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Merge pull request #597 from sayak-alt/geometry_target_region
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Target chamber, target exit window and connecting pipe implementation
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@rakithab
rakithab authored Oct 18, 2023
2 parents 0f24e7f + 23be59d commit bbf9c59
Showing 1 changed file with 170 additions and 6 deletions.
176 changes: 170 additions & 6 deletions geometry/target/subTargetRegion.gdml
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@
<constant name="targetChamber_thickness" value="13."/>
<constant name="targetChamberLid_thickness" value="76."/>
<constant name="targetChamberHat_L" value="1000."/>
<constant name="TWOPI" value="2.*pi"/>


<!--constant for shieldings - dimension from Alan design -->
Expand Down Expand Up @@ -160,6 +161,56 @@
z="0.2"/>
</union>

<!--target chamber geometry-->
<tube name="Tube_target_chamber_1" rmin="1661.11/2.0" rmax="1750.01/2.0" z="2387.60" deltaphi="360" startphi="0" aunit="deg" lunit="mm"/>
<tube name="Tube_target_chamber_2" rmin="0.0" rmax="1750.01/2.0" z="73.66" deltaphi="360" startphi="0.0" aunit="deg" lunit="mm"/>
<polycone aunit="deg" startphi="0" deltaphi="360" lunit="mm" name="Tube_target_chamber_3">
<zplane rmin="0.0" rmax="200.02/2.0" z="0"/>
<zplane rmin="0.0" rmax="200.02/2.0" z="48.45"/>
<zplane rmin="0.0" rmax="266.7/2.0" z="48.45"/>
<zplane rmin="0.0" rmax="266.7/2.0" z="48.45+10.43"/>
</polycone>

<polycone aunit="deg" startphi="0" deltaphi="360" lunit="mm" name="Tube_target_chamber_4">
<zplane rmin="0.0" rmax="34.92/2.0" z="0"/>
<zplane rmin="0.0" rmax="34.92/2.0" z="23.47"/>
<zplane rmin="0.0" rmax="200.02/2.0" z="23.47"/>
<zplane rmin="0.0" rmax="200.02/2.0" z="23.47+39.06"/>
</polycone>

<subtraction name="target_exit_window_subtraction">
<first ref="Tube_target_chamber_1"/>
<second ref="Tube_target_chamber_3"/>
<rotation name="rot_1" unit="deg" x="90" y="0" z="0"/>
<position name="pos_targ_exit_1" unit="mm" x="0.0" y="-(1750.01/2.0-48.45-10.43+1.935)" z="0.0"/>
</subtraction>
<!--Beam entrance hole in the target chamber -->
<subtraction name="target_entry_window_subtraction">
<first ref="target_exit_window_subtraction"/>
<second ref="Tube_target_chamber_4"/>
<rotation name="rot_1" unit="deg" x="90" y="0" z="0"/>
<position name="pos_targ_exit_1" unit="mm" x="0.0" y="(1750.01/2.0)" z="0.0"/>
</subtraction>

<!--target exit window-->
<tube name="Target_exit_window_Tube_1" rmin="0.0" rmax="15.0114/2.0" z="0.2032" deltaphi="360" startphi="0" aunit="deg" lunit="mm"/>
<tube name="Target_exit_window_Tube_2" rmin="15.0114/2.0" rmax="253.238/2.0" z="0.635" deltaphi="360" startphi="0" aunit="deg" lunit="mm"/>
<tube name="Target_exit_window_Tube_3" rmin="76.2/2.0" rmax="253.238/2.0" z="6.35" deltaphi="360" startphi="0" aunit="deg" lunit="mm"/>
<tube name="Target_exit_window_Tube_4" rmin="101.6/2.0" rmax="253.238/2.0" z="12.7" deltaphi="360" startphi="0" aunit="deg" lunit="mm"/>
<tube name="Target_exit_window_Tube_5" rmin="217.17/2.0" rmax="253.238/2.0" z="1.524" deltaphi="360" startphi="0" aunit="deg" lunit="mm"/>
<tube name="Target_exit_window_Tube_6" rmin="101.6/2.0" rmax="253.238/2.0" z="10.4" deltaphi="360" startphi="0" aunit="deg" lunit="mm"/>

<!-- pipe from target exit window to bellow1 -->
<polycone aunit="deg" startphi="0" deltaphi="360" lunit="mm" name="connecting_pipe_1">
<zplane rmin="196.85/2.0" rmax="203.20/2.0" z="0"/>
<zplane rmin="196.85/2.0" rmax="203.20/2.0" z="0-134.42"/>
</polycone>
<polycone aunit="deg" startphi="0" deltaphi="360" lunit="mm" name="flange_1">
<zplane rmin="190.50/2.0" rmax="368.30/2.0" z="0"/>
<zplane rmin="190.50/2.0" rmax="368.30/2.0" z="0-28.45"/>
</polycone>


<!-- Target upstream beampipe -->
<polycone name="targetUSBeamPipeOuter_solid"
aunit="deg" startphi="0" deltaphi="360"
Expand Down Expand Up @@ -280,17 +331,75 @@
<auxiliary auxtype="DetType" auxvalue="secondaries"/>
<auxiliary auxtype="DetType" auxvalue="lowenergyneutral"/>
</volume>


