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nat93Andrii Natochiipre-commit-ci[bot]wdconincAlexander Jentsch
authored
New far forward beampipe and cryostat model v2025 implementation (#893)
### Briefly, what does this PR introduce? This PR introduces a complete model of the cryostat (fwd and bwd) with detailed description of superconducting coils, support tubes, yokes, yoke shielding, heat shielding, and cryostat vessel. The fwd and rear sides were adjusted in order to avoid overlaps with off-momentum detectors and low-Q^2 tagger pipes. The corresponding STEP file can be found on SharePoint: EIC Public Sharing Docs → Documents → Experimental Program → ePIC → Engineering → STR-Files → IR6_CRYOSTAT_2200m_top_4-24-2025.stp [https://brookhavenlab.sharepoint.com/:u:/s/EICPublicSharingDocs/EdR44ODny1BEmMTTks61CCwBe8tJYMc0iWkPIYY_EjYEuw?e=2XLUEt] The changes have been communicated to TIC, IR, and MDP communities. ### What kind of change does this PR introduce? - [ ] Bug fix (issue #__) - [x] New feature (issue #__) - [ ] Documentation update - [ ] Other: __ ### Please check if this PR fulfills the following: - [ ] Tests for the changes have been added - [ ] Documentation has been added / updated - [x] Changes have been communicated to collaborators ### Does this PR introduce breaking changes? What changes might users need to make to their code? ### Does this PR change default behavior? Yes, it adds extra materials between the beam pipe (beam loss hot-spots) and the ePIC detector. It is crucial for the realistic detector background and dose calculations. --------- Co-authored-by: Andrii Natochii <natochii@bnl.gov> Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> Co-authored-by: Wouter Deconinck <wdconinc@gmail.com> Co-authored-by: Alexander Jentsch <ajentsch@bnl.gov> Co-authored-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
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‎compact/colors.xml‎

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<vis name="AnlProcess_Blue" alpha="1" r="0/256" g="100/256" b="202/256"/>
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<vis name="AnlOrange" alpha="1" r="255/256" g="121/256" b="0"/>
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<vis name="AnlRed" alpha="1" r="205/256" g="45/256 " b="45/256"/>
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<vis name="AnlCyan" alpha="1" r="0/256" g="255/256 " b="255/256"/>
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<vis name="AnlGold" alpha="1" r="248/256" g="188/256" b="0/256"/>
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<vis name="AnlBlue" alpha="1" r="0/256" g="96/256" b="156/256"/>
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<vis name="AnlTeal" alpha="1" r="0/256" g="161/256" b="156/256"/>

‎compact/display.xml‎

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<comment>
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Beam line with magnets
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</comment>
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<vis name="BeamPipeVis" ref="AnlLightGray" showDaughters="true" visible="true"/>
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<vis name="FFMagnetVis" ref="AnlGreen" showDaughters="true" visible="true"/>
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<vis name="FFMagnetCoilVis" ref="AnlRed" showDaughters="true" visible="true"/>
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<vis name="BeamPipeVis" ref="AnlLightGray" showDaughters="true" visible="true"/>
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<vis name="MagnetVis" ref="AnlBlue" showDaughters="true" visible="true"/>
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<vis name="MagnetCoilVis" ref="AnlGreen" showDaughters="true" visible="true"/>
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<vis name="MagnetSupportTubeVis" ref="AnlCyan" showDaughters="true" visible="true"/>
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<vis name="MagnetEndPlateVis" ref="AnlRed" showDaughters="true" visible="true"/>
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<vis name="MagnetHeatShieldVis" ref="AnlGray" showDaughters="true" visible="true"/>
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<vis name="MagnetCryoVis" ref="AnlOrange" showDaughters="true" visible="true"/>
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<comment>
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ZDC visualization

‎compact/display_detailed.xml‎

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<vis name="DIRCFrameVis" ref="AnlOrange" showDaughters="true" visible="true"/>
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<vis name="DIRCBarVis" ref="AnlTeal" showDaughters="true" visible="true"/>
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<comment>
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Beam line with magnets
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</comment>
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<vis name="BeamPipeVis" ref="AnlLightGray" showDaughters="true" visible="true"/>
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<vis name="FFMagnetVis" ref="AnlGreen" showDaughters="true" visible="true"/>
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<vis name="FFMagnetCoilVis" ref="AnlRed" showDaughters="true" visible="true"/>
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<comment>
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ZDC visualization
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</comment>

‎compact/display_geoviewer.xml‎

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<vis name="DIRCFrameVis" ref="AnlOrange" showDaughters="true" visible="true"/>
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<vis name="DIRCBarVis" ref="AnlTeal" showDaughters="true" visible="true"/>
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<comment>
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Beam line with magnets
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</comment>
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<vis name="BeamPipeVis" ref="AnlLightGray" showDaughters="true" visible="true"/>
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<vis name="FFMagnetVis" ref="AnlGreen" showDaughters="true" visible="true"/>
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<vis name="FFMagnetCoilVis" ref="AnlRed" showDaughters="true" visible="true"/>
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<comment>
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ZDC visualization
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</comment>

