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0001 <define>
0002 <constant name="world_side" value="30*m"/>
0003 <constant name="world_x" value="world_side"/>
0004 <constant name="world_y" value="world_side"/>
0005 <constant name="world_z" value="100*m"/>
0006
0007 <constant name="Pi" value="3.14159265359"/>
0008 <constant name="mil" value="0.0254*mm"/>
0009 <constant name="inch" value="2.54*cm"/>
0010
0011 <documentation>
0012 ## Detector IDs
0013
0014 ### Note about ACTS tracking geometry construction
0015
0016 The tracking surfaces need to be structured in a barrel + endcapP + endcapN where
0017 endcapP/endcapN are the endcaps at positive/negative z values.
0018 See https://acts.readthedocs.io/en/latest/plugins/dd4hep.html for more details.
0019
0020 The tracking geometry needs to be constructed from cylinders from the inside out. For this reason
0021 each layer needs its own subsystem assembly. This increases the number of top level system IDs.
0022 For example the silicon tracker needs 3 IDs for each area (endcap+barrel+endcap) and a subassembly for each
0023 layer. Therefore it needs a minimum of 20 IDs. Therefore we will allocate blocks of ~25 for each major subsystem.
0024 Note, future improvements will likely include a more sophisticated ACTS-dd4hep plugin,
0025 eliminating the need for so many system IDs at construction time.
0026
0027 This barrel/endcap structure needs IDs to be in increasing order going outward.
0028 The space of IDs for the subassemblies starts at (Subassembly_ID*10+101).
0029
0030 The unused IDs below are saved for future use.
0031 </documentation>
0032
0033
0034 <documentation>
0035
0036 ### Allocated IDs
0037
0038 #### (1-9) Reserved IDs
0039
0040 - Unused IDs: 1-9
0041
0042 #### (10-24) Interaction region beamline
0043
0044 - Beampipe ID : 10
0045 - Unused IDs: 11-24
0046
0047 </documentation>
0048 <constant name="BeamPipe_ID" value="10"/>
0049 <constant name="BeamPipeB0_ID" value="11"/>
0050
0051
0052 <documentation>
0053 #### (25-39) Silicon Vertex Tracker
0054
0055 - Vertex subassemblies: 25-27
0056 - Vertex barrel and endcaps: 28-30
0057 - Unused: 28-30
0058 </documentation>
0059 <constant name="VertexSubAssembly_0_ID" value="25"/>
0060 <constant name="VertexSubAssembly_1_ID" value="26"/>
0061 <constant name="VertexSubAssembly_2_ID" value="27"/>
0062
0063 <constant name="VertexBarrel_0_ID" value="31"/>
0064 <constant name="VertexBarrel_1_ID" value="32"/>
0065 <constant name="VertexBarrel_2_ID" value="33"/>
0066 <constant name="VertexEndcapN_0_ID" value="34"/>
0067 <constant name="VertexEndcapN_1_ID" value="35"/>
0068 <constant name="VertexEndcapN_2_ID" value="36"/>
0069 <constant name="VertexEndcapP_0_ID" value="37"/>
0070 <constant name="VertexEndcapP_1_ID" value="38"/>
0071 <constant name="VertexEndcapP_2_ID" value="39"/>
0072
0073 <documentation>
0074 - Unused IDs: 31-39
0075 </documentation>
0076
0077 <documentation>
0078 #### (40-84) Tracker System
0079
0080 - Tracker subassemblies: 40-45
0081 - Composite tracker systems: 46-57
0082 - Tracker detectors: 56-84
0083 Unused IDs: (77-79)
0084
0085 </documentation>
0086
0087 <comment>
