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Suppression of betatron oscillation excitation (R.F. knockout) by the R.F. accelerating system of a fixed field accelerator

Technical Report ·
DOI:https://doi.org/10.2172/4330983· OSTI ID:4330983
 [1]
  1. Univ. of Illinois at Urbana-Champaign, IL (United States); Midwestern Universities Research Association (MURA), Madison, WI (United States)
Two recent suggestions for avoiding radio frequency knock-out of a beam due to R.F. excitation of betatron oscillations are discussed. The first is the use of two cavities tipped to give electric fields at angles with the equilibrium orbits and spaced so that radians of betatron oscillation can occur between them (see paper for formulas). The R.F. phase must travel from one cavity to the other with the speed of the stacked particles. The second suggestion is that it is possible to turn off the cavity voltage briefly while it is passing the R.F.K.O frequency without losing an appreciable number of particles and probably without enlarging the dimensions of the stacked beams seriously.
Research Organization:
Midwestern Universities Research Association (MURA), Madison, WI (United States)
Sponsoring Organization:
US Atomic Energy Commission (AEC)
NSA Number:
NSA-12-008786
OSTI ID:
4330983
Report Number(s):
MURA--215
Country of Publication:
United States
Language:
English