Upgraded photon calorimeter with integrating readout for the Hall A Compton polarimeter at Jefferson Lab

M. Friend, D. Parno, F. Benmokhtar, A. Camsonne, M. M. Dalton, G. B. Franklin, V. Mamyan, R. Michaels, S. Nanda, V. Nelyubin, K. Paschke, B. Quinn, A. Rakhman, P. Souder, A. Tobias

Research output: Contribution to journalArticle

23 Scopus citations

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 (DAQ) system now includes an integrating mode, which eliminates several systematic uncertainties inherent in the original counting-DAQ setup. The photon calorimeter has been replaced with a Ce-doped Gd 2SiO 5 crystal, which has a bright output and fast response, and works well for measurements using the new integrating method at electron beam energies from 1 to 6 GeV.

Original languageEnglish (US)
Pages (from-to)96-105
Number of pages10
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume676
DOIs
StatePublished - Jun 1 2012

Keywords

  • Compton polarimeter
  • Electron beam polarimetry
  • Integrating DAQ
  • Jefferson Laboratory

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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    Friend, M., Parno, D., Benmokhtar, F., Camsonne, A., Dalton, M. M., Franklin, G. B., Mamyan, V., Michaels, R., Nanda, S., Nelyubin, V., Paschke, K., Quinn, B., Rakhman, A., Souder, P., & Tobias, A. (2012). Upgraded photon calorimeter with integrating readout for the Hall A Compton polarimeter at Jefferson Lab. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 676, 96-105. https://doi.org/10.1016/j.nima.2012.02.041