Published November 18, 2002
| Version v1
Journal article
Beam-halo measurements in high-current proton beams
Creators
- 1. Los Alamos National Laboratory, Los Alamos, New Mexico 87544 (United States)
- 2. TechSource, Santa Fe, New Mexico 87594-1057 (United States)
- 3. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
- 4. General Atomics, Los Alamos, New Mexico 87545 (United States)
Description
We present results from an experimental study of the beam halo in a high-current 6.7-MeV proton beam propagating through a 52-quadrupole periodic-focusing channel. The gradients of the first four quadrupoles were independently adjusted to match or mismatch the injected beam. Emittances and beamwidths were obtained from measured profiles for comparisons with maximum emittance-growth predictions of a free-energy model and maximum halo-amplitude predictions of a particle-core model. The experimental results support both models and the present theoretical picture of halo formation
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 89
- Journal Issue
- 21
- Journal Page Range
- p. 214802-214802.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 35027930
- Subject category
- S43: PARTICLE ACCELERATORS;
- Descriptors DEI
- BEAM DYNAMICS; BEAM FOCUSING MAGNETS; BEAM OPTICS; FREE ENERGY; PROTON BEAMS; QUADRUPOLE MOMENTS
- Descriptors DEC
- BEAMS; DYNAMICS; ENERGY; EQUIPMENT; MAGNETS; MECHANICS; NUCLEON BEAMS; PARTICLE BEAMS; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES
Optional Information
- Notes
- (c) 2002 The American Physical Society