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Valery and RICH Group Collaborators:
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<div>Congratulations! Great job!</div>
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<div>Bill<br>
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<div class="PlainText">William Bertozzi<br>
Professor of Physics, Emeritus<br>
Department of Physics, and<br>
Laboratory for Nuclear Science<br>
Massachusetts Institute of Technology<br>
26-437<br>
77 Massachusetts Avenue<br>
Cambridge, MA 02139<br>
617-253-5167</div>
<div class="PlainText">Cell: 617-899-3731 (preferred)</div>
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<div id="divRpF192126" style="direction: ltr;"><font face="Tahoma" size="2" color="#000000"><b>From:</b> Hallb [hallb-bounces@jlab.org] on behalf of Valery Kubarovsky [vpk@jlab.org]<br>
<b>Sent:</b> Tuesday, September 05, 2017 6:56 PM<br>
<b>To:</b> hallb@jlab.org; dsg-rich<br>
<b>Subject:</b> [Hallb] RICH is taking cosmic muons data<br>
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Dear All,</div>
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On <span class="Object" id="OBJ_PREFIX_DWT4413_com_zimbra_date" style="color:rgb(0,90,149); text-decoration:none"><span class="Object" id="OBJ_PREFIX_DWT4414_com_zimbra_date" style="color:rgb(0,90,149); text-decoration:none">Friday</span></span> September 1st
before midnight RICH group started to take cosmic data with 32 tiles (96 MAPMTs, 64 pixels each) completely equipped with front-end electronics. So in total we have 6144 RICH channels. The trigger is using information from two trigger RICH tiles and two scintillator
counters. Please take a look to the attached plots.</div>
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You can find more pictures with Cherenkov rings and experimental equipment in</div>
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https://userweb.jlab.org/~vpk/RICH12/2017_09_05%20RICH_96/</div>
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<span style="color:rgb(0,0,0); font-family:arial,helvetica,sans-serif; font-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal; orphans:auto; text-align:start; text-indent:0px; text-transform:none; white-space:normal; widows:auto; word-spacing:0px; background-color:rgb(255,255,255); display:inline!important; float:none">The
signal in the center of the ring is coming from the muon hitting the front face of the MAPMT.</span></div>
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<span style="color:rgb(0,0,0); font-family:arial,helvetica,sans-serif; font-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal; orphans:auto; text-align:start; text-indent:0px; text-transform:none; white-space:normal; widows:auto; word-spacing:0px; background-color:rgb(255,255,255); display:inline!important; float:none">It
has many pixels fired.</span></div>
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<span style="color:rgb(0,0,0); font-family:arial,helvetica,sans-serif; font-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal; orphans:auto; text-align:start; text-indent:0px; text-transform:none; white-space:normal; widows:auto; word-spacing:0px; background-color:rgb(255,255,255); display:inline!important; float:none">DAQ
and front-end are working very stable. </span></div>
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A lot of people and groups are participating in this project. Many thanks to all of them!<br>
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Regards,</div>
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Valery</div>
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