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Pelle,<br>
<br>
Great job. Thanks.<br>
<br>
Stepan <br>
<div class="moz-cite-prefix">On 6/24/14, 10:43 PM, Hansson Adrian,
Per Ola wrote:<br>
</div>
<blockquote
cite="mid:34476483-2C30-41CD-9722-EC172AFB97B3@slac.stanford.edu"
type="cite">
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charset=ISO-8859-1">
<div>Hi All,</div>
<div><br>
</div>
<div>The test run nim paper is now on arxiv. Please see look at
your name and see if it's correct (I already had one issue).
There is a passw below if you want to claim ownership.</div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>/Pelle<br>
<br>
</div>
<div><br>
Begin forwarded message:<br>
<br>
</div>
<blockquote type="cite">
<div><b>From:</b> "<a moz-do-not-send="true"
href="mailto:e-prints@arxiv.org">e-prints@arxiv.org</a>"
<<a moz-do-not-send="true" href="mailto:e-prints@arxiv.org">e-prints@arxiv.org</a>><br>
<b>Date:</b> June 24, 2014 at 17:13:07 PDT<br>
<b>To:</b> "Hansson Adrian, Per Ola" <<a
moz-do-not-send="true"
href="mailto:phansson@slac.stanford.edu">phansson@slac.stanford.edu</a>><br>
<b>Subject:</b> <b>arXiv New submission -> 1406.6115 in
physics.ins-det from <a moz-do-not-send="true"
href="mailto:phansson@slac.stanford.edu">phansson@slac.stanford.edu</a></b><br>
<b>Reply-To:</b> "<a moz-do-not-send="true"
href="mailto:help@arxiv.org">help@arxiv.org</a>" <<a
moz-do-not-send="true" href="mailto:help@arxiv.org">help@arxiv.org</a>><br>
<br>
</div>
</blockquote>
<blockquote type="cite">
<div><span>Your submission submit/1007032 has been assigned the
permanent arXiv</span><br>
<span>identifier 1406.6115 and is available at:</span><br>
<span></span><br>
<span><a moz-do-not-send="true"
href="http://arxiv.org/abs/1406.6115">http://arxiv.org/abs/1406.6115</a></span><br>
<span></span><br>
<span></span><br>
<span>The paper password for this article is: xm9cp</span><br>
<span>Please share this with your co-authors. They may use it
to claim</span><br>
<span>ownership.</span><br>
<span></span><br>
<span></span><br>
<span>Abstract will appear in today's mailing as:</span><br>
<span>------------------------------------------------------------------------------</span><br>
<span>\\</span><br>
<span>arXiv:1406.6115</span><br>
<span>From: Per Hansson Adrian <<a moz-do-not-send="true"
href="mailto:phansson@slac.stanford.edu">phansson@slac.stanford.edu</a>></span><br>
<span>Date: Tue, 24 Jun 2014 00:51:56 GMT (5017kb,D)</span><br>
<span></span><br>
<span>Title: The Heavy Photon Search Test Detector</span><br>
<span>Authors: Marco Battaglieri, Sergey Boyarinov, Stephen
Bueltmann, Volker</span><br>
<span> Burkert, Andrea Celentano, Gabriel Charles, William
Cooper, Chris Cuevas,</span><br>
<span> Natalia Dashyan, Raffaella DeVita, Camille Desnault,
Alexandre Deur, Hovanes</span><br>
<span> Egiyan, Latifa Elouadrhiri, Rouven Essig, Vitaliy
Fadeyev, Clive Field, Arne</span><br>
<span> Freyberger, Yuri Gershtein, Nerses Gevorgyan,
Francois-Xavier Girod, Norman</span><br>
<span> Graf, Matthew Graham, Keith Griffioen, Alexander
Grillo, Michel Guidal,</span><br>
<span> Gunther Haller, Per Hansson Adrian, Ryan Herbst,
Maurik Holtrop, John Jaros,</span><br>
<span> Scott Kaneta, Mahbub Khandaker, Alexey Kubarovsky,
Valery Kubarovsky, Takashi</span><br>
<span> Maruyama, Jeremy McCormick, Ken Moffeit, Omar Moreno,
Homer Neal, Timothy</span><br>
<span> Nelson, Silvia Niccolai, Al Odian, Marco Oriunno,
Rafayel Paremuzyan, Richard</span><br>
<span> Partridge, Sarah Phillips, Emmanuel Rauly, Benjamin
Raydo, Joseph Reichert,</span><br>
<span> Emmanuel Rindel, Philippe Rosier, Carlos Salgado,
Philip Schuster, Youri</span><br>
<span> Sharabian, Daria Sokhan, Stepan Stepanyan, Natalia
Toro, Sho Uemura, Maurizio</span><br>
<span> Ungaro, Hakop Voskanyan, Dieter Walz, Larry Weinstein,
Bogdan Wojtsekhowski</span><br>
<span>Categories: physics.ins-det hep-ex</span><br>
<span>Comments: 15 pages, 18 figures, to be published in
Nuclear Instruments and</span><br>
<span> Methods in Physics Research Section A, editor: Per
Hansson Adrian</span><br>
<span>Report-no: SLAC-PUB-15999</span><br>
<span>License: <a moz-do-not-send="true"
href="http://arxiv.org/licenses/nonexclusive-distrib/1.0/">http://arxiv.org/licenses/nonexclusive-distrib/1.0/</a></span><br>
<span>\\</span><br>
<span> The Heavy Photon Search (HPS), an experiment to search
for a hidden sector</span><br>
<span>photon in fixed target electroproduction, is preparing
