Diamond Detectors for Compton Polarimetry

Journal Article · Thu Dec 17 04:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3293886· OSTI ID:21325708

Martin, J W ^[1]; Dutta, D; Narayan, A ^[2]; Wang, P ^[3]

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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)

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.

• OSTI ID: 21325708
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1182; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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