[Gate-users] half size or full size for trpd ?
ACSauve at lbl.gov
Fri May 14 00:39:23 CEST 2010
Hello the collaboration,
I am designing a pinhole SPECT camera and to model the pinhole collimator I am using
You specify in the user manual that I should define for this trpd the half length along X ,Y and Z.
I also define a box that just fits this trpd and since you specify in the user manual to define for a box
the full length along X,Y and Z that's what I did.
I find that the box is twice as big as the trpd.
What should I believe are the right dimensions ? the ones for the trpd or for the box ?
I want to believe that the box's dimensions are right but could you confirm that for me.
Also when you do a translation of a box it is done from the center of the box right ?
below is my code.
/gate/Boxhead/geometry/setXLength 10.0 cm
/gate/Boxhead/geometry/setYLength 16.25 cm
/gate/Boxhead/geometry/setZLength 22.75 cm
/gate/Boxhead/placement/setTranslation 8. 0. 0. cm
/gate/SPECThead/geometry/setX1Length 22.75 cm
/gate/SPECThead/geometry/setY1Length 16.25 cm
/gate/SPECThead/geometry/setX2Length 0.8 cm
/gate/SPECThead/geometry/setY2Length 0.8 cm
/gate/SPECThead/geometry/setZLength 10. cm
/gate/SPECThead/placement/setRotationAxis 0 1 0
/gate/SPECThead/placement/setRotationAngle -90 deg
/gate/SPECThead/placement/setTranslation 0.0 0. 0. cm
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