0088 SubAssembly IDs should increment from inner to outer
0089 (it's not the definition order but rather the ID order that's used
0090 for construction order in the ACTS geometry conversion)
0091 </comment>
0092 <constant name="TrackerSubAssembly_0_ID" value="40"/>
0093 <constant name="TrackerSubAssembly_1_ID" value="41"/>
0094 <constant name="TrackerSubAssembly_2_ID" value="42"/>
0095 <constant name="TrackerSubAssembly_3_ID" value="43"/>
0096 <constant name="TrackerSubAssembly_4_ID" value="44"/>
0097 <constant name="TrackerSubAssembly_5_ID" value="45"/>
0098
0099 <constant name="TrackerCompositeBarrel_0_ID" value="46"/>
0100 <constant name="TrackerCompositeBarrel_1_ID" value="47"/>
0101 <constant name="TrackerCompositeBarrel_2_ID" value="48"/>
0102 <constant name="TrackerCompositeBarrel_3_ID" value="49"/>
0103 <constant name="TrackerCompositeEndcapN_0_ID" value="50"/>
0104 <constant name="TrackerCompositeEndcapN_1_ID" value="51"/>
0105 <constant name="TrackerCompositeEndcapN_2_ID" value="52"/>
0106 <constant name="TrackerCompositeEndcapN_3_ID" value="53"/>
0107 <constant name="TrackerCompositeEndcapP_0_ID" value="54"/>
0108 <constant name="TrackerCompositeEndcapP_1_ID" value="55"/>
0109 <constant name="TrackerCompositeEndcapP_2_ID" value="56"/>
0110 <constant name="TrackerCompositeEndcapP_3_ID" value="57"/>
0111
0112 <constant name="TrackerBarrel_0_ID" value="58"/>
0113 <constant name="TrackerBarrel_1_ID" value="59"/>
0114 <constant name="TrackerBarrel_2_ID" value="60"/>
0115 <constant name="TrackerBarrel_3_ID" value="61"/>
0116 <constant name="TrackerBarrel_4_ID" value="62"/>
0117 <constant name="TrackerBarrel_5_ID" value="63"/>
0118 <constant name="TrackerBarrel_6_ID" value="64"/>
0119 <constant name="TrackerBarrel_7_ID" value="65"/>
0120 <constant name="TrackerBarrel_8_ID" value="66"/>
0121 <constant name="TrackerEndcapN_0_ID" value="67"/>
0122 <constant name="TrackerEndcapN_1_ID" value="68"/>
0123 <constant name="TrackerEndcapN_2_ID" value="69"/>
0124 <constant name="TrackerEndcapN_3_ID" value="70"/>
0125 <constant name="TrackerEndcapN_4_ID" value="71"/>
0126 <constant name="TrackerEndcapN_5_ID" value="72"/>
0127 <constant name="TrackerEndcapN_6_ID" value="73"/>
0128 <constant name="TrackerEndcapN_7_ID" value="74"/>
0129 <constant name="TrackerEndcapN_8_ID" value="75"/>
0130 <constant name="TrackerEndcapP_0_ID" value="76"/>
0131 <constant name="TrackerEndcapP_1_ID" value="77"/>
0132 <constant name="TrackerEndcapP_2_ID" value="78"/>
0133 <constant name="TrackerEndcapP_3_ID" value="79"/>
0134 <constant name="TrackerEndcapP_4_ID" value="80"/>
0135 <constant name="TrackerEndcapP_5_ID" value="81"/>
0136 <constant name="TrackerEndcapP_6_ID" value="82"/>
0137 <constant name="TrackerEndcapP_7_ID" value="83"/>
0138 <constant name="TrackerEndcapP_8_ID" value="84"/>
0139
0140 <documentation>
0141 #### (85-99) Reserved IDs
0142
0143 - Unused IDs: 85-89
0144 TBD
0145 </documentation>
0146 <documentation>
0147 #### (90-99) Barrel PID IDs
0148
0149 - DIRC subsystem ID: 90
0150 - Barrel TRD subsystem ID: 91
0151 - Barrel TOF subsystem ID: 92
0152 - Unused IDs: 93-99
0153 </documentation>
