<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body 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=""> Here are minutes for the High Intensity review preparations meeting this afternoon:</div><div class=""><br class=""></div><div class=""><a href="https://halldweb.jlab.org/wiki/index.php/GlueX_Level-3_Trigger_Meeting,_Apr_20,_2017" class="">https://halldweb.jlab.org/wiki/index.php/GlueX_Level-3_Trigger_Meeting,_Apr_20,_2017</a></div><div class=""><br class=""></div><div class=""><h1 style="background-image: none; background-color: rgb(255, 255, 255); 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; orphans: 2; widows: 2; background-position: initial initial; background-repeat: initial initial;" class=""><span class="mw-headline" id="Minutes">Minutes</span><span class="mw-editsection" style="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,_Apr_20,_2017&action=edit§ion=7" 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><div style="margin: 0.4em 0px 0.5em; line-height: 1.5em; font-family: sans-serif; font-size: 12.7px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255);" class="">Attendees: David L., Sergey F., Alex S., Eugene C.</div><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=); font-family: sans-serif; font-size: 12.7px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255);" class=""><li style="margin-bottom: 0.1em;" class="">We discussed the current status of the trigger rate and event size projections in order to catch Eugene up</li><li style="margin-bottom: 0.1em;" class="">There was consensus that with the existing readout hardware rate limitations and reduced event size, a L3 farm solution is no longer warranted. We will present a high intensity running solution at the review that does not require L3 farm.</li><li style="margin-bottom: 0.1em;" class="">There was some discussion on how to present the FCAL+BCAL+ST trigger.<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="">Without the ST in the trigger and using our Spring 2017 FCAL+BCAL thresholds we would be near (and possibly slightly over) the hardware limits for data readout when running 5 x 10<sup style="line-height: 1;" class="">7</sup>γ/s. This would leave no margin.</li><li style="margin-bottom: 0.1em;" class="">With the ST in the trigger the L1 rate is reduced by a factor of about 1.6</li><li style="margin-bottom: 0.1em;" class="">Eugene suggested we look at existing data for a channel that may be affected by an ST cut (e.g. γp -> ωp -> π<sup style="line-height: 1;" class="">o</sup>γp) and see what is thrown away if an ST is required</li></ul></li><li style="margin-bottom: 0.1em;" class="">Items needed for high intensity running that will need to be budgeted:<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="">10Gb switch for Tagger hall + up to 4 10Gb mezzanine cards for the tagger crates</li><li style="margin-bottom: 0.1em;" class="">Additional large raid disk</li><li style="margin-bottom: 0.1em;" class="">These and other online costs for next 3 years was put into spreadsheet on Mar. 10th and provided to CC<ul style="line-height: 1.5em; 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=""><a rel="nofollow" class="external free" href="https://docs.google.com/spreadsheets/d/1UxFy82k6vsh4ksqoCJ4mlyRuEAIcJoQBCOjEH3cz2_w/edit#gid=0" style="color: rgb(102, 51, 102); background-image: linear-gradient(transparent, transparent), url(data:image/svg+xml;base64,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); background-attachment: initial, initial; background-origin: initial, initial; background-clip: initial, initial; background-size: initial, initial; padding-right: 15px; background-position: 100% 50%; background-repeat: no-repeat;">https://docs.google.com/spreadsheets/d/1UxFy82k6vsh4ksqoCJ4mlyRuEAIcJoQBCOjEH3cz2_w/edit#gid=0</a></li></ul></li></ul></li></ul><h2 style="background-image: none; background-color: rgb(255, 255, 255); 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; orphans: 2; widows: 2; background-position: initial initial; background-repeat: initial initial;" class=""><span class="mw-headline" id="Action_Items">Action Items</span><span class="mw-editsection" style="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,_Apr_20,_2017&action=edit§ion=8" title="Edit section: Action Items" style="text-decoration: none; color: rgb(90, 54, 150); background: none;" class="">edit</a><span class="mw-editsection-bracket">]</span></span></h2><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=); font-family: sans-serif; font-size: 12.7px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255);" class=""><li style="margin-bottom: 0.1em;" class="">Compare most recent data volume estimate provided to CC to one using a 2GB/s data rate. Discuss with CC to see if this causes any concern (David)</li><li style="margin-bottom: 0.1em;" class="">Look at γp -> ωp -> π<sup style="line-height: 1;" class="">o</sup>γp channel and see what is discarded when ST hit is required. (Alex, David)</li><li style="margin-bottom: 0.1em;" class="">Start outlining talk and gathering slides so we can review at next meeting (David)</li></ul><h2 style="background-image: none; background-color: rgb(255, 255, 255); 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; orphans: 2; widows: 2; background-position: initial initial; background-repeat: initial initial;" class=""><span class="mw-headline" id="Next_Meeting">Next Meeting</span><span class="mw-editsection" style="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,_Apr_20,_2017&action=edit§ion=9" title="Edit section: Next Meeting" style="text-decoration: none; color: rgb(90, 54, 150); background: none;" class="">edit</a><span class="mw-editsection-bracket">]</span></span></h2><div style="margin: 0.4em 0px 0.5em; line-height: 1.5em; font-family: sans-serif; font-size: 12.7px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255);" class="">We will meet again on Thursday next week at 3pm. Room A110 is reserved.</div></div></body></html>