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Static and dynamic imperfection resonance methods to produce circularly polarized photon beams in electron synchrotrons and polarization asymmetries in e/sup +/, e/sup -/ storage rings

Conference · · AIP (Am. Inst. Phys.) Conf. Proc.; (United States)
OSTI ID:7215501
In an electron synchrotron, non-linear radial stationary low magnetic fields, introduced inside the equilibrium orbit, can be used to turn the vertical beam-polarization into the horizontal plane at an energy corresponding to an imperfection resonance. The electrons approach the resonance energy while spiraling inward, so that the initial vertical polarization results in a longitudinal polarization at the resonance radius and at specific azimuthal locations. In a storage ring, pulsed high longitudinal magnetic fields, operated in synchronism with the (n + 1/2)'th harmonic of the revolution period, can be used to depolarize one e/sup -//sup (+)/ bunch, leaving the e/sup +//sup (-)/ bunch still unaffected.
Research Organization:
Laboratori Nazionali de Frascati, Italy
OSTI ID:
7215501
Conference Information:
Journal Name: AIP (Am. Inst. Phys.) Conf. Proc.; (United States) Journal Volume: 12
Country of Publication:
United States
Language:
English