0154 <constant name="BarrelDIRC_ID" value="90"/>
0155 <constant name="BarrelTRD_ID" value="91"/>
0156 <constant name="BarrelTOF_ID" value="92"/>
0157 <constant name="TOFSubAssembly_ID" value="93"/>
0158
0159 <documentation>
0160 #### (100-109) Electromagnetic Calorimeter
0161
0162 ECal subsystem ID: 100
0163 Barrel subassembly ID: 101
0164 EndcapP subassembly ID: 102
0165 EndcapN subassembly ID: 103
0166 Crystal subassembly ID: 104
0167 Barrel2 subassembly ID: 105
0168
0169 Unused IDs: 106-109
0170
0171 </documentation>
0172 <constant name="ECalSubAssembly_ID" value="100"/>
0173 <constant name="ECalBarrel_ID" value="101"/>
0174 <constant name="ECalEndcapP_ID" value="102"/>
0175 <constant name="ECalEndcapN_ID" value="103"/>
0176 <constant name="CrystalEndcap_ID" value="104"/>
0177 <constant name="ECalBarrel2_ID" value="105"/>
0178
0179 <documentation>
0180 #### (110-119) Hadronic Calorimeter
0181
0182 - HCal subsystem ID: 110
0183 - Barrel subassembly ID: 111
0184 - EndcapP subassembly ID: 112
0185 - EndcapN subassembly ID: 113
0186
0187 - Unused IDs: 115-119
0188 </documentation>
0189 <constant name="HCalSubAssembly_ID" value="110"/>
0190 <constant name="HCalBarrel_ID" value="111"/>
0191 <constant name="HCalEndcapP_ID" value="112"/>
0192 <constant name="HCalEndcapN_ID" value="113"/>
0193 <constant name="PassiveSteelRingEndcapP_ID" value="114"/>
0194 <documentation>
0195 #### (120-129) (near) Forward reserved
0196
0197 - Forward RICH ID: 120
0198 - Forward TRD ID: 121
0199 - Forward TOF ID: 122
0200 - Unused IDs: 124-129
0201 </documentation>
0202 <constant name="ForwardRICH_ID" value="120"/>
0203 <constant name="ForwardTRD_ID" value="121"/>
0204 <constant name="ForwardTOF_ID" value="122"/>
0205
0206 <documentation>
0207 #### (130-139) Backward reserved
0208
0209 - Modular RICH ID: 130
0210 - Backward RICH ID: 131
0211 - Backward TOD ID: 132
0212 - Unused IDs: 133-139
0213
0214 </documentation>
0215 <constant name="MRICH_ID" value="130"/>
0216 <constant name="BackwardRICH_ID" value="131"/>
0217 <constant name="BackwardTOF_ID" value="132"/>
0218
0219 <documentation>
0220 #### (140-149) Central Magnet
0221
0222 - Solenoid ID: 140
0223 - Solenoid support ID: 141
0224 - Solenoid Yoke ID: 142
0225
0226 - Unused IDs: 143-149
0227
0228 </documentation>
0229 <constant name="Solenoid_ID" value="140"/>
0230 <constant name="SolenoidSupport_ID" value="141"/>
0231 <constant name="SolenoidYoke_ID" value="142"/>
0232
0233 <documentation>
0234 #### (150-169) Far Forward Detectors
0235
0236 - Forward Roman Pot ID: 150
0237 - Forward B0 Tracker ID: 151
0238 - Zero Degree Cal. Ecal ID: 160
0239 - Zero Degree Cal. Hcal ID: 161
0240
0241 TODO: A lot of the repeated ID's below should be pushed into a single detector
0242 </documentation>
0243 <constant name="B0Tracker_Station_1_ID" value="150"/>
0244 <constant name="B0Tracker_Station_2_ID" value="151"/>
0245 <constant name="B0Tracker_Station_3_ID" value="152"/>
0246 <constant name="B0Tracker_Station_4_ID" value="153"/>
0247 <constant name="B0Preshower_Station_1_ID" value="154"/>
0248 <constant name="ForwardRomanPot_Station_1_ID" value="155"/>
0249 <constant name="ForwardRomanPot_Station_2_ID" value="156"/>
