Observation of transverse space charge effects in a multi-beamlet electron bunch produced in a photo-emission electron source.

Conference · Thu Jan 01 00:00:00 EST 2009

OSTI ID:958029

Gai, W; Power, J G; Yusof, Z; Rihaoui, M; Piot, P; FNAL,

A 'multiple beamlet' experiment aimed at investigating the transverse space charge effect was recently conducted at the Argonne Wakefield Accelerator. The experiment generated a symmetric pattern of 5 beamlets on the photocathode of the RF gun with the drive laser. We explored the evolution of the thereby produced 5 MeV, space-charge dominated electron beamlets in the 2 m drift following the RF photocathode gun for various external focusing. Two important effects were observed and benchmarked using the particle-in-cell beam dynamics code Impact-T. In this paper, we present our experimental observation and their benchmarking with Impact-T.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC); ED; Northern Illinois Univ.; Fermi Research Alliance
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 958029
• Report Number(s): ANL-HEP-CP-08-71; TRN: US1000426
• Resource Relation: Conference: 13th Advanced Accelerator Concepts Workshop (AAC08); Jul. 27, 2008 - Aug. 2, 2008; Santa Cruz, CA
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
BEAM DYNAMICS
ELECTRON SOURCES
ELECTRONS
FOCUSING
PHOTOCATHODES
SPACE CHARGE
WAKEFIELD ACCELERATORS