Orbit and Optics Distortion in a Nonscaling Muon FFAG
Abstract
Finite chromaticity in a nonscaling FFAG makes transverse tunes move during acceleration. Particles have to cross many integer and half-integer resonances although all those tunes are imperfection ones. Plausible argument is that the acceleration is so fast that effects of those resonance crossings are marginal. We did a tracking study in a lattice with alignment and gradient errors to see how the orbit and optics distortion is excited. We found that in a time scale of the muon acceleration, namely total tune changes about one unit per turn, the resonance is not a proper way to describe the beam dynamics. Instead, a random walk model, in which we assume that alignment and gradient errors kick a particle randomly in phase space, well explains the tracking results.
- Authors:
-
- ASTeC, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, (United Kingdom)
- Publication Date:
- OSTI Identifier:
- 21055354
- Resource Type:
- Journal Article
- Journal Name:
- AIP Conference Proceedings
- Additional Journal Information:
- Journal Volume: 981; Journal Issue: 1; Conference: NuFact 07: 9. international workshop on neutrino factories, superbeams and beta beams, Okayama (Japan), 6-11 Aug 2007; Other Information: DOI: 10.1063/1.2898975; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; ACCELERATION; ALIGNMENT; BEAM DYNAMICS; BEAM PRODUCTION; GRAPH THEORY; MUON BEAMS; MUONS; PHASE SPACE; RESONANCE
Citation Formats
Machida, Shinji. Orbit and Optics Distortion in a Nonscaling Muon FFAG. United States: N. p., 2008.
Web. doi:10.1063/1.2898975.
Machida, Shinji. Orbit and Optics Distortion in a Nonscaling Muon FFAG. United States. https://doi.org/10.1063/1.2898975
Machida, Shinji. 2008.
"Orbit and Optics Distortion in a Nonscaling Muon FFAG". United States. https://doi.org/10.1063/1.2898975.
@article{osti_21055354,
title = {Orbit and Optics Distortion in a Nonscaling Muon FFAG},
author = {Machida, Shinji},
abstractNote = {Finite chromaticity in a nonscaling FFAG makes transverse tunes move during acceleration. Particles have to cross many integer and half-integer resonances although all those tunes are imperfection ones. Plausible argument is that the acceleration is so fast that effects of those resonance crossings are marginal. We did a tracking study in a lattice with alignment and gradient errors to see how the orbit and optics distortion is excited. We found that in a time scale of the muon acceleration, namely total tune changes about one unit per turn, the resonance is not a proper way to describe the beam dynamics. Instead, a random walk model, in which we assume that alignment and gradient errors kick a particle randomly in phase space, well explains the tracking results.},
doi = {10.1063/1.2898975},
url = {https://www.osti.gov/biblio/21055354},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 981,
place = {United States},
year = {Thu Feb 21 00:00:00 EST 2008},
month = {Thu Feb 21 00:00:00 EST 2008}
}