Performance of the new AGS RFQ preinjector

Author

Alessi, J.G. ; Brennan, J.M. ; Brodowski, J. ; Brown, H.N. ; Kponou, A. ; LoDestro, V. ; Montemurro, P. ; Prelec, K. ; Witkover, R. ; Gough, R. ; Staples, J.

Author_Institution

Brookhaven Nat. Lab., Upton, NY, USA

fYear

1989

fDate

20-23 Mar 1989

Firstpage

999

Abstract

In the fall of 1988, the 750-keV Cockcroft-Walton (C-W) preinjector for the Alternating Gradient Synchrotron (AGS) 200-MeV H^- linac was replaced by an RFQ (radio-frequency quadrupole), in what has proved to be a very successful upgrade. The motivations for the upgrade included improved reliability, simpler maintenance, and the added convenience of having the ion source located at nearly ground potential. At the same time, the controls and instrumentation in the preinjector area were modernized. The linac has been operating full time with this RFQ preinjector since January 1, 1989, and the reliability has been excellent. The source, RFQ, and linac operate at a 5-Hz repetition rate, and the beam pulse width is approximately 450 μs. At this time, the H^- current at 200 MeV is typically 23-25 mA, the same as previous operation with the C-W, although it will be possible to reach higher currents in the future

Keywords

hydrogen ions; ion accelerators; linear accelerators; 200 MeV; 5 Hz; AGS RFQ preinjector; Alternating Gradient Synchrotron; H^- current; H^- linac; beam pulse width; radiofrequency quadrupole; upgrade; Anodes; Apertures; Educational institutions; Electrodes; Electrons; Ion sources; Laboratories; Linear particle accelerator; Maintenance; Space charge;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE

Conference_Location

Chicago, IL

Type

conf

DOI

10.1109/PAC.1989.73327

Filename

73327