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I agree that it is better to start at the high HMS momentum and work down,</div>
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so the HMS will not have to be cycled.</div>
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The SHMS is easier to cycle since we set all the SHMS magnets by current.</div>
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CHeers,</div>
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Mark</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Joosten, Sylvester Johannes <sjoosten@anl.gov><br>
<b>Sent:</b> Tuesday, July 2, 2019 2:19 PM<br>
<b>To:</b> Hamza Atac<br>
<b>Cc:</b> Mark Jones; e12-15-001@jlab.org<br>
<b>Subject:</b> Re: [E12-15-001] Elastics for VCS experiment</font>
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<div class="" style="word-wrap:break-word; line-break:after-white-space">Hi Hamza,
<div class=""><br class="">
</div>
<div class="">
<div>My two cents: It might make sense to keep the elastics together to properly commission the coincidence trigger and study the effects of proton nuclear interactions.</div>
<div><br class="">
</div>
<div>You can keep things efficient by starting with the highest HMS momentum, and then continuously lowering the momentum while going through the settings (going through them in reverse order from how Mark send them).</div>
<div><br class="">
</div>
<div>Anyway, just my two cents :-).</div>
<div><br class="">
</div>
<div>Cheers,</div>
<div>Sylvester</div>
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<blockquote type="cite" class="">
<div class="">On Jul 2, 2019, at 1:06 PM, Hamza Atac <<a href="mailto:tuc72417@temple.edu" class="">tuc72417@temple.edu</a>> wrote:</div>
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Hi Mark,
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</div>
<div class="">Do you want to run all elastics in the beginning of the experiment or run each elastic before running the corresponding kinematics? Since it will take some time to change the momentum settings, would it be more efficient to run each elastic just
before we run the corresponding kinematics run? </div>
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</div>
<div class="">Regards,</div>
<div class="">Hamza</div>
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<div dir="ltr" class="x_gmail_attr">On Tue, Jul 2, 2019 at 1:50 PM Mark Jones <<a href="mailto:jones@jlab.org" class="">jones@jlab.org</a>> wrote:<br class="">
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1 hour for single only and 1 hour for coincidence.</div>
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CHeers,</div>
<div class="" style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt">
Mark</div>
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<div id="x_gmail-m_-4305302359114286564divRplyFwdMsg" dir="ltr" class=""><font face="Calibri, sans-serif" class="" style="font-size:11pt"><b class="">From:</b><span class="x_Apple-converted-space"> </span>Hamza Atac <<a href="mailto:tuc72417@temple.edu" target="_blank" class="">tuc72417@temple.edu</a>><br class="">
<b class="">Sent:</b><span class="x_Apple-converted-space"> </span>Tuesday, July 2, 2019 1:45 PM<br class="">
<b class="">To:</b><span class="x_Apple-converted-space"> </span>Nikos Sparveris<br class="">
<b class="">Cc:</b><span class="x_Apple-converted-space"> </span>Mark Jones;<span class="x_Apple-converted-space"> </span><a href="mailto:e12-15-001@jlab.org" target="_blank" class="">e12-15-001@jlab.org</a>; Paolone<br class="">
<b class="">Subject:</b><span class="x_Apple-converted-space"> </span>Re: [E12-15-001] Elastics for VCS experiment</font>
<div class=""> </div>
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<div dir="ltr" class="">Hi Mark,
<div class=""><br class="">
<div class="">I am updating the runlist on wiki. How long do you think each run should take? Would one hour be enough for each run ?</div>
<div class="">Best regards,</div>
<div class="">Hamza<br class="">
<div class=""><br class="">
</div>
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<div dir="ltr" class="x_gmail-m_-4305302359114286564x_gmail_attr">On Tue, Jul 2, 2019 at 1:24 PM Nikos Sparveris <<a href="mailto:sparveri@temple.edu" target="_blank" class="">sparveri@temple.edu</a>> wrote:<br class="">
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<div dir="ltr" class="">Yes Mark, agreed!
<div class="">Hamza, please update the run plan accordingly.</div>
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<div class=""><span class="" style="font-size:small">---------------------------------------------------</span></div>
<div class=""><span class="" style="font-size:12.8px">Nikos Sparveris</span><br class="">
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<div class="">Associate Professor</div>
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<span class="" style="font-size:12.8px">Physics Department, Temple University</span><br class="" style="font-size:12.8px">
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<span class="" style="font-size:12.8px">Philadelphia, PA 19122-1801</span><br class="">
</div>
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</span></div>
<div class="">Phone: +1-215-204-7425</div>
<div class=""><span class="" style="font-size:small">---------------------------------------------------</span><br class="">
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<div dir="ltr" class="x_gmail-m_-4305302359114286564x_gmail_attr">On Tue, Jul 2, 2019 at 12:54 PM Mark Jones <<a href="mailto:jones@jlab.org" target="_blank" class="">jones@jlab.org</a>> wrote:<br class="">
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<span class="">I would suggest that we do elastic for a range of the HMS momentum</span></div>
<div class="" style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt">
<span class="">that we are using in VCS. </span></div>
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<span class=""><br class="">
</span><span class=""></span><span class="">Ebeam q2 HMS mom HMS ang SHMS mom SHMS ang<span class="x_Apple-converted-space"> </span><br class="">
</span>
<div class=""> 4.5500 0.543 0.790 63.8 4.261 9.60 <br class="">
</div>
<div class=""> 4.5500 0.687 0.900 60.8 4.184 10.90 <br class="">
</div>
<div class=""> 4.5500 0.818 1.00 58.4 4.114 12.00 <span class="x_Apple-converted-space"> </span><br class="">
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<div class="">We should do this first to check out the coincidence timing.</div>
<div class="">The HMS timing will shift about 30-40 ns compared to the electrons</div>
<div class="">that are presently in the HMS. I talked to Brad, so he will be available </div>
<div class="">to adjust the coincidence trigger timing.</div>
<div class="">We should do one run with singles SHMS trigger and then one run with coincidence</div>
<div class="">trigger so that we can measure the losses due to proton nuclear interactions at</div>
<div class="">these momentum.</div>
<div class="">The rates are very high. So this should not take to long.</div>
<div class="">Given the high rates , it might be useful to take a run with the sieve in the SHMS.</div>
<div class=""><br class="">
</div>
<div class="">CHeers,</div>
<div class=""> Mark</div>
<span class=""></span><br class="">
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<div class=""><span class="" style="color:rgb(136,136,136); font-size:12.8px">Hamza Atac</span></div>
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<span class="" style="color:rgb(136,136,136); font-size:12.8px">SERC Room 413</span><br class="" style="color:rgb(136,136,136); font-size:12.8px">
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