<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div dir="ltr" id="yui_3_16_0_1_1413390509344_12155"></div><div style="" class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8848">The
bremsstrahlung should be specified in the physics section by
"/gate/physics/processes/bremsstrahlung/...". But I guess you mean you
want to define a continuous spectrum (bremsstrahlung spectrum) for your
source. So you can use of a "User" or "Arb" type of gps energy as below:</div><div style="" class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8773"><br style="" class="" clear="none"></div><div style="" class="" dir="ltr" id="yiv6618289269yui_3_16_0_1_1413390509344_8772">
</div><div class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8771" style=""><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style="">/gate/source/mysource/gps/particle
gamma<br class="" style="" clear="none">
/gate/source/</span><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style=""><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style="">mysource</span>/gps/energytype User<br class="" style="" clear="none">
/gate/source/</span><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style=""><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style="">mysource</span>/gps/histname energy<br class="" style="" clear="none">
/gate/source/</span><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style=""><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style="">mysource</span>/gps/emin 1.00 keV<br class="" style="" clear="none">
/gate/source/</span><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style=""><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style="">mysource</span>/gps/emax 35.00 keV<br class="" style="" clear="none">
/gate/source/</span><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style=""><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style="">mysource</span>/gps/histpoint 0.001<span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8847" style="">
</span>0.<br class="" style="" clear="none">
/gate/source/</span><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style=""><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style="">mysource</span>/gps/histpoint 0.0015<span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8846" style="">
</span>0.<br class="" style="" clear="none">
/gate/source/</span><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style=""><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style="">mysource</span>/gps/histpoint 0.0020<span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8879" style="">
</span>0.2776<br class="" style="" clear="none">
</span><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style=""></span></div><div class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8845" style=""><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style="">.</span></div><div class="" id="yiv6618289269yui_3_16_0_1_1413390509344_9300" style=""><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style="">.</span></div><div class="" id="yiv6618289269yui_3_16_0_1_1413390509344_9299" style=""><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style="">.<br style="" class="" clear="none"></span></div><div class="" dir="ltr" id="yiv6618289269yui_3_16_0_1_1413390509344_9048" style="">
</div><div class="" id="yiv6618289269yui_3_16_0_1_1413390509344_9129" style=""><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_9128" style="">/gate/source/Xtube/gps/histpoint
0.0350<span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_9645" style=""> </span>12960<br class="" style="" clear="none">
</span></div>
<span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style=""></span><div class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8849" style=""><br style="" class="" clear="none"><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style=""></span></div><div class="" dir="ltr" id="yiv6618289269yui_3_16_0_1_1413390509344_8850" style=""><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style="">you
should go on with completing all your user-defined spectrum histogram.
you can refer to Gate benchmarks or examples (CT benchmark) as well as
the Gate user guide (section: defining a source/defining energy type).</span></div><div class="" dir="ltr" id="yiv6618289269yui_3_16_0_1_1413390509344_9301" style=""><br style="" class="" clear="none"><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style=""></span></div><div class="" dir="ltr" id="yiv6618289269yui_3_16_0_1_1413390509344_9647" style=""><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style="">Good luck</span></div><span class="" id="yiv6618289269yui_3_16_0_1_1413390509344_8770" style="">Soman</span> <div class="qtdSeparateBR"><br><br></div><div style="display: block;" class="yahoo_quoted"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"> <font size="2" face="Arial"> On Wednesday, October 15, 2014 4:26 PM, Nada Fakhoury <nfachour@physics.auth.gr> wrote:<br> </font> </div> <br><br> <div class="y_msg_container"><br>Dear all,<br><br>I am quite new at using Gate, so I have many questions, but I will <br>trouble you today with just the one.<br><br>I am trying to simulate a Linac beam, so as a first step I am trying <br>to approach it with the gps commands.<br>So I am wondering, does Gate support the bremsstrahlung command?<br><br>I tried defining it as<br><br>/gate/source/mybeam/gps/particle gamma<br>/gate/source/mybeam/gps/ene/type Brem<br>/gate/source/mybeam/gps/ene/min 1 eV<br>/gate/source/mybeam/gps/ene/max 6 MeV<br><br>for starters, but I am getting a repeated error saying<br><br>*****EXPMIN=0. Choose different E's or Temp<br>*****EXPMAX=0. Choose different E's or Temp<br><br><br>I tried defining my source as done in the examples and the RT <br>benchmark, but I get a dose distribution that seems way off... ( <br><a href="https://www.dropbox.com/s/hd6da9lhapn5cju/Screenshot%20from%202014-10-11%2017%3A40%3A14.png?dl=0" target="_blank">https://www.dropbox.com/s/hd6da9lhapn5cju/Screenshot%20from%202014-10-11%2017%3A40%3A14.png?dl=0 </a> <br>)<br><br><br>Thank you in advance,<br><br>Nada.<br><br><br><br><br>_______________________________________________<br>Gate-users mailing list<br><a ymailto="mailto:Gate-users@lists.opengatecollaboration.org" href="mailto:Gate-users@lists.opengatecollaboration.org">Gate-users@lists.opengatecollaboration.org</a><br><a href="http://lists.opengatecollaboration.org/mailman/listinfo/gate-users" target="_blank">http://lists.opengatecollaboration.org/mailman/listinfo/gate-users</a><br><br><br></div> </div> </div> </div> </div></body></html>