Quasicrystalline Beam Formation in RF Photoinjectors

Journal Article · Thu Jan 22 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3080986· OSTI ID:21255297

Rosenzweig, J B; Dunning, M P; Hemsing, Erik; Marcus, G; Marinelli, Agostino; Musumeci, Pietro; Pham, A ^[1]; Ferrario, M ^[2]

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1. UCLA Dept. of Physics and Astronomy, Los Angeles, CA 90034 (United States)
2. INFN-Laboratori Nazionali di Frascati, Frascati, Roma (Italy)

The recent observation of coherent optical transition radiation at the LCLS has raised serious questions concerning the present model of beam dynamics in RF photoinjectors. We present here an analysis of what we term quasicrystalline beam formation. In this scenario, the low longitudinal temperature, in combination with strong acceleration and temporal rearrangement due to bending, allows the longitudinal beam dimension to become more regular, on the microscopic scale of optical wavelengths, than expected from equilibrium statistical properties. This beam distribution then may then display a strong degree of coherence in its optical transition radiation output. We discuss further experimental investigations of this phenomenon.

• OSTI ID: 21255297
• Journal Information: AIP Conference Proceedings, Vol. 1086, Issue 1; Conference: 13. advanced accelerator concepts workshop, Santa Cruz, CA (United States), 27 Jul - 2 Aug 2008; Other Information: DOI: 10.1063/1.3080986; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATION
BEAM DYNAMICS
EQUILIBRIUM
MICROWAVE RADIATION
SYNCHROTRON RADIATION
TRANSITION RADIATION
WAVELENGTHS