Machine studies at the Los Alamos Proton Storage Ring
Results from recent machine development studies at the Los Alamos Proton Storage Ring (PSR) are presented on the origin of the ``first-turn`` losses, the PSR instability, and volume H{sup {minus}} ion source development. An experiment has been performed to measure the production of excited states of H{sup 0} when 800-MeV H{sup {minus}} ions impinge upon thin (70--300 {mu}g/cm{sup 2}) carbon foils. Preliminary results indicate yields of about 0.5% each for the n = 3 and n = 4 states. Much evidence has been accumulated supporting the hypothesis that the PSR instability is caused by coupled e-p oscillations, but a truly definitive and unambiguous test has not yet been performed. Plans for such a test include installation of hardware to suppress the most copious sources of electrons and experiments to measure the quantity of proton beam in the interbunch gap. Good progress is being made to test and evaluate two promising designs for a new high-intensity, high-brightness volume H{sup {minus}} ion source and on fast chopping of the beam by pulsing the plasma electrode.
- Research Organization:
- Los Alamos National Lab., NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 10184657
- Report Number(s):
- LA-UR-93-2941; CONF-9305177-13; ON: DE93040095; TRN: 93:022842
- Resource Relation:
- Conference: 12. International collaboration of advanced neutron sources meeting (ICANS),Abingdon (United Kingdom),24-28 May 1993; Other Information: PBD: [1993]
- Country of Publication:
- United States
- Language:
- English
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