="TrackerVis" />
<module_component name="DriftCuGround" thickness="MMDriftCuGround_thickness" material="Copper" vis="TrackerModuleVis"/>
<module_component name="DriftKapton" thickness="MMDriftKapton_thickness" material="Kapton" vis="TrackerVis" />
<module_component name="DriftCuElectrode" thickness="MMDriftCuElectrode_thickness" material="Copper" vis="TrackerVis"/>
<module_component name="InnerRadiator" thickness="MMThickGap_thickness" material="Ar90IsoButane" sensitive="True" key="3" vis="TrackerMPGDGasVis"/>
<module_component name="pStripThinGap" thickness="MMThinGap_thickness" material="Ar90IsoButane" sensitive="True" key="1" vis="TrackerMPGDGasVis"/>
<module_component name="pixelThinGap" thickness="MMThinGap_thickness" material="Ar90IsoButane" sensitive="True" key="0" vis="TrackerMPGDGasVis"/>
<module_component name="nStripThinGap" thickness="MMThinGap_thickness" material="Ar90IsoButane" sensitive="True" key="2" vis="TrackerMPGDGasVis"/>
<module_component name="OuterRadiator" thickness="MMThickGap_thickness" material="Ar90IsoButane" sensitive="True" key="4" vis="TrackerMPGDGasVis"/>
<module_component name="BotRadiator" thickness="MMThickGap_thickness" material="Ar90IsoButane" sensitive="True" key="3" vis="TrackerMPGDGasVis"/>
<module_component name="phiStripThinGap" thickness="MMThinGap_thickness" material="Ar90IsoButane" sensitive="True" key="1" vis="TrackerMPGDGasVis"/>
<module_component name="ReferenceThinGap" thickness="MMThinGap_thickness" material="Ar90IsoButane" sensitive="True" key="0" vis="TrackerMPGDGasVis"/>
<module_component name="ZStripThinGap" thickness="MMThinGap_thickness" material="Ar90IsoButane" sensitive="True" key="2" vis="TrackerMPGDGasVis"/>
<module_component name="TopRadiator" thickness="MMThickGap_thickness" material="Ar90IsoButane" sensitive="True" key="4" vis="TrackerMPGDGasVis"/>
<module_component name="Mesh" thickness="MMMesh_thickness" material="MMGAS_InoxForMesh" vis="TrackerVis"/>
<module_component name="Fudge" thickness="MMFudgeInnerMPGDBarrel_thickness" material="Kapton" vis="TrackerVis"/>
<module_component name="Gas" thickness="MMGas_thickness" material="Ar90IsoButane" vis="TrackerMPGDGasVis"/>
Expand Down Expand Up @@ -124,22 +139,28 @@

<readouts>
<readout name="MPGDBarrelHits">
<comment> 768 strips in phi yield a segmentation of 2pi/8/768 ~= 1mrad. Which in turn, yields ~160 um in resolution.
<comment>
Each of the 5 Sensitive Volumes has a distinct segmentation tag, the
X-reference being done in the detector builder.
The grid_size's of the Helper Volumes (reference and radiators) are
arbitrary, to some extent.
Here, they are set equal to the detector's resolution. They may,
eventually, be set equal to its pitch.
</comment>
<segmentation type="MultiSegmentation" key="sensor">
<segmentation name="Inner" type="MultiSegmentation" key_value="0" key="strip">
<segmentation name="InnerPix" type="CylindricalGridPhiZ" key_value="0" grid_size_phi="1*mrad" grid_size_z="0.150*mm*sqrt(12)" radius="MMInnerSensor_R" />
<segmentation name="InnerPhi" type="CylindricalGridPhiZ" key_value="1" grid_size_phi="1*mrad" grid_size_z="MMModuleLength" radius="MMInnerSensor_R - MMThinGap_thickness" />
<segmentation name="InnerZ" type="CylindricalGridPhiZ" key_value="2" grid_size_phi="MMInnerAperture" grid_size_z="0.150*mm*sqrt(12)" radius="MMInnerSensor_R + MMThinGap_thickness" />
<segmentation name="InnerBot" type="CylindricalGridPhiZ" key_value="3" grid_size_phi="1*mrad" grid_size_z="0.150*mm*sqrt(12)" radius="MMInnerSensor_R - 3 * MMThinGap_thickness / 2 - MMThickGap_thickness / 2" />
<segmentation name="InnerTop" type="CylindricalGridPhiZ" key_value="4" grid_size_phi="1*mrad" grid_size_z="0.150*mm*sqrt(12)" radius="MMInnerSensor_R + 3 * MMThinGap_thickness / 2 + MMThickGap_thickness / 2" />
