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<p>Please, in my simulation. I modelled the anode(rectangular geometry with thickness 1mm and cathode(source type: plane and shape: circle, source energy: monoenergetic electron(120keV)), filters(aluminium and copper), all according to the specification of
our x-ray manual. I was able to generate an x-ray energy spectrum from this setup. I used both Penelope and emstandard_opt3 which apparently gives similar results.</p>
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<p>Secondly, I used the same parameters in SpekCalc program. A program for calculating x-ray energy spectrum. I, therefore, compared the two spectra as a way of validating my spectrum from GATE. This gives the results of the image attached. If you need more
info please let me know. Thanks</p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> simon.rit@gmail.com <simon.rit@gmail.com> on behalf of Simon Rit <simon.rit@creatis.insa-lyon.fr><br>
<b>Sent:</b> Wednesday, 11 October 2017 7:38:45 p.m.<br>
<b>To:</b> Emmanuel Marfo<br>
<b>Cc:</b> gate-users@lists.opengatecollaboration.org<br>
<b>Subject:</b> Re: [Gate-users] SpekCalc vs GATE x-ray energy spectrum</font>
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<div>Hi,<br>
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I am not sure I understand what we are looking at. What was the x-ray source in your Gate simulation? I think it would help to have the full simulation.<br>
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Best regards,<br>
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Simon<br>
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<div class="gmail_quote">On Wed, Oct 11, 2017 at 3:47 AM, Emmanuel Marfo <span dir="ltr">
<<a href="mailto:emmanuel.marfo@postgrad.otago.ac.nz" target="_blank">emmanuel.marfo@postgrad.otago.ac.nz</a>></span> wrote:<br>
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<p>Hi GATE users,</p>
<p>Find attached file 'SpekCalc vs GATE x-ray energy spectrum' which compares the two spectrums. My problem is the GATE characteristics spectrum is shifted to the right a bit when compared to the characteristics energy spectrum from SpekCalc. Please, I want
to know how I can make it align with that of spekcalc. I used the energyspectrum actor definition below</p>
<p></p>
<div>### E N E R G Y S P E C T R U M ######</div>
<div>##############################<wbr>########</div>
<div>/gate/actor/addActor EnergySpectrumActor espectrum</div>
<div>/gate/actor/espectrum/attachTo phantom</div>
<div>/gate/actor/espectrum/save Desktop/PHDthesisGATE/<wbr>MARFO2017/ModellingX-raytube/<wbr>XraytubeCU/output/<wbr>cylinderespectrum.root</div>
<div>/gate/actor/espectrum/<wbr>addFilter particleFilter</div>
<div>/gate/actor/espectrum/<wbr>particleFilter/addParticle gamma</div>
<div>/gate/actor/espectrum/<wbr>energySpectrum/setEmin 0 eV</div>
<div>/gate/actor/espectrum/<wbr>energySpectrum/setEmax 0.12 MeV</div>
<div>/gate/actor/espectrum/<wbr>energySpectrum/setNumberOfBins 120</div>
<div>/gate/actor/espectrum/<wbr>energyLossHisto/setEmin 0 eV</div>
<div>/gate/actor/espectrum/<wbr>energyLossHisto/setEmax 0.12 MeV</div>
<div>/gate/actor/espectrum/<wbr>energyLossHisto/<wbr>setNumberOfBins 120</div>
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Thanks
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<p>Best regards,</p>
<p>Emmanuel Marfo</p>
<p>University of Otago</p>
<p>Student </p>
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