skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Multiple species beam production on laser ion source for electron beam ion source in Brookhaven National Laboratory

Abstract

Extracted ion beams from the test laser ion source (LIS) were transported through a test beam transport line which is almost identical to the actual primary beam transport in the current electron beam ion source apparatus. The tested species were C, Al, Si, Cr, Fe, Cu, Ag, Ta, and Au. The all measured beam currents fulfilled the requirements. However, in the case of light mass ions, the recorded emittance shapes have larger aberrations and the RMS values are higher than 0.06 π mm mrad, which is the design goal. Since we have margin to enhance the beam current, if we then allow some beam losses at the injection point, the number of the single charged ions within the acceptance can be supplied. For heaver ions like Ag, Ta, and Au, the LIS showed very good performance.

Authors:
 [1];  [2];  [3];  [2];  [1]; ;  [4]
  1. Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Meguro, Tokyo (Japan)
  2. (Japan)
  3. Riken, Wako, Saitama (Japan)
  4. Collider-Accelerator Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
Publication Date:
OSTI Identifier:
22253620
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 2; Conference: ICIS 2011: 14. international conference on ion sources, Giardini-Naxos, Sicily (Italy), 12-16 Sep 2011; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 43 PARTICLE ACCELERATORS; BEAM CURRENTS; BEAM PRODUCTION; BEAM TRANSPORT; BNL; ELECTRON BEAM ION SOURCES; ION BEAMS; LASERS

Citation Formats

Sekine, M., E-mail: sekine.m.ae@m.titech.ac.jp, Riken, Wako, Saitama, Ikeda, S., Department of Energy Science, Tokyo Institute of Technology, Yokohama, Kanagawa, Hayashizaki, N., Kanesue, T., and Okamura, M. Multiple species beam production on laser ion source for electron beam ion source in Brookhaven National Laboratory. United States: N. p., 2014. Web. doi:10.1063/1.4854876.
Sekine, M., E-mail: sekine.m.ae@m.titech.ac.jp, Riken, Wako, Saitama, Ikeda, S., Department of Energy Science, Tokyo Institute of Technology, Yokohama, Kanagawa, Hayashizaki, N., Kanesue, T., & Okamura, M. Multiple species beam production on laser ion source for electron beam ion source in Brookhaven National Laboratory. United States. doi:10.1063/1.4854876.
Sekine, M., E-mail: sekine.m.ae@m.titech.ac.jp, Riken, Wako, Saitama, Ikeda, S., Department of Energy Science, Tokyo Institute of Technology, Yokohama, Kanagawa, Hayashizaki, N., Kanesue, T., and Okamura, M. Sat . "Multiple species beam production on laser ion source for electron beam ion source in Brookhaven National Laboratory". United States. doi:10.1063/1.4854876.
@article{osti_22253620,
title = {Multiple species beam production on laser ion source for electron beam ion source in Brookhaven National Laboratory},
author = {Sekine, M., E-mail: sekine.m.ae@m.titech.ac.jp and Riken, Wako, Saitama and Ikeda, S. and Department of Energy Science, Tokyo Institute of Technology, Yokohama, Kanagawa and Hayashizaki, N. and Kanesue, T. and Okamura, M.},
abstractNote = {Extracted ion beams from the test laser ion source (LIS) were transported through a test beam transport line which is almost identical to the actual primary beam transport in the current electron beam ion source apparatus. The tested species were C, Al, Si, Cr, Fe, Cu, Ag, Ta, and Au. The all measured beam currents fulfilled the requirements. However, in the case of light mass ions, the recorded emittance shapes have larger aberrations and the RMS values are higher than 0.06 π mm mrad, which is the design goal. Since we have margin to enhance the beam current, if we then allow some beam losses at the injection point, the number of the single charged ions within the acceptance can be supplied. For heaver ions like Ag, Ta, and Au, the LIS showed very good performance.},
doi = {10.1063/1.4854876},
journal = {Review of Scientific Instruments},
number = 2,
volume = 85,
place = {United States},
year = {Sat Feb 15 00:00:00 EST 2014},
month = {Sat Feb 15 00:00:00 EST 2014}
}
  • The electron beam ion source (EBIS) preinjector at Brookhaven National Laboratory (BNL) is a new heavy ion-preinjector for relativistic heavy ion collider (RHIC) and NASA Space Radiation Laboratory (NSRL). Laser ion source (LIS) is a primary ion source provider for the BNL-EBIS. LIS with solenoid at the plasma drift section can realize the low peak current ({approx}100 {micro}A) with high charge ({approx}10 nC) which is the BNL-EBIS requirement. The gap between two solenoids does not cause serious plasma current decay, which helps us to make up the BNL-EBIS beamline.
  • The electron beam ion source (EBIS) preinjector at Brookhaven National Laboratory (BNL) is a new heavy ion-preinjector for relativistic heavy ion collider (RHIC) and NASA Space Radiation Laboratory (NSRL). Laser ion source (LIS) is a primary ion source provider for the BNL-EBIS. LIS with solenoid at the plasma drift section can realize the low peak current ({approx}100 {mu}A) with high charge ({approx}10 nC) which is the BNL-EBIS requirement. The gap between two solenoids does not cause serious plasma current decay, which helps us to make up the BNL-EBIS beamline.
  • At Brookhaven National Laboratory, an Electron Beam Ion Source (EBIS) is operational and has produced charge states such as N{sup 7+}, Ar{sup 16+}, and Xe{sup 26+} using neutral gas injection. Ions such as Na{sup 7+} and Tl{sup 41+} have been produced using external ion injection. The BNL EBIS effort is directed at reaching intensities of interest to RHIC, approximately 3{times}10{sup 9} particles/pulse which will require EBIS electron beams on the order of 10 A. Pulsed electron beams up to 1.14 A have been produced using a 3 mm LaB{sub 6} cathode. Ion yields corresponding to 50{percent} of the maximum trapmore » capacity for electron beams up to 0.5 A have been obtained. The goal for the TestEBIS is to produce a uranium ion charge state distribution peaked at U{sup 45+} with 50{percent} of the trap capacity for a 1 A electron beam.« less
  • As part of a new heavy ion preinjector that will supply beams for the Relativistic Heavy Ion Collider and the National Aeronautics and Space Administration Space Radiation Laboratory, construction of a new electron beam ion source (EBIS) is now being completed. This source, based on the successful prototype Brookhaven National Laboratory Test EBIS, is designed to produce milliampere level currents of all ion species, with q/m = (1/6)-(1/2). Among the major components of this source are a 5 T, 2-m-long, 204 mm diameter warm bore superconducting solenoid, an electron gun designed to operate at a nominal current of 10 A,more » and an electron collector designed to dissipate {approx} 300 kW of peak power. Careful attention has been paid to the design of the vacuum system, since a pressure of 10{sup -10} Torr is required in the trap region. The source includes several differential pumping stages, the trap can be baked to 400 C, and there are non-evaporable getter strips in the trap region. Power supplies include a 15 A, 15 kV electron collector power supply, and fast switchable power supplies for most of the 16 electrodes used for varying the trap potential distribution for ion injection, confinement, and extraction. The EBIS source and all EBIS power supplies sit on an isolated platform, which is pulsed up to a maximum of 100 kV during ion extraction. The EBIS is now fully assembled, and operation will be beginning following final vacuum and power supply tests. Details of the EBIS components are presented.« less