#meta full request: /GEOMETRY/PairSpect_HDDS.xml:1:mc_JEF:2021-01-11_20-52-12
#meta variation: mc_JEF
#meta created: 2021-01-11 20:52:12
#meta run range: 1 - 99999
#meta author: ijaegle

#

#& xml
<?xml version="1.0" encoding="UTF-8"?>
<!--DOCTYPE HDDS>

  Hall D Geometry Data Base: Pair Spectrometer
  ********************************************

     version 1.0: Initial version
     version 2.0: Substantial changes by S. Taylor
     version 3.0: A.S. 
        - correct size of the PS/PSC counters. 	
        - rotate counters
	- correct positions and counter numbering
        - shift PS magnet (according to the alignment chart)
	- version 3.1: small tweaks to eliminate overlaps between volumes. [rtj]
        

<HDDS specification="v1.0" xmlns="http://www.gluex.org/hdds">
-->

<section name        = "PairSpectrometer"
         version     = "3.1"
         date        = "2014-09-09"
         author      = "A.Somov"
         top_volume  = "HALL"
         specification = "v1.0">


<!-- Origin of PairSpectrometer is center of the hall.
     The pair spectrometer is situated in the detector hall 
     after the collimator cave. The pair spectrometer converter
     is defined in the BeamLine_HDDS.xml file, in the volume CONV.
-->


  <composition name="PairSpectrometer">
    <posXYZ volume="PairMagnet"    X_Y_Z="0.0   0.0   -246.8745" />
    <posXYZ volume="PairVacChamb"  X_Y_Z="0.0   0.0   -114.6007" />
    <posXYZ volume="PairHodoscopeNorth" X_Y_Z="+36.3201   0.0   44.4012"  rot="0.0  4.57077 0.0"/>
    <posXYZ volume="PairHodoscopeSouth" X_Y_Z="-36.3271   0.0   44.3715"  rot="0.0 -4.65958 0.0"/>  
    <posXYZ volume="PairCoarseNorth" X_Y_Z="+43.5331 0.0 94.4875" rot="0.0  4.6742 0.0" /> 
    <posXYZ volume="PairCoarseSouth" X_Y_Z="-43.5345 0.0 94.4855" rot="0.0 -4.7067  0.0" />
    <posXYZ volume="PairPipe2"     X_Y_Z="0.0   0.0   31.8602"/> 
    <posXYZ volume="PairShielding" X_Y_Z="0.0   0.0  132.6500" />
    <!--The following models the SEG blocks and additional lead shielding-->
    <posXYZ volume="SEG1" X_Y_Z="-87.63 0.0 128.82"/>
    <posXYZ volume="SEG1" X_Y_Z="+87.63 0.0 128.82"/>
    <posXYZ volume="SEG2" X_Y_Z="-153.6 0.0 95.74"/> 
    <posXYZ volume="SEG2" X_Y_Z="+153.6 0.0 95.74"/>
    <posXYZ volume="PSH1" X_Y_Z="-32.4 0.0 109.78"/> 
    <posXYZ volume="PSH1" X_Y_Z="+32.4 0.0 109.78"/>
    <posXYZ volume="PSH2" X_Y_Z="0.0 19.05 132.65"/>  
    <posXYZ volume="PSH2" X_Y_Z="0.0 -19.05 132.65"/>
  </composition>
	

<!-- Vacuum Pipe 1 -->

  <composition name="PairPipe1" envelope="HPO1" >
    <posXYZ volume="HPI1" X_Y_Z="0.0 0.0 0.0"/> 
  </composition>

  
  <tubs name="HPO1" Rio_Z="0.0  1.905  6.096" material="Iron" /> 
  <tubs name="HPI1" Rio_Z="0.0  1.74  6.096" material="Vacuum" /> 


<!-- Pair Spectrometer Magnet -->

  <composition name="PairMagnet">
    <posXYZ volume="EffectRegion" X_Y_Z="0.0 0.0  0.0"/> 
  </composition>

  <composition name="EffectRegion" envelope="MAG3">
    <posXYZ volume="PairPipe1"     X_Y_Z="0.0   0.0  -63.373"/>
    <posXYZ volume="POL3" X_Y_Z="0.0 +29.591  1.0" />
    <posXYZ volume="POL3" X_Y_Z="0.0 -29.591  1.0" />
    <posXYZ volume="GAP3" X_Y_Z="+75.2475 0.0 1.0" />
    <posXYZ volume="GAP3" X_Y_Z="-75.2475 0.0 1.0" />
    <posXYZ volume="PairUpstrVacFlange1" X_Y_Z="0. 0. -59.69"/>
    <posXYZ volume="PairUpstreamVacChamb" X_Y_Z="0 0 2.794" />
    <posXYZ volume="PairUpstrVacFlange2" X_Y_Z="0. 0. 65.532"/>
  </composition>

