The Holyfield heavy ion research facility

doi:10.1016/0168-9002(88)90524-4

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Volume 268, Issues 2–3, 20 May 1988, Pages 308-312

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Abstract

Development of the Holifield facility has continued with resulting improvements in the number of ion species provided, in the ion energy for tandem-only operations, and in utilization efficiency. In this report, we describe our recent operational experience, development activities, and future development plans.

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Cited by (5)

Development of the HRIBF 25-MV tandem accelerator as a RIB accelerator
1996, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
The Holifield facility 25URC tandem accelerator will begin accelerating radioactive ion beams (RIBs) for nuclear structure and astrophysics research in 1996. This paper addresses the development of the accelerator to allow optimum operation with the particular challengesassociated with RIBs. New diagnostics for ultra-low-intensity beams are being installed and the terminal potential stabilization system is being studied to optimize control with these low beam intensities. A new resistor-based voltage-grading system has resulted in more stable operation, as well as allowing operation at the very low terminal potentials which are required for some astrophysics experiments. Also addressed is beam transmission optimization, particularly at low terminal potentials, and operation of the accelerator at high terminal potentials.
A simple, inexpensive voltage grading resistor for large electrostatic accelerators
1992, Nuclear Inst. and Methods in Physics Research, A
Operational experience with compressed geometry acceleration tubes in the Oak Ridge 25URC tandem accelerator
1990, Nuclear Inst. and Methods in Physics Research, A
Installation of compressed geometry acceleration tubes and other associated modifications have increased the effective voltage capability of the Oak Ridge 25URC tandem accelerator by about 3 MV. Since mid-September 1988, the accelerator has been operated routinely at terminal potentials up to 24 MV and occasionally near 25 MV. In 3500 h of full-column operation, including 1100 h at potentials above 22 MV, no significant spark-induced damage was observed. Some considerations related to further improvements in voltage performance are discussed.
Improved voltage performance of the Oak Ridge 25URC tandem accelerator
1989, Nuclear Inst. and Methods in Physics Research, A
Observation of Closed Loops in High-Voltage Discharges: A Possible Precursor of Magnetic Flux Trapping
1992, IEEE Transactions on Plasma Science

^☆: Research sponsored by the US Department of Energy, under contract DE-AC05-84OR21400 with Martin Marietta Energy Systems, Inc.

^∗∗: On leave to National Science Foundation, Washington, DC 20550.

⁺: Co-op student, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA.

⁺⁺: Consultant.

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The Holyfield heavy ion research facility☆

Abstract

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.