MC Detector Construction
MC team member
IHEP Beijing
Status
available
- simply a pile of LYSO crystals (without mechanical) to study the performance of CALO (by both GEANT4 and FLUKA)
- simple CALO + "big plate" multi-layers of STK to estimate acceptante (GEANT4)
- LYSO crystal + WLSF to study the optical process (GEANT4)
- ICCD including its sub-systems (some optical sw)
- 2015 CALO prototype (GEANT4)
- octagon CALO (GEANT4)
- simple CALO + TRD to study the feasibility of in-flight X-calibration for proton at 1-10TeV (GEANT4)
developing
- octagon CALO + STK + PSD layout to study the coverage rate, trigger strategy and trigger rate (GEANT4)
- main frame of the payload, mechanical stucture for each of the sub-detectors (CAD to GEANT4)
- description for the 2017 test beam prototype
future
- CSS and joint decription with HERD payload
- real "STK"
- ...
Current overall layout
The basic design is shown below.
1) the green part means crystal array(CALO);
2) the blue and pink box represent side and top silicon tracker(STK) respectively;
3) the yellow and red box represent side and top plastic scintillator detector(PSD).
CALO
The center calorimeter consists of 7497 LYSO crystals. Its X-Y projection( top view) is shown is Figure 1.
The detector is divided into 21 layers along the X direction. the gap size between crystals in x direction is 8mm.
the crystal gap is 4mm in the y and z directions.
The carbon fiber(CF) structure between the crystals is not included in the simulation.
STK
In this version, the top and side stk module include 12 ladders(6 x&y layers).
(recently, the number of the side stk layers is reduced to 3.)
the gap size between adjacent x-y ladder is 6mm, and the gap between layers is 31mm (CF support structure).
For simplicity, each x&y layer is represented by a flat plate in simulation, and its thickness is 6mm.
(see Figure 2,3)
the read dashed line in figure 2 means the outer CF structure of the stk.
the top view and side view of the STK are also shown in figure 4 and figure 5.
Size:
1) side STK: 1330*665*253mm
2) top STK: 1330*1330*253mm
PSD
The PSD system consists of many scintillating strips (1cm thick, 12cm wide). The length of the strip is related to the size of the internal detector.
In the present simulation, the combination of strips is represented by a flat plate with a thickness of 2cm.
the top view and side view of the PSD are also shown in figure 6 and figure 7.
Size:
1) side PSD: 170*110*2cm
2) top PSD: 177*177*2cm
For more details, please see the source file in the attachment.
DetectorConstruction.hh
TRD
--
xu ming - 2017-01-10
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