[Gate-users] Rotation of a gps source

Jessica Saiz jesaiz at ucdavis.edu
Mon Dec 19 04:46:02 CET 2011

Hi Ida,

I've been trying to figure this out myself - I am using two perpendicular
cylindrical sources, which in v5 is not as easy as one would think.  Up to
this point, I have had to make one of them a voxelized source, which is not
a simple command line rotation, but seems to be the only way to do it.
If anyone knows an easier way, I would appreciate hearing about it also.


2011/12/16 Ida Häggström <ida.haggstrom at radfys.umu.se>

> Hello!
> I wonder if anyone has a way of rotating a source in GATE v.5.0? It's easy
> to rotate a volume, for example a cylinder like:
> /gate/phantom/placement/setRotationAxis -1 1 0
> /gate/phantom/placement/setRotationAngle 30 deg
> but I cannot find any equivalent for rotation of the source as well to
> coincide with the tilted phantom. My source is a cylinder like:
> /gate/source/twogamma/gps/type Volume
> /gate/source/twogamma/gps/shape Cylinder
> /gate/source/twogamma/gps/radius 10 mm
> /gate/source/twogamma/gps/halfz 110 mm
> /gate/source/twogamma/gps/centre 100. 100. 0. mm
> and I then want to rotate this cylinder source as well. I've found on the
> GATE wiki v.6.1 that you can write:
> /gate/source/ [Source name] /setRotationAxis 1 0 0
> /gate/source/ [Source name] /setRotationAngle 90 deg
> but that doesn't seem to work in v.5.0. I haven't found anything useful in
> the GEANT4 forum either...
> Thanks for any input!
> Ida
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