<div dir="ltr">Hi all,<div><br></div><div>Related to the optical photon detector module simulations, Chris will continue to be working with us exclusively over the summer before he goes off to grad school. Yay!</div><div><br></div><div>Cheers,</div><div>Wouter</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, May 2, 2015 at 12:51 PM, Michael Gericke <span dir="ltr"><<a href="mailto:mgericke@jlab.org" target="_blank">mgericke@jlab.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello,<br>
<br>
As discussed in previous phone conferences, the most important work to<br>
be done<br>
on the detector development front at the moment is to simulate the<br>
detector region<br>
as completely as possible.<br>
<br>
This includes (in order of urgency):<br>
<br>
1) Full background implementation in the detector region (E&M and Hadronic)<br>
2) Implementation of an initial design for detector mounting and PMT<br>
shielding<br>
3) Implementation of an initial design for the beam line in the detector<br>
region<br>
4) Implementation of an initial design of the mounting and shielding<br>
geometry immediately down stream of the detectors region<br>
5) Implementation of the reference design detector module geometry and<br>
optical processes (this can only really be optimized after<br>
item 1 is implemented and item one depends on items 2 - 4 )<br>
<br>
Without these, we can have no hope of arriving at a viable detector design.<br>
For example, with the current light guide reference design, the tests<br>
regarding<br>
signal from the light guides due to electrons going through the light guide<br>
gives us only a partial idea of the corresponding dilution. A complete<br>
picture<br>
and the actual viability of the current design can only emerge after we<br>
have<br>
studied this with the full background physics implemented in the<br>
simulations and<br>
ideally further testing the design at facilities that provide hadrons<br>
(maybe at<br>
TRIUMF or other facilities mentioned by Nevin and Dustin).<br>
<br>
This is a big job and we have several people are already active in this<br>
regard.<br>
<br>
As far as I am aware, we have:<br>
<br>
Detector module geometry and optical simulations: Wouter + Student, old<br>
non-GDML implementation exists from Peiqing<br>
Backgrounds (in general): Rakitha<br>
<br>
After discussing with Rakitha and realizing that he is rather over<br>
committed already,<br>
I asked Juliette to get her new graduate student Sakib Rahman started on<br>
the<br>
background simulations in the detector region. This may also include<br>
working on<br>
implementation of some initial mounting/shielding scheme, of which the<br>
most important<br>
aspect is the proposed lead cylinder to shield the PMTs. I'd like to ask<br>
Sakib and Rakitha<br>
to communicate with each other about this and to keep Seamus in the loop.<br>
<br>
Thank you,<br>
<br>
Michael<br>
(For the MOLLER integrating detector working group)<br>
<br>
<br>
<br>
<br>
--<br>
Michael Gericke<br>
<br>
Associate Professor<br>
<br>
University of Manitoba<br>
Department of Physics<br>
30A Sifton Road, 213 Allen Bldg.<br>
Winnipeg, MB R3T 2N2, Canada<br>
<br>
Tel.: 204 474 6203<br>
Fax.: 204 474 7622<br>
<br>
<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature">Wouter Deconinck<br>Assistant Professor of Physics<br>College of William & Mary<br>Office: Small Hall 343D<br>Phone: (757) 221-3539</div>
</div>