Title :
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
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;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.309585
