[Gate-users] [GATE-users] PET system consisting of several rsector
김연경
dusrud026 at gmail.com
Mon Jun 17 13:47:25 CEST 2019
Dear GATE users,
I designed a cylindricalPET consisting of two rsector.
If there is more than one rsector in a geometry, it seems that the
coincidence count is not calculated correctly. Therefore, the test
simulation was carried out by varying the number of rsector constituting
the cylindrical PET.
As a result, the coincidence counting rate of cylindericalPET with one
rsector was estimated to be twice that the coincidence counting rate of
cylindricalPET with two sectors.
I want to know if it is a problem with the digitizer part or if I have to
get an error in GATE.
Please let me know if you have any sample code or documentation that can
resolve this problem.
I attach the code for cylindericalPET.
########geometry###########
/gate/world/daughters/name cylindricalPET
/gate/world/daughters/insert cylinder
/gate/cylindricalPET/placement/setTranslation 0.0 0.0 0.0 cm
/gate/cylindricalPET/geometry/setRmax 160 mm
/gate/cylindricalPET/geometry/setRmin 138.5 mm
/gate/cylindricalPET/geometry/setHeight 232.8 mm
/gate/cylindricalPET/setMaterial Air
/gate/cylindricalPET/vis/setVisible 0
/gate/cylindricalPET/daughters/name rsector
/gate/cylindricalPET/daughters/insert box
/gate/rsector/placement/setTranslation 146 0.0 0. mm
/gate/rsector/geometry/setXLength 15.0 mm
/gate/rsector/geometry/setYLength 25.8 mm
/gate/rsector/geometry/setZLength 129 mm
/gate/rsector/setMaterial Air
/gate/rsector/vis/setColor red
/gate/rsector/vis/setVisible 0
/gate/cylindricalPET/daughters/name rsector1
/gate/cylindricalPET/daughters/insert box
/gate/rsector1/placement/setTranslation 146 0.0 90.3 mm
/gate/rsector1/geometry/setXLength 15.0 mm
/gate/rsector1/geometry/setYLength 25.8 mm
/gate/rsector1/geometry/setZLength 51.6 mm
/gate/rsector1/setMaterial Air
/gate/rsector1/vis/setColor red
/gate/rsector1/vis/setVisible 0
/gate/rsector/daughters/name module
/gate/rsector/daughters/insert box
/gate/module/placement/setTranslation 0. 0.0 0.0 cm
/gate/module/geometry/setXLength 15.0 mm
/gate/module/geometry/setYLength 25.8 mm
/gate/module/geometry/setZLength 25.8 mm
/gate/module/setMaterial Air
/gate/module/vis/setVisible 0
/gate/rsector1/daughters/name module1
/gate/rsector1/daughters/insert box
/gate/module1/placement/setTranslation 0. 0.0 0.0 cm
/gate/module1/geometry/setXLength 15.0 mm
/gate/module1/geometry/setYLength 25.8 mm
/gate/module1/geometry/setZLength 25.8 mm
/gate/module1/setMaterial Air
/gate/module1/vis/setVisible 0
/gate/module/daughters/name submodule
/gate/module/daughters/insert box
/gate/submodule/placement/setTranslation 0.0 0.0 0.0 cm
/gate/submodule/geometry/setXLength 15 mm
/gate/submodule/geometry/setYLength 25.8 mm
/gate/submodule/geometry/setZLength 25.8 mm
/gate/submodule/setMaterial Air
/gate/submodule/vis/setVisible 0
/gate/module1/daughters/name submodule1
/gate/module1/daughters/insert box
/gate/submodule1/placement/setTranslation 0.0 0.0 0.0 cm
/gate/submodule1/geometry/setXLength 15 mm
/gate/submodule1/geometry/setYLength 25.8 mm
/gate/submodule1/geometry/setZLength 25.8 mm
/gate/submodule1/setMaterial Air
/gate/submodule1/vis/setVisible 0
/gate/submodule/daughters/name crystal
/gate/submodule/daughters/insert box
/gate/crystal/placement/setTranslation 0.0 0.0 0.0 cm
/gate/crystal/geometry/setXLength 15.0 mm
/gate/crystal/geometry/setYLength 3.11 mm
/gate/crystal/geometry/setZLength 3.11 mm
/gate/crystal/setMaterial Air
/gate/submodule1/daughters/name crystal1
/gate/submodule1/daughters/insert box
/gate/crystal1/placement/setTranslation 0.0 0.0 0.0 cm
/gate/crystal1/geometry/setXLength 15.0 mm
/gate/crystal1/geometry/setYLength 3.11 mm
/gate/crystal1/geometry/setZLength 3.11 mm
/gate/crystal1/setMaterial Air
/gate/crystal/daughters/name LYSO
/gate/crystal/daughters/insert box
/gate/LYSO/placement/setTranslation 0.0 0.0 0.0 cm
/gate/LYSO/geometry/setXLength 15. mm
/gate/LYSO/geometry/setYLength 3.11 mm
/gate/LYSO/geometry/setZLength 3.11 mm
/gate/LYSO/setMaterial LYSO
/gate/LYSO/vis/setColor green
/gate/crystal1/daughters/name LYSO1
/gate/crystal1/daughters/insert box
/gate/LYSO1/placement/setTranslation 0.0 0.0 0.0 cm
/gate/LYSO1/geometry/setXLength 15. mm
