<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><br class=""><div class=""><meta http-equiv="Content-Type" content="text/html charset=us-ascii" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi All,<div class=""><br class=""></div><div class=""> Minutes of the L3 meeting last Friday are now posted at:</div><div class=""><br class=""></div><div class=""><a href="https://halldweb.jlab.org/wiki/index.php/GlueX_Level-3_Trigger_Meeting,_Jul_8,_2016" class="">https://halldweb.jlab.org/wiki/index.php/GlueX_Level-3_Trigger_Meeting,_Jul_8,_2016</a></div><div class=""><br class=""></div><div class="">Regards,</div><div class="">-David</div><div class=""><br class=""></div><div class=""><h1 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 23.876px; font-family: sans-serif; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;" class=""><span class="mw-headline" id="Minutes">Minutes</span><span class="mw-editsection" style="-webkit-user-select: none; font-size: small; margin-left: 1em; vertical-align: baseline; line-height: 1em; display: inline-block;"><span class="mw-editsection-bracket">[</span><a href="https://halldweb.jlab.org/wiki/index.php?title=GlueX_Level-3_Trigger_Meeting,_Jul_8,_2016&action=edit§ion=6" title="Edit section: Minutes" style="text-decoration: none; color: rgb(90, 54, 150); background: none;" class="">edit</a><span class="mw-editsection-bracket">]</span></span></h1><h1 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 23.876px; font-family: sans-serif; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;" class=""><div style="margin: 0.4em 0px 0.5em; line-height: 19.05px; font-size: 12.7px; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal;" class="">Attendees: David L. (chair), Cris F., Simon T., Adesh S., Curtis M., Mike W., Justin S.</div></h1><h2 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 19.05px; font-family: sans-serif; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;" class=""><span class="mw-headline" id="Announcements">Announcements</span><span class="mw-editsection" style="-webkit-user-select: none; font-size: small; margin-left: 1em; vertical-align: baseline; line-height: 1em; display: inline-block;"><span class="mw-editsection-bracket">[</span><a href="https://halldweb.jlab.org/wiki/index.php?title=GlueX_Level-3_Trigger_Meeting,_Jul_8,_2016&action=edit§ion=7" title="Edit section: Announcements" style="text-decoration: none; color: rgb(90, 54, 150); background: none;" class="">edit</a><span class="mw-editsection-bracket">]</span></span></h2><h1 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 23.876px; font-family: sans-serif; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;" class=""><ul style="line-height: 19.05px; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url(data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=); font-size: 12.7px; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal;" class=""><li style="margin-bottom: 0.1em;" class="">Meeting time is moved to 13:00 every other Friday to alternate with DIRC meetings</li></ul></h1><h2 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 19.05px; font-family: sans-serif; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;" class=""><span class="mw-headline" id="Benchmarking_Status">Benchmarking Status</span><span class="mw-editsection" style="-webkit-user-select: none; font-size: small; margin-left: 1em; vertical-align: baseline; line-height: 1em; display: inline-block;"><span class="mw-editsection-bracket">[</span><a href="https://halldweb.jlab.org/wiki/index.php?title=GlueX_Level-3_Trigger_Meeting,_Jul_8,_2016&action=edit§ion=8" title="Edit section: Benchmarking Status" style="text-decoration: none; color: rgb(90, 54, 150); background: none;" class="">edit</a><span class="mw-editsection-bracket">]</span></span></h2><h1 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 23.876px; font-family: sans-serif; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;" class=""><ul style="line-height: 19.05px; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url(data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=); font-size: 12.7px; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal;" class=""><li style="margin-bottom: 0.1em;" class="">Cristiano continues to work on benchmarking reconstruction algorithms using janadot</li><li style="margin-bottom: 0.1em;" class="">Looking at real data run 10913 and simulated data from both Adesh's low-threshold data set and the standard "sim1" 3GeV thresh data set</li><li style="margin-bottom: 0.1em;" class="">Previously saw large discrepancy between real and simulated data but is now seeing better agreement due to:<ul style="line-height: 1.5em; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url("data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=");" class=""><li style="margin-bottom: 0.1em;" class="">Newer software (unsure if this was important factor)</li><li style="margin-bottom: 0.1em;" class="">Better job skimming only physics events</li></ul></li><li style="margin-bottom: 0.1em;" class="">MC data has more tracks/showers per event than real data</li><li style="margin-bottom: 0.1em;" class="">Currently the simulated data does not have a L1 trigger emulation applied<ul style="line-height: 1.5em; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url("data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=");" class=""><li style="margin-bottom: 0.1em;" class="">Alex S. is working on a L1 trigger emulator using configuration info. recorded in RCDB</li></ul></li><li style="margin-bottom: 0.1em;" class="">Justin suggested turning off all but pion mass hypothesis for tracking. That will make it faster and we are unlikely to need multiple mass hypotheses to make L3 decision</li><li style="margin-bottom: 0.1em;" class="">Mike suggested we could improve tracking speed for L3 decisions if we dropped tracks that look to be low momentum early on (this was done in LHCb to significant benefit)</li><li style="margin-bottom: 0.1em;" class="">Cris will look at comparing DTrackCandidate results to DTrackTimeBased since the candidate momentum would be the natural place to make this cut</li></ul></h1><h2 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 19.05px; font-family: sans-serif; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;" class=""><span class="mw-headline" id="Simulation_Status">Simulation Status</span><span