BNL volume H sup minus source
Conference
·
OSTI ID:5120693
The volume H{sup minus} ion source under development at Brookhaven is unique in that it has a toroidal plasma region, which feeds ions into the central extraction region through a conically shaped filter field. In pulsed operation, it produced 25 mA of H{sup minus} in a 1 cm{sup 2} aperture, with an electron-to-H{sup minus} ratio of {approx} 3. At 19 mA, a normalized, 90% emittance of 0.44 {pi} mm-mrad has been measured. Up to 50 mA has been extracted through a 1.87 cm{sup 2} aperture. Although not designed for steady state operation, up to 6 mA has been extracted d.c. The addition of xenon to the discharge was found to improve the source output by 20--70%. The circular magnetic cusp field geometry was found to be more favorable than radial cusp fields. 4 refs., 5 figs.
- Research Organization:
- Brookhaven National Lab., Upton, NY (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5120693
- Report Number(s):
- BNL-45983; CONF-910943--3; ON: DE92001775
- Country of Publication:
- United States
- Language:
- English
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