0250 <constant name="ForwardOffMTracker_station_1_ID" value="159"/>
0251 <constant name="ForwardOffMTracker_station_2_ID" value="160"/>
0252 <constant name="ForwardOffMTracker_station_3_ID" value="161"/>
0253 <constant name="ForwardOffMTracker_station_4_ID" value="162"/>
0254 <constant name="ZDCEcal_ID" value="163"/>
0255 <constant name="ZDCHcal_ID" value="164"/>
0256 <constant name="VacuumMagnetElement_1_ID" value="165"/>
0257
0258 <documentation>
0259 #### (170-189) Far Forward Beamline Magnets
0260 </documentation>
0261 <constant name="B0PF_ID" value="170"/>
0262 <constant name="B0APF_ID" value="171"/>
0263 <constant name="Q1APF_ID" value="172"/>
0264 <constant name="Q1BPF_ID" value="173"/>
0265 <constant name="Q2PF_ID" value="174"/>
0266 <constant name="B1PF_ID" value="175"/>
0267 <constant name="B1APF_ID" value="176"/>
0268 <constant name="B2PF_ID" value="177"/>
0269 <constant name="Q0EF_ID" value="180"/>
0270 <constant name="Q1EF_ID" value="181"/>
0271
0272 <documentation>
0273 #### (190-199) Far Backward Beamline Magnets
0274
0275 - Low-Q2 Tagger 1 Tracker ID: 195
0276 - Low-Q2 Tagger 1 Calorimeter ID: 196
0277 - Low-Q2 Tagger 2 Tracker ID: 198
0278 - Low-Q2 Tagger 2 Calorimeter ID: 199
0279
0280 TODO: A lot of the repeated ID's below should be pushed into a single detector
0281 </documentation>
0282 <constant name="LumiCollimator_ID" value="190"/>
0283 <constant name="LumiDipole_ID" value="191"/>
0284 <constant name="TaggerTracker_1_ID" value="195"/>
0285 <constant name="TaggerCalorimeter_1_ID" value="196"/>
0286 <constant name="TaggerTracker_2_ID" value="198"/>
0287 <constant name="TaggerCalorimeter_2_ID" value="199"/>
0288
0289 <documentation>
0290 #### (200-219) Far Backward Beamline Magnets
0291 </documentation>
0292 <constant name="Pipe_to_Q1eR_ID" value="200"/>
0293 <constant name="Magnet_Q1eR_ID" value="201"/>
0294 <constant name="Pipe_in_Q1eR_ID" value="202"/>
0295 <constant name="Pipe_Q1eR_to_Q2eR_ID" value="203"/>
0296 <constant name="Magnet_Q2eR_ID" value="204"/>
0297 <constant name="Pipe_in_Q2eR_ID" value="205"/>
0298 <constant name="Pipe_Q2eR_to_B2AeR_ID" value="206"/>
0299 <constant name="Magnet_B2AeR_ID" value="207"/>
0300 <constant name="Pipe_in_B2AeR_ID" value="208"/>
0301 <constant name="Pipe_B2AeR_to_B2BeR_ID" value="209"/>
0302 <constant name="Magnet_B2BeR_ID" value="210"/>
0303 <constant name="Pipe_in_B2BeR_ID" value="211"/>
0304 <constant name="Magnet_Q3eR_ID" value="212"/>
0305 <constant name="Vacuum_in_Q3eR_ID" value="213"/>
0306
0307 <documentation>
0308 ## Detector Definition Parameters
0309
0310 ## Constant naming convention
0311
0312 SubSystemNameFurtherDescriptor_quantity
0313
0314 Examples:
0315 - TrackerBarrelInside_length
0316 - EcalEndcapP_rmin
0317 - MRichFresnelLens_thickness
0318
0319 ### Naming Barrel and Endcaps
0320
0321 - **Barrel**
0322 - **EndcapP**
0323 - Postive Endcap (+z direction)
0324 - This is the ion beam side
0325 - **EndcapN**
0326 - Negative Endcap (-z direction)
0327 - This is the electron beam side
0328
0329 ## Parameter nomenclature
0330
0331 - "rmin", "rmax", "thickness" all refer to the radial direction.
