[Gate-users] About geometry

[부당]

dear gate-user
I am a beginner in vgate.
I have a question a bout geometry.
Paper : 
The Inveon PET system is a lutetium oxyorthosilicate (LSO)– based, high-sensitivity, high-resolution preclinical PET scanner The system has been installed at the PET Center, Nanfang Hospital of Southern Medical University at Guangzhou, Guangdong (Lu et al. 2014). It consists of 64 detector blocks arranged in 4 contiguous rings. Each detector block has a 20 × 20 LSO crystal array configuration. Each crystal element is 10.0 mm long and has a crosssectional area of 1.51 × 1.51 mm. The crystal pitch is 1.59 mm in both axial and transverse directions. The crystal ring diameter is 16.1 cm while the transaxial and axial FOV are 10.0 cm and 12.7 cm[1]
 
I tried setting up by looking at the following

## W O R L D
#/gate/world/geometry/setXLength 400. cm
/gate/world/geometry/setYLength 400. cm
/gate/world/geometry/setZLength 400. cm
# S Y S T E M (E C A T)
/gate/world/daughters/name ecat
/gate/world/daughters/insert cylinder
/gate/ecat/setMaterial Air
/gate/ecat/geometry/setRmax 16.1 cm
/gate/ecat/geometry/setRmin 10.0 cm
/gate/ecat/geometry/setHeight 12.7 cm
/gate/ecat/vis/forceWireframe
# B L O C K
/gate/ecat/daughters/name vol1
/gate/ecat/daughters/insert box
/gate/vol1/placement/setTranslation 427.0 0.0 0.0 mm
/gate/vol1/geometry/setXLength 10.0 mm
/gate/vol1/geometry/setYLength 30.351 mm
/gate/vol1/geometry/setZLength 30.351 mm
/gate/vol1/setMaterial Air
/gate/vol1/vis/setColor yellow
/gate/vol1/vis/forceWireframe
# C R Y S T A L
/gate/vol1/daughters/name vol2
/gate/vol1/daughters/insert box
/gate/vol2/geometry/setXLength 10.0 mm
/gate/vol2/geometry/setYLength 1.51 mm
/gate/vol2/geometry/setZLength 1.51 mm
/gate/vol2/setMaterial BGO
/gate/vol2/vis/setColor red
# R E P E A T C R Y S T A L
/gate/vol2/repeaters/insert cubicArray
/gate/vol2/cubicArray/setRepeatNumberX 1
/gate/vol2/cubicArray/setRepeatNumberY 20
/gate/vol2/cubicArray/setRepeatNumberZ 20
/gate/vol2/cubicArray/setRepeatVector 0. 1.59 1.59 mm
# R E P E A T BLOCK
/gate/vol1/repeaters/insert linear
/gate/vol1/linear/setRepeatNumber 4
/gate/vol1/linear/setRepeatVector 0. 0. 38.8 mm
/gate/vol1/repeaters/insert ring
/gate/vol1/ring/setRepeatNumber 16
# 1. A T T A C H S Y S T E M
/gate/systems/ecat/block/attach vol1
/gate/systems/ecat/crystal/attach vol2
# 2. A T T A C H C R Y S T A L SD
/gate/vol2/attachCrystalSD
/gate/world/daughters/name phantom
/gate/world/daughters/insert cylinder
/gate/phantom/setMaterial Water
/gate/phantom/vis/forceWireframe
/gate/phantom/vis/setColor green
/gate/phantom/geometry/setRmax 10.0 cm
/gate/phantom/geometry/setHeight 20. cm
/gate/phantom/attachPhantomSD
 
I want to know what went wrong.
Thanks for reading.
 
[1] 2016_NIM_Validation of a Monte Carlo simulation of the Inveon PET scanner using GATE 
https://www.sciencedirect.com/science/article/pii/S0168900216302674


 
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