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Title: Study on a negative hydrogen ion source with hot cathode arc discharge

A negative hydrogen (H{sup −}) ion source with hot cathode arc discharge was designed and fabricated as a primary injector for a 10 MeV PET cyclotron at IMP. 1 mA dc H{sup −} beam with ε {sub N,} {sub RMS} = 0.08 π mm mrad was extracted at 25 kV. Halbach hexapole was adopted to confine the plasma. The state of arc discharge, the parameters including filament current, arc current, gas pressure, plasma electrode bias, and the ratio of I{sub e{sup −}}/I{sub H{sup −}} were experimentally studied. The discussion on the result, and opinions to improve the source were given.
Authors:
;  [1] ;  [2] ; ; ; ; ; ; ; ; ; ;  [1]
  1. Institute of Modern Physics (IMP), Chinese Academy of Sciences, Lanzhou 730000 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22253726
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 2; Conference: ICIS 2011: 14. international conference on ion sources, Giardini-Naxos, Sicily (Italy), 12-16 Sep 2011; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BEAMS; CATHODES; CYCLOTRONS; HEXAPOLES; HYDROGEN IONS; ION SOURCES; MEV RANGE 01-10; PLASMA PRESSURE