Design of a merging beamlet pre-accelerator for an electrostatic quadrupole accelerator (ESQ)

Author

Chan, C.F. ; Vella, M.C.

Author_Institution

Lawrence Berkeley Lab., CA, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

3157

Abstract

An experiment is planned to merge 200 mA of multibeamlet H^- at 100 keV into a single channel electrostatic quadrupole accelerator (ESQ), which will boost the beam to 200 kV. The experiment is a collaboration based on a Japan Atomic Energy Research Institute (JAERI) volume H^- plasma source and focused multi-aperture extractor, mated to the LBL 200 kV prototype ESQ. A 2D particle code (WOLF) has been used to design a merging beamlet pre-accelerator. The key merging elements are a focus ring to enhance the focusing of the extractor and a gradient grid to produce a merged beam profile which matches ESQ acceptance and minimizes emittance growth

Keywords

beam handling techniques; electrostatic accelerators; ion accelerators; linear accelerators; 100 keV; 200 kV; H; H^-; WOLF; acceptance; electrostatic quadrupole accelerator; emittance growth; focused multi-aperture extractor; merging beamlet pre-accelerator; volume H^- plasma source; Apertures; Electrostatics; Ion accelerators; Ion beams; Merging; Particle accelerators; Particle beams; Plasma accelerators; Plasma sources; Prototypes;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.309585

Filename

309585