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<div><span>Hi all, </span></div>
<div><span>I am new to GATE and I meet with some problems when dealing with the setup of parameters. I looked up to the </span><span style="line-height: 22.4px;">online </span><span style="line-height: 1.6;">forum but I did not find a solution. If anyone can
help me, I really appreciate it. My GATE version is 8.0. GEANT4 version is 10.3.3 The problems are</span></div>
<div><span>1, there always is a warning, which says "Event is earlier than earliest event in coincidence presort buffer. Consider using larger buffer." Why would this happen and which parameter I should change to use larger buffer?</span></div>
<div><span>2, How can I set the policy of dealing multiple coincidence? The one in the user guide /gate/digitizer/Coincidence/multiPolicy takeAllGoods will prompt errors.</span></div>
<div><span>3, How can I set the stop time of the source? For example, if I want to use a source which just lasts for 0s to 1.0s but the data record lasts from 0.0s to 100s.</span></div>
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<div><span style="font-family: Times New Roman;"><font face="
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">Best Regards</font></span></div>
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<div><span style="font-family: Times New Roman;"><font face="
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">Youfang</font></span></div>
<div><span style="font-family: Times New Roman;"><font face="
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">Department of Physics, University of Texas Arlington</font></span></div>
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