<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi, Neven. I am very skeptical that FLUKA will get the cross-sections even for MOLLER scattering right. I personally feel if is safer if you use our own generators for each process and use GEANT or FLUKA to look at punchthroughs and general acceptance through a realistic apparatus. This will save the CPU time you are talking about. The MOLLER and ep cross sections as a function of angle does not look right to me. In linear scale you have no rate beyond 0.4 degrees. This is simply not correct. <div class="">KK</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Sep 26, 2017, at 3:28 PM, Neven Simicevic <<a href="mailto:neven@phys.latech.edu" class="">neven@phys.latech.edu</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type" class="">
<div bgcolor="#FFFFFF" text="#000000" class="">
Hi KK,<br class="">
<br class="">
Those are raw data out of the latest FLUKA and out of one trial run.
I assume that FLUKA has state of the art cross sections in it, but,
to be confident in the results, one needs to check if the results
agree with existing experimental data and GEANT.<br class="">
This requires higher statistic to separate the results into
different channels. <br class="">
Acceptance in the graphs is slightly larger than 5 to 17 mrad just
to see beyond the limits. <br class="">
The gap is a result of the fact that the cross section is linear in
solid angle or cos(theta), and since I plotted equidistant binning
in cos(theta) as non-equidistant binning in theta one binning was
skipped. <br class="">
So it is just a way it was plotted not that there is a gap in
physics. <br class="">
0.15% is what we use to estimate the ratio in rates between pions
and electrons and, I guess, in the way you defined.<br class="">
<br class="">
The idea of this exercise is to speed up the simulation by dividing
it into stages where the output of one stage becomes the input into
the other. <br class="">
<br class="">
For example, the spectral distribution of the particles coming out
of the target can be the input into simulating the background due to
the beam dump. This will speed up the simulation by orders of
magnitude. <br class="">
<br class="">
Cheers, <br class="">
<br class="">
Neven<br class="">
<br class="">
<br class="">
<br class="">
<div class="moz-cite-prefix">On 09/26/2017 12:16 PM, Krishna Kumar
wrote:<br class="">
</div>
<blockquote cite="mid:7B4BEA5B-D843-4F0B-B12A-4B95741C6BCA@stonybrook.edu" type="cite" class="">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" class="">
HI, I won’t be able to call into the meeting. What generator are
you using? Also our acceptance is 5 to 17 mrad or so. I don’t
understand why you have no electrons between 0.4 and 0.5 degrees.
The 0.15% estimate is for pions generated in the target in the
target (prompt electro or photo production) that go through the
primary acceptance collimator, compared to the Moller rate through
that collimator. No punch throughs have ever been properly
simulated (yet). Perhaps I am mistaken about what you call 0.15%.
<div class=""><br class="">
</div>
<div class="">Cheers, KK</div>
<div class=""><br class="">
<div class="">
<blockquote type="cite" class="">
<div class="">On Sep 26, 2017, at 1:04 PM, Neven Simicevic
<<a moz-do-not-send="true" href="mailto:neven@phys.latech.edu" class="">neven@phys.latech.edu</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type" class="">
<div bgcolor="#FFFFFF" text="#000000" class=""> Dear all,<br class="">
<br class="">
I do not know if we will have time to discuss it today,
but I am looking into pion/electron rates. <br class="">
In all our simulations we assume that the pion rate is
~0.15 percent. <br class="">
Attached is my first preliminary simulation of
pion/electron rates as a function of the particles angle
and energy.<br class="">
I have to carefully recheck this numbers, change binning
a little, and increase statistics.<br class="">
<br class="">
Cheers,<br class="">
<br class="">
Neven<br class="">
<br class="">
<br class="">
<br class="">
<br class="">
<div class="moz-cite-prefix">On 09/25/2017 08:03 AM,
Kurtis Bartlett wrote:<br class="">
</div>
<blockquote cite="mid:CA+onGHMX6-f6hjKhKD08+BpudyMn=cswHL+SOYUMQoOFttnwDQ@mail.gmail.com" type="cite" class="">
<div dir="ltr" class="">
<div class="">
<div class="">
<div class="">Hello Everyone, <br class="">
<br class="">
</div>
As a reminder we will have our next meeting
tomorrow afternoon at our new meeting time of 4
pm EST.<br class="">
<br class="">
