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<p class="MsoNormal"><span class="EmailStyle21">Hi Stepan,<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Yes, 3.2m is right in front of BAND. Furthest BAND layer sits at 3meters upstream the target.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I would’ve expected to see the harp wire much further up. I also see an excess ~-400cm in DC track vertices, but nothing else upstream target for 15meters .<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Times New Roman",serif;color:#6C6C6C">-- </span><span style="font-size:10.5pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Times New Roman",serif;color:#6C6C6C">Efrain Segarra</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">Stepan Stepanyan <stepanya@jlab.org><br>
<b>Date: </b>Friday, March 1, 2019 at 11:28<br>
<b>To: </b>Efrain Patrick Segarra <segarrae@mit.edu><br>
<b>Cc: </b>"clas12_rgb@jlab.org" <clas12_rgb@jlab.org><br>
<b>Subject: </b>Re: Harp Wire Run<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Efrain, <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Attached is the distribution of the z-vertex of tracks in CLAS12 FD (DC tracks) REC::PARTICLE bank. I can see a peak (bump) 3.2 meters upstream. This is I believe where cryostat is, but I am not sure. I asked Cyril to give me a drawing
or the distance from the Harp to the target.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">The other two “peaks” from the cryo target cell and the scattering chamber downstream window. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Regards, Stepan<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Mar 1, 2019, at 10:48 AM, Efrain Patrick Segarra <<a href="mailto:segarrae@mit.edu">segarrae@mit.edu</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi Stepan,<span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"> <span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal">Just to follow up, I spoke with Nathan and I was looking at the REC::Particle bank, which has more requirements that might kill our tracks from harp.<span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"> <span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal">I’m looking at REC::Track bank, which IF we have tracks from harp, Nathan said they will be in there.<span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"> <span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal">I’ll send update as soon as I have that,<span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Times New Roman",serif;color:#6C6C6C">-- </span><span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Times New Roman",serif;color:#6C6C6C">Efrain Segarra</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt">From:<span class="xapple-converted-space"> </span></span></b><span style="font-size:12.0pt">Efrain Patrick Segarra <<a href="mailto:segarrae@mit.edu">segarrae@mit.edu</a>><br>
<b>Date:<span class="xapple-converted-space"> </span></b>Friday, March 1, 2019 at 10:37<br>
<b>To:<span class="xapple-converted-space"> </span></b>Stepan Stepanyan <<a href="mailto:stepanya@jlab.org">stepanya@jlab.org</a>><br>
<b>Subject:<span class="xapple-converted-space"> </span></b>Re: Harp Wire Run<o:p></o:p></span></p>
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<p class="MsoNormal"> <span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal">Hi Stepan,<span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"> <span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal">Attached here.<span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"> <span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal">I spoke with Veronique and she mentioned there is likely a cut in eventbuilder that requires physical target location.<span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"> <span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal">I’m waiting for when Nathan is free to confirm this,<span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Times New Roman",serif;color:#6C6C6C">-- </span><span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Times New Roman",serif;color:#6C6C6C">Efrain Segarra</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt">From:<span class="xapple-converted-space"> </span></span></b><span style="font-size:12.0pt">Stepan Stepanyan <<a href="mailto:stepanya@jlab.org">stepanya@jlab.org</a>><br>
<b>Date:<span class="xapple-converted-space"> </span></b>Friday, March 1, 2019 at 10:30<br>
<b>To:<span class="xapple-converted-space"> </span></b>Efrain Patrick Segarra <<a href="mailto:segarrae@mit.edu">segarrae@mit.edu</a>><br>
<b>Subject:<span class="xapple-converted-space"> </span></b>Re: Harp Wire Run<o:p></o:p></span></p>
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<p class="MsoNormal"> <span style="font-size:12.0pt"><o:p></o:p></span></p>
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<span style="font-size:12.0pt">Hi Efrain,<br>
<br>
Thanks for sending this info.<br>
<br>
Can you plot vertex distribution starting from -7000 to 1000 (your x-axis) and have y-axis in log scale.<br>
<br>
Stepan<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">On 3/1/19 10:10 AM, Efrain Patrick Segarra wrote:<o:p></o:p></span></p>
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<p class="MsoNormal">Hi Stepan,<span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"> <span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal">The file for the harp wire run is at:<span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:black"><span style="font-family:Monaco;color:white"> <span class="xapple-converted-space"> </span></span><span class="xs1"><span style="font-size:12.0pt;font-family:Monaco;color:white">/volatile/clas12/hauenst/jaw-0.8/hipo_6345_round1-all.hipo</span></span><span style="font-size:12.0pt;font-family:Monaco;color:white"><o:p></o:p></span></p>
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<p class="MsoNormal"> <span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal">There are 3 cooked splits inside this one hipo file.<span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"> <span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal">I took a look at the distribution you suggested – electron vertex – and after cooking, I don’t see anything that corresponds to tracks coming from the harp wire, which I would expect ~meters from actual target.<span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"> <span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal">I would think that the reconstruction cooking has some broad cuts on reasonable vertex position allowed. I’ll talk to Nathan or Veronique about this.<span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">-- </span><span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">Efrain Segarra</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">Massachusetts Institute of Technology</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">Physics PhD Candidate</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">NSF & Ford Fellow</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt"><a href="https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fweb.mit.edu%2Fsegarrae%2Fwww%2F&data=02%7C01%7Cclas12_rgb%40jlab.org%7C511f4072a492465c358608d69e648ac1%7Cb4d7ee1f4fb34f0690372b5b522042ab%7C1%7C0%7C636870552018611998&sdata=iNtBGHjCPQZcRLDMyunRzW9uiNE%2F4nlwz%2FiwkTRLASk%3D&reserved=0" originalSrc="http://web.mit.edu/segarrae/www/" shash="uKAYSqw2oqqECDG5Igkk1jE+t+hAVAlYRkwFEfswrEPY6446i5riqSAgxJ0KfDifGJt9BMX4tcGL1cJyQctfQP6PIeT+vuTm8Z4nKJLFDA+otVt21MnDDEbPWXS7Wf4gte6q/YrpHsWpGdPJM1L+uv4PjFDPqX0y7xkxio8pV/I="><span style="color:#954F72">web.mit.edu/segarrae/www/</span></a></span><span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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