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High Current Density Beamlets from an RF Argon Source for Heavy Ion Fusion Applications

Conference ·
DOI:https://doi.org/10.1063/1.1699517· OSTI ID:15005014
; ;
In a new approach to develop high current beams for heavy ion fusion, beam current at about 0.5 ampere per channel can be obtained by merging an array of high current density beamlets of 5 mA each. We have done computer simulations to study the transport of high current density beamlets and the emittance growth due to this merging process. In our RF multicusp source experiment, we have produced a cluster of 61 beamlets using minimum gas flow. The current density from a 0.25 cm diameter aperture reached 100 mA/cm{sup 2}. The normalized emittance of 0.02 {pi}-mm-mrad corresponds to an equivalent ion temperature of 2.4 eV. These results showed that the RF argon plasma source is suitable for producing high current density beamlets that can be merged to form a high current high brightness beam for HIF application.
Research Organization:
Lawrence Livermore National Lab., CA (US)
Sponsoring Organization:
US Department of Energy (US)
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
15005014
Report Number(s):
UCRL-JC-155321
Country of Publication:
United States
Language:
English

References (4)

Design and simulation of a multibeamlet injector for a high current accelerator journal January 2003
Developing high brightness beams for heavy ion driven inertial fusion journal February 2002
Ion sources and injectors for HIF induction linacs
  • Kwan, J. W.; Ahle, L.; Beck, D. N.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 464, Issue 1-3 https://doi.org/10.1016/S0168-9002(01)00063-8
journal May 2001
A 1.8-MeV K + injector for the high current beam transport experiment journal July 2002

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Related Subjects

43 PARTICLE ACCELERATORS
APERTURES
ARGON
BEAM CURRENTS
BRIGHTNESS
COMPUTERIZED SIMULATION
CURRENT DENSITY
GAS FLOW
HEAVY IONS
ION SOURCES
ION TEMPERATURE
PLASMA
TRANSPORT