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| Presentation | 2007-08-03 15:45 High Power and Long Pulse Operation of 170GHz Gyrotron for ITER Ken Kajiwara, Atsushi Kasugai, Koji Takahashi, Noriyuki Kobayashi, Keishi Sakamoto (JAEA)  ED2007-141 Link to ES Tech. Rep. Archives: ED2007-141 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In Japan Atomics Energy Agency, the development of high power, high efficiency and long pulse gyrotron has been performed. In the last year, the improvement of the internal radiator and mirrors, the modification of the shape of the electron gun and the development of a preprogrammed control system of the cathode heater was performed. As a result, the power of 0.6MW with total efficiency of 46\% operation was continued 3600 sec. In addition to the improvements, the operation at the ``hard-excitation'' region, which is difficult to start the oscillation contrary to the possible high efficiency operation, is realized by controlling the cahode-anode voltage and magnetic field at the cavity during the pulse. With the operation in the hard-excitation region, the 1MW, 55% and 800sec. pulse was achieved. It exceeds the requirement of the ITER which is 1MW, 50%, 500sec. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Fusion / ITER / Electron cyclotron heating / Gyrotron / Hi power / Long pulse / High efficiency / | |
| Reference Info. | IEICE Tech. Rep., vol. 107, no. 177, ED2007-141, pp. 27-31, Aug. 2007. | |
| Paper # | ED2007-141 | |
| Date of Issue | 2007-07-27 (ED) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | ED2007-141 Link to ES Tech. Rep. Archives: ED2007-141 |
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| Conference Information | |
| Committee | ED |
| Conference Date | 2007-08-03 - 2007-08-03 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | ED |
| Conference Code | 2007-08-ED |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | High Power and Long Pulse Operation of 170GHz Gyrotron for ITER |
| Sub Title (in English) | |
| Keyword(1) | Fusion |
| Keyword(2) | ITER |
| Keyword(3) | Electron cyclotron heating |
| Keyword(4) | Gyrotron |
| Keyword(5) | Hi power |
| Keyword(6) | Long pulse |
| Keyword(7) | High efficiency |
| Keyword(8) | |
| 1st Author's Name | Ken Kajiwara |
| 1st Author's Affiliation | Japan Atomic Energy Agency (JAEA) |
| 2nd Author's Name | Atsushi Kasugai |
| 2nd Author's Affiliation | Japan Atomic Energy Agency (JAEA) |
| 3rd Author's Name | Koji Takahashi |
| 3rd Author's Affiliation | Japan Atomic Energy Agency (JAEA) |
| 4th Author's Name | Noriyuki Kobayashi |
| 4th Author's Affiliation | Japan Atomic Energy Agency (JAEA) |
| 5th Author's Name | Keishi Sakamoto |
| 5th Author's Affiliation | Japan Atomic Energy Agency (JAEA) |
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| Speaker | Author-1 |
| Date Time | 2007-08-03 15:45:00 |
| Presentation Time | 25 minutes |
| Registration for | ED |
| Paper # | ED2007-141 |
| Volume (vol) | vol.107 |
| Number (no) | no.177 |
| Page | pp.27-31 |
| #Pages | 5 |
| Date of Issue | 2007-07-27 (ED) |
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