Calculation of Polarization Effects
نویسنده
چکیده
In a proton synchrotron, a polarized beam is injected and then accelerated with its polarization parallel to the guiding magnetic field. If particles see only the guiding field, then there will be no depolarization effects. But perturbing magnetic fields, such as the quadrupole magnetic fields seen by an off--axis particle, will cause the particle spin to deviate from the vertical direction jr. This spin deviation will then precess around fi with 8 precession frequency a~/,,, where frev is the revolution frequency, 7 is the Lorentz energy factor and a is a fundamental constant given by
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تاریخ انتشار 1999