Hi Evaristo,<br><br>It looks like efficiency is higher with this mistake fixed. See attached file. <br><br>Vahe<br><br><div class="gmail_quote">On Fri, May 20, 2011 at 6:08 AM, Evaristo Cisbani <span dir="ltr"><<a href="mailto:evaristo.cisbani@iss.infn.it">evaristo.cisbani@iss.infn.it</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Dear All,<br>
<br>
Bogdan found a bug in the digitization: the background signal is not<br>
sampled correctly.<br>
<br>
The error is in the transformation of time coordinate, I used for<br>
sampling, that is:<br>
<br>
tT is the trigger time (that I assume 0)<br>
t0 is the first sampling (e.g. -100 ns)<br>
tH is the hit time (from -400 ns to 100 ns for background, around 0 for<br>
signal)<br>
<br>
The sampling time I used was: t=t0+tH, while the correct one is: t=t0-tH<br>
This affects the background but not the signal (being tH ~ 0).<br>
<br>
Unfortunately this may have impact on the results.<br>
<br>
I fixed the bug and ran digitization again for g20 and g21. The new data<br>
are posted in the usual directory (wrong data removed).<br>
<br>
<a href="http://www.iss.infn.it/cisbani/atmp/gemc/production/" target="_blank">http://www.iss.infn.it/cisbani/atmp/gemc/production/</a><br>
<br>
I apologize for the mistake!<br>
<br>
Evaristo<br>
<font color="#888888"><br>
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Italy<br>
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<br></blockquote></div><br>