Commissioning of the Los Alamos PSR injection upgrade

Author

Fitzgerald, D.H. ; Garnett, R. ; Jones, K. ; Macek, R.J. ; Merrill, F. ; Pillai, C. ; Plum, M.A. ; Sander, O.R. ; Browman, A. ; Johnson, D. ; Kustom, R.

Author_Institution

Los Alamos Nat. Lab., NM, USA

Volume

1

fYear

1999

fDate

1999

Firstpage

518

Abstract

An upgrade has been completed and commissioned to the Los Alamos Proton Storage Ring (PSR) to allow direct injection of the H^- beam into the ring and to move the circulating beam off the stripper foil using an orbit bump system. The design benefits of the upgrade are matching the transverse phase space of the injected beam to the PSR acceptance and a factor-of-ten reduction of the foil hits by the circulating beam. Foil thickness is optimized to minimize the sum of circulating-beam losses and losses caused by excited H⁰ states produced at injection. Design simulations predicted an overall reduction in losses by a factor of five. We discuss results of the commissioning and PSR performance in comparison to design projections and the goals of the upgrade project

Keywords

particle beam injection; proton accelerators; storage rings; H^- beam; Los Alamos PSR injection upgrade; Los Alamos Proton Storage Ring; circulating beam; circulating-beam losses; excited H⁰ states; orbit bump system; stripper foil; transverse phase space; Extraterrestrial measurements; Linear particle accelerator; Magnets; Particle beam injection; Particle beams; Particle scattering; Particle tracking; Predictive models; Production; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1999. Proceedings of the 1999

Conference_Location

New York, NY

Print_ISBN

0-7803-5573-3

Type

conf

DOI

10.1109/PAC.1999.795747

Filename

795747