High-Precision Resonant Cavity Beam Position, Emittance And Third-Moment Monitors

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Description

Linear colliders and FEL facilities need fast, nondestructive beam position and profile monitors to facilitate machine tune-up, and for use with feedback control. FAR-TECH, Inc., in collaboration with SLAC, is developing a resonant cavity diagnostic to simultaneously measure the dipole, quadrupole and sextupole moments of the beam distribution. Measurements of dipole and quadrupole moments at multiple locations yield information about beam orbit and emittance. The sextupole moment can reveal information about beam asymmetry which is useful in diagnosing beam tail deflections caused by short-range dipole wakefields. In addition to the resonance enhancement of a single-cell cavity, use of a multi-cell ... continued below

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3 pages

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Barov, N.; Kim, J. S.; Weidemann, A. W.; Miller, R. H. & Nantista, C. D. March 14, 2006.

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Linear colliders and FEL facilities need fast, nondestructive beam position and profile monitors to facilitate machine tune-up, and for use with feedback control. FAR-TECH, Inc., in collaboration with SLAC, is developing a resonant cavity diagnostic to simultaneously measure the dipole, quadrupole and sextupole moments of the beam distribution. Measurements of dipole and quadrupole moments at multiple locations yield information about beam orbit and emittance. The sextupole moment can reveal information about beam asymmetry which is useful in diagnosing beam tail deflections caused by short-range dipole wakefields. In addition to the resonance enhancement of a single-cell cavity, use of a multi-cell standing-wave structure further enhances signal strength and improves the resolution of the device. An estimated resolution is better than 1 {micro}m in rms beam size and better than 1 nm in beam position.

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3 pages

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  • Prepared for Particle Accelerator Conference (PAC 05), Knoxville, Tennessee, 16-20 May 2005

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  • Report No.: SLAC-PUB-11758
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 877442
  • Archival Resource Key: ark:/67531/metadc879944

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  • March 14, 2006

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  • Sept. 21, 2016, 2:29 a.m.

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  • Aug. 1, 2017, 1:38 p.m.

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Barov, N.; Kim, J. S.; Weidemann, A. W.; Miller, R. H. & Nantista, C. D. High-Precision Resonant Cavity Beam Position, Emittance And Third-Moment Monitors, article, March 14, 2006; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc879944/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.