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Title: Measurement of ion species in high current ECR H{sup +}/D{sup +} ion source for IFMIF (International Fusion Materials Irradiation Facility)

Ion species ratio of high current positive hydrogen/deuterium ion beams extracted from an electron-cyclotron-resonance ion source for International Fusion Materials Irradiation Facility accelerator was measured by the Doppler shift Balmer-α line spectroscopy. The proton (H{sup +}) ratio at the middle of the low energy beam transport reached 80% at the hydrogen ion beam extraction of 100 keV/160 mA and the deuteron (D{sup +}) ratio reached 75% at the deuterium ion beam extraction of 100 keV/113 mA. It is found that the H{sup +} ratio measured by the spectroscopy gives lower than that derived from the phase-space diagram measured by an Allison scanner type emittance monitor. The H{sup +}/D{sup +} ratio estimated by the emittance monitor was more than 90% at those extraction currents.
Authors:
; ; ; ; ; ; ;  [1] ; ; ; ; ;  [2] ; ; ;  [3]
  1. Rokkasho Fusion Institute, Japan Atomic Energy Agency, Rokkasho, Aomori 039-3212 (Japan)
  2. Commissariat à l’Energie Atomique et aux Energies Alternatives, CEA/Saclay, DSM/IRFU, 91191 Gif/Yvette (France)
  3. IFMIF/EVEDA Project Team, Rokkasho, Aomori 039-3212 (Japan)
Publication Date:
OSTI Identifier:
22482886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 87; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ACCELERATORS; BEAM EXTRACTION; BEAM TRANSPORT; DEUTERIUM IONS; DEUTERONS; DOPPLER EFFECT; ECR ION SOURCES; ELECTRON CYCLOTRON-RESONANCE; HYDROGEN IONS 1 PLUS; ION BEAMS; IRRADIATION PLANTS; KEV RANGE 10-100; PHASE SPACE; SPECTROSCOPY; THERMONUCLEAR REACTOR MATERIALS