Hello Gate Users.<br><br><div>Was wondering if you have set up sources using ions in Gate. I am
trying to verify that a source with energy type Fluor18 produces the
same output (dose) for sources defined with ions. Here is the my set
up. I ran the sim with the particle version and got some dose info then
ran it again with ion version and I got zeros. Only when I added
"/gate/source/sourceF18/gps/particle e+" to the ion version did i
get some dose info. But that dose info did NOT match the dose info for
the particle type. Any ideas? See code below..</div>
<div><br></div><div>##############</div><div># particle version</div><div>##############</div><div>/gate/source/addSource sourceF18</div><div>/gate/source/sourceF18/gps/particle e+</div><div>
/gate/source/sourceF18/gps/energytype Fluor18</div><div>/gate/source/sourceF18/setForcedUnstableFlag true</div><div><br></div><div>/gate/source/sourceF18/setForcedHalfLife 6586. s </div><div>/gate/source/sourceF18/setActivity 7400000 Bq</div>
<div>/gate/source/sourceF18/gps/type Volume </div><div>/gate/source/sourceF18/gps/shape Sphere </div><div>/gate/source/sourceF18/gps/radius 0.62035 cm</div><div>/gate/source/sourceF18/gps/centre 0 0 0 cm </div>
<div>/gate/source/sourceF18/attachTo tumor</div><div>/gate/source/sourceF18/gps/ang/type iso</div><div><br></div><div><br></div><div><br></div><div>##############</div><div><div># ion version</div><div>
##############</div><div>/gate/source/addSource sourceF18</div><div>/gate/source/sourceF18/gps/particle ion </div><div>/gate/source/sourceF18/gps/ion 9 18 0 0 </div><div>/gate/source/sourceF18/gps/energytype Mono</div>
<div>/gate/source/sourceF18/gps/monoenergy 0. keV</div><div> </div><div>/gate/source/sourceF18/setForcedUnstableFlag true </div><div>/gate/source/sourceF18/setForcedHalfLife 6586 s</div><div>/gate/source/sourceF18/setActivity 7400000 Bq</div>
<div>/gate/source/sourceF18/gps/type Volume </div><div>/gate/source/sourceF18/gps/shape Sphere </div><div>/gate/source/sourceF18/gps/radius 0.62035 cm</div><div>/gate/source/sourceF18/gps/centre 0 0 0 cm </div>
<div>/gate/source/sourceF18/attachTo tumor</div><div>/gate/source/sourceF18/gps/ang/type iso </div></div><div># /gate/source/sourceF18/gps/particle e+</div><div><br></div><div><br></div><div>
<div>##############</div><div><div># physics (same physics for both)</div><div>##############</div></div></div><div><div>/gate/physics/addProcess RadioactiveDecay</div><div><br></div><div>/gate/physics/addProcess PhotoElectric</div>
<div>/gate/physics/processes/PhotoElectric/setModel StandardModel</div><div><br></div><div>/gate/physics/addProcess Compton</div><div>/gate/physics/processes/Compton/setModel StandardModel</div><div><br></div><div>/gate/physics/addProcess GammaConversion</div>
<div>/gate/physics/processes/GammaConversion/setModel StandardModel</div><div><br></div><div>/gate/physics/addProcess ElectronIonisation</div><div>/gate/physics/processes/ElectronIonisation/setModel StandardModel e-</div>
<div>/gate/physics/processes/ElectronIonisation/setModel StandardModel e+</div><div>/gate/physics/processes/ElectronIonisation/setStepFunction e+ 0.2 0.1 mm</div><div>/gate/physics/processes/ElectronIonisation/setStepFunction e- 0.2 0.1 mm</div>
<div><br></div><div>/gate/physics/addProcess Bremsstrahlung</div><div>/gate/physics/processes/Bremsstrahlung/setModel StandardModel e-</div><div>/gate/physics/processes/Bremsstrahlung/setModel StandardModel e+</div><div>
<br>
</div><div>/gate/physics/addProcess PositronAnnihilation</div><div><br></div><div>/gate/physics/addProcess MultipleScattering</div><div>/gate/physics/processes/MultipleScattering/setGeometricalStepLimiterType e- distanceToBoundary</div>
<div>/gate/physics/processes/MultipleScattering/setGeometricalStepLimiterType e+ distanceToBoundary</div></div><br clear="all"><br>-- <br>Karr<br>
<br>