OUTGASSING OF THE LOWER-HYBRID CURRENT DRIVE ANTENNA ON JT-60U

被引：2

作者：

MAEBARA, S

SEKI, M

SUGANUMA, K

IKEDA, Y

机构：

[1] Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, Naka-gun, Ibaraki-ken, 311-01, Naka-machi

来源：

FUSION ENGINEERING AND DESIGN | 1995年 / 30卷 / 03期

关键词：

D O I：

10.1016/0920-3796(94)00409-Z

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The outgassing properties of the lower hybrid current drive (LHCD) antenna during r.f. operation were studied on the JT-60U tokamak. The antenna is not equipped with a differential pumping system to evacuate the outgassing of the antenna. The pressure rise in the antenna during r.f. operation strongly depended on the r.f. power when r.f. conditioning was started. However, the outgassing rate was quickly reduced after several shots, and showed weak r.f. power dependence after sufficient r.f. conditioning. Finally, the outgassing rate of the LHCD antenna was in the range of approximately 10(-6) Pa m(3) s(-1) m(-2) after four weeks operation at the working temperature of 250 degrees C. Then a power density of up to 25 MW m(-2) was successfully injected into the plasma without the differential pumping system at the antenna on JT-60U.

引用

页码：253 / 259

页数：7

共 10 条

[1]

BIBET P, 1990, 16TH P S FUS TECHN L, V2, P1127

[2]

FUJII T, 1982, 3RD P JOINT VAR GREN, V3, P1133

[3]

GONICHE M, 1994, EURCEAFC1511 REP

[4] SIMPLE MULTIJUNCTION LAUNCHER WITH OVERSIZED WAVE-GUIDES FOR LOWER-HYBRID CURRENT DRIVE ON JT-60U [J].

IKEDA, Y ;

NAITO, O ;

SEKI, M ;

KONDOH, T ;

IDE, S ;

ANNO, K ;

FUKUDA, H ;

IKEDA, Y ;

KITAI, T ;

KIYONO, K ;

SAWAHATA, M ;

SHINOZAKI, S ;

SUGANUMA, K ;

SUZUKI, N ;

USHIGUSA, K .

FUSION ENGINEERING AND DESIGN, 1994, 24 (03) :287-298

[5]

Ikeda Y, 1991, PLASMA DEVICES OPER, V1, P155

[6] THE JT-60 RADIOFREQUENCY HEATING-SYSTEM - DESCRIPTION AND RESEARCH-AND-DEVELOPMENT RESULTS [J].

NAGASHIMA, T ;

UEHARA, K ;

KIMURA, H ;

IMAI, T ;

FUJII, T ;

SAKAMOTO, K ;

IKEDA, Y ;

SAIGUSA, M ;

SUZUKI, N ;

HONDA, M ;

YOKOKURA, K ;

KIYONO, K ;

SAWAHATA, M ;

SUGANUMA, K ;

SEKI, M ;

SHIRAKATA, H .

FUSION ENGINEERING AND DESIGN, 1987, 5 (01) :101-115

[7]

PAIN M, 13TH P S FUS ENG KNO

[8]

REY G, 1993, 10TH P TOP C RAD FRE, P315

[9] UNIPOLE MULTIFACTORING DISCHARGE IN THE LHRF LAUNCHER [J].

SAKAMOTO, K ;

IMAI, T ;

FUJII, T ;

IKEDA, Y ;

SAIGUSA, M ;

SAGAWA, J ;

NAGASHIMA, T .

IEEE TRANSACTIONS ON PLASMA SCIENCE, 1986, 14 (04) :548-553

[10]

SUGANUMA K, 1993, COMMUNICATION

← 1 →