<div dir="ltr"><div><div><div><div>Dear GATE users,<br><br></div>I'm trying to use the "generic trapezoid" volume to define a multi-pinhole collimator, with each pinhole focusing different parts of the FOV.<br>
</div><div>Consider the following set-up:<br><br>/gate/world/daughters/name trap1<br>/gate/world/daughters/insert trap<br>/gate/trap1/geometry/setDx1 26. mm<br>/gate/trap1/geometry/setDx2 26. mm<br>/gate/trap1/geometry/setDz 5. mm<br>
/gate/trap1/geometry/setTheta 0. deg<br>/gate/trap1/geometry/setDy1 26. mm<br>/gate/trap1/geometry/setDy2 21. mm<br>/gate/trap1/geometry/setDx3 21. mm<br>/gate/trap1/geometry/setDx4 21. mm<br>/gate/trap1/geometry/setPhi 90. deg<br>
/gate/trap1/geometry/setAlp1 0. deg<br>/gate/trap1/geometry/setAlp2 0. deg<br>/gate/trap1/setMaterial Air<br>/gate/trap1/placement/setTranslation 0. 0. 0. mm<br><br></div>When I change the "theta" parameter, the face at +pDz goes up or down in the Y direction.<br>
</div>How can I make that same face move in the X direction (right or left)?<br></div>I tried to modify the phi/Alp1/Alp2 parameters, but the visualization either stays the same or it gives me an error...<br><div><div><br>
</div><div>Thank you in advance, <br><br clear="all"></div><div><div><div><div><div>Debora Salvado</div>
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