<segmentation name="InnerRef" type="CylindricalGridPhiZ" key_value="0" grid_size_phi="1*mrad" grid_size_z="0.150*mm*sqrt(12)" radius="MMInnerSensor_R" />
<segmentation name="InnerPhi" type="CylindricalGridPhiZ" key_value="1" grid_size_phi="MMInnerPitchPhi" grid_size_z="MMModuleLength" radius="MMInnerSensor_R - MMThinGap_thickness" offset_phi="MMInnerPitchPhi/2" />
<segmentation name="InnerZ" type="CylindricalGridPhiZ" key_value="2" grid_size_phi="MMInnerAperture" grid_size_z="MMPitchZ" radius="MMInnerSensor_R + MMThinGap_thickness" offset_z="MMPitchZ/2" />
<segmentation name="InnerBotRad" type="CylindricalGridPhiZ" key_value="3" grid_size_phi="1*mrad" grid_size_z="0.150*mm*sqrt(12)" radius="MMInnerSensor_R - 3 * MMThinGap_thickness / 2 - MMThickGap_thickness / 2" />
<segmentation name="InnerTopRad" type="CylindricalGridPhiZ" key_value="4" grid_size_phi="1*mrad" grid_size_z="0.150*mm*sqrt(12)" radius="MMInnerSensor_R + 3 * MMThinGap_thickness / 2 + MMThickGap_thickness / 2" />
</segmentation>
<segmentation name="Outer" type="MultiSegmentation" key_value="1" key="strip">
<segmentation name="OuterPix" type="CylindricalGridPhiZ" key_value="0" grid_size_phi="1*mrad" grid_size_z="0.150*mm*sqrt(12)" radius="MMOuterSensor_R" />
<segmentation name="OuterPhi" type="CylindricalGridPhiZ" key_value="1" grid_size_phi="1*mrad" grid_size_z="MMModuleLength" radius="MMOuterSensor_R - MMThinGap_thickness" />
<segmentation name="OuterZ" type="CylindricalGridPhiZ" key_value="2" grid_size_phi="MMOuterAperture" grid_size_z="0.150*mm*sqrt(12)" radius="MMOuterSensor_R + MMThinGap_thickness" />
<segmentation name="OuterTop" type="CylindricalGridPhiZ" key_value="3" grid_size_phi="1*mrad" grid_size_z="0.150*mm*sqrt(12)" radius="MMOuterSensor_R - 3 * MMThinGap_thickness / 2 - MMThickGap_thickness / 2" />
<segmentation name="OuterBot" type="CylindricalGridPhiZ" key_value="4" grid_size_phi="1*mrad" grid_size_z="0.150*mm*sqrt(12)" radius="MMOuterSensor_R + 3 * MMThinGap_thickness / 2 + MMThickGap_thickness / 2" />
<segmentation name="OuterPhi" type="CylindricalGridPhiZ" key_value="1" grid_size_phi="MMOuterPitchPhi" grid_size_z="MMModuleLength" radius="MMOuterSensor_R - MMThinGap_thickness" offset_phi="MMOuterPitchPhi/2" />
<segmentation name="OuterZ" type="CylindricalGridPhiZ" key_value="2" grid_size_phi="MMOuterAperture" grid_size_z="MMPitchZ" radius="MMOuterSensor_R + MMThinGap_thickness" offset_z="MMPitchZ/2" />
<segmentation name="OuterBotRad" type="CylindricalGridPhiZ" key_value="3" grid_size_phi="1*mrad" grid_size_z="0.150*mm*sqrt(12)" radius="MMOuterSensor_R - 3 * MMThinGap_thickness / 2 - MMThickGap_thickness / 2" />
<segmentation name="OuterTopRad" type="CylindricalGridPhiZ" key_value="4" grid_size_phi="1*mrad" grid_size_z="0.150*mm*sqrt(12)" radius="MMOuterSensor_R + 3 * MMThinGap_thickness / 2 + MMThickGap_thickness / 2" />
</segmentation>
</segmentation>
<id>system:8,layer:4,module:12,sensor:2,strip:28:4,phi:-16,z:-16</id>
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1 change: 0 additions & 1 deletion compact/tracking/mpgd_outerbarrel.xml
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Expand Up @@ -28,7 +28,6 @@
<constant name="MPGDOuterBarrelModule_rmax" value="MPGDOuterBarrelModule_rmin + MPGDOuterBarrelModule_allowed_space" />
<constant name="MPGDOuterBarrelModule_roffset" value="0.5*cm" />
<constant name="MPGDOuterBarrelModule_width" value="360*mm"/>
<constant name="MPGDOuterBarrel_length" value="MPGDOuterBarrelModule_zmin1 + MPGDOuterBarrelModule_zmin2"/>
<constant name="MPGDOuterBarrelModule_length" value="0.5*(MPGDOuterBarrelModule_zmin1 + MPGDOuterBarrelModule_zmin2 + MPGDOuterBarrelModule_zoverlap)"/>
<constant name="MPGDOuterBarrelModule_offset" value="0.5*(MPGDOuterBarrelModule_zmin2 - MPGDOuterBarrelModule_zmin1)"/>
<constant name="MPGDOuterBarrelModule_PCB_offset" value="110*mm"/>
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