Observation of Non-Circular Cross-Section for q=1 Magnetic Surface in Very Low-q Discharge (q a \lesssim2) of DIVA Tokamak

Non-circular cross-section for q =1 magnetic surfaces were experimentally shown in stable very low- q discharge ( q a \lesssim2; q a is the safety factor at the plasma surface) of DIVA tokamak with and without a divertor. Heat flux to the first wall due to the sawtooth disruption in low- q discharge...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 1980-01, Vol.19 (7), p.L413
Main Authors: Yamamoto, Shin, Sengoku, Seio, Matsuda, Tosiaki, Matsumoto, Hiroshi, Ohasa, Kazumi, Odajima, Kazuo, Kimura, Haruyuki, Yamauchi, Toshihiko, Kumagai, Katsuaki, Sugie, Tatsuo, Kasai, Satoshi, Maeda, Hikosuke, Shimomura, Yasuo
Format: Article
Language:English
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Summary:Non-circular cross-section for q =1 magnetic surfaces were experimentally shown in stable very low- q discharge ( q a \lesssim2; q a is the safety factor at the plasma surface) of DIVA tokamak with and without a divertor. Heat flux to the first wall due to the sawtooth disruption in low- q discharge will become a serious problem in future large tokamak if sawtooth disruption cannot be suppressed.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.19.L413