Electrical shielding box measurement of the negative hydrogen beam from Penning ion gauge ion source

Journal Article · Fri Jun 15 04:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4725534· OSTI ID:22093623

Wang, T.; Yang, Z.; Dong, P.; Long, J. D.; He, X. Z.; Zhang, K. Z.; Zhang, L. W. ^[1]; Wang, X. ^[2]

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1. Institute of Fluid Physics, CAEP, P.O. Box 919-106, Mianyang 621900 (China)
2. NUSNNI-Nanocore, National University of Singapore, 117411 Singapore (Singapore)

The cold-cathode Penning ion gauge (PIG) type ion source has been used for generation of negative hydrogen (H{sup -}) ions as the internal ion source of a compact cyclotron. A novel method called electrical shielding box dc beam measurement is described in this paper, and the beam intensity was measured under dc extraction inside an electrical shielding box. The results of the trajectory simulation and dc H{sup -} beam extraction measurement were presented. The effect of gas flow rate, magnetic field strength, arc current, and extraction voltage were also discussed. In conclusion, the dc H{sup -} beam current of about 4 mA from the PIG ion source with the puller voltage of 40 kV and arc current of 1.31 A was extrapolated from the measurement at low extraction dc voltages.

• OSTI ID: 22093623
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 6 Vol. 83; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BEAM CURRENTS
BEAM EXTRACTION
BEAMS
CATHODES
CYCLOTRONS
ELECTRIC CURRENTS
EXTRACTION
EXTRAPOLATION
GAS FLOW
HYDROGEN
HYDROGEN IONS 1 MINUS
MAGNETIC FIELDS
PENNING ION SOURCES
SHIELDING
SIMULATION