0332 - "zmin", "zmax", "length", "offset" all refer to the z direction.
0333 - Positive and Negative are "EndcapP" and "EndcapN", respectively.
0334 - All values are positive (except offsets, which are positive in the hadron direction, i.e. towards EndCapP).
0335 When refering to a negative endcap z position, the values are
0336 also positive then negated when required. (Many endcap constructions are mirrored,
0337 hence a postive value.)
0338 - We will try to keep the subsystem component name first and the parameter after an "_" (eg, EcalBarrel_length").
0339
0340 </documentation>
0341
0342 <documentation>
0343 ## Rapidity constants
0344 </documentation>
0345 <constant name="Eta1_1_tan" value="tan(2*atan(exp(-1.1)))" />
0346 <constant name="Eta1_4_tan" value="tan(2*atan(exp(-1.4)))" />
0347 <constant name="Eta3_5_tan" value="tan(2*atan(exp(-3.5)))" />
0348 <constant name="Eta3_6_tan" value="tan(2*atan(exp(-3.6)))" />
0349 <constant name="Eta3_7_tan" value="tan(2*atan(exp(-3.7)))" />
0350 <constant name="Eta3_8_tan" value="tan(2*atan(exp(-3.8)))" />
0351 <constant name="Eta3_9_tan" value="tan(2*atan(exp(-3.9)))" />
0352 <constant name="Eta4_0_tan" value="tan(2*atan(exp(-4.0)))" />
0353 <constant name="Eta4_1_tan" value="tan(2*atan(exp(-4.1)))" />
0354 <constant name="Eta4_2_tan" value="tan(2*atan(exp(-4.2)))" />
0355 <constant name="Eta4_3_tan" value="tan(2*atan(exp(-4.3)))" />
0356 <constant name="Eta4_4_tan" value="tan(2*atan(exp(-4.4)))" />
0357 <constant name="Eta4_5_tan" value="tan(2*atan(exp(-4.5)))" />
0358 <constant name="Eta4_6_tan" value="tan(2*atan(exp(-4.6)))" />
0359 <constant name="Eta4_7_tan" value="tan(2*atan(exp(-4.7)))" />
0360 <constant name="Eta4_8_tan" value="tan(2*atan(exp(-4.8)))" />
0361
0362 <comment>Solenoid option</comment>
0363
0364 <documentation>
0365 ## Solenoid Magnet Parameters
0366
0367 When changing here, also change the include file in athena.xml.
0368 </documentation>
0369
0370 <comment>Solenoid option</comment>
0371 <constant name="Solenoid_length" value="3840.0*mm"/>
0372 <constant name="Solenoid_rmin" value="1600.0*mm"/>
0373 <constant name="Solenoid_thickness" value="455*mm"/>
0374 <constant name="Solenoid_offset" value="-240*mm"/>
0375
0376 <!--
0377 <comment>Helmholtz option</comment>
0378 <constant name="Solenoid_length" value="3840.0*mm"/>
0379 <constant name="Solenoid_rmin" value="1655.0*mm"/> <comment> Larger inner bore radius </comment>
0380 <constant name="Solenoid_thickness" value="640*mm"/>
0381 <constant name="Solenoid_offset" value="10*mm"/>
0382 </comment>
0383 -->
0384
0385 <constant name="Solenoid_rmax" value="Solenoid_rmin + Solenoid_thickness"/>
0386 <constant name="SolenoidForward_zmax" value="Solenoid_length/2. + Solenoid_offset"/>
0387 <constant name="SolenoidBackward_zmax" value="Solenoid_length/2. - Solenoid_offset"/>
0388 <constant name="SolenoidBarrel_rmin" value="Solenoid_rmin"/>
0389 <constant name="SolenoidBarrel_length" value="Solenoid_length"/>
0390
0391 <documentation>
0392 ## Tracking Detector Parameters
0393
0394 </documentation>
0395
0396 <documentation>
0397 ### Vertex Tracking Region
0398 </documentation>
0399 <constant name="VertexTrackingRegion_rmin" value="Beampipe_rmax + 1.0*mm" />
0400 <constant name="VertexTrackingRegion_rmax" value="100.0*mm" />
0401 <constant name="VertexTrackingRegionP_zmax" value="240.0*mm" />
0402 <constant name="VertexTrackingRegionN_zmax" value="240.0*mm" />
0403 <constant name="VertexTrackingRegion_length" value="VertexTrackingRegionP_zmax + VertexTrackingRegionN_zmax" />
0404
0405 <documentation>
0406 ### Central Tracking Region
0407 TrackerBarrel_rmax: also the rmin for the barrel PID system (DIRC)
0408 Note: The barrel rmax and endcap lengths are the maximum extent allowed for
0409 the barrel and endcap layers, not the position of the final layer.
