Warning, /athena/compact/dirc.xml is written in an unsupported language. File is not indexed.
0001 <lccdd>
0002
0003 <comment>
0004 DIRC consists of 16 (default) identical modules making a barrel.
0005 Each DIRC module consists of:
0006 _______
0007 [ | \
0008 [ | \
0009 [FD|Prizm|Lens|--------bars+glue-----|mirror]
0010
0011 Main constants to control DIRC global geometry:
0012 - DIRC_length
0013 - DIRC_offset
0014 - DIRC_rmin
0015 - DIRCBox_count (16 full dirc, 1 - a single module)
0016 - DIRC_rotation (allows to flip the DIRC)
0017
0018 When DIRC_length is set, it affects bars length (all other lengths are fixed)
0019 The width of each DIRC module is derived from DIRCPrism_width
0020
0021 </comment>
0022
0023 <define>
0024 <constant name="DIRCFake_rmin" value="BarrelTracking_rmax-11*cm"/>
0025 <constant name="DIRC_rotation" value="pi" comment="Allows DIRC flip"/>
0026 <!-- <constant name="cb_DIRC_length" value="DIRCLength"/> -->
0027 <!-- CLEANUP THIS if not sure. This is from the initial implementation
0028 <constant name="DIRC_length" value="285.500*cm"/>
0029 <constant name="DIRCFake_rmin" value="82.00*cm"/>-->
0030
0031 <!-- Prism -->
0032 <constant name="DIRCPrism_width" value="360*mm"/>
0033 <constant name="DIRCPrism_length" value="300*mm"/>
0034 <constant name="DIRCPrism_short_edge" value="50*mm"/>
0035 <constant name="DIRCPrism_angle" value="32*deg"/>
0036 <constant name="DIRCPrism_long_edge" value="DIRCPrism_short_edge + DIRCPrism_length * tan(DIRCPrism_angle)"/>
0037 <constant name="DIRCPrism_height" value="DIRCPrism_long_edge"/>
0038
0039 <!-- DIRC length -->
0040 <constant name="DIRCMain_length" value="DIRC_length"/>
0041 <constant name="DIRCFake_offset" value="DIRC_offset+15*cm"/>
0042
0043 <!-- Box - main DIRC modules -->
0044 <constant name="DIRCBox_count" value="16" comment="Number of DIRC boxes per... DIRC. 16 - default"/>
0045 <constant name="DIRCBox_width" value="DIRCPrism_width"/>
0046
0047 <!-- Mirror -->
0048 <constant name="DIRCMirror_height" value="20 * mm"/>
0049 <constant name="DIRCMirror_width" value="DIRCPrism_width"/>
0050 <constant name="DIRCMirror_thickness" value="1 * mm"/>
0051
0052 <!-- Lens -->
0053 <constant name="DIRCLens_height" value="DIRCPrism_long_edge"/>
0054 <constant name="DIRCLens_width" value="DIRCPrism_width"/>
0055 <constant name="DIRCLens_thickness" value="12 * mm"/>
0056 <constant name="DIRCLens_r1" value="33 * mm"/>
0057 <constant name="DIRCLens_r2" value="24 * mm"/>
0058 <constant name="DIRCLens_shight" value="25 * mm" comment="Is 'shight' from UK urban dictionary???"/>
0059
0060 <!-- FD (Foto detectors?) -->
0061 <constant name="DIRCFd_height" value="DIRCPrism_height"/>
0062 <constant name="DIRCFd_width" value="DIRCPrism_width"/>
0063 <constant name="DIRCFd_thickness" value="1*mm"/>
0064
0065 <!-- Bar - Each DIRC box consists of N "bars" -->
0066 <!-- BarAssembly - Bars + Glue -->
0067 <constant name="DIRCBarAssm_length" value="DIRCMain_length - DIRCPrism_length - DIRCMirror_thickness - DIRCLens_thickness - DIRCFd_thickness" comment="Length of bars+glue assembly"/>
0068 <constant name="DIRCBar_count" value="11" comment="Number of bars per box"/>
0069 <constant name="DIRCBar_gap" value="0.15 * mm"/>
0070 <constant name="DIRCBar_height" value="17 * mm"/>
0071 <constant name="DIRCBar_width" value="(DIRCPrism_width - (DIRCBar_count - 1) * DIRCBar_gap) / DIRCBar_count"/>
0072 <constant name="DIRCGlue_thickness" value="0.05 * mm"/>
0073 <constant name="DIRCBar_length" value="(DIRCBarAssm_length-4*DIRCGlue_thickness)/4"/>
0074
0075 <!-- dirc outer volume -->
0076 <comment>
0077 RMax is calculated according to "rectangle inside ring" problem solution
0078 https://math.stackexchange.com/questions/4222684/calculate-rectangle-inside-ring-parameters/4222691#4222691
0079 </comment>
0080 <constant name="DIRCFake_rmax" value="sqrt( (DIRCFake_rmin+DIRCPrism_height)^2 + 0.25*(DIRCPrism_height)^2 )"/>
