A Pair Polarimeter for Linearly Polarized High Energy Photons
Electron-positron pair production, the main process for high energy photon interaction with matter, has a large analyzing power for linear polarized photons. Our calculations show that in the GeV energy range a compact polarimeter based on silicon micro-strip detectors is feasible. We calculated the cross section as a function of the angle between the polarization plane and the line between positron and electron positions in the detector. For a thin radiator and equal energies of the positron and electron, the ratio sigma{parallel}/sigma{perpendicular} is about 1.6. At a beam intensity of 10{sup 6} photons per second a polarization measurement with a 1% statistical accuracy will require less than one hour of data taking.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 803299
- Report Number(s):
- JLAB-PHY-02-38; DOE/ER/40150-2289
- Country of Publication:
- United States
- Language:
- English
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A Pair Polarimeter for Linearly Polarized High Energy Photons
Design and construction of a high-energy photon polarimeter