[Gate-users] About the shape of the source

[arno]

Dear Gate users:
I am using the Gatev6.1 to simulate the
PET<http://dict.youdao.com/w/simulate/>, I want to generate a box-style
source and am not sure How to set the keywords (paralp,parthe,parphi).
The following is my code:
/gate/source/addSource twogamma1
/gate/source/twogamma1/setActivity 100000 becquerel
/gate/source/twogamma1/setType backtoback
/gate/source/twogamma1/gps/particle gamma
/gate/source/twogamma1/gps/energytype Mono
/gate/source/twogamma1/gps/monoenergy 511 keV
/gate/source/twogamma1/gps/type Volume
/gate/source/twogamma1/gps/shape Para
/gate/source/twogamma1/gps/halfx 0.5 mm
/gate/source/twogamma1/gps/halfy 0.509615 mm
/gate/source/twogamma1/gps/halfz 0.509615 mm
/gate/source/twogamma1/gps/paralp 90 deg
/gate/source/twogamma1/gps/parthe 90 deg
/gate/source/twogamma1/gps/parphi 90 deg
/gate/source/twogamma1/gps/angtype iso
/gate/source/twogamma1/gps/mintheta 0. deg
/gate/source/twogamma1/gps/maxtheta 180. deg
/gate/source/twogamma1/gps/minphi 0. deg
/gate/source/twogamma1/gps/maxphi 360. deg
/gate/source/twogamma1/attachTo voxel1

Thanks a lot!
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