for installation at the</span><br>
<span>Thomas Jefferson National Accelerator Facility (JLab) in
the Fall of 2014. As</span><br>
<span>the first stage of this project, the HPS Test Run
apparatus was constructed and</span><br>
<span>operated in 2012 to demonstrate the experiment's
technical feasibility and to</span><br>
<span>confirm that the trigger rates and occupancies are as
expected. This paper</span><br>
<span>describes the HPS Test Run apparatus and readout
electronics and its</span><br>
<span>performance. In this setting, a heavy photon can be
identified as a narrow peak</span><br>
<span>in the e$^+$e$^-$ invariant mass spectrum, above the
trident background or as a</span><br>
<span>narrow invariant mass peak with a decay vertex displaced
from the production</span><br>
<span>target, so charged particle tracking and vertexing are
needed for its</span><br>
<span>detection. In the HPS Test Run, charged particles are
measured with a compact</span><br>
<span>forward silicon microstrip tracker inside a dipole
magnet. Electromagnetic</span><br>
<span>showers are detected in a PbW0$_{4}$ crystal calorimeter
situated behind the</span><br>
<span>magnet, and are used to trigger the experiment and
identify electrons and</span><br>
<span>positrons. Both detectors are placed close to the beam
line and split</span><br>
<span>top-bottom. This arrangement provides sensitivity to
low-mass heavy photons,</span><br>
<span>allows clear passage of the unscattered beam, and avoids
the spray of degraded</span><br>
<span>electrons coming from the target. The discrimination
between prompt and</span><br>
<span>displaced e$^+$e$^-$ pairs requires the first layer of
silicon sensors be</span><br>
<span>placed only 10~cm downstream of the target. The expected
signal is small, and</span><br>
<span>the trident background huge, so the experiment requires
very large statistics.</span><br>
<span>Accordingly, the HPS Test Run utilizes high-rate readout
and data acquisition</span><br>
<span>electronics and a fast trigger to exploit the
essentially 100% duty cycle of</span><br>
<span>the CEBAF accelerator at JLab.</span><br>
<span>\\</span><br>
<span></span><br>
<span></span><br>
<span>Contains:</span><br>
<span> 2012-101-PHOTON-DETECTOR-001.jpg: 353797 bytes</span><br>
<span> ECal.png: 89789 bytes</span><br>
<span> HPS_nochamber.jpg: 649009 bytes</span><br>
<span> IMG_5200.JPG: 2445145 bytes</span><br>
<span> author_list_hps_PAC39_compact_alphabetical_order.tex:
4216 bytes</span><br>
<span> ecal-module-schematic.png: 189529 bytes</span><br>
<span> elsarticle.cls: 26095 bytes</span><br>
<span>
h_cl_E_probedata_eff_bay_h_cl_E_probeMC_eff_bay_dataMC_1351-v7-trig-tagBot.pdf:
16850 bytes</span><br>
<span>
h_ep_data_0_h_ep_MC_0_dataMC_1351-v6-v6gains_2-trig-top-cl600reg0.pdf:
18198 bytes</span><br>
<span>
h_invM_h_invM_trigsel4hit_pair1351_twotrkfilt-v6-paper-mod.pdf:
17863 bytes</span><br>
<span>
h_sumE_h_sumE_trigsel4hit_pair1351_twotrkfilt-v6-paper.pdf:
16802 bytes</span><br>
<span>
h_trk_top_fr_conv_y_h_trk_top_conv_y_dataMC_twotrksel-mod.pdf:
18781 bytes</span><br>
<span>
h_trk_top_fr_conv_z_h_trk_top_conv_z_dataMC_twotrksel-mod.pdf:
17444 bytes</span><br>
<span>
h_trk_top_px_h_trk_top_px_trigsel4hit_pair1351_twotrkfilt-v6-paper-mod.pdf:
18294 bytes</span><br>
<span> hps-testrun-beamline-edited3.png: 136272 bytes</span><br>
<span> hps-testrun-nim.bbl: 9285 bytes</span><br>
<span> hps-testrun-nim.tex: 60893 bytes</span><br>
<span> hps-testrun-nim.toc: 1703 bytes</span><br>
<span> hps_testrun_rendering_2.jpeg: 205123 bytes</span><br>
<span> hps_trigger_cal.pdf: 64743 bytes</span><br>
<span> mip_top_layer_2.png: 52522 bytes</span><br>
<span> model1-num-names.bst: 28801 bytes</span><br>
<span> run1351_110513_samples_L1_top.pdf: 344374 bytes</span><br>
<span> run1351_time_residual_top_layer2.pdf: 21954 bytes</span><br>
<span> single_hit_efficiency.pdf: 14943 bytes</span><br>
<span> svt-daq-sketch.pdf: 100651 bytes</span><br>
<span> svt_daq_module.png: 559300 bytes</span><br>
<span></span><br>
<span></span><br>
</div>
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<pre wrap="">_______________________________________________
Hps mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Hps@jlab.org">Hps@jlab.org</a>
<a class="moz-txt-link-freetext" href="https://mailman.jlab.org/mailman/listinfo/hps">https://mailman.jlab.org/mailman/listinfo/hps</a>
</pre>
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