<div dir="ltr"><div>Hi Norman,</div><div><br></div><div>The trigger supervisor (TS) provides two words of trigger bits, documented as the "prescaled word" and the "ext word".</div><div>The trigger bit you have referred to thus far are all in the "prescaled word", so the pulser trigger is bit 15 of the prescaled word.</div><div>The random trigger bit is bit 15 of the "ext word".</div><div><br></div><div>Cheers,</div><div>Cameron<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Nov 18, 2021 at 12:43 PM Graf, Norman A. <<a href="mailto:ngraf@slac.stanford.edu">ngraf@slac.stanford.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">Hi Cameron,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">Thank you for your request.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">Pulser corresponds to trigger #15.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">Which trigger is the random trigger?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">Norman<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:11pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11pt;font-family:"Calibri",sans-serif"> Cameron Bravo <<a href="mailto:cbravo135@gmail.com" target="_blank">cbravo135@gmail.com</a>>
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<b>Sent:</b> Thursday, November 18, 2021 12:35 PM<br>
<b>To:</b> Graf, Norman A. <<a href="mailto:ngraf@slac.stanford.edu" target="_blank">ngraf@slac.stanford.edu</a>><br>
<b>Cc:</b> HPS <<a href="mailto:Hps@jlab.org" target="_blank">Hps@jlab.org</a>><br>
<b>Subject:</b> Re: [Hps] [EXTERNAL] 2021 Event Skimming<u></u><u></u></span></p>
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<p class="MsoNormal">Dear Norman,<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">A reminder that we also agreed during the collaboration meeting to include both the random trigger and pulser trigger bits in this skim.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Thanks,<u></u><u></u></p>
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<p class="MsoNormal">Cameron<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">On Thu, Nov 18, 2021 at 12:25 PM Graf, Norman A. <<a href="mailto:ngraf@slac.stanford.edu" target="_blank">ngraf@slac.stanford.edu</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal">Dear Colleagues,<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">As we discussed at the collaboration meeting, we would like to start skimming selected events from the 2021 run based on their triggers. Since this will involve staging roughly
1PB of data and processing all the files we would like to include all the triggers that we envision being needed for calibration or other purposes, while still keeping the resulting skimmed files to a reasonably small fraction of the data. We currently plan
to skim the following triggers:<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">00 Moller Top<u></u><u></u></p>
<p class="MsoNormal">01 Moller PDE Top<u></u><u></u></p>
<p class="MsoNormal">04 Moller Bottom<u></u><u></u></p>
<p class="MsoNormal">05 Moller PDE Bottom<u></u><u></u></p>
<p class="MsoNormal">09 Moller pair<u></u><u></u></p>
<p class="MsoNormal">11 Pair-3 (mu+mu-)<u></u><u></u></p>
<p class="MsoNormal">18 FEE Top<u></u><u></u></p>
<p class="MsoNormal">19 FEE Bottom<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">This is expected to be roughly 5% of the data and will be used primarily for calibration purposes.<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Please let us know right away if a trigger that you need is being overlooked in this list as we would like to begin this process as soon as possible.<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">For reference, here is a screenshot from one of our later production runs at 3.7GeV:<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"><a href="https://logbooks.jlab.org/files/styles/plentybig/public/2021/11/3935946/clonsl1_20211102_100806.gif" target="_blank">https://logbooks.jlab.org/files/styles/plentybig/public/2021/11/3935946/clonsl1_20211102_100806.gif</a><u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Thank you,<u></u><u></u></p>
<p class="MsoNormal">Norman<u></u><u></u></p>
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<p class="MsoNormal">_______________________________________________<br>
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