title: Electrical shielding box measurement of the negative hydrogen beam from Penning ion gauge ion source.
abstract: The cold-cathode Penning ion gauge (PIG) type ion source has been used for generation of negative hydrogen (H(-)) 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(-) 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(-) 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.
authors: Institute of Fluid Physics, CAEP, P.O. Box 919-106, Mianyang 621900, China. wangtaoxtc@gmail.com
authors: T
authors: T
authors: Wang
authors: Z
authors: Z
authors: Yang
authors: P
authors: P
authors: Dong
authors: J D
authors: JD
authors: long
authors: X Z
authors: XZ
authors: He
authors: X
authors: X
authors: Wang
authors: K Z
authors: KZ
authors: Zhang
authors: L W
authors: LW
authors: Zhang
mesh_terms: D000838:Anions / Q000737:chemistry*; D017357:Cyclotrons / Q000295:instrumentation*; D004566:Electrodes; D006859:Hydrogen / Q000737:chemistry*
chemical_list: D000838:Anions; D006859:Hydrogen