Measurement of photon statistics of wiggler radiation from an electron storage ring
Abstract
The number of visible photons emitted by an electron bunch moving through a wiggler in the Brookhaven Synchrotron Light Source storage ring was repetitively measured using an analog photon counting technique, and the photon counting distribution, which is the probability of finding n photons versus n, was obtained. The photoelectroncounting distribution of detected spontaneous light from the wiggler obeys a negativebinomial distribution consistent with a multielectron, multimode description of the light generation process. In the absence of the wiggler, the bendingmagnet light emerging from the pyrex exit port obeys the Neyman typeA distribution.
 Publication:

Nuclear Instruments and Methods in Physics Research A
 Pub Date:
 July 1991
 DOI:
 10.1016/01689002(91)90824A
 Bibcode:
 1991NIMPA.304...77T