Overview of the Large Helical Device
Creators
- Komori, A.1
- Yamada, H.1
- Kaneko, O.1
- Ohyabu, N.1
- Kawahata, K.1
- Sakamoto, R.1
- Sakakibara, S.1
- Ashikawa, N.1
- Vries, P.C. de1
- Emoto, M.1
- Funaba, H.1
- Goto, M.1
- Ida, K.1
- Idei, H.1
- Ikeda, K.1
- Inagaki, S.1
- Inoue, N.1
- Isobe, M.1
- Kado, S.1
- Kubo, S.1
- Kumazawa, R.1
- Masuzaki, S.1
- Minami, T.1
- Miyazawa, J.1
- Morisaki, T.1
- Morita, S.1
- Murakami, S.1
- Muto, S.1
- Mutoh, T.1
- Nagayama, Y.1
- Nakamura, Y.1
- Nakanishi, H.1
- Narihara, K.1
- Nishimura, K.1
- Noda, N.1
- Kobuchi, T.1
- Ohdachi, S.1
- Oka, Y.1
- Osakabe, M.1
- Ozaki, T.1
- Peterson, B.J.1
- Saito, K.1
- Sagara, A.1
- Sasao, H.1
- Sasao, M.1
- Sato, K.1
- Sato, M.1
- Seki, T.1
- Shimozuma, T.1
- Shoji, M.1
- Suzuki, H.1
- Takechi, M.1
- Takeiri, Y.1
- Tanaka, K.1
- Toi, K.1
- Tokuzawa, T.1
- Tsumori, K.1
- Yamada, I.1
- Yamaguchi, S.1
- Yamamoto, S.1
- Yokoyama, M.1
- Yoshimura, Y.1
- Watanabe, K.Y.1
- Watanabe, T.1
- Watari, T.1
- Hamada, Y.1
- Itoh, K.1
- Matsuoka, K.1
- Murai, K.1
- Ohkubo, K.1
- Ohtake, I.1
- Okamoto, M.1
- Satoh, S.1
- Satow, T.1
- Sudo, S.1
- Tanahashi, S.1
- Yamazaki, K.1
- Motojima, O.1
- Fujiwara, M.1
- 1. National Institute for Fusion Science, Toki 509-5292 (Japan)
Description
The Large Helical Device (LHD) experiments have started after a construction period of eight years, and two experimental campaigns were performed in 1998. The magnetic field was raised up to 2.75 T at a magnetic axis position of 3.6 m at the end of the second campaign. In the third campaign, started in July in 1999, the plasma production with ECH of 0.9 MW and auxiliary heating with NBI of 3.5 MW have achieved an electron temperature of 3.5 keV and an ion temperature of 2.4 keV. The maximum stored energy has reached 0.75 MJ with an averaged electron density of 7.7x1019 m-3 by hydrogen pellet injection. The ICRF heating has sustained the plasma for longer than 2 s and the initial stored energy of the NBI target plasma has increased from 0.27 MJ to 0.335 MJ. The major characteristic of the LHD plasma is the formation of the temperature pedestal, which leads to some enhancement of energy confinement over the ISS95 scaling law. The confinement characteristic is gyro-Bohm and the maximum energy confinement has reached 0.28 s. The LHD has also shown its high potentiality for steady-state operation by realizing a 22 s discharge in the second campaign. (author)
Availability note (English)
Available online at the Web site for the journal Plasma Physics and Controlled Fusion (ISSN 1361-6587) http://www.iop/org/Additional details
Identifiers
- URL
- http://www.iop/org/;
Publishing Information
- Journal Title
- Plasma Physics and Controlled Fusion
- Journal Volume
- 42
- Journal Issue
- 11
- Journal Page Range
- p. 1165-1177
- ISSN
- 0741-3335
Conference
- Title
- 12. international stellarator workshop
- Dates
- 27 Sep - 1 Oct 1999
- Place
- Madison, WI (United States)
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 43114032
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BEAM INJECTION HEATING; ECR HEATING; LHD DEVICE; PLASMA PRODUCTION; REVIEWS
- Descriptors DEC
- CLOSED PLASMA DEVICES; DOCUMENT TYPES; HEATING; HIGH-FREQUENCY HEATING; PLASMA HEATING; THERMONUCLEAR DEVICES
Optional Information
- Notes
- Invited paper; 20 refs; This record replaces 31056157