BEAM HALO IN PROTON LINAC BEAMS
Abstract
In this paper we review the present picture of km halo in proton linacs. Space-charge forces acting in mismatched beams have been identified as a major cause of beam-halo. We present a definition of halo based on a ratio of moments of the distribution of the beam coordinates. We find from our initial studies that for halo detined in this way, a beam can have rms emittance growth without halo growth, but halo growth is always accompanied by rms emittance growth. We describe the beam-halo experiment that is in preparation at Los Alamos, which will address questions about the beam profiles, maximum particle amplitudes, and rms emittance growth associated with the halo.
- Authors:
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- US Department of Energy (US)
- OSTI Identifier:
- 768783
- Report Number(s):
- LA-UR-00-3792
TRN: US0102934
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Conference
- Resource Relation:
- Conference: LINAC 2000 Conference, Monterey, CA (US), 08/21/2000--08/25/2000; Other Information: PBD: 1 Aug 2000
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; BEAM PROFILES; LINEAR ACCELERATORS; PROTON BEAMS; BEAM EMITTANCE; BEAM DYNAMICS
Citation Formats
WANGLER, T, and CRANDALL, K. BEAM HALO IN PROTON LINAC BEAMS. United States: N. p., 2000.
Web.
WANGLER, T, & CRANDALL, K. BEAM HALO IN PROTON LINAC BEAMS. United States.
WANGLER, T, and CRANDALL, K. 2000.
"BEAM HALO IN PROTON LINAC BEAMS". United States. https://www.osti.gov/servlets/purl/768783.
@article{osti_768783,
title = {BEAM HALO IN PROTON LINAC BEAMS},
author = {WANGLER, T and CRANDALL, K},
abstractNote = {In this paper we review the present picture of km halo in proton linacs. Space-charge forces acting in mismatched beams have been identified as a major cause of beam-halo. We present a definition of halo based on a ratio of moments of the distribution of the beam coordinates. We find from our initial studies that for halo detined in this way, a beam can have rms emittance growth without halo growth, but halo growth is always accompanied by rms emittance growth. We describe the beam-halo experiment that is in preparation at Los Alamos, which will address questions about the beam profiles, maximum particle amplitudes, and rms emittance growth associated with the halo.},
doi = {},
url = {https://www.osti.gov/biblio/768783},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 01 00:00:00 EDT 2000},
month = {Tue Aug 01 00:00:00 EDT 2000}
}
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