<br><font size=2 face="sans-serif">Hi,</font>
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<br><font size=2 face="sans-serif">I think this is because you only have two rsectors defined in the cylindricalPET system.</font>
<br><font size=2 face="sans-serif">And for the coincidences sort, it will reject the coincidencs between neighbour rsectors.</font>
<br><font size=2 face="sans-serif">you should change the vaule by set:</font>
<br><font size=2 face="sans-serif">/gate/digitizer/Coincidences/minSectorDifference [number]</font>
<br><font size=2 face="sans-serif">The default [number] is 2. and for your system, the [number] should be 1.</font>
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<br><font size=2 face="sans-serif">See the manual 8.2.13. Coincidences sorter.</font>
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<br><font size=2 face="sans-serif">yuxuan</font>
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