</div>
Cheers,<br class="">
<br class="">
</div>
Kurtis<br class="">
</div>
<div class="gmail_extra"><br class="">
<div class="gmail_quote">On Tue, Sep 19, 2017 at
9:52 AM, Kurtis Bartlett <span dir="ltr" class=""><<a moz-do-not-send="true" href="mailto:kdbartlett@email.wm.edu" target="_blank" class="">kdbartlett@email.wm.edu</a>></span>
wrote:<br class="">
<blockquote class="gmail_quote" style="margin:0 0
0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div dir="ltr" class="">Hello Everyone,<br class="">
<br class="">
As a reminder to the members of the <span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789m_2145963482046753178m_-3216089366405490180m_6242814976674702406m_6383061932988912735gmail-m_2175965128871661572gmail-m_-4121694774762064494gmail-il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789m_2145963482046753178m_-3216089366405490180m_6242814976674702406il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789m_2145963482046753178m_-3216089366405490180il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789m_2145963482046753178il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476il"><span class="m_-2189440189183845079m_-1454229031253393096il"><span class="m_-2189440189183845079il">MOLLER</span></span></span></span></span></span></span></span></span></span></span></span></span></span> <span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789m_2145963482046753178m_-3216089366405490180m_6242814976674702406m_6383061932988912735gmail-m_2175965128871661572gmail-m_-4121694774762064494gmail-il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789m_2145963482046753178m_-3216089366405490180m_6242814976674702406il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789m_2145963482046753178m_-3216089366405490180il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789m_2145963482046753178il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476il"><span class="m_-2189440189183845079m_-1454229031253393096il"><span class="m_-2189440189183845079il">Pion</span></span></span></span></span></span></span></span></span></span></span></span></span> <span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789m_2145963482046753178m_-3216089366405490180il">Background</span>/Det<wbr class="">ector working group, there will be
a meeting <b class="">next week</b> on
Tuesday Sept. 26 at 4 pm EST.
<div style="font-size:12.8px" class=""><br class="">
</div>
<div style="font-size:12.8px" class=""><span style="font-size:12.8px" class="">The
agenda for the meeting can be found on
the </span><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789m_2145963482046753178m_-3216089366405490180m_6242814976674702406m_6383061932988912735gmail-m_2175965128871661572gmail-m_-4121694774762064494gmail-m_9088376801859300875gmail-il" style="font-size:12.8px"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789m_2145963482046753178m_-3216089366405490180m_6242814976674702406il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789m_2145963482046753178m_-3216089366405490180il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789m_2145963482046753178il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488m_-4991608047743486789il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901m_-8730992862358660488il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036m_-4098367283173685901il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487m_7714064982042988025m_3723910778592663036il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265m_-2983144210669640487il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375m_581691258447352265il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476m_6598305119741077375il"><span class="m_-2189440189183845079m_-1454229031253393096m_-7059616030237860476il"><span class="m_-2189440189183845079m_-1454229031253393096il"><span class="m_-2189440189183845079il">MOLLER</span></span></span></span></span></span></span></span></span></span></span></span></span></span><span style="font-size:12.8px" class=""> wiki:</span></div>
<div class=""><br class="" clear="all">
<a moz-do-not-send="true" href="https://hallaweb.jlab.org/wiki/index.php/MOLLER_Pion_Background_Meeting_Tuesday%2C_September_26%2C_2017_4:00pm_EST" target="_blank" class="">https://hallaweb.jlab.org/<wbr class="">wiki/index.php/MOLLER_Pion_<wbr class="">Background_Meeting_Tuesday%2C_<wbr class="">September_26%2C_2017_4:00pm_<wbr class="">EST</a><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">Feel free to add any other
points of business to the wiki.