<!-- target chamber-->
<volume name="target_chamber_vol1">
<materialref ref="G4_Al"/>
<solidref ref="Tube_target_chamber_1"/>
</volume>
<volume name="target_chamber_vol2">
<materialref ref="G4_Al"/>
<solidref ref="Tube_target_chamber_2"/>
</volume>
<volume name="target_chamber_vol3">
<materialref ref="G4_Al"/>
<solidref ref="target_entry_window_subtraction"/>
</volume>
<volume name="target_chamber_vol5">
<materialref ref="G4_Al"/>
<solidref ref="Tube_target_chamber_3"/>
</volume>

<!-- target exit window -->
<volume name="TubeVol1">
<materialref ref="G4_Be"/>
<solidref ref="Target_exit_window_Tube_1"/>
<auxiliary auxtype="Color" auxvalue="blue"/>
</volume>
<volume name="TubeVol2">
<materialref ref="G4_Al"/>
<solidref ref="Target_exit_window_Tube_2"/>
<auxiliary auxtype="Color" auxvalue="cyan"/>
</volume>
<volume name="TubeVol3">
<materialref ref="G4_Al"/>
<solidref ref="Target_exit_window_Tube_3"/>
<auxiliary auxtype="Color" auxvalue="cyan"/>
</volume>
<volume name="TubeVol4">
<materialref ref="G4_Al"/>
<solidref ref="Target_exit_window_Tube_4"/>
<auxiliary auxtype="Color" auxvalue="cyan"/>
</volume>
<volume name="TubeVol5">
<materialref ref="G4_Al"/>
<solidref ref="Target_exit_window_Tube_5"/>
<auxiliary auxtype="Color" auxvalue="cyan"/>
</volume>
<volume name="TubeVol6">
<materialref ref="G4_Al"/>
<solidref ref="Target_exit_window_Tube_6"/>
<auxiliary auxtype="Color" auxvalue="cyan"/>
</volume>


<!-- pipe from target exit window to bellow1 -->
<volume name="connecting_pipe_volume_1">
<materialref ref="G4_Al"/>
<solidref ref="connecting_pipe_1"/>
<auxiliary auxtype="Color" auxvalue="blue"/>
</volume>
<volume name="flange_vol_1">
<materialref ref="G4_Al"/>
<solidref ref="flange_1"/>
<auxiliary auxtype="Color" auxvalue="blue"/>
</volume>

<volume name="targetRegion">
<materialref ref="VacuumTarg"/>
<solidref ref="targetRegion_solid"/>
<auxiliary auxtype="Alpha" auxvalue="0.1"/>

<physvol>
<volumeref ref="TargWindow_logic"/>
<position name="targ_vac_window" unit="mm" x="0" y="0" z="1500"/>
</physvol>

<physvol name="targetLadder">
<file name="target/targetLadder.gdml"/>
</physvol>
Expand Down Expand Up @@ -359,6 +468,61 @@
<volumeref ref="tgt2US_pipe2_DSflange_logic"/>
</physvol>


<!-- target chamber placement-->
<physvol>
<volumeref ref="target_chamber_vol2"/>
<position name="pos7" unit="mm" x="0.0" y="(2387.60/2.0+73.66/2)" z="0.0"/>
<rotation name="rot1" unit="deg" x="90" y="0" z="0"/>
</physvol>
<physvol>
<volumeref ref="target_chamber_vol2"/>
<position name="pos8" unit="mm" x="0.0" y="(-2387.60/2.0-73.66/2)" z="0.0"/>
<rotation name="rot2" unit="deg" x="90" y="0" z="0"/>
</physvol>
<physvol>
<volumeref ref="target_chamber_vol3"/>
<position name="pos9" unit="mm" x="0.0" y="0.0" z="0.0"/>
<rotation name="rot3" unit="deg" x="90" y="0" z="0"/>
</physvol>

<!-- target exit window placement-->
<physvol>
<volumeref ref="TubeVol6"/>
<position name="pos6_a" unit="mm" x="0.0" y="0.0" z="877.01-0.2032/2.0-10.4/2.0"/>
</physvol>
<physvol>
<volumeref ref="TubeVol1"/>
<position name="pos1" unit="mm" x="0.0" y="0.0" z="877.01-0.2032/2.0"/>
</physvol>
<physvol>
<volumeref ref="TubeVol2"/>
<position name="pos2" unit="mm" x="0.0" y="0.0" z="877.01+0.635/2.0"/>
</physvol>
<physvol>
<volumeref ref="TubeVol3"/>
<position name="pos3" unit="mm" x="0.0" y="0.0" z="877.01+0.635+6.35/2.0"/>
</physvol>
<physvol>
<volumeref ref="TubeVol4"/>
<position name="pos4" unit="mm" x="0.0" y="0.0" z="877.01+0.635+6.35+12.7/2.0"/>
</physvol>
<physvol>
<volumeref ref="TubeVol5"/>
<position name="pos5" unit="mm" x="0.0" y="0.0" z="877.01+0.635+6.35+12.7+1.524/2.0"/>
</physvol>

<!-- target exit window to beam pipe connection placement-->
<physvol>
<volumeref ref="connecting_pipe_volume_1"/>
<position name="pipe_pos_1" unit="mm" x="0.0" y="0.0" z="877.01+0.635+6.35+12.7+1.524+134.42"/>
</physvol>

<physvol>
<volumeref ref="flange_vol_1"/>
<position name="flange_pos_1" unit="mm" x="0.0" y="0.0" z="877.01+0.635+6.35+12.7+1.524+134.42+28.45"/>
</physvol>

</volume>

</structure>
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