An overview of how parity-violating electron scattering experiments are performed at CEBAF

被引：6
|
作者：
Adderley P.A. [1 ]
Bullard D. [1 ]
Chao Y.C. [2 ]
Garcia C.H. [1 ]
Grames J. [1 ]
Hansknecht J. [1 ]
Hofler A. [1 ]
Kazimi R. [1 ]
Musson J. [1 ]
Palatchi C. [3 ]
Paschke K. [3 ]
Poelker M. [1 ]
Smith G. [1 ]
Stutzman M.L. [1 ]
Suleiman R. [1 ]
Wang Y. [1 ]
机构：
[1] Thomas Jefferson National Accelerator Facility, Newport News, 23606, VA
[2] Fermi National Accelerator Laboratory, Batavia, 60510, IL
[3] University of Virginia, Charlottesville, 22903, VA
来源：
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2023年 / 1046卷
关键词：
Accelerator-based methods for conducting parity violation experiments; Parity violating electron scattering; Parity violation;
D O I：
10.1016/j.nima.2022.167710
中图分类号：
学科分类号：
摘要：
Parity-violating electron-scattering experiments represent an important focus of the nuclear physics experimental program at the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab. These experiments pose significant challenges because the scattering asymmetries can be very small, of the order parts-per-million and smaller. To succeed, the properties of the electron beam such as current, position, size and energy, must be very nearly identical in the two electron-polarization spin states (parallel and anti-parallel relative to the direction of beam motion at the scattering target). This paper describes the origins of unwanted helicity-correlated beam asymmetries present on the electron beam and methods to minimize them to acceptable levels. © 2022 The Author(s)
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