‎compact/far_backward/beamline_extension_electron.xml‎

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<!-- SPDX-License-Identifier: LGPL-3.0-or-later -->
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<!-- Copyright (C) 2022 Dhevan Gangadharan, Simon Gardner -->
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<!-- Copyright (C) 2022 Dhevan Gangadharan, Simon Gardner, Andrii Natochii -->
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<lccdd>
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</comment>
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<detectors>
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<comment> Electron side extended beam pipe volumes </comment>
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<!-- Beam pipe going from Q3eR to B7eR -->
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<detector

‎compact/far_backward/beamline_extension_hadron.xml‎

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<!-- SPDX-License-Identifier: LGPL-3.0-or-later -->
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<!-- Copyright (C) 2022 Simon Gardner, Dhevan Gangadharan -->
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<!-- Copyright (C) 2022 Simon Gardner, Dhevan Gangadharan, Andrii Natochii -->
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<detectors>
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<comment> Hadron side beam magnet volumes </comment>
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<detector name="Magnet_Q2PR" type="ip6_CylindricalDipoleMagnet" vis="RedVis">
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<placement x="(Q2PR_StartX+Q2PR_EndX)/2" y="0" z="(Q2PR_StartZ+Q2PR_EndZ)/2" theta="Q1BPR_Theta"/>
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<dimensions x="Q2PR_InnerRadius*4" y="Q2PR_InnerRadius*4" z="Q2PR_Length" r="2.0*Q2PR_InnerRadius"/>
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<apperture x="Q2PR_InnerRadius*2" y="Q2PR_InnerRadius*2" r="Q2PR_InnerRadius"/>
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<coil dx="2*cm" dy="1.5*cm" />
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</detector>
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<detector
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name="Magnets_Q3PR_to_B1PR"
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type="CylindricalMagnetChain"
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vis="FFMagnetVis">
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vis="MagnetVis">
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<magnet id="0" name="Magnet_Q3PR"
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x="(Q3PR_StartX+Q3PR_EndX)/2" y="0" z="(Q3PR_StartZ+Q3PR_EndZ)/2" theta="Q3PR_Theta"
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length="Q3PR_Length" rin="Q3PR_InnerRadius" rout="Q3PR_OuterRadius">
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</magnet>
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</detector>
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<comment> Hadron side beam pipe volumes </comment>
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<detector
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name="Pipe_Q1APR_to_B1PR"
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type="BeamPipeChain"
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wall_thickness="2*mm">
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<pipe id="0" name="Pipe_to_Q1APR"
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xcenter="(Hadron_Beampipe_End*sin(CrossingAngle) + Q1APR_StartX)/2." zcenter="(Hadron_Beampipe_End + Q1APR_StartZ)/2."
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length="(Hadron_Beampipe_End - Q1APR_StartZ)/cos(CrossingAngle)" theta="CrossingAngle"
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xcenter="(Hadron_Beampipe_End*sin(CrossingAngle)+Q1APR_StartX)/2." zcenter="(Hadron_Beampipe_End+Q1APR_StartZ)/2."
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length="(Hadron_Beampipe_End-Q1APR_StartZ)/cos(CrossingAngle)" theta="CrossingAngle"
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rout1="Hadron_Beampipe_Rad" rout2="Hadron_Beampipe_Rad">
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</pipe>
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<pipe id="1" name="Pipe_in_Q1APR"
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xcenter="(Q1APR_StartX + Q1APR_EndX)/2." zcenter="(Q1APR_StartZ + Q1APR_EndZ)/2."
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xcenter="(Q1APR_StartX+Q1APR_EndX)/2." zcenter="(Q1APR_StartZ+Q1APR_EndZ)/2."
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length="Q1APR_Length" theta="Q1APR_Theta"
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rout1="Q1APR_InnerRadius" rout2="Q1APR_InnerRadius">
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</pipe>
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<pipe id="2" name="Pipe_Q1APR_to_Q1BPR"/>
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<pipe id="3" name="Pipe_in_Q1BPR"
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xcenter="(Q1BPR_StartX + Q1BPR_EndX)/2." zcenter="(Q1BPR_StartZ + Q1BPR_EndZ)/2."
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xcenter="(Q1BPR_StartX+Q1BPR_EndX)/2." zcenter="(Q1BPR_StartZ+Q1BPR_EndZ)/2."
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length="Q1BPR_Length" theta="Q1BPR_Theta"
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rout1="Q1BPR_InnerRadius" rout2="Q1BPR_InnerRadius">
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</pipe>
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<pipe id="4" name="Pipe_Q1BPR_to_Q2PR"/>
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<pipe id="5" name="Pipe_in_Q2PR"
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xcenter="(Q2PR_StartX + Q2PR_EndX)/2." zcenter="(Q2PR_StartZ + Q2PR_EndZ)/2."
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xcenter="(Q2PR_StartX+Q2PR_EndX)/2." zcenter="(Q2PR_StartZ+Q2PR_EndZ)/2."
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length="Q2PR_Length" theta="Q2PR_Theta"
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rout1="Q2PR_InnerRadius" rout2="Q2PR_InnerRadius">
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</pipe>

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