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Title: First results of the 2.45 GHz Oshima electron cyclotron resonance ion source

A new electron cyclotron resonance ion source has been constructed at Oshima College with a 2.45 GHz magnetron microwave source and permanent magnets employed as the main components. In addition, a solid-state power amplifier with a frequency range of 2.5–6.0 GHz was installed to study two-frequency plasma heating. Three solenoid coils were set up for adjusting the axial magnetic fields. Argon plasma generation and ion beam production have been conducted during the first year of operation. Ion current densities in the ECR plasma were measured using a biased disk. For 2.45 and 4.65 GHz two-frequency plasma heating, the ion density was approximately 1.5 times higher than that of 2.45 GHz single-frequency heating.
Authors:
 [1] ; ;  [2] ;  [3] ;  [4] ;  [5] ;  [6]
  1. National Institute of Technology, Toyama College, 13 Hongo, Toyama 939-8630 (Japan)
  2. National Institute of Technology, Oshima College, 1091-1 Komatsu, Suouoshima, Oshima, Yamaguchi 742-2193 (Japan)
  3. Tateyama Machine Co., Ltd., 30 Shimonoban, Toyama 930-1305 (Japan)
  4. Graduate School of Engineering, Toyo University, 2100 Kujirai, Kawagoe, Saitama 350-8585 (Japan)
  5. National Institute of Radiological Sciences (NIRS), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555 (Japan)
  6. Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871 (Japan)
Publication Date:
OSTI Identifier:
22482889
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; ARGON; BEAM PRODUCTION; CURRENT DENSITY; ECR ION SOURCES; ELECTRON CYCLOTRON-RESONANCE; GHZ RANGE 01-100; MAGNETIC FIELDS; MAGNETRONS; MICROWAVE RADIATION; PERMANENT MAGNETS; PLASMA HEATING; POWER AMPLIFIERS; SOLENOIDS