Development of an electron-beam ion source for a relativistic heavy-ion collider preinjector

Journal Article · Fri Mar 01 04:00:00 EST 1996 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1146827· OSTI ID:279272

Beebe, E; Alessi, J; Hershcovitch, A; Kponou, A; Prelec, K ^[1]; Schmieder, R W ^[2]

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1. AGS Department, Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)
2. Div. 8347, Sandia National Laboratory, Livermore, California 94551 (United States)

At Brookhaven National Laboratory (BNL), an electron-beam ion source (EBIS) is operational as a test bed for development of a high current EBIS for relativistic heavy-ion collider (RHIC). Previously, the goal of most EBIS research has been to produce bare or nearly bare nuclei. At BNL, the EBIS is required to produce only medium charge states of heavy ions, e.g., Au{sup 35+}, since there is further stripping at higher energies. The BNL effort is directed at reaching intensities of interest to RHIC, approximately 3{times}10{sup 9} particles/pulse, which will require an EBIS electron beam on the order of 10 A. Initial tests using a 1 mm LaB{sub 6} cathode have produced electron beam currents up to the design value of 110 mA. A 2 mm LaB{sub 6} cathode has been installed and in a first run has produced currents up to 350 mA. This source has so far produced charge states up to Ar{sup 16+} using neutral gas injection, and up to Tl{sup 50+} using external ion injection. Results of these studies and ion injection trials are presented. {copyright} {ital 1996 American Institute of Physics.}

• OSTI ID: 279272
• Report Number(s): CONF-9509125--
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 3 Vol. 67; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
CHARGE STATES
ELECTRON BEAM ION SOURCES
HEAVY IONS
LANTHANUM BORIDES
MILLI AMP BEAM CURRENTS
MULTICHARGED IONS
PERFORMANCE
RELATIVISTIC BEAM INJECTION