Experimental Results on Low Alpha Electron-Storage Rings

Journal Article · Mon Apr 01 04:00:00 EST 1996 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.50301· OSTI ID:288338

Robin, D ^[1]; Hama, H ^[2]; Nadji, A ^[3]

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1. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
2. UVSOR Facility, Institute for Molecular Science, 38 Myodaiji, Okazaki 444 (Japan)
3. LURE, Centre Universitaire de Paris-Sud, Bat. 209 A, 91405 Orsay Cedex (France)

We report on experiments performed in two synchrotron light sources, UVSOR and Super-ACO, where the momentum compaction factor is reduced in order to reduce the bunch length. By controlling the second-order momentum compaction factor, UVSOR and Super-ACO have managed to reduce the first-order momentum compaction factor by a a factor of 100. At low current the resulting bunch lengths are less than 10 ps, a factor of 10 smaller than normal. Measurements of current-dependent bunch lengthening in UVSOR are presented, and the cause of the bunch lengthening is determined to be potential-well distortion. We also show that by operating with a negative momentum compaction factor, Super-ACO has achieved shorter bunch lengthening and higher peak currents than at positive momentum compaction. {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 288338
• Report Number(s): CONF-9509227--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 367; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM BUNCHING
BEAM OPTICS
COMPACTING
ELECTRON BEAMS
RF SYSTEMS
STORAGE RINGS
SYNCHROTRON RADIATION