0410
0411
0412 </documentation>
0413
0414 <constant name="CentralTrackingRegion_rmax" value="950.0*mm" />
0415 <constant name="CentralTrackingRegionP_zmax" value="1700.0*mm" />
0416 <constant name="CentralTrackingRegionN_zmax" value="1500.0*mm" />
0417 <constant name="CentralTrackingRegion_length" value="CentralTrackingRegionP_zmax + CentralTrackingRegionN_zmax" />
0418 <comment>
0419 tan(theta) to determine rmin in the outer tracking region (due to tapered beampipe)
0420 </comment>
0421 <constant name="CentralTrackingBarrel_tan" value="Eta1_1_tan" />
0422 <constant name="CentralTrackingRegionP_tan" value="Eta3_7_tan * 1.00" />
0423 <constant name="CentralTrackingRegionN_tan" value="Eta4_0_tan * 0.99" />
0424
0425 <documentation level="0">
0426 ### PID Detector Region Parameters
0427 </documentation>
0428
0429 <comment> Global PID regions with suballocations for TOF and RICH detectors </comment>
0430 <constant name="ForwardPIDRegion_zmin" value="CentralTrackingRegionP_zmax" />
0431 <constant name="ForwardPIDRegion_length" value="160.0*cm" />
0432
0433 <comment> Forward TOF region currenlty empty for future upgrades </comment>
0434 <constant name="ForwardTOFRegion_zmin" value="ForwardPIDRegion_zmin" />
0435 <constant name="ForwardTOFRegion_length" value="20.0*cm" />
0436 <constant name="ForwardTOFRegion_rmax" value="CentralTrackingRegion_rmax" />
0437 <constant name="ForwardTOFRegion_tan" value="CentralTrackingRegionP_tan" />
0438
0439 <comment> Forward RICH region </comment>
0440 <constant name="ForwardRICHRegion_zmin" value="ForwardTOFRegion_zmin + ForwardTOFRegion_length" />
0441 <constant name="ForwardRICHRegion_length" value="ForwardPIDRegion_length - ForwardTOFRegion_length" />
0442 <comment> tangent of the opening angle at the front and back of the RICH </comment>
0443 <constant name="ForwardRICHRegion_tan1" value="CentralTrackingRegionP_tan * 0.88" />
0444 <constant name="ForwardRICHRegion_tan2" value="Eta3_6_tan * 0.89" />
0445
0446 <constant name="BackwardPIDRegion_zmin" value="CentralTrackingRegionN_zmax" />
0447 <constant name="BackwardPIDRegion_length" value="60.0*cm" />
0448 <constant name="BackwardPIDRegion_rmax" value="CentralTrackingRegion_rmax" />
0449 <constant name="BackwardPIDRegion_tan" value="CentralTrackingRegionN_tan * 0.92" />
0450
0451 <comment> Backward RICH region </comment>
0452 <constant name="BackwardRICHRegion_zmin" value="BackwardPIDRegion_zmin" />
0453 <constant name="BackwardRICHRegion_length" value="58.0*cm" />
0454
0455 <comment> Backward TOF region, currently empty for upgrades </comment>
0456 <constant name="BackwardTOFRegion_zmin" value="BackwardRICHRegion_zmin + BackwardRICHRegion_length" />
0457 <constant name="BackwardTOFRegion_length" value="BackwardPIDRegion_length - BackwardRICHRegion_length" />
0458
0459 <comment> Note: PID has space for DIRC, ExtraSpace sits past the PID</comment>
