Eur. Phys. J. A (2004) 19: 275-278
https://doi.org/10.1140/epjad/s2004-03-045-5

Laboratory physics programs and new facilities

A pair polarimeter for linearly polarized high energy photons

¹ Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
² University of South Carolina, Columbia, SC 29208, USA
³ North Carolina Central University, Durham, NC 27707, USA
⁴ Canadian Light Source, University of Saskatchewan, Saskatoon, Canada
⁵ The George Washington University, Washington, DC 20064, USA
⁶ Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
⁷ Norfolk State University, Norfolk, VA 23504, USA
⁸ CERN EP Division, 121 Geneva 23, Switzerland
⁹ Japan Atomic Energy Research Institute, Mikazuki, Hyogo 679-5148, Japan

Received: 1 August 2003
Published online: 12 February 2004

Abstract

A high quality beam of linearly polarized photons of several GeV will become available with the coherent bremsstrahlung technique at JLab. We have developed a polarimeter which requires about two meters of the beam line, has an analyzing power of 20% and an efficiency of 0.02%. The layout and first results of a polarimeter test on the laser back-scattering photon beam at SPring-8/LEPS are presented.