Velocity bunching experiment at the Neptune laboratory

Author

Musumeci, P. ; Yoder, R. ; Rosenzweig, J.B.

Author_Institution

Dept. of Phys. & Astron., California Univ., Los Angeles, CA, USA

Volume

3

fYear

2003

fDate

12-16 May 2003

Firstpage

2117

Abstract

In this paper we describe the rectilinear compression experiment at the Neptune photoinjector at UCLA. The electron bunches have been shortened to sub-ps pulse length by chirping the beam energy spectrum in a short S-band high gradient standing wave RF cavity and then letting the electrons undergo velocity compression in the following rectilinear drift. Using a standard Martin Puplett interferometer to characterize coherent transition radiation from the beam, we measured bunch lengths as short as 0.4 ps with compression ratio in excess of 10 for an electron beam of 7 MeV energy and charge up to 300 pC.

Keywords

accelerator RF systems; accelerator cavities; electron accelerators; electron beams; interferometers; particle beam bunching; particle beam injection; 0.4 ps; 7 MeV; Neptune laboratory; Neptune photoinjector; S-band high gradient standing wave RF cavity; beam energy spectrum; bunch lengths; coherent transition radiation; compression ratio; electron beam; electron bunches; pulse length; rectilinear compression experiment; rectilinear drift; standard Martin Puplett interferometer; velocity bunching experiment; velocity compression; Charge measurement; Chirp; Current measurement; Electron beams; Energy measurement; Laboratories; Length measurement; Measurement standards; Pulse compression methods; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the

ISSN

1063-3928

Print_ISBN

0-7803-7738-9

Type

conf

DOI

10.1109/PAC.2003.1288802

Filename

1288802