Fourth generation electron cyclotron resonance ion sources (invited)

Journal Article · Fri Feb 15 00:00:00 EST 2008 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2816793· OSTI ID:21103906

Lyneis, Claude M; Leitner, D; Todd, D S; Sabbi, G; Prestemon, S; Caspi, S; Ferracin, P ^[1]

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1. Lawrence Berkeley National Laboratory, 1 Cyclotron Rd. Berkeley, California 94720 (United States)

The concepts and technical challenges related to developing a fourth generation electron cyclotron resonance (ECR) ion source with a rf frequency greater than 40 GHz and magnetic confinement fields greater than twice B{sub ECR} will be explored in this article. Based on the semiempirical frequency scaling of ECR plasma density with the square of operating frequency, there should be significant gains in performance over current third generation ECR ion sources, which operate at rf frequencies between 20 and 30 GHz. While the third generation ECR ion sources use NbTi superconducting solenoid and sextupole coils, the new sources will need to use different superconducting materials, such as Nb{sub 3}Sn, to reach the required magnetic confinement, which scales linearly with rf frequency. Additional technical challenges include increased bremsstrahlung production, which may increase faster than the plasma density, bremsstrahlung heating of the cold mass, and the availability of high power continuous wave microwave sources at these frequencies. With each generation of ECR ion sources, there are new challenges to be mastered, but the potential for higher performance and reduced cost of the associated accelerator continues to make this a promising avenue for development.

• OSTI ID: 21103906
• Journal Information: Review of Scientific Instruments, Vol. 79, Issue 2; Conference: ICIS 2007: 12. international conference on ion sources, Jeju (Korea, Republic of), 26-31 Aug 2007; Other Information: DOI: 10.1063/1.2816793; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCELERATORS
BREMSSTRAHLUNG
ECR ION SOURCES
ELECTRON CYCLOTRON-RESONANCE
GAIN
GHZ RANGE
MAGNETIC CONFINEMENT
MICROWAVE RADIATION
PERFORMANCE
PLASMA
PLASMA DENSITY
PLASMA HEATING
RF SYSTEMS
SOLENOIDS
SUPERCONDUCTING MAGNETS