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<p class="MsoNormal">Dear All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I was trying to use a phase space file as the photon source in a PET simulation and encountered a problem. The phase space file was a .root file. When GATE started, I always got an error message,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Error in <TChain::SetBranchAddress>: unknown branch -> Weight<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have tried to include and exclude the branch of ‘Weight’ in the phase space files, but the error did not go away. I am using Gate v7.1.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can someone give me some advice? Any help will be appreciated. Thanks!<o:p></o:p></p>
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<p class="MsoNormal">Best,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Yuncheng Zhong<o:p></o:p></p>
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<p align="right" style="text-align:right"><span style="font-size:17pt;letter-spacing:-3px;font-family:"Helvetica","sans-serif";color:#0054A0;font-weight:bolder;">UT</span><span style="font-size:17pt;letter-spacing:-0px;font-family:"Helvetica","sans-serif";color:#0054A0;font-weight:bolder;">
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<p style="text-align:right"><span style="font-size:10pt;font-family:"Helvetica","sans-serif"; color:#666D70;">The future of medicine, today.</span></p>
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