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Title: Diamond Detectors for Compton Polarimetry

Abstract

Parity-violating electron scattering experiments aim to test the standard model of particle physics through precise low-energy determinations of the weak mixing angle. These experiments require determination of the polarization of the incident electron beam to the 1% level or better. An example of this type of experiment is the Q-weak experiment, which will be conducted in Hall C at Jefferson Lab in 2010 and beyond. We are constructing a Compton polarimeter in Hall C to provide continuous monitoring of the polarization with the goal of 1% absolute polarization determination. In our Compton polarimeter, circularly polarized laser light will impinge upon the electron beam. Electrons scattered by the Compton process will be momentum-analyzed in a dipole magnet downstream of the interaction point. A diamond strip tracker will be placed further downstream of the dipole to sense the Compton-scattered electrons and determine their momenta. The design of the polarimeter, focusing on electron detection, and our progress in prototyping and constructing the diamond strip tracker, are discussed.

Authors:
 [1]; ;  [2];  [3]
  1. Physics Department, University of Winnipeg, Winnipeg, MB, R3B 2E9 (Canada)
  2. Dept. of Physics and Astronomy, Mississippi State University, Mississippi State, MS 39762-5167 (United States)
  3. Department of Physics and Astronomy, University of Manitoba, Winnipeg, MB, R3T 2N2 (Canada)
Publication Date:
OSTI Identifier:
21325708
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1182; Journal Issue: 1; Conference: 10. conference on the intersections of particle and nuclear physics, San Diego, CA (United States), 26-31 May 2009; Other Information: DOI: 10.1063/1.3293886; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CEBAF ACCELERATOR; COMPTON EFFECT; DESIGN; DIAMONDS; DIELECTRIC TRACK DETECTORS; DIPOLES; ELECTRON BEAMS; ELECTRON DETECTION; ELECTRONS; LASER RADIATION; MAGNETS; PARITY; POLARIMETERS; POLARIMETRY; POLARIZATION; STANDARD MODEL; UNIFIED-FIELD THEORIES; WEINBERG ANGLE

Citation Formats

Martin, J W, Dutta, D, Narayan, A, and Wang, P. Diamond Detectors for Compton Polarimetry. United States: N. p., 2009. Web. doi:10.1063/1.3293886.
Martin, J W, Dutta, D, Narayan, A, & Wang, P. Diamond Detectors for Compton Polarimetry. United States. https://doi.org/10.1063/1.3293886
Martin, J W, Dutta, D, Narayan, A, and Wang, P. 2009. "Diamond Detectors for Compton Polarimetry". United States. https://doi.org/10.1063/1.3293886.
@article{osti_21325708,
title = {Diamond Detectors for Compton Polarimetry},
author = {Martin, J W and Dutta, D and Narayan, A and Wang, P},
abstractNote = {Parity-violating electron scattering experiments aim to test the standard model of particle physics through precise low-energy determinations of the weak mixing angle. These experiments require determination of the polarization of the incident electron beam to the 1% level or better. An example of this type of experiment is the Q-weak experiment, which will be conducted in Hall C at Jefferson Lab in 2010 and beyond. We are constructing a Compton polarimeter in Hall C to provide continuous monitoring of the polarization with the goal of 1% absolute polarization determination. In our Compton polarimeter, circularly polarized laser light will impinge upon the electron beam. Electrons scattered by the Compton process will be momentum-analyzed in a dipole magnet downstream of the interaction point. A diamond strip tracker will be placed further downstream of the dipole to sense the Compton-scattered electrons and determine their momenta. The design of the polarimeter, focusing on electron detection, and our progress in prototyping and constructing the diamond strip tracker, are discussed.},
doi = {10.1063/1.3293886},
url = {https://www.osti.gov/biblio/21325708}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1182,
place = {United States},
year = {Thu Dec 17 00:00:00 EST 2009},
month = {Thu Dec 17 00:00:00 EST 2009}
}