A scaled, circular-emitter penning sps for intense H- beams
Abstract
The Los Alamos versions of the Penning Surface-Plasma Source (SPS) routinely generate H- ion beams with pulsed currents over 100 mA. However, these sources employ geometries that result in the extraction of slit beams (0.5×10 mm2). Our modeling with the SNOW code indicates that the beam from a 5.4-mm-diam circular emitter will have lower emittance and divergence for transport to and injection into our radio-frequency quadrupole (RFQ) accelerator. This paper describes a newly constructed Penning SPS that has most of its discharge chamber dimensions scaled up by a factor of 4 to accommodate this circular emitter.
- Publication:
-
Production and Neutralizations of Negative Ions and Beams: 3rd International Sympoisum
- Pub Date:
- March 1984
- DOI:
- 10.1063/1.34372
- Bibcode:
- 1984AIPC..111..458S
- Keywords:
-
- 29.25.Cy;
- 52.75.-d;
- 52.80.Sm;
- Plasma devices;
- Magnetoactive discharges