  <box name="MAG3" X_Y_Z="209.55  110.744 132.842" material="Air" >
    <apply region="PairBfield" /> 
  </box> 
  <box name="POL3" X_Y_Z="209.55  51.562  91.44" material="Iron" />
  <box name="GAP3" X_Y_Z="59.055   7.62   91.44" material="Iron" />

  <composition name="PairUpstrVacFlange1" envelope="PFO1">
    <posXYZ volume="PFI1"/>
  </composition>

  <box name="PFO1" X_Y_Z="10.16 6.6548 1.27" material="Iron"/>
  <tubs name="PFI1" Rio_Z="0.0 1.74625 1.27" material="Vacuum"/>

  <composition name="PairUpstrVacFlange2" envelope="PFO2">
    <posXYZ volume="PFI2"/>
  </composition>

  <box name="PFO2" X_Y_Z="52.832 13.97 1.778" material="Iron"/>
  <box name="PFI2" X_Y_Z="44.036 5.08  1.778" material="Vacuum"/>

  <composition name="PairUpstreamVacChamb" envelope="PCO2">
    <posXYZ volume="PCI2"/>
  </composition>
  
  <trd name="PCO2" Xmp_Ymp_Z="10.137 45.545 6.6548 6.6548 123.698" material="Iron"/>
  <trd name="PCI2" Xmp_Ymp_Z="8.509 43.917 5.08 5.08 123.698" material="Vacuum"/>

  <trd name="PCO1" Xmp_Ymp_Z="45.545 113.134 6.6548 6.6548 128.143" material="Iron"/>
  <trd name="PCI1" Xmp_Ymp_Z="43.917 111.506  5.08 5.08 128.143" material="Vacuum"/>

<!-- Pair Spectrometer Vacuum Chamber -->

  <composition name="PairVacChamb">
    <posXYZ volume="VacFlange3" X_Y_Z="0.0 0.0 -64.9605" />
    <posXYZ volume="VacTRD" X_Y_Z="0.0 0.0 0.0" />
    <posXYZ volume="VacSidePlane" X_Y_Z="0.0 0.0 65.044" /> 
    <posXYZ volume="VacSideClamp" X_Y_Z="30.83 0.0 66.6315"/>
    <posXYZ volume="VacSideClamp" X_Y_Z="-30.83 0.0 66.6315"/>
  </composition>

  <composition name="VacSideClamp" envelope="PWCO">
    <posXYZ volume="PWCI"/>
  </composition>
  
  <box name="PWCO" X_Y_Z="57.4218 13.2842 1.27" material="Iron"/>
  <box name="PWCI" X_Y_Z="49.8475 5.08 1.27" material="Air"/>

  <composition name="VacTRD" envelope="PCO1">
    <posXYZ volume="PCI1" X_Y_Z="0.0 0.0 0.0" />
  </composition>

  <composition name="VacFlange3" envelope="PFO3">
    <posXYZ volume="PFI3"/>
  </composition>

  <box name="PFO3" X_Y_Z="52.8066 13.97 1.778" material="Iron"/>
  <box name="PFI3" X_Y_Z="43.9166 5.08  1.778" material="Vacuum"/>


  <composition name="VacSidePlane" envelope="VSPL">
    <posXYZ volume="VHB1" X_Y_Z="+30.83  0.0 -0.0125" />
    <posXYZ volume="VBW1" X_Y_Z="+30.83  0.0  0.9375" />
    <posXYZ volume="VHB1" X_Y_Z="-30.83  0.0 -0.0125" />
    <posXYZ volume="VBW1" X_Y_Z="-30.83  0.0  0.9375" />
    <posXYZ volume="VVPH" X_Y_Z=" +0.0 0.0  0.0" />
  </composition>

  <box name="VSPL" X_Y_Z="119.964 13.284 1.900" material="Iron" />
  <box name="VHB1" X_Y_Z="49.8475 5.08  1.875" material="Vacuum" />
  <box name="VBW1" X_Y_Z="49.8475 5.08  0.025" material="Kapton" />
  <tubs name="VVPH" Rio_Z="0.0 1.74625 1.900" material="Vacuum"/>

