A two color millimeter-wave interferometer for the measurement of line integral electron density on large helical device

被引：25

作者：

Kawahata, K ^{[1
]}

Tanaka, K

Ito, Y

Ejiri, A

Wylde, RJ

机构：

[1] Natl Inst Fus Sci, Toki 50952, Japan

[2] Univ Tokyo, Grad Sch Sci, Dept Phys, Tokyo 1130033, Japan

[3] Thomas Keating Ltd, Billinghurst RH14 9SH, W Sussex, England

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1999年 / 70卷 / 01期

关键词：

D O I：

10.1063/1.1149274

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

In the National Institute for Fusion Science, the large helical device (LHD) (R = 3.9 m, a(p) = 0.65 m, B = 3-4T) was constructed in Toki City on January, 1998. The LHD is a torsatron/ heliotron type device with a superconducting helical winding of pitch parameters of l/m = 2/10 and three sets of superconducting poloidal coils. A two color millimeter-wave interferometer has been developed for the measurement of line integral electron density on the horizontal midplane of the LHD. To overcome the effects of the change in the transmission path length (similar to 100 m) during long pulse plasmas (10-1800 s), we have applied two color interferometry at 140 and 285 GHz. (C) 1999 American Institute of Physics. [S0034-6748(99)57901-X].

引用

页码：695 / 698

页数：4

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