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<span style="font-size: 14px;" class="">Dear all,</span>
<div class=""><span style="font-size: 14px;" class=""><br class="">
</span></div>
<div class="">
<div class=""><span style="font-size: 14px;" class="">Our third meeting to discuss CLAS12 subsystem performance at twice the designed luminosity will take place on Friday, February 22 at 1:30 pm EST. </span><span style="font-size: 14px;" class="">At this meeting,
we will discuss CVT (SVT and BMT). </span></div>
<div class=""><span style="font-size: 14px;" class=""><br class="">
</span></div>
<div class=""><span style="font-size: 14px;" class="">The meeting is on your calendars, we have F224-225 for in-person attendance.</span></div>
</div>
<div class=""><span style="font-size: 14px;" class=""><br class="">
</span></div>
<div class=""><span style="font-size: 14px;" class="">For those who wants to connect remotely, the zoom info is following (yje same as on Friday):</span></div>
<div class=""><font color="#0956b5" face="Almaden Sans, Helvetica, Arial" class=""><span style="box-sizing: border-box; font-size: 14px; letter-spacing: 0.41999998688697815px;" class=""><a href="https://jlab-org.zoomgov.com/j/1607174363?pwd=SHAwcXBjYmxwMEEwS04valZ4OHJGQT09" class="">https://jlab-org.zoomgov.com/j/1607174363?pwd=SHAwcXBjYmxwMEEwS04valZ4OHJGQT09</a></span></font></div>
<div class="">ID: <span style="caret-color: rgb(35, 35, 51); color: rgb(35, 35, 51); font-family: "Almaden Sans", Helvetica, Arial; font-size: 14px; letter-spacing: 0.41999998688697815px; background-color: rgb(255, 255, 255);" class="">160 717 4363</span></div>
<div class=""><span style="caret-color: rgb(35, 35, 51); color: rgb(35, 35, 51); font-family: "Almaden Sans", Helvetica, Arial; font-size: 14px; letter-spacing: 0.41999998688697815px; background-color: rgb(255, 255, 255);" class="">Passcode: </span><span style="caret-color: rgb(35, 35, 51); color: rgb(35, 35, 51); font-family: "Almaden Sans", Helvetica, Arial; font-size: 14px; letter-spacing: 0.41999998688697815px; background-color: rgb(255, 255, 255);" class="">814155</span></div>
<div class=""><span style="caret-color: rgb(35, 35, 51); color: rgb(35, 35, 51); font-family: "Almaden Sans", Helvetica, Arial; letter-spacing: 0.41999998688697815px; background-color: rgb(255, 255, 255); font-size: 14px;" class=""><br class="">
</span></div>
<div class=""><span style="font-size: 14px;" class="">Regards, Stepan</span></div>
<div class=""><span style="font-size: 14px;" class="">p.s. Sorry, I just realized that I did not forward my previous calls for the meeting to the hallb mailing list.<br class="">
</span>
<div class=""><br class="">
<blockquote type="cite" class="">
<div class="">On Feb 5, 2023, at 10:56 AM, Stepan Stepanyan <<a href="mailto:stepanya@jlab.org" class="">stepanya@jlab.org</a>> wrote:</div>
<br class="Apple-interchange-newline">
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<span style="font-size: 14px;" class="">Dear all,</span>
<div class=""><span style="font-size: 14px;" class=""><br class="">
</span></div>
<div class=""><span style="font-size: 14px;" class="">After responses from you, here how the agenda for our discussions of subsystem performances at x2 higher luminosity looks like. <br class="">
</span>
<div class="">
<ul class="MailOutline">
<li class=""><span style="font-size: 14px;" class="">Friday, February 17, 1:30 pm: FT, FTOF/CTOF and CND;</span></li><li class=""><span style="font-size: 14px;" class="">Wednesday, February 22, 2:30 pm: ECal, DAQ, and beamline;</span></li><li class=""><span style="font-size: 14px;" class="">Friday, February 24, 1:30 pm: CVT;</span></li><li class=""><span style="font-size: 14px;" class="">Friday, March 3, 1:30 pm: DC, RICH, LTCC, and HTCC.</span></li></ul>
</div>
<div class=""><span style="font-size: 14px;" class="">Note, x2 higher means, for example, for RG-A, 150 nA on a 5 cm long hydrogen target. </span></div>
<div class=""><span style="font-size: 14px;" class=""><br class="">
</span></div>
<div class=""><span style="font-size: 14px;" class="">I will arrange for meeting rooms and also zoom in the coming week. We will aim to keep sessions not longer than an hour and a half. We can have follow-up discussions if needed.</span></div>
<div class=""><span style="font-size: 14px;" class=""><br class="">
</span></div>
<div class=""><span style="font-size: 14px;" class="">Regards, Stepan</span></div>
