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Yes, I will be there. I'm putting together an abridged talk which has some interesting conclusions. Hopefully I'll be able to explain things coherently enough.</div>
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See you at 2:15pm</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Sebastian Kuhn <kuhn@jlab.org><br>
<b>Sent:</b> Wednesday, September 14, 2022 11:41 AM<br>
<b>To:</b> pilleux@jlab.org <pilleux@jlab.org><br>
<b>Cc:</b> Gregory Matousek <gregory.matousek@duke.edu>; Anselm Vossen, Ph.D. <anselm.vossen@duke.edu>; rgc_analysis@jlab.org <rgc_analysis@jlab.org>; Harut Avagyan <avakian@jlab.org>; Mohammad Hattawy <hattawy@jlab.org>; Silvia Niccolai <silvia@jlab.org>;
Raffaella De Vita <devita@jlab.org>; Daria Sokhan <daria@jlab.org>; Florian Hauenstein <hauenst@jlab.org>; Nathan Baltzell <baltzell@jlab.org>; Sergey Boyarinov <boiarino@jlab.org><br>
<b>Subject:</b> Re: [Rgc_analysis] [EXTERNAL] Re: RGC Beam Charge Asymmetry & Scaler Bank QA</font>
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<div class="" style="word-wrap:break-word; line-break:after-white-space">Dear Gregory, Carlos and Noemie,
<div class=""><br class="">
</div>
<div class="">these are very interesting findings - and I can’t say I understand exactly what you are showing and what it could mean. I tend to think that it would be important enough to discuss this today during the daily RC meeting (unfortunately starting
at 2:15 p.m.), since we may actually have the opportunity to think of some kind of tests in the Hall (beam is not expected back until later this evening). If it turns out that we cannot normalize our data to helicity- and lifetime-gated FC counts, we need
to act rather urgently, so I would prefer not to wait until next Tuesday’s RG-C analysis meeting. Let me know what you think and if you can attend.</div>
<div class=""><br class="">
</div>
<div class="">- Sebastian</div>
<div class="">
<div><br class="">
<blockquote type="cite" class="">
<div class="">On Sep 14, 2022, at 6:04 AM, <a href="mailto:pilleux@jlab.org" class="">
pilleux@jlab.org</a> wrote:</div>
<br class="x_Apple-interchange-newline">
<div class=""><span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">Hello
Greg,</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">I
have been wondering about the issues you show, and I asked Raffaella and</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">Nathan
about it, I don't know if they had time to look into it yet.</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">As
you show, for many runs there are weird HEL::scaler readings in a</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">number
of files. For these files, the clock information gives crazy</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">numbers,
and the accumulated charge is almost 0. Please find attached a</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">plot
for run 16889 where I plot the time between two consecutive readings</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">(that
I compute from the accumulated charge using the beam current). It is</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">supposed
to be close to 33ms. As you show in slide 10, the first 86 files</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">look
fine but the last 214 don't.</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">A
problem I have with that is that the number of readings which are fine</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">change
run by run, and it makes the normalization of yields, to compute</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">DSA
for example, difficult. For now, all the normalizations of my dvcs</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">asymetries
look crazy (even when I try to include the proportion of 'good'</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">readings
in my scaling).</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">Best
regards, Noémie.</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<blockquote type="cite" class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; orphans:auto; text-align:start; text-indent:0px; text-transform:none; white-space:normal; widows:auto; word-spacing:0px; text-decoration:none">
One more word,<br class="">
<br class="">
The analysis can be expanded upon by not just looking at file-by-file<br class="">
scaler bank observables (for example, what was the fcup accumulation for<br class="">
file 'n') , but entry-by-entry observables. In that case, we could ask<br class="">
"how does the fcup accumulation evolve within the recon file itself?".<br class="">
Perhaps this could help us isolate more outliers or anomalies in the data.<br class="">
If any one has an idea of what we could investigate, feel free to let me<br class="">
know.<br class="">
<br class="">
Gregory<br class="">
________________________________<br class="">
From: Gregory Matousek <<a href="mailto:gregory.matousek@duke.edu" class="">gregory.matousek@duke.edu</a>><br class="">
Sent: Tuesday, September 13, 2022 6:31 PM<br class="">
To:<span class="x_Apple-converted-space"> </span><a href="mailto:rgc_analysis@jlab.org" class="">rgc_analysis@jlab.org</a><span class="x_Apple-converted-space"> </span><<a href="mailto:rgc_analysis@jlab.org" class="">rgc_analysis@jlab.org</a>><br class="">
Cc: Anselm Vossen, Ph.D. <<a href="mailto:anselm.vossen@duke.edu" class="">anselm.vossen@duke.edu</a>><br class="">
Subject: [Rgc_analysis] [EXTERNAL] RGC Beam Charge Asymmetry & Scaler Bank<br class="">
QA<br class="">
<br class="">
Hello all,<br class="">
<br class="">
<blockquote type="cite" class="">From today's RGC meeting, we were talking about putting in more effort<br class="">
into understanding the beam charge asymmetries from the faraday cup<br class="">
charge accumulation. I put together a presentation here which shows some<br class="">
work on just that<br class="">
(<a href="https://urldefense.com/v3/__https://cc.jlab.org/system/files/users/gmat*40jlab.org/Presentations/Scaler*20Bank*20QA*20for*20Target*20Polarization*20*40*20RGC.pdf*3Chttps:/*urldefense.com/v3/__https:/*cc.jlab.org/system/files/users/gmat*40jlab.org/Presentations/Scaler*20Bank*20QA*20for*20Target*20Polarization*20*40*20RGC.pdf__;JSUlJSUlJSUl!!OToaGQ!poBSft7q1QE-VjblFkLfXh9HGcjN1frfU9VC6AYrvF5WWO1CO_fCjHLu0CxfWhleR5s-DA8btLudX_LpgJ-8PlunFRdZ-sWwLy3v$*3E__;JSUlJSUlJSUlJS8vKioqKioqKioqJQ!!OToaGQ!sL5RlMuLSrOHoZllSwaEIA3vCLC9hoNM93etcS4QfXD-fOT5Qr2MF3PpQbcOpUrlw8CXucpgF1HrKYw-x2I$" class="">https://cc.jlab.org/system/files/users/gmat%40jlab.org/Presentations/Scaler%20Bank%20QA%20for%20Target%20Polarization%20%40%20RGC.pdf<https://urldefense.com/v3/__https://cc.jlab.org/system/files/users/gmat*40jlab.org/Presentations/Scaler*20Bank*20QA*20for*20Target*20Polarization*20*40*20RGC.pdf__;JSUlJSUlJSUl!!OToaGQ!poBSft7q1QE-VjblFkLfXh9HGcjN1frfU9VC6AYrvF5WWO1CO_fCjHLu0CxfWhleR5s-DA8btLudX_LpgJ-8PlunFRdZ-sWwLy3v$></a>)<br class="">
</blockquote>
<br class="">
In this presentation, I look into the HEL::scaler and RUN::scaler banks<br class="">
for Run 16889 and Run 16918 , the former having an apparent 0.6% BCA and<br class="">
the latter -0.02% BCA (slide 16 reports +0.02% but this is because FC+ is<br class="">
defined by beam/target spins parallel, where in fact it should just be<br class="">
helicity = +1, accounting for just HWP status). We can see anomalies in<br class="">
the scaler banks for both runs, which needs discussing.<br class="">
<br class="">
Please feel free to ask any questions!<br class="">
<br class="">
Gregory<br class="">
_______________________________________________<br class="">
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</blockquote>
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