<!-- Hodoscope Counters -->

  <composition name="PairHodoscopeNorth" envelope="PSFN">
    <mposX volume="PSF1" Y_Z="0.0 0.0" ncopy="40" X0="-12.45" dX="0.1">
      <column value="145" step="-1"/>
    </mposX>
    <mposX volume="PSF2" Y_Z="0.0 0.0" ncopy="105" X0="-8.4" dX="0.2">
      <column value="105" step="-1"/>
    </mposX>
  </composition>

  <composition name="PairHodoscopeSouth" envelope="PSFS">
    <mposX volume="PSF2" Y_Z="0.0 0.0" ncopy="105" X0="-12.4" dX="0.2">
      <column value="146" step="1"/>
    </mposX>
    <mposX volume="PSF1" Y_Z="0.0 0.0" ncopy="40" X0="8.55" dX="0.1">
      <column value="251" step="1"/>
    </mposX>
  </composition>

  <box name="PSF1" X_Y_Z="0.1 3.0 1.0" material="Scintillator" sensitive="true"/>
  <box name="PSF2" X_Y_Z="0.2 3.0 1.0" material="Scintillator" sensitive="true"/>
  <box name="PSFN" X_Y_Z="25.0 3.0 1.0" material="Air" comment="Mother volume for pair spectrometer fine counters" />
  <box name="PSFS" X_Y_Z="25.0 3.0 1.0" material="Air" comment="Mother volume for pair spectrometer fine counters" />



  <composition name="PairCoarseNorth" envelope="PSCN">
    <mposX volume="PSCO" Y_Z="0.0  1.1" ncopy="4" X0="-9.8243" dX="7.85942">
      <module value="2" step="2"/>
    </mposX>
    <mposX volume="PSCO" Y_Z="0.0 -1.1" ncopy="4" X0="-13.754" dX="7.85942">
      <module value="1" step="2"/>
    </mposX>
  </composition>

  <composition name="PairCoarseSouth" envelope="PSCS">
    <mposX volume="PSCO" Y_Z="0.0 1.1" ncopy="4" X0="-13.754" dX="7.85942">
      <module value="16" step="-2"/>
    </mposX>
    <mposX volume="PSCO" Y_Z="0.0 -1.1" ncopy="4" X0="-9.8243" dX="7.85942">
      <module value="15" step="-2"/>
    </mposX>
  </composition>
  
  
  <box name="PSCO" X_Y_Z="4.4 6.0 2." material="Scintillator" sensitive="true"/>     
  <box name="PSCN" X_Y_Z="33.0 6.2 5." material="Air" comment="Mother volume for pair spectrometer coarse counters"/>
  <box name="PSCS" X_Y_Z="33.0 6.2 5." material="Air" comment="Mother volume for pair spectrometer coarse counters"/>	
  

<!-- Vacuum Pipe 2 -->

  <composition name="PairPipe2" envelope="HPO2" >
    <posXYZ volume="HPI2" X_Y_Z="0.0 0.0 0.0"/> 
  </composition>

  <tubs name="HPO2" Rio_Z="0.0  1.905    160.9338 " material="Iron" /> 
  <tubs name="HPI2" Rio_Z="0.0  1.74625  160.9338 " material="Vacuum"/>
  
  
<!--Pair Lead Shielding -->

  <composition name="PairShielding" envelope="PSHL">
    <posXYZ volume="PairShieldHole" X_Y_Z="0.0 0.0 0.0"/>
  </composition>

  <composition name="PairShieldHole" envelope="OPSH">
    <posXYZ volume="IPSH" X_Y_Z="0.0 0.0 0.0"/>
  </composition>

  <box  name="PSHL" X_Y_Z="10.16 10.16 40.64" material="Lead" />
  <box name="PSH2" X_Y_Z="10.16 27.94 40.64" material="Lead"/>
  <tubs name="OPSH" Rio_Z="0.0  4.445 40.64" material="Iron"/> 
  <tubs name="IPSH" Rio_Z="0.0 1.7399 40.64" material="Vacuum"/> 
  <box name="PSH1" X_Y_Z="60.96 20.32 5.08" material="Lead"/>

<!-- Pair spectrometer shielding SEG blocks. The properties of material of the SEG 
                       block are very close to Iron.
-->
<box name="SEG1" X_Y_Z="165.1 66.0 33.0" material="Iron"/>
<box name="SEG2" X_Y_Z="33.0 66.0 33.0" material="Iron"/>

</section>

<!-- </HDDS> -->