<div style="font-size:12.8px" class="">
<div style="font-size:12.8px" class="">
<div style="font-size:12.8px" class=""><br class="">
</div>
<div style="font-size:12.8px" class="">
<div style="font-size:12.8px" class="">Here
is the Bluejeans call information:</div>
<div style="font-size:12.8px" class=""><br class="">
</div>
<div style="font-size:12.8px" class="">URL: <a moz-do-not-send="true" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__bluejeans.com_624029893&d=DwMFaQ&c=lz9TcOasaINaaC3U7FbMev2lsutwpI4--09aP8Lu18s&r=LyAb7BfuulVB-k0tbOhHTpVqHlxbnL-in83zvJV-2vY&m=RFql1jSTzLYoUDLMOtDWj1KkVbQmux44064kA9leRyI&s=DMRTgckGgIUul00m3zSVpKaBCn2stcSPjNNftpslmhE&e=" target="_blank" class="">https://bluejeans.com/624<wbr class="">029893</a></div>
<div style="font-size:12.8px" class=""><br class="">
</div>
<div style="font-size:12.8px" class="">Phone
Number: <a moz-do-not-send="true" href="tel:1-888-240-2560" value="+18882402560" target="_blank" class="">1-888-240-2560</a></div>
<div style="font-size:12.8px" class=""><br class="">
</div>
<div style="font-size:12.8px" class="">Meeting
ID: 624029893</div>
<div style="font-size:12.8px" class=""><br class="">
</div>
<div style="font-size:12.8px" class="">Hope
to see everyone there.</div>
<div style="font-size:12.8px" class=""><br class="">
</div>
<div style="font-size:12.8px" class="">Cheers,</div>
<div style="font-size:12.8px" class=""><br class="">
</div>
<div style="font-size:12.8px" class="">Kurtis</div>
</div>
</div>
</div>
<span class="HOEnZb"><font class="" color="#888888"><br class="">
-- <br class="">
<div class="m_-2189440189183845079gmail_signature" data-smartmail="gmail_signature">
<div dir="ltr" class="">Kurtis D.
Bartlett<br class="">
<br class="">
<div class="">PhD. Research
Candidate </div>
<div class="">College of William and
Mary Physics Department<br class="">
<a moz-do-not-send="true" href="mailto:kdbartlett@email.wm.edu" target="_blank" class="">kdbartlett@email.wm.edu</a></div>
</div>
</div>
</font></span></div>
</div>
</blockquote>
</div>
<br class="">
<br class="" clear="all">
<br class="">
-- <br class="">
<div class="gmail_signature" data-smartmail="gmail_signature">
<div dir="ltr" class="">Kurtis D. Bartlett<br class="">
<br class="">
<div class="">PhD. Research Candidate </div>
<div class="">College of William and Mary
Physics Department<br class="">
<a moz-do-not-send="true" href="mailto:kdbartlett@email.wm.edu" target="_blank" class="">kdbartlett@email.wm.edu</a></div>
</div>
</div>
</div>
<br class="">
<fieldset class="mimeAttachmentHeader"></fieldset>
<br class="">
<pre class="" wrap="">_______________________________________________
Moller_pion_bg mailing list
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:Moller_pion_bg@jlab.org">Moller_pion_bg@jlab.org</a>
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="https://mailman.jlab.org/mailman/listinfo/moller_pion_bg">https://mailman.jlab.org/mailman/listinfo/moller_pion_bg</a>
</pre>
</blockquote>
<br class="">
<pre class="moz-signature" cols="72">--
Neven Simicevic
Wayne and Juanita Spinks Professor of Physics
College of Engineering and Science
Louisiana Tech University
600 Dan Reneau Dr., Engineering Annex
P.O. Box 10348 T.S.
Ruston, LA 71272
Tel: 318-257-3591
</pre>
</div>
<span id="cid:813BF1C5-4344-4DB4-AAC7-5626D72F9E80@stonybrook.edu" class=""><pion_electron_rates.pdf></span>_______________________________________________<br class="">
Moller_pion_bg mailing list<br class="">
<a moz-do-not-send="true" href="mailto:Moller_pion_bg@jlab.org" class="">Moller_pion_bg@jlab.org</a><br class="">
<a class="moz-txt-link-freetext" href="https://mailman.jlab.org/mailman/listinfo/moller_pion_bg">https://mailman.jlab.org/mailman/listinfo/moller_pion_bg</a><br class="">
</div>
</blockquote>
</div>
<br class="">
</div>
</blockquote>
<br class="">
<pre class="moz-signature" cols="72">--
Neven Simicevic
Wayne and Juanita Spinks Professor of Physics
College of Engineering and Science
Louisiana Tech University
600 Dan Reneau Dr., Engineering Annex
P.O. Box 10348 T.S.
Ruston, LA 71272
Tel: 318-257-3591
</pre>
</div>
</div></blockquote></div><br class=""></div></body></html>