0460 <constant name="BarrelPIDRegion_thickness" value="8.0 * cm" />
0461 <constant name="BarrelExtraSpace_thickness" value="0.0 * cm" />
0462
0463 <documentation>
0464 ## Forward/backward tracking region behind the PID detectors
0465 </documentation>
0466
0467 <constant name="BackwardTrackingRegion_tan" value="CentralTrackingRegionN_tan" />
0468 <constant name="BackwardTrackingRegion_zmin" value="BackwardPIDRegion_zmin + BackwardPIDRegion_length" />
0469 <constant name="ForwardTrackingRegion_tan" value="ForwardRICHRegion_tan2" />
0470 <constant name="ForwardTrackingRegion_zmin" value="ForwardPIDRegion_zmin + ForwardPIDRegion_length" />
0471 <constant name="ForwardTrackingRegion_length" value="10.0*cm" />
0472 <constant name="BackwardTrackingRegion_length" value="0.0*cm" />
0473
0474 <comment> Total length of the endcap detectors in front of the calorimeter</comment>
0475 <constant name="BackwardInnerEndcapRegion_length" value="BackwardPIDRegion_length + BackwardTrackingRegion_length"/>
0476 <constant name="ForwardInnerEndcapRegion_length" value="ForwardPIDRegion_length + ForwardTrackingRegion_length"/>
0477
0478 <documentation>
0479 ## Service gaps
0480
0481 Service gaps in FW direction (before endcapP ECAL) and BW direction (before endcapN HCAL)
0482 </documentation>
0483 <constant name="ForwardServiceGap_length" value="10.0*cm"/>
0484 <constant name="BackwardServiceGap_length" value="10.0*cm"/>
0485
0486 <documentation level="3">
0487 ## Calorimeter Parameters
0488 </documentation>
0489 <constant name="CaloSides" value="12"/>
0490
0491 <constant name="EcalEndcapP_zmin" value="ForwardPIDRegion_zmin + ForwardInnerEndcapRegion_length + ForwardServiceGap_length" />
0492 <constant name="EcalEndcapP_length" value="30*cm" />
0493 <constant name="EcalEndcapP_rmin" value="200.0*mm" />
0494 <comment> extra 50cm rmax that "protrudes" into the HCAL</comment>
0495 <constant name="EcalEndcapP_rmax" value="floor(Eta1_1_tan * EcalEndcapP_zmin)"/>
0496
0497 <constant name="EcalEndcapN_zmin" value="BackwardPIDRegion_zmin + BackwardInnerEndcapRegion_length"/>
0498 <constant name="EcalEndcapN_length" value="60*cm" />
0499 <comment>
0500 rmin1: rmin round electron pipe (ignoring the hadron pipe)
0501 rmin2: rmin around both beam pipes
0502 </comment>
0503 <constant name="EcalEndcapN_rmin1" value="Eta4_6_tan * EcalEndcapN_zmin" />
0504 <constant name="EcalEndcapN_rmin2" value="Eta4_1_tan * EcalEndcapN_zmin" />
0505 <constant name="EcalEndcapN_rmax" value="CentralTrackingRegion_rmax" />
0506
0507 <constant name="EcalBarrelRegion_thickness" value="45.0*cm"/>
0508 <constant name="EcalBarrel_rmin" value="CentralTrackingRegion_rmax + BarrelPIDRegion_thickness + BarrelExtraSpace_thickness"/>
0509 <constant name="EcalBarrelForward_zmax" value="SolenoidForward_zmax"/>
0510 <constant name="EcalBarrelBackward_zmax" value="EcalEndcapN_zmin + 30*cm"/>
