Electron Micro-Bunch Generation from RF Photoinjectors

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

DOI:https://doi.org/10.1063/1.50292· OSTI ID:288332

Serafini, L; Zhang, R; Pellegrini, C ^[1]

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1. Department of Physics, UCLA, Los Angeles, California 90024 (United States)

In this paper we discuss how the injector specifications of a 2nd-generation plasma beat wave accelerator (PBWA) experiment can be achieved by a photo-injector. Typical required bunch lengths (FWHM) are 50 microns with 15 pC bunch charge. We analyze the possibility of generating such short electron bunches directly from a photoinjector by illuminating a photocathode in an RF electron gun with a phase-locked 160-fs laser pulse. In particular, we address all de-bunching effects taking place during acceleration and transport through the photo-injector. We provide a set of analytical scaling laws, as well as a comparison with detailed simulations of the beam dynamics. The possible performances of the present SATURNUS linac setup are presented, as well as the anticipated capabilities of a multi-cell RF gun structure based on the PWT linac presently in operation at UCLA. {copyright} {ital 1996 American Institute of Physics.}

• DOE Contract Number: FG03-92ER40693
• OSTI ID: 288332
• 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
BEAT WAVE ACCELERATORS
COMPUTER CODES
ELECTRON BEAM INJECTION
ELECTRON GUNS
LASER RADIATION
PHOTOCATHODES
SCALING LAWS