<div dir="ltr"><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">Dear all, <br></font><font size="3">
<br></font><font size="3">
I’m trying to simulate Infinia Hawkeye SPECT system with LEHR collimator. When
I run the geometry check /geometry/test/recursive_test I get the following
error message:</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">GeomTestError: SolidProblem</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><span><font size="3"> </font></span><font size="3">Push
fails to fix geometry inconsistency</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><span><font size="3"> </font></span><span><font size="3"> </font></span><font size="3">Solid name=hole_solid</font></span></p>
<font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><span><font size="3"> </font></span><font size="3">Local
position=…..</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">GeomTest Error: Overshooting daughter
volume</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><span><font size="3">
</font></span><font size="3">The volume hole_phys[81780] appears to extend outside the mother volume
collimator_phys[0]</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><span><font size="3">
</font></span><font size="3">at the following points in global coordinates: (list truncated)</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><span><font size="3">
</font></span><font size="3">length (cm)</font><span><font size="3"> </font></span><font size="3">---------- start
position (cm) -----------</font><span><font size="3"> </font></span><font size="3">-----------
end position (cm) ------------</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><span><font size="3"> </font></span><font size="3">1.75</font><span><font size="3"> </font></span><font size="3">0</font><span><font size="3"> </font></span><font size="3">-20</font><span><font size="3"> </font></span><font size="3">24.3</font><span><font size="3"> </font></span><font size="3">1.75</font><span><font size="3"> </font></span><font size="3">-20</font><span><font size="3"> </font></span><font size="3">24.3</font></span></p>
<font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><span><font size="3"> </font></span><font size="3">0.0075</font><span><font size="3"> </font></span><font size="3">-1.61</font><span><font size="3"> </font></span><font size="3">-20.0075</font><span><font size="3"> </font></span><font size="3">24.3</font><span><font size="3"> </font></span><font size="3">-1.61</font><span><font size="3"> </font></span><font size="3">-20</font><span><font size="3"> </font></span><font size="3">24.3</font></span></p>
<font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><span><font size="3"> </font></span><font size="3">0.0075</font><span><font size="3"> </font></span><font size="3">-1.435</font><span><font size="3"> </font></span><font size="3">-20.0075</font><span><font size="3"> </font></span><font size="3">24.3</font><span><font size="3"> </font></span><font size="3">-1.435</font><span><font size="3"> </font></span><font size="3">-20</font><span><font size="3"> </font></span><font size="3">24.3</font></span></p>
<font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><span><font size="3"> </font></span><font size="3">0.0075</font><span><font size="3"> </font></span><font size="3">-1.26</font><span><font size="3"> </font></span><font size="3">-20.0075</font><span><font size="3"> </font></span><font size="3">24.3</font><span><font size="3"> </font></span><font size="3">-1.26</font><span><font size="3"> </font></span><font size="3">-20</font><span><font size="3"> </font></span><font size="3">24.3</font></span></p>
<font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><span><font size="3"> </font></span><font size="3">0.0075</font><span><font size="3"> </font></span><font size="3">-1.085</font><span><font size="3"> </font></span><font size="3">-20.0075</font><span><font size="3"> </font></span><font size="3">24.3</font><span><font size="3"> </font></span><font size="3">-1.085</font><span><font size="3"> </font></span><font size="3">-20</font><span><font size="3"> </font></span><font size="3">24.3</font></span></p>
<font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><span><font size="3">
</font></span><font size="3">……….</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">I’m sure that the daughter (hole) does
not extend outside the mother (collimator).</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">I’m worried about this error message because
when I try to validate my simulation by comparing the simulated with the
measured spectra I don’t find a good agreement: for instance the number of
detected counts in the simulation is too low and also in the simulated spectra
I can’t see</font><span><font size="3"> </font></span><font size="3">the x-ray lead peak.</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">If you know how to solve this problem,
please let me know. </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">Here is associated script for the
definition of LEHR collimator and the physics process.</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">Really thank you.</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">#####LEHR COLLIMATOR</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/SPECThead/daughters/name
collimator</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/SPECThead/daughters/insert box</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/collimator/geometry/setXLength 3.5
cm</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/collimator/geometry/setYLength 40.
cm </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/collimator/geometry/setZLength 54.
cm </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/collimator/placement/setTranslation</font><span><font size="3"> </font></span><font size="3">-3.075 0. </font></span><span style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">0. cm </font></span></p>
<font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/collimator/setMaterial Lead</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/collimator/daughters/name hole</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/collimator/daughters/insert
hexagone</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/hole/geometry/setHeight 3.5 cm</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/hole/geometry/setRadius
.075 cm </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/hole/placement/setRotationAxis 0 1
0</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/hole/placement/setRotationAngle 90
deg</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/hole/setMaterial Air</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/hole/repeaters/insert cubicArray</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/hole/cubicArray/setRepeatNumberX 1</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/hole/cubicArray/setRepeatNumberY
235 </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/hole/cubicArray/setRepeatNumberZ
183 </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/hole/cubicArray/setRepeatVector 0.
</font></span><span style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">0.17</font><span><font size="3"> </font></span><font size="3">0.294</font><span><font size="3">
</font></span><font size="3">cm </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/hole/repeaters/insert linear</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/hole/linear/setRepeatNumber 2</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/hole/linear/setRepeatVector
0.</font><span><font size="3"> </font></span><font size="3">.085</font><span><font size="3">
</font></span><font size="3">0.147103 cm</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">####PHYSICS PROCESS</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/addPhysicsList empenelope</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/addProcess PhotoElectric</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/processes/PhotoElectric/setModel
PenelopeModel</font><span><font size="3"> </font></span></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/addProcess Compton</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/processes/Compton/setModel
PenelopeModel</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/addProcess
RayleighScattering</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/processes/RayleighScattering/setModel
PenelopeModel</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/addProcess
ElectronIonisation</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/processes/ElectronIonisation/setModel
StandardModel e-</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/addProcess Bremsstrahlung</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/processes/Bremsstrahlung/setModel
StandardModel e-</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/addProcess
eMultipleScattering</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/processes/eMultipleScattering/setModel
Urban95Model e-</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/processList Enabled</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/processList Initialized</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3"> </font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/Electron/SetCutInRegion</font><span><font size="3"> </font></span><font size="3">world 1. cm</font></span></p>
<font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/Gamma/SetCutInRegion</font><span><font size="3"> </font></span><font size="3">world 0.001 cm</font></span></p>
<font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/processes/PhotoElectric/setDeltaRayCut
1 keV</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/processes/PhotoElectric/setXRayCut
1 keV</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0cm 0cm 10pt"><span style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">/gate/physics/displayCuts</font></span></p><font color="#000000" face="Times New Roman" size="3">
</font></div>