Friend, M. (2012) Upgraded photon calorimeter with integrating readout for the Hall A Compton polarimeter at Jefferson Lab. Il nuovo cimento C, 35 (4). pp. 137-139. ISSN 1826-9885
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Abstract
The photon arm of the Compton polarimeter in Hall A of Jefferson Lab has been upgraded to allow for electron beam polarization measurements with better than 1% accuracy. The data acquisition system (DAQ) now includes an integrating mode, which eliminates several systematic uncertainties inherent in the original counting-mode DAQ. The photon calorimeter has been replaced with a Cedoped Gd2SiO5 crystal, the bright output and fast response of which are ideal for measurements using the new integrating method. The upgraded system was used to continuously measure the electron beam polarization during HAPPEX-III, and the results of this high precision measurement are presented.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Other topics in elementary-particle and nuclear physics experimental methods and instrumentation |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 21 Apr 2020 18:39 |
| Last Modified: | 21 Apr 2020 18:39 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/17900 |
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