H sup minus source and low energy transport for an RFQ preinjector

Conference · Mon Jan 01 04:00:00 EST 1990 · Review of Scientific Instruments; (USA)

OSTI ID:6908282

Alessi, J G; Brennan, J M; Kponou, A ^[1]

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1. AGS Department, Brookhaven National Laboratory, Upton, New York, 11973 (US)

A radio-frequency quadrupole (RFQ) accelerator has replaced a 750-keV Cockcroft-Walton as the H{sup {minus}} preinjector for the Brookhaven alternating gradient synchrotron. A magnetron surface-plasma source with a circular aperture is used to produce 65--100 mA of H{sup {minus}} at 35 keV with a discharge current of less than 20 A. The symmetry of the beam is maintained in the 2-m transport to the RFQ via the use of magnetic solenoids for focusing. Currents up to 60 mA have been obtained out of the RFQ. A traveling-wave electrostatic chopper in the 35-keV transport line leads to a distortion of the emittance due to space-charge effects.

• OSTI ID: 6908282
• Report Number(s): CONF-890703--
• Conference Information: Journal Name: Review of Scientific Instruments; (USA) Journal Volume: 61:1
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430302* -- Particle Accelerators-- Injection & Extraction Systems
BEAM EMITTANCE
BEAM INJECTION
BEAM OPTICS
BEAM TRANSPORT
BNL
CHARGED PARTICLES
DESIGN
ENERGY RANGE
FOCUSING
HYDROGEN IONS
ION SOURCES
IONS
KEV RANGE
KEV RANGE 100-1000
NATIONAL ORGANIZATIONS
OPERATION
RF SYSTEMS
SPACE CHARGE
US AEC
US DOE
US ERDA
US ORGANIZATIONS