Tests of New NIRS Compact ECR Ion Source for Carbon Therapy
- Graduate school of Mechanical Engineering, Toyo University (Japan)
- National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555 (Japan)
- Accelerator Engineering Corporation. Ltd., 2-13-1 Konakadai, Inage, Chiba 263-0043 (Japan)
- Department of Mechanical Engineering, Toyo University, 2100 Kujirai, Kawagoe, Saitama 350-8585 (Japan)
- K.V.I, University of Groningen, 9747 AA Groningen (Netherlands)
Ion sources for medical facilities should have characteristics of easy maintenance, low electric power, good stability and long operation time without maintenance (one year or more). Based on the performance of the proto type compact source, a 10 GHz compact ECR ion source with all permanent magnets has been developed. Peak values of the mirror magnetic field along the beam axis are 0.59 T at the extraction side and 0.87 T at the gas injection side, respectively, while the minimum B strength is 0.25 T. The source has a diameter of 320 mm and a length of 295 mm. The result of beam tests showed that a C4+ intensity of 530 {mu}A was obtained under an extraction voltage of 40 kV. This paper describes the experimental results for the new source.
- OSTI ID:
- 20630663
- Journal Information:
- AIP Conference Proceedings, Vol. 749, Issue 1; Conference: ECRIS'04: 16. international workshop on ECR ion sources, Berkeley, CA (United States), 26-30 Sep 2004; Other Information: DOI: 10.1063/1.1893394; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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