On Thu, Mar 4, 2010 at 10:16 AM, Brad Sawatzky <<a href="mailto:brads@jlab.org">brads@jlab.org</a>>
wrote:<br><blockquote class="gmail_quote">
I assume you're referring to the second band in the S1 time average at<br>
67ns. That is usually indicates that you're histogramming two different<div class="im"><br>
trigger types: ie. T3, T4. Double check that your trigger cut is doing<br>
what you think it's doing.<br></div></blockquote><br>Yeah -- that's
the band I'm talking about... These are the cuts I use:<br><br>
//one track from the target<br> cut0 =
Form("(L.tr.n==1)");<br>
//trigger cuts<br> cut0 +=
Form("&&(DL.edtpl==0)&&((DL.<div>evtypebits&(1<<3))==(1<<3))");<br><br>I've
always used this trigger cut, and I haven't seen any structure that
looked 'odd' until now... For comparison, here's a comparison of run
20263 (p = 1.42 GeV, 5-pass) and run 20207 (p = 1.70 GeV, 5-pass)...
strange. Notice how the band becomes more prominent at higher p.<br>
<br></div><br clear="all"><br>-- <br>-----------------------------------------------------------<br>David Flay<br>Physics Department<br>Temple University<br>Philadelphia, PA 19122 <br><br>office: Barton Hall, BA319<br>phone: (215) 204-1331<br>
<br>e-mail: <a href="mailto:flay@jlab.org">flay@jlab.org</a> <br> <a href="mailto:flay@temple.edu">flay@temple.edu</a><br><br>website: <a href="http://www.jlab.org/~flay">http://www.jlab.org/~flay</a><br> <a href="http://quarks.temple.edu">http://quarks.temple.edu</a><br>
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