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High energy gamma ray beams from compton backscattered laser light

Conference · · IEEE Trans. Nucl. Sci.; (United States)
OSTI ID:5554646
Collisions of light photons with relativistic electrons have previously been used to produce polarized ..gamma..-ray beams with modest (about 10%) resolution but relatively low intensity. In contrast, the LEGS project (Laser+Electron Gamma Source) at Brookhaven will produce a very high flux (> 2 x 10/sup 7/ s/sup -1/) of background-free polarized ..gamma.. rays whose energy will be determined to a high accuracy (..delta..EPSILON = 2.3 MeV). Initially, 300(420) MeV ..gamma.. rays will be produced by backscattering UV light from the new 2.5(3.0) GeV X-ray storage ring of the National Synchrotron Light Source (NSLS). The LEGS facility will operate as one of many passive users of the NSLS. In a later stage of the project, a Free Electron Laser is expected to extend the ..gamma..-ray energy up to 700 MeV.
Research Organization:
Phys. Dept., Brookhaven Nat.'l Lab., Upton, NY 11973
DOE Contract Number:
AC02-76CH00016
OSTI ID:
5554646
Report Number(s):
CONF-830311-
Conference Information:
Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: NS-30:4
Country of Publication:
United States
Language:
English