<div class=""> <br class="">
<blockquote type="cite" class="">
<div class="">On Feb 1, 2023, at 1:27 PM, Stepan Stepanyan <<a href="mailto:stepanya@jlab.org" class="">stepanya@jlab.org</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">
Dear all,
<div class=""><br class="">
</div>
<div class="">Thanks for the replies. Based on the availability of subsystem owners, I have the following schedule for discussions (see below). Please, let me know if changes are needed. I know the times for Wednesday’s (2:30 pm EST) and Friday’s (1:30 pm EST)
meetings are not ideal for Silvia and Raffaella, so if needed, we can find some morning time for these two subsystems. It will be good to know the discussion time each subsystem will need. We may be able to combine some of these.\</div>
<div class=""><br class="">
<div class="">
<div class="">
<div class="">
<ul class="Apple-dash-list" style="margin: 0px; padding-left: 2em; list-style-type: none;">
<ul class="">
<li style="white-space: pre-wrap;" class="">FTOF/CTOF, and CND, February 17</li></ul>
<li class=""></li><li class=""></li><li class=""></li><ul class="">
<li style="white-space: pre-wrap;" class="">DAQ and beam line, February 22</li><li style="white-space: pre-wrap;" class="">CVT, February 24</li><li style="white-space: pre-wrap;" class="">RICH, LTCC, and HTCC, March 1</li><li style="white-space: pre-wrap;" class=""><span style="caret-color: rgba(0, 0, 0, 0.847); font-family: -apple-system-font;" class="">ECal and FT, DC (tracking without uRWELL), March 3</span></li></ul>
</ul>
<div class=""><br class="">
</div>
<div class=""><font face="-apple-system-font" class=""><span style="caret-color: rgba(0, 0, 0, 0.847); white-space: pre-wrap;" class="">Regards, Stepan</span></font></div>
</div>
<div class=""><font face="-apple-system-font" class=""><span style="caret-color: rgba(0, 0, 0, 0.847); white-space: pre-wrap;" class=""><br class="">
</span></font></div>
<div class=""><font face="-apple-system-font" class=""><span style="caret-color: rgba(0, 0, 0, 0.847); white-space: pre-wrap;" class=""><br class="">
</span></font></div>
<div class="">
<ul class="Apple-dash-list" style="margin: 0px; padding-left: 2em; list-style-type: none; caret-color: rgba(0, 0, 0, 0.847); font-family: -apple-system-font;">
<li class=""></li></ul>
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<div class="">
<blockquote type="cite" class="">
<div class="">On Jan 20, 2023, at 8:33 PM, Stepan Stepanyan <<a href="mailto:stepanya@jlab.org" class="">stepanya@jlab.org</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">
Dear all,
<div class=""><br class="">
</div>
<div class="">During the “High luminosity upgrade” TF work about 2 years ago, we assessed the performance of subsystems with x2 higher luminosity operations. Back then, we concluded that the detectors would operate and maintain their performances (resolutions
and efficiencies) with x2 higher than the designed luminosity of CLAS12 (see reports at <a href="https://wiki.jlab.org/physdivwiki/index.php/Task_Forces_2020#tab=High_Luminosity|CLAS12|CLAS12" class="">https://wiki.jlab.org/physdivwiki/index.php/Task_Forces_2020#tab=High_Luminosity%7CCLAS12%7CCLAS12</a>).
There was one caveat though, we were not sure about software performance for some of the subsystems. Now that our software is ready for pass2 and as good as it can be for the future, I believe it is time to return to the performance discussions again. I propose
to use the Hall-B round table, Wednesdays at 2:30 pm, and TF, Fridays at 1:30 pm, meetings in February for such discussions. These discussions should cover (not in any particular order):</div>
<div class="">* FTOF/CTOF</div>
<div class="">* CND</div>
<div class="">* ECal</div>
<div class="">* HTCC</div>
<div class="">* RICH</div>
<div class="">* LTCC</div>
<div class="">* FT</div>
<div class="">* DAQ</div>
<div class="">* Beamline</div>
<div class="">* CVT </div>
<div class="">* FD tracking (as is, without uRWELL addition)</div>
<div class=""><br class="">
</div>
<div class="">Subsystem experts, please let me know your availability and when you will be ready for such discussions. Please reply by the end of next week to be able to start scheduling the meetings in February.</div>
<div class=""><br class="">
</div>
<div class="">Thanks,</div>
<div class="">Stepan </div>
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