<div dir="ltr">Hello everyone,<div><br></div><div>I'm following the user's guide</div><div><a href="http://wiki.opengatecollaboration.org/index.php/Users_Guide_V6.2:Defining_a_system">http://wiki.opengatecollaboration.org/index.php/Users_Guide_V6.2:Defining_a_system</a><br clear="all">
<div style>trying to model a parallel hole collimator.</div><div style><br></div><div style>The guide shows the following example:</div><div style><pre style="padding:1em;border:1px dashed rgb(47,111,171);color:rgb(0,0,0);background-color:rgb(249,249,249);line-height:1.1em">
/gate/SPECThead/daughters/name colli 
 
#specify that the parallel beam collimator setup must be used
/gate/SPECThead/daughters/insert parallelbeam 
 
#set the collimator material
/gate/colli/setMaterialName Lead
 
#set the collimator dimensions
/gate/colli/geometry/setDimensionX 70 cm
/gate/colli/geometry/setDimensionY 80 cm
 
#set the thickness of the collimator
/gate/colli/geometry/setHeight 3 cm
 
#specify the hole radius
/gate/colli/geometry/setInnerRadius 0.5 cm
 
#set the septal thickness to the required distance between the holes
/gate/colli/geometry/setSeptalThickness 0.2 cm 
/gate/colli/placement/alignToX
/gate/colli/placement/setRotationAxis 0 0 1
/gate/colli/placement/setRotationAngle -90 deg</pre></div><div><br></div><div style>I'm getting a problem as follows:</div><div style><br></div><div style><div>/opt/simulation/gate_v6.2/source/geometry/src/GateVVolume.cc (l.179): The material of the volume side hole 1 is not defined.</div>
<div><br></div></div><div style>Anyone knows how to fix this?</div><div style><br></div><div style>Thanks,</div><div><br></div>-- <br>Carlos F Uribe

</div></div>