<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial">Dear All,<div><br></div><div>Right now I am trying to model a focused collimator with GATE, namely, a collimator with fan-beam septal. It seems the built-in script does not work. </div><div>Is there anyone has the experience to model a fan beam collimator? Could you please tell me how to model it in GATE?</div><div>Thank you very much! </div><div><br></div><div>Best regards</div><div>Wei.</div><div>--------------------------------------------------------------</div><div><div>/gate/SPECThead/daughters/name fanbeam</div><div>/gate/SPECThead/daughters/insert collimator</div><div><br></div><div>/gate/fanbeam/setMaterial Lead </div><div>/gate/fanbeam/geometry/setDimensionY 53.5 cm</div><div>/gate/fanbeam/geometry/setDimensionX 25.0 cm</div><div><br></div><div>/gate/fanbeam/geometry/setFocalDistanceY 0.0 cm</div><div>/gate/fanbeam/geometry/setFocalDistanceX 35.0 cm</div><div><br></div><div>/gate/fanbeam/geometry/setHeight 5.8 cm</div><div><br></div><div>/gate/fanbeam/geometry/setSeptalThickness 0.8 cm</div><div><br></div><div>/gate/fanbeam/geometry/setInnerRadius 1.70 cm</div><div>/gate/fanbeam/placement/setRotationAxis 0 0 1</div><div>/gate/fanbeam/placement/setRotationAngle -90 deg</div><div>/gate/fanbeam/vis/setColor blue</div><div>/gate/fanbeam/vis/forceWireframe</div></div><div>______________________________________________________________________</div></div><br><br><span title="neteasefooter"><span id="netease_mail_footer"></span></span>