class="mw-editsection" style="-webkit-user-select: none; font-size: small; margin-left: 1em; vertical-align: baseline; line-height: 1em; display: inline-block;"><span class="mw-editsection-bracket">[</span><a href="https://halldweb.jlab.org/wiki/index.php?title=GlueX_Level-3_Trigger_Meeting,_Jul_8,_2016&action=edit§ion=9" title="Edit section: Simulation Status" style="text-decoration: none; color: rgb(90, 54, 150); background: none;" class="">edit</a><span class="mw-editsection-bracket">]</span></span></h2><h1 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 23.876px; font-family: sans-serif; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;" class=""><ul style="line-height: 19.05px; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url(data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=); font-size: 12.7px; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal;" class=""><li style="margin-bottom: 0.1em;" class="">Simulated data set is now available</li><li style="margin-bottom: 0.1em;" class="">Noticed MIP peak in FCAL has more energy for real data that for MC</li><li style="margin-bottom: 0.1em;" class="">Justin noted that there may be a trigger bias with the real data<ul style="line-height: 1.5em; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url("data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=");" class=""><li style="margin-bottom: 0.1em;" class="">This can be investigated by looking at events where the trigger condition is met by a different part of the detector</li></ul></li></ul></h1><h2 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 19.05px; font-family: sans-serif; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;" class=""><span class="mw-headline" id="Resurrecting_BDT_for_simulation">Resurrecting BDT for simulation</span><span class="mw-editsection" style="-webkit-user-select: none; font-size: small; margin-left: 1em; vertical-align: baseline; line-height: 1em; display: inline-block;"><span class="mw-editsection-bracket">[</span><a href="https://halldweb.jlab.org/wiki/index.php?title=GlueX_Level-3_Trigger_Meeting,_Jul_8,_2016&action=edit§ion=10" title="Edit section: Resurrecting BDT for simulation" style="text-decoration: none; color: rgb(90, 54, 150); background: none;" class="">edit</a><span class="mw-editsection-bracket">]</span></span></h2><h1 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 23.876px; font-family: sans-serif; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;" class=""><ul style="line-height: 19.05px; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url(data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=); font-size: 12.7px; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal;" class=""><li style="margin-bottom: 0.1em;" class="">Justin found old code from few years ago when initial L3 BDT studies were done and applied it to data simulated with Spring 2016 conditions</li><li style="margin-bottom: 0.1em;" class="">Performance was similar to what was seen 2 years ago</li><li style="margin-bottom: 0.1em;" class="">L3 trigger efficiency at 20kHz is ~93.5%</li><li style="margin-bottom: 0.1em;" class="">For 99% L3 trigger efficiency, we'll reject about 50-60% of background with the present scheme</li></ul></h1><h2 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 19.05px; font-family: sans-serif; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;" class=""><span class="mw-headline" id="Classifying_Spring_2016_data">Classifying Spring 2016 data</span><span class="mw-editsection" style="-webkit-user-select: none; font-size: small; margin-left: 1em; vertical-align: baseline; line-height: 1em; display: inline-block;"><span class="mw-editsection-bracket">[</span><a href="https://halldweb.jlab.org/wiki/index.php?title=GlueX_Level-3_Trigger_Meeting,_Jul_8,_2016&action=edit§ion=11" title="Edit section: Classifying Spring 2016 data" style="text-decoration: none; color: rgb(90, 54, 150); background: none;" class="">edit</a><span class="mw-editsection-bracket">]</span></span></h2><h1 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 23.876px; font-family: sans-serif; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;" class=""><ul style="line-height: 19.05px; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url(data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=); font-size: 12.7px; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal;" class=""><li style="margin-bottom: 0.1em;" class="">David showed some results from trying to categorize events as "good" or "bad" from 2 runs from the Spring 2016 data set<ul style="line-height: 1.5em; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url("data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=");" class=""><li style="margin-bottom: 0.1em;" class="">run 11667=1345A and run 11511=1200A</li><li style="margin-bottom: 0.1em;" class="">Approximately 1/4 of the physics events satisfied the "good" condition of >4GeV reconstructable energy in the event</li></ul></li><li style="margin-bottom: 0.1em;" class="">Following up on a suggestion from Eugene, some attempt was also made to identify what fraction of L1 events were due to a small number of clusters near the beamline in the FCAL<ul style="line-height: 1.5em; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url("data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=");" class=""><li style="margin-bottom: 0.1em;" class="">These would be characteristic of EM events which are of less interest</li><li style="margin-bottom: 0.1em;" class="">An estimated 10% of L1 events met this condition</li><li style="margin-bottom: 0.1em;" class="">Excluding first 2 rings of FCAL blocks from trigger seems to have effectively suppressed many of the EM events</li></ul></li><li style="margin-bottom: 0.1em;" class="">The "good" classification was used to train a BDT using lower-level event information as variables<ul style="line-height: 1.5em; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url("data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=");" class=""><li style="margin-bottom: 0.1em;" class="">Retaining ~99% of events would lead to rejecting ~35% of background</li><li style="margin-bottom: 0.1em;" class="">Higher level reconstruction variables will be added to see how this might be improved</li></ul></li></ul><div class=""><br class=""></div></h1></div></div></div></div><br class=""></body></html>