Hi Stepan,<br><br>Since you are testing a 6 GeV run, I have never cook more than 10 files for this run period. <br>So, what you noticed for clas_61540.A14 must be also true for A15 and A16.<br><br>By the way, if you look to the sheet summary of the eg6 production runs that I sent you <br>
earlier (I put it again in attachment) you will find a comment about the DAQ crash on it. <br>Please for your convenience revise this file on you further test. The objective of generating <br>this file was to have a list of good runs and make a decision about some runs that I was <br>
suspicious about them in my comments. <br>I will appreciate your (you and others) feedback about this list.<br><br>Best regards,<br><br>Lamiaa<br><br clear="all">************************************************************<br>
* Lamiaa El Fassi email: <a href="mailto:elfassi@jlab.org">elfassi@jlab.org</a><br>* Research Associate @ Rutgers University <br>* Phone: (757) 269-7011 // Fax: (757) 269-5703 <br>
* Jefferson Lab., 12000 Jefferson Ave. <br>* Suite# 4, MS 12H3<br>* Newport News, VA. 23606<br>************************************************************<br>
<br><br><div class="gmail_quote">On Fri, Jan 21, 2011 at 3:51 PM, Stepan Stepanyan <<a href="mailto:stepanya@jlab.org">stepanya@jlab.org</a>> wrote:<br><blockquote class="gmail_quote">
Dear all,<br>
<br>
In doing my studies with pass1 outputs I noticed couple of problems (so far).<br>
These could be problems of cooking, it is possible that I am not using right<br>
stuff for it. But never the less I want to see if any one has any thoughts on these.<br>
<br>
Firs problem I encountered is in cooking of file clas_061540.A14. I run only 100K<br>
and in Ntuple I got strange events at last 15%. In the attached file <a href="http://r61540_14.ps">r61540_14.ps</a><br>
you will find thee graphs, showing event ID vs. momentum of the first particle<br>
in EVNT. As you can see at the end of 100K events I got tracks in the first row of<br>
EVNT with fixed momentum. It turns out most of them are positive particles (see<br>
second and third pages). Looking into output of user_ana, I can see that massages<br>
that tracking code prints out when number "ntr_link" exceeds max value stopped<br>
somewhere after 83293 events (attached file r61540_14.tiff). I looked in the logbook<br>
and seems like this run crushed at the end, but there are files A15 and A16 of this<br>
run and I do not know if we have seen problem with this files as well.<br>
<br>
Second problem I see is related with ICPB. Attached file <a href="http://ic_hits.ps">ic_hits.ps</a> shows distribution<br>
of relative energy of central crystal as a function of cluster energy from ICPB and<br>
ICHB. Clearly ICPB plot is wrong. Energy of clusters run above 7 GeV and central crystal<br>
has more than 100% of cluster energy, impossible. Plot from ICHB is normal, as one<br>
would expect. Some thing is wrong in the transition from ICHB to ICPB. Must be<br>
corrected.<br>
<br>
Finally I want to emphasize that looking into cooked data, running simple analysis<br>
are very important. We need to find and fix problems before pass1 cooking. Any<br>
inputs on above issues will be appreciated.<br>
<br>
Regards, Stepan<br>
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