Cherenkov radiation of e+ e- pairs and its application for the measurement of gamma-quanta beam polarization
Yerevan Physics Institute, Armenia
2 CERN, Geneva, Switzerland
Accepted: 7 March 1996
The dependence of the Cherenkov radiation intensity of pairs produced by high-energy γ-quanta on the distance z from the pair production point, the radiator thickness L, and the azimuthal angle φ of the observation point from the γ-quanta linear polarization direction is calculated, taking into account the multiple scattering. It is shown that the measurement of the γ-quanta polarization by detection of the expected φ-asymmetry with the help of a RICH detector is easier than with other existing or proposed methods.
PACS: 41.60.Bq – Cherenkov radiation / 29.40.Ka – Cherenkov detectors / 29.27.Hj – Polarized beams
© EDP Sciences, 1996