Source of Negative Hydrogen Ions with Hot Cathode

G. I. Kuznetsov
2005 AIP Conference Proceedings  
In the report an H --ion source with following parameters is described. Ion energy is up to 30 keV, current is up to 5 mA, pulse duration varies from 1 to tens microseconds. Hions appear in magnetron discharge near a hot cathode surface made of LaB 6 or IrCe, which is 6 mm in diameter. Hions are extracted through 0.8x6 mm slot. Input of gas is by means of electromagnetic valve. Ion current depends on discharge current that in turn is defined by cathode temperature, discharge voltage, and
more » ... n pressure. Two permanent magnets fixed on iron core generate magnetic field for magnetron discharge. There is a magnetic correction of trajectories of extracted Hions. The Hion source has been used as an injector for tandem accelerator with following proton beam parameters: energy is 1.4 MeV, current is 3mA, and pulse duration is 2 microseconds. Simulation of the ion beam trajectories in source, transportation channel, and tandem accelerator, showed good correlation with experiments on the working installation.
doi:10.1063/1.1908303 fatcat:f2g72mfuazh5hgrjmwkbjjkex4