Electron beam depolarization in a damping ring

Conference · Thu Apr 01 04:00:00 EST 1993

OSTI ID:10186161

Minty, M

Depolarization of a polarized electron beam injected into a damping ring is analyzed by extending calculations conventionally applied to proton synchrotrons. Synchrotron radiation in an electron ring gives rise to both polarizing and depolarizing effects. In a damping ring, the beam is stored for a time much less than the time for self polarization. Spin flip radiation may therefore be neglected. Synchrotron radiation without spin flips, however, must be considered as the resonance strength depends on the vertical betatron oscillation amplitude which changes as the electron beam is radiation damped. An expression for the beam polarization at extraction is derived which takes into account radiation damping. The results are applied to the electron ring at the Stanford Linear Collider and are compared with numerical matrix formalisms.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 10186161
• Report Number(s): SLAC-PUB--6114; CONF-930511--408; ON: DE93040962
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200
BEAM DYNAMICS, FIELD CALCULATIONS, AND ION OPTICS
BEAM INJECTION
DAMPING
DEPOLARIZATION
ELECTRON BEAMS
POLARIZED BEAMS
SPIN ORIENTATION
SYNCHROTRONS