0511 <constant name="EcalBarrel_length" value="EcalBarrelForward_zmax + EcalBarrelBackward_zmax"/>
0512 <constant name="EcalBarrel_offset" value="(EcalBarrelForward_zmax - EcalBarrelBackward_zmax)/2.0"/>
0513 <constant name="EcalBarrelReadout_length" value="20*cm"/>
0514
0515
0516 <documentation level="3">
0517 ## Special DIRC parameters (depend on the ECAL setup)
0518 </documentation>
0519 <constant name="DIRCReadout_length" value="30*cm"/>
0520 <constant name="DIRCForward_length" value="0*cm"/>
0521 <constant name="DIRCForward_zmax" value="EcalBarrelForward_zmax "/>
0522 <constant name="DIRCBackward_zmax" value="EcalBarrelBackward_zmax + EcalBarrelReadout_length +DIRCReadout_length "/>
0523 <constant name="DIRC_length" value="DIRCForward_zmax + DIRCBackward_zmax"/>
0524 <constant name="DIRC_offset" value="(DIRCForward_zmax - DIRCBackward_zmax)/2"/>
0525 <constant name="DIRC_rmin" value="CentralTrackingRegion_rmax"/>
0526 <constant name="DIRC_rmax" value="DIRC_rmin + BarrelPIDRegion_thickness"/>
0527
0528 <documentation>
0529 ## Hadronic Calorimeter Parameters
0530 </documentation>
0531
0532 <constant name="HcalEndcapP_zmin" value="EcalEndcapP_zmin + EcalEndcapP_length"/>
0533 <constant name="HcalEndcapP_length" value="120.0*cm"/>
0534 <comment> HcalEndcapP needs to clear the expanding beampipe with 2 * crossing angle + its radius of BeampipeOD / 2</comment>
0535 <constant name="HcalEndcapP_rmin" value="max((HcalEndcapP_zmin + HcalEndcapP_length) * tan(2.0 * abs(CrossingAngle)) + BeampipeOD / 2.0, 15 * cm)"/>
0536
0537 <constant name="HcalEndcapN_zmin" value="max(DIRCBackward_zmax + BackwardServiceGap_length, 355*cm)"/>
0538 <constant name="HcalEndcapN_length" value="105.0*cm"/>
0539 <comment> HcalEndcapN needs to clear the straight beampipe with 1 * crossing angle + its radius of 22.25 mm </comment>
0540 <constant name="HcalEndcapN_rmin" value="max((HcalEndcapN_zmin + HcalEndcapN_length) * tan(abs(CrossingAngle)) + 22.25 * mm, 11 * cm)"/>
0541
0542 <constant name="HcalBarrel_thickness" value="100.0*cm "/>
0543 <constant name="HcalBarrel_rmin" value="max(Solenoid_rmax, 230*cm)"/>
0544 <constant name="HcalBarrel_rmax" value="HcalBarrel_rmin + HcalBarrel_thickness"/>
0545 <constant name="HcalBarrelForward_zmax" value="HcalEndcapP_zmin - ForwardServiceGap_length - EcalEndcapP_length"/>
0546 <constant name="HcalBarrelBackward_zmax" value="HcalEndcapN_zmin - BackwardServiceGap_length"/>
0547
0548 <comment>
0549 These are used by ddsim, the region where we store all secondaries
0550
0551 For now they are forced to be symmetric, and we cover up to the start of the backward ECAL.
0552 (this means in the forward region we stop in the middle of the RICH).
0553 </comment>
0554
0555 <constant name="tracker_region_rmax" value="EcalBarrel_rmin"/>
0556 <constant name="tracker_region_zmax" value="EcalEndcapN_zmin"/>
0557
0558 </define>
