[Gate-users] Cylinder source
dongyun at iit.edu
Wed Nov 12 21:42:50 CET 2008
Thanks for your help. It works now. I believe the commands, /gps/posrot1
and /gps/posrot2, don't appear in the GATE manual, but I found them in
Geant4 documents about gps, "/gps/pos/rot1" and "/gps/pos/rot2", with a
little differences with what you gave me. I feel curious how can users
find them, should I look at source codes?
Marc Chamberland wrote:
> You're right, the source is stuck to the z-axis. But you can rotate
> the axes! If you want to rotate the source along the x-axis you would
> use the following command:
> /gate/source/YOURSOURCENAME/gps/posrot1 0. 0. -1.
> What posrot1 does is define a new x-axis, called x'. In this case, x'
> is defined as being along the original z-axis (0, 0, -1). That means
> your source is now along the original x-axis (
> There is also a function called posrot2 which defines a vector in the
> x'-y' plane. Using a combination of these functions, you can rotate
> your source any way you want in 3D.
> Hope that helps!
> Le 08-11-11 à 15:50, Yun Dong a écrit :
>> Hi GATE users,
>> I want to define a cylinder source in CylindricalPET of GATE. My
>> cylinder source should be in X-direction not in Z-direction, but from
>> manual, it looks like only Z-direction cylinder source can be done.
>> My question is how can I define it in X-direction ? Did anyone have
>> the same issue?
>> Gate-users mailing list
>> Gate-users at lists.healthgrid.org
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