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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Mizuno, T. Umeda, N. Taniguchi, M. Kashiwagi, M. Tobari, H. Tanaka, Y. Dairaku, M. Inoue, T. Watanabe, K. Hanada, M. Kojima, A. Sakamoto, K. |
| Description | Country affiliation: Japan Author Affiliation: Taniguchi M ( Fusion Research and Development Directorate, Japan Atomic Energy Agency, 801-1 Mukoyama, Naka, Ibaraki 311-0193, Japan. taniguchi.masaki@jaea.go.jp) |
| Abstract | A multiaperture multigrid accelerator called 'MeV accelerator' has been developed for neutral beam injection system of international thermonuclear experimental reactor. In the present work, long pulse H(-) ion beam acceleration was performed by the MeV accelerator equipped with new water-cooled grids. At present, the pulse length was extended to 5 s for the beams of 750 keV, 221 mA, and 10 s for the beams of 600 keV, 158 mA. Energy density, defined as products of beam energy (keV), current (mA), and pulse (s) divided by aperture area (m(2)), increased more than one order of magnitude higher compared with original MeV accelerator without water cooling in its grids. At higher energy and current, the grid was melted by beam deflection. Due to this grid melting, breakdowns occurred between the grids, and hence, the pulse length was limited. Beam deflection will be compensated by aperture displacement in next experiment. |
| ISSN | 00346748 |
| Issue Number | 2 |
| Journal | Review of Scientific Instruments |
| Volume Number | 81 |
| e-ISSN | 10897623 |
| Language | English |
| Publisher | American Institute of Physics |
| Publisher Date | 2010-02-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Physics Discipline Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Instrumentation |
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