/gate/LYSO1/geometry/setYLength 3.11 mm
/gate/LYSO1/geometry/setZLength 3.11 mm
/gate/LYSO1/setMaterial LYSO
/gate/LYSO1/vis/setColor green
/gate/crystal/repeaters/insert cubicArray
/gate/crystal/cubicArray/setRepeatNumberX 1
/gate/crystal/cubicArray/setRepeatNumberY 8
/gate/crystal/cubicArray/setRepeatNumberZ 8
/gate/crystal/cubicArray/setRepeatVector 0.0 3.19 3.19 mm
/gate/crystal1/repeaters/insert cubicArray
/gate/crystal1/cubicArray/setRepeatNumberX 1
/gate/crystal1/cubicArray/setRepeatNumberY 8
/gate/crystal1/cubicArray/setRepeatNumberZ 8
/gate/crystal1/cubicArray/setRepeatVector 0.0 3.19 3.19 mm
/gate/submodule/repeaters/insert cubicArray
/gate/submodule/cubicArray/setRepeatNumberX 1
/gate/submodule/cubicArray/setRepeatNumberY 1
/gate/submodule/cubicArray/setRepeatNumberZ 1
/gate/submodule/cubicArray/setRepeatVector 0.0 25.8 25.8 mm
/gate/submodule1/repeaters/insert cubicArray
/gate/submodule1/cubicArray/setRepeatNumberX 1
/gate/submodule1/cubicArray/setRepeatNumberY 1
/gate/submodule1/cubicArray/setRepeatNumberZ 1
/gate/submodule1/cubicArray/setRepeatVector 0.0 25.8 25.8 mm
/gate/module/repeaters/insert cubicArray
/gate/module/cubicArray/setRepeatNumberX 1
/gate/module/cubicArray/setRepeatNumberY 1
/gate/module/cubicArray/setRepeatNumberZ 5
/gate/module/cubicArray/setRepeatVector 0.00 25.8 25.8 mm
/gate/module1/repeaters/insert cubicArray
/gate/module1/cubicArray/setRepeatNumberX 1
/gate/module1/cubicArray/setRepeatNumberY 1
/gate/module1/cubicArray/setRepeatNumberZ 2
/gate/module1/cubicArray/setRepeatVector 0.00 25.8 25.8 mm
/gate/rsector/repeaters/insert ring
/gate/rsector/ring/setRepeatNumber 34
/gate/rsector1/repeaters/insert ring
/gate/rsector1/ring/setRepeatNumber 34
/gate/systems/cylindricalPET/rsector/attach rsector
/gate/systems/cylindricalPET/rsector/attach rsector1
/gate/systems/cylindricalPET/module/attach module
/gate/systems/cylindricalPET/module/attach module1
/gate/systems/cylindricalPET/submodule/attach submodule
/gate/systems/cylindricalPET/submodule/attach submodule1
/gate/systems/cylindricalPET/crystal/attach crystal
/gate/systems/cylindricalPET/crystal/attach crystal1
/gate/systems/cylindricalPET/layer0/attach LYSO
/gate/systems/cylindricalPET/layer1/attach LYSO1
/gate/LYSO/attachCrystalSD
/gate/LYSO1/attachCrystalSD
/gate/systems/cylindricalPET/describe
#########digitizer############
/gate/digitizer/Singles/insert adder
/gate/digitizer/Singles/insert readout
/gate/digitizer/Singles/readout/setDepth 5
/gate/digitizer/Singles/insert blurring
/gate/digitizer/Singles/blurring/setLaw linear
/gate/digitizer/Singles/blurring/linear/setResolution 0.13
/gate/digitizer/Singles/blurring/linear/setEnergyOfReference 511. keV
/gate/digitizer/Singles/insert thresholder
/gate/digitizer/Singles/thresholder/setThreshold 400. keV
/gate/digitizer/Singles/insert upholder
/gate/digitizer/Singles/upholder/setUphold 650. keV
/gate/digitizer/Singles/insert crystalblurring
/gate/digitizer/Singles/crystalblurring/setCrystalResolutionMin 0.8
/gate/digitizer/Singles/crystalblurring/setCrystalResolutionMax 0.18
/gate/digitizer/Singles/crystalblurring/setCrystalQE 0.85
/gate/digitizer/Singles/crystalblurring/setCrystalEnergyOfReference 511 keV
/gate/digitizer/Singles/insert timeResolution
/gate/digitizer/Singles/timeResolution/setTimeResolution 220. ps
/gate/digitizer/Singles/insert deadtime
/gate/digitizer/Singles/deadtime/setDeadTime 150. ns
/gate/digitizer/Singles/deadtime/setMode paralysable
/gate/digitizer/Singles/deadtime/chooseDTVolume crystal
/gate/digitizer/Coincidences/setWindow 440. ps
/gate/digitizer/Coincidences/minSectorDifference 2
/gate/digitizer/Coincidences/MultiplesPolicy takeWinnerOfGoods
/gate/digitizer/Coincidences/setOffset 0. ns
/gate/digitizer/name delay
/gate/digitizer/insert coincidenceSorter
/gate/digitizer/delay/minSectorDifference 2
/gate/digitizer/delay/setOffset 100. ns
/gate/digitizer/delay/setWindow 8. ns
/gate/digitizer/delay/MultiplesPolicy takeAllGoods
Thank you in advance for your help.
Best regards
--
YEONKYEONG KIM
Department of Electronic Engineering,Sogang University
Tel : +82-2-713-2652
Mobile : +82-10-9996-3644
Email : dusrud026 at gmail.com
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