[Hps] Fwd: arXiv New submission -> 1406.6115 in physics.ins-det from phansson at slac.stanford.edu

Tue Jun 24 22:43:35 EDT 2014

Hi All,

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.

Thanks,

/Pelle

Begin forwarded message:

From: "e-prints at arxiv.org<mailto:e-prints at arxiv.org>" <e-prints at arxiv.org<mailto:e-prints at arxiv.org>>
Date: June 24, 2014 at 17:13:07 PDT
To: "Hansson Adrian, Per Ola" <phansson at slac.stanford.edu<mailto:phansson at slac.stanford.edu>>
Subject: arXiv New submission -> 1406.6115 in physics.ins-det from phansson at slac.stanford.edu<mailto:phansson at slac.stanford.edu>
Reply-To: "help at arxiv.org<mailto:help at arxiv.org>" <help at arxiv.org<mailto:help at arxiv.org>>

Your submission submit/1007032 has been assigned the permanent arXiv
identifier 1406.6115 and is available at:

http://arxiv.org/abs/1406.6115

The paper password for this article is: xm9cp
Please share this with your co-authors. They may use it to claim
ownership.

Abstract will appear in today's mailing as:
------------------------------------------------------------------------------
\\
arXiv:1406.6115
From: Per Hansson Adrian <phansson at slac.stanford.edu<mailto:phansson at slac.stanford.edu>>
Date: Tue, 24 Jun 2014 00:51:56 GMT   (5017kb,D)

Title: The Heavy Photon Search Test Detector
Authors: Marco Battaglieri, Sergey Boyarinov, Stephen Bueltmann, Volker
 Burkert, Andrea Celentano, Gabriel Charles, William Cooper, Chris Cuevas,
 Natalia Dashyan, Raffaella DeVita, Camille Desnault, Alexandre Deur, Hovanes
 Egiyan, Latifa Elouadrhiri, Rouven Essig, Vitaliy Fadeyev, Clive Field, Arne
 Freyberger, Yuri Gershtein, Nerses Gevorgyan, Francois-Xavier Girod, Norman
 Graf, Matthew Graham, Keith Griffioen, Alexander Grillo, Michel Guidal,
 Gunther Haller, Per Hansson Adrian, Ryan Herbst, Maurik Holtrop, John Jaros,
 Scott Kaneta, Mahbub Khandaker, Alexey Kubarovsky, Valery Kubarovsky, Takashi
 Maruyama, Jeremy McCormick, Ken Moffeit, Omar Moreno, Homer Neal, Timothy
 Nelson, Silvia Niccolai, Al Odian, Marco Oriunno, Rafayel Paremuzyan, Richard
 Partridge, Sarah Phillips, Emmanuel Rauly, Benjamin Raydo, Joseph Reichert,
 Emmanuel Rindel, Philippe Rosier, Carlos Salgado, Philip Schuster, Youri
 Sharabian, Daria Sokhan, Stepan Stepanyan, Natalia Toro, Sho Uemura, Maurizio
 Ungaro, Hakop Voskanyan, Dieter Walz, Larry Weinstein, Bogdan Wojtsekhowski
Categories: physics.ins-det hep-ex
Comments: 15 pages, 18 figures, to be published in Nuclear Instruments and
 Methods in Physics Research Section A, editor: Per Hansson Adrian
Report-no: SLAC-PUB-15999
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
\\
 The Heavy Photon Search (HPS), an experiment to search for a hidden sector
photon in fixed target electroproduction, is preparing for installation at the
Thomas Jefferson National Accelerator Facility (JLab) in the Fall of 2014. As
the first stage of this project, the HPS Test Run apparatus was constructed and
operated in 2012 to demonstrate the experiment's technical feasibility and to
confirm that the trigger rates and occupancies are as expected. This paper
describes the HPS Test Run apparatus and readout electronics and its
performance. In this setting, a heavy photon can be identified as a narrow peak
in the e$^+$e$^-$ invariant mass spectrum, above the trident background or as a
narrow invariant mass peak with a decay vertex displaced from the production
target, so charged particle tracking and vertexing are needed for its
detection. In the HPS Test Run, charged particles are measured with a compact
forward silicon microstrip tracker inside a dipole magnet. Electromagnetic
showers are detected in a PbW0$_{4}$ crystal calorimeter situated behind the
magnet, and are used to trigger the experiment and identify electrons and
positrons. Both detectors are placed close to the beam line and split
top-bottom. This arrangement provides sensitivity to low-mass heavy photons,
allows clear passage of the unscattered beam, and avoids the spray of degraded
electrons coming from the target. The discrimination between prompt and
displaced e$^+$e$^-$ pairs requires the first layer of silicon sensors be
placed only 10~cm downstream of the target. The expected signal is small, and
the trident background huge, so the experiment requires very large statistics.
Accordingly, the HPS Test Run utilizes high-rate readout and data acquisition
electronics and a fast trigger to exploit the essentially 100% duty cycle of
the CEBAF accelerator at JLab.
\\

Contains:
2012-101-PHOTON-DETECTOR-001.jpg: 353797 bytes
ECal.png: 89789 bytes
HPS_nochamber.jpg: 649009 bytes
IMG_5200.JPG: 2445145 bytes
author_list_hps_PAC39_compact_alphabetical_order.tex: 4216 bytes
ecal-module-schematic.png: 189529 bytes
elsarticle.cls: 26095 bytes
h_cl_E_probedata_eff_bay_h_cl_E_probeMC_eff_bay_dataMC_1351-v7-trig-tagBot.pdf: 16850 bytes
h_ep_data_0_h_ep_MC_0_dataMC_1351-v6-v6gains_2-trig-top-cl600reg0.pdf: 18198 bytes
h_invM_h_invM_trigsel4hit_pair1351_twotrkfilt-v6-paper-mod.pdf: 17863 bytes
h_sumE_h_sumE_trigsel4hit_pair1351_twotrkfilt-v6-paper.pdf: 16802 bytes
h_trk_top_fr_conv_y_h_trk_top_conv_y_dataMC_twotrksel-mod.pdf: 18781 bytes
h_trk_top_fr_conv_z_h_trk_top_conv_z_dataMC_twotrksel-mod.pdf: 17444 bytes
h_trk_top_px_h_trk_top_px_trigsel4hit_pair1351_twotrkfilt-v6-paper-mod.pdf: 18294 bytes
hps-testrun-beamline-edited3.png: 136272 bytes
hps-testrun-nim.bbl: 9285 bytes
hps-testrun-nim.tex: 60893 bytes
hps-testrun-nim.toc: 1703 bytes
hps_testrun_rendering_2.jpeg: 205123 bytes
hps_trigger_cal.pdf: 64743 bytes
mip_top_layer_2.png: 52522 bytes
model1-num-names.bst: 28801 bytes
run1351_110513_samples_L1_top.pdf: 344374 bytes
run1351_time_residual_top_layer2.pdf: 21954 bytes
single_hit_efficiency.pdf: 14943 bytes
svt-daq-sketch.pdf: 100651 bytes
svt_daq_module.png: 559300 bytes

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