0081 </define>
0082
0083 <materials>
0084 <comment>
0085 Only non optical material variants are here.
0086 See optical_materials.xml for optical ones
0087 -
0088 </comment>
0089
0090 <material name="Epotek">
0091 <D type="density" value="1.2" unit="g/cm3"/>
0092 <composite n="5" ref="H"/>
0093 <composite n="3" ref="C"/>
0094 <composite n="2" ref="O"/>
0095 </material>
0096 <material name="Nlak33a">
0097 <D type="density" value="4.220" unit="g/cm3"/>
0098 <composite n="1" ref="Si"/>
0099 <composite n="2" ref="O"/>
0100 </material>
0101 </materials>
0102
0103 <limits>
0104 </limits>
0105
0106 <regions>
0107 </regions>
0108
0109 <display>
0110 <vis name="DIRCTube" ref="AnlTeal" alpha="0.1" visible="true" showDaughters="true" lineStyle="solid" drawingStyle="solid" />
0111 <vis name="DIRCBox" ref="AnlLight_Gray" alpha="0.1" visible="true" showDaughters="true" lineStyle="solid" drawingStyle="solid" />
0112 <vis name="DIRCLens1" ref="AnlProcess_Blue" visible="true" showDaughters="false" lineStyle="solid" drawingStyle="solid" />
0113 <vis name="DIRCLens2" ref="AnlProcess_Blue" visible="true" showDaughters="false" lineStyle="solid" drawingStyle="solid" />
0114 <vis name="DIRCLens3" ref="AnlTeal" visible="true" showDaughters="false" lineStyle="solid" drawingStyle="solid" />
0115 <vis name="DIRCBar" ref="AnlTeal" visible="true" showDaughters="false" lineStyle="solid" drawingStyle="solid" />
0116 <vis name="DIRCGlue" ref="AnlViolet" visible="true" showDaughters="false" lineStyle="solid" drawingStyle="solid" />
0117 <vis name="DIRCMirror" ref="AnlGray" visible="true" showDaughters="false" lineStyle="solid" drawingStyle="solid" />
0118 <vis name="DIRCPrism" ref="AnlTeal" visible="true" showDaughters="false" lineStyle="solid" drawingStyle="solid" />
0119 <vis name="DIRCFd" ref="AnlRed" visible="true" showDaughters="false" />
0120 </display>
0121
0122 <detectors>
0123 <detector id="BarrelDIRC_ID" name="cb_DIRC" type="cb_DIRC" readout="DIRCBarHits" vis="DIRCTube">
0124 <dimensions rmin="DIRCFake_rmin" rmax="DIRCFake_rmax" length="DIRCMain_length" radius="DIRCRadius" dx="DIRCBars_DX" dy="DIRCBars_DY" number="DIRCNum" deltaphi="DIRCDPhi"/>
0125 <position x="0" y="0" z="DIRCFake_offset"/>
0126 <rotation theta="DIRC_rotation"/>
0127 <module name="DircBox" R="DIRCRadius" repeat="DIRCBox_count" width="DIRCPrism_width + 1*mm" height="DIRCPrism_height*2" length="DIRCBarAssm_length + 550*mm" vis="DIRCBox">
0128 <!-- Mirror (at the end of the module) -->
0129 <mirror
0130 height="DIRCMirror_height"
0131 width="DIRCMirror_width"
0132 thickness="DIRCMirror_thickness"
0133 material="Aluminum"
0134 vis="DIRCMirror"
0135 />
0136
0137 <!-- DIRC Bar -->
0138 <!-- TODO parametrize as bar+glue assembly with layers -->
0139 <bar
0140 height="DIRCBar_height"
0141 width="DIRCBar_width"
0142 length="DIRCBar_length"
0143 repeat="DIRCBar_count"
0144 gap="DIRCBar_gap"
0145 material="Quartz"
0146 vis="DIRCBar"
0147 />
0148
0149 <glue thickness="DIRCGlue_thickness" material="Epotek" vis="DIRCGlue"/>
0150
0151 <!-- lens -->
0152 <lens
0153 height="DIRCLens_height"
0154 width="DIRCLens_width"
0155 thickness="DIRCLens_thickness"
0156 r1="DIRCLens_r1"
0157 r2="DIRCLens_r2"
0158 />
0159
0160 <prism/> <!-- TODO parametrize here -->
0161
0162 <fd
0163 height="DIRCFd_height"
0164 width="DIRCFd_width"
0165 thickness="DIRCFd_thickness"
0166 vis="DIRCFd"
0167 material="Quartz"
0168 />
0169 </module>
0170 </detector>
0171 </detectors>
0172
0173 <readouts>
0174 <readout name="DIRCBarHits">
0175 <segmentation type="CartesianGridXY" grid_size_x="3.0*mm" grid_size_y="3.0*mm" />
0176 <id>system:8,module:8,section:8,bar:8,x:32:-16,y:-16</id>
0177 </readout>
0178 </readouts>
0179
0180 <plugins>
0181 </plugins>
0182
0183 <fields>
0184 </fields>
0185 </lccdd>
