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Title: Design and construction of a high-energy photon polarimeter

Abstract

Here, we report on the design and construction of a high-energy photon polarimeter for measuring the degree of polarization of a linearly-polarized photon beam. The photon polarimeter uses the process of pair production on an atomic electron (triplet production). The azimuthal distribution of scattered atomic electrons following triplet production yields information regarding the degree of linear polarization of the incident photon beam. Furthermore, the polarimeter, operated in conjunction with a pair spectrometer, uses a silicon strip detector to measure the recoil electron distribution resulting from triplet photoproduction in a beryllium target foil. The analyzing power ΣA for the device using a 75 μm beryllium converter foil is about 0.2, with a relative systematic uncertainty in ΣA of 1.5%.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [2];  [3]
  1. Arizona State Univ., Tempe, AZ (United States)
  2. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  3. Univ. of Connecticut, Storrs, CT (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:
1372263
Alternate Identifier(s):
OSTI ID: 1550306
Report Number(s):
JLAB-PHY-17-2425; DOE/OR/23177-4164
Journal ID: ISSN 0168-9002; PII: S0168900217305715; TRN: US1702542
Grant/Contract Number:  
PHY-1306737; PHY-1508238; AC05-06OR23177
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: 867; Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; Polarized photon beam; Beam characteristics; Polarization measurement; Triplet photoproduction

Citation Formats

Dugger, M., Ritchie, B. G., Sparks, N., Moriya, K., Tucker, R. J., Lee, R. J., Thorpe, B. N., Hodges, T., Barbosa, F. J., Sandoval, N., and Jones, R. T. Design and construction of a high-energy photon polarimeter. United States: N. p., 2017. Web. doi:10.1016/j.nima.2017.05.026.
Dugger, M., Ritchie, B. G., Sparks, N., Moriya, K., Tucker, R. J., Lee, R. J., Thorpe, B. N., Hodges, T., Barbosa, F. J., Sandoval, N., & Jones, R. T. Design and construction of a high-energy photon polarimeter. United States. doi:10.1016/j.nima.2017.05.026.
Dugger, M., Ritchie, B. G., Sparks, N., Moriya, K., Tucker, R. J., Lee, R. J., Thorpe, B. N., Hodges, T., Barbosa, F. J., Sandoval, N., and Jones, R. T. Mon . "Design and construction of a high-energy photon polarimeter". United States. doi:10.1016/j.nima.2017.05.026. https://www.osti.gov/servlets/purl/1372263.
@article{osti_1372263,
title = {Design and construction of a high-energy photon polarimeter},
author = {Dugger, M. and Ritchie, B. G. and Sparks, N. and Moriya, K. and Tucker, R. J. and Lee, R. J. and Thorpe, B. N. and Hodges, T. and Barbosa, F. J. and Sandoval, N. and Jones, R. T.},
abstractNote = {Here, we report on the design and construction of a high-energy photon polarimeter for measuring the degree of polarization of a linearly-polarized photon beam. The photon polarimeter uses the process of pair production on an atomic electron (triplet production). The azimuthal distribution of scattered atomic electrons following triplet production yields information regarding the degree of linear polarization of the incident photon beam. Furthermore, the polarimeter, operated in conjunction with a pair spectrometer, uses a silicon strip detector to measure the recoil electron distribution resulting from triplet photoproduction in a beryllium target foil. The analyzing power ΣA for the device using a 75 μm beryllium converter foil is about 0.2, with a relative systematic uncertainty in ΣA of 1.5%.},
doi = {10.1016/j.nima.2017.05.026},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 867,
place = {United States},
year = {2017},
month = {6}
}

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