A threshold gas Cerenkov detector for the spin asymmetries of the nucleon experiment
Abstract
In this study, we report on the design, construction, commissioning, and performance of a threshold gas Cerenkov counter in an open configuration, which operates in a high luminosity environment and produces a high photo-electron yield. Part of a unique open geometry detector package known as the Big Electron Telescope Array, this Cerenkov counter served to identify scattered electrons and reject produced pions in an inclusive scattering experiment known as the Spin Asymmetries of the Nucleon Experiment E07-003 at the Thomas Jefferson National Accelerator Facility (TJNAF) also known as Jefferson Lab. The experiment consisted of a measurement of double spin asymmetries A|| and A⊥ of a polarized electron beam impinging on a polarized ammonia target. The Cerenkov counter's performance is characterised by a yield of about 20 photoelectrons per electron or positron track. Thanks to this large number of photoelectrons per track, the Cerenkov counter had enough resolution to identify electron-positron pairs from the conversion of photons resulting mainly from π0 decays.
- Authors:
-
- Temple Univ., Philadelphia, PA (United States)
- Seoul National Univ. (Korea, Republic of)
- Temple Univ., Philadelphia, PA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1221592
- Alternate Identifier(s):
- OSTI ID: 1247194
- Report Number(s):
- JLAB-PHY-15-2020; DOE/OR/23177-3320; arXiv:1503.03138
Journal ID: ISSN 0168-9002; PII: S0168900215011055
- Grant/Contract Number:
- AC05-06OR23177; FG02-94ER4084
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
- Additional Journal Information:
- Journal Volume: 804; Journal ID: ISSN 0168-9002
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; threshold gas Cerenkov detector; SANE; particle identification
Citation Formats
Armstrong, Whitney R., Choi, Seonho, Kaczanowicz, Ed, Lukhanin, Alexander, Meziani, Zein -Eddine, and Sawatzky, Brad D. A threshold gas Cerenkov detector for the spin asymmetries of the nucleon experiment. United States: N. p., 2015.
Web. doi:10.1016/j.nima.2015.09.050.
Armstrong, Whitney R., Choi, Seonho, Kaczanowicz, Ed, Lukhanin, Alexander, Meziani, Zein -Eddine, & Sawatzky, Brad D. A threshold gas Cerenkov detector for the spin asymmetries of the nucleon experiment. United States. https://doi.org/10.1016/j.nima.2015.09.050
Armstrong, Whitney R., Choi, Seonho, Kaczanowicz, Ed, Lukhanin, Alexander, Meziani, Zein -Eddine, and Sawatzky, Brad D. Sat .
"A threshold gas Cerenkov detector for the spin asymmetries of the nucleon experiment". United States. https://doi.org/10.1016/j.nima.2015.09.050. https://www.osti.gov/servlets/purl/1221592.
@article{osti_1221592,
title = {A threshold gas Cerenkov detector for the spin asymmetries of the nucleon experiment},
author = {Armstrong, Whitney R. and Choi, Seonho and Kaczanowicz, Ed and Lukhanin, Alexander and Meziani, Zein -Eddine and Sawatzky, Brad D.},
abstractNote = {In this study, we report on the design, construction, commissioning, and performance of a threshold gas Cerenkov counter in an open configuration, which operates in a high luminosity environment and produces a high photo-electron yield. Part of a unique open geometry detector package known as the Big Electron Telescope Array, this Cerenkov counter served to identify scattered electrons and reject produced pions in an inclusive scattering experiment known as the Spin Asymmetries of the Nucleon Experiment E07-003 at the Thomas Jefferson National Accelerator Facility (TJNAF) also known as Jefferson Lab. The experiment consisted of a measurement of double spin asymmetries A|| and A⊥ of a polarized electron beam impinging on a polarized ammonia target. The Cerenkov counter's performance is characterised by a yield of about 20 photoelectrons per electron or positron track. Thanks to this large number of photoelectrons per track, the Cerenkov counter had enough resolution to identify electron-positron pairs from the conversion of photons resulting mainly from π0 decays.},
doi = {10.1016/j.nima.2015.09.050},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = ,
volume = 804,
place = {United States},
year = {Sat Sep 26 00:00:00 EDT 2015},
month = {Sat Sep 26 00:00:00 EDT 2015}
}
Web of Science
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Works referencing / citing this record:
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text, January 2018
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Design and performance of the spin asymmetries of the nucleon experiment
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