Oak Ridge 24URC tandem accelerator

Conference · Sat Nov 01 04:00:00 EST 1997

OSTI ID:548859

Meigs, M J; Haynes, D L; Juras, R C

This report discusses the operation of the Holifield Radioactive Ion Beam Facility (HRIBF) which was dedicated on December 12, 1996, with a formal ceremony followed by a reception and tour. This dedication marked the culmination of the reconfiguration, started in the middle of 1992, and the beginning of full-time operation as an international user facility. Although construction and commissioning are finished, development continues on ion sources and better methods to produce new and more intense radioactive ion beams (RIBs). The first RIB experiment, Coulomb excitation of {sup 69}As, was completed on June 6, 1997. During the time period from June 1-6, {sup 69}As and {sup 67}Ga were provided for seventy-six hours with a maximum of 1.5 x 10{sup 6} particles/sec at the experimental station. Four {mu}A of primary beam, 42 MeV protons from the Oak Ridge Isochronous Cyclotron (ORIC), was on the {sup 70}Ge target to produce this maximum beam. The experimenter was not set up to use this much beam, so most of the run was done at reduced levels. A second RIB experiment, again using {sup 69}As beam, was attempted on 9/9/97. Although a beam of about 10{sup 5} particles/second was successfully tuned to the Recoil Mass Spectrometer, the intensity produced by the RIB injector source was inadequate to complete the experiment.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: AC05-96OR22464
• OSTI ID: 548859
• Report Number(s): ORNL/CP--94876; CONF-9710106--; ON: DE98001069
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ARSENIC IONS
HHIRF ACCELERATOR
ION SOURCES
OPERATION
RADIOACTIVE ION BEAMS
TANDEM ELECTROSTATIC ACCELERATORS