<div dir="ltr"><p class="">Hi Eunsin, </p>
<p class=""> </p>
<p class="">I know its not the easiest thing to do because there seems
to be quite a disconnect between “sources” and “geometry”. </p>
<p class="">So just in case you haven’t received an answer yet I believe
you can do it using something like the following (focus on posrot1 and posrot2):</p>
<p class=""> </p>
<p class="">/gate/source/addSource YourSourceName</p>
<p class="">/gate/source/YourSourceName/gps/shape Cylinder</p>
<p class="">/gate/source/YourSourceName/gps/type Volume</p>
<p class="">/gate/source/YourSourceName/gps/radius 0.5 cm</p>
<p class="">/gate/source/YourSourceName/gps/halfz 1.0 cm</p>
<p class="">/gate/source/YourSourceName/gps/centre 0. 0. 0. Cm</p>
<p class="">/gate/source/YourSourceName/gps/particle gamma</p>
<p class="">/gate/source/YourSourceName/gps/energy 140.5 keV</p>
<p class="">/gate/source/YourSourceName/setActivity 1E-3 Ci</p>
<p class="">/gate/source/YourSourceName/hpd/angtype iso</p>
<p class="">/gate/YourSourceName/gps/posrot1 0 0 1</p>
<p class="">/gate/YourSourceName/gps/posrot2 1 0 0 </p>
<p class=""> </p>
<p class="">-Justin</p></div>