Measurement of temperature dependence of dielectric permittivity of sapphire window for high power gyrotrons

被引：5

作者：

Takahashi, K

Kasugai, A

Sakamoto, K

Tsuneoka, M

Imai, T

机构：

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 1996年 / 35卷 / 08期

关键词：

sapphire window; temperature dependence of permittivity; reflection; millimeter wave; ECH; gyrotron;

D O I：

10.1143/JJAP.35.4413

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

It was measured that the dielectric permittivity of sapphire window changed with temperature rise at the frequencies of 110.0 GHz and 170.0 GHz. The permittivity epsilon varied from 9.4 to 10.0 at 170.0 GHz with temperature rise from 300 K to 630 K, which can cause a significant rf reflection at the surface of the window and degrade gyrotron oscillation. The permittivity change should be considered for the window design of high power, long pulse gyrotrons and transmission.

引用

页码：4413 / 4416

页数：4

共 18 条

[1]

Agapova MV, 1994, 19TH C DIG INT C INF, P79

[2] CURRENT DRIVE BY ELECTRON-CYCLOTRON WAVES [J].

ALIKAEV, VV ;

PARAIL, VV .

PLASMA PHYSICS AND CONTROLLED FUSION, 1991, 33 (13) :1639-1656

[3]

[Anonymous], THERMOPHYSICAL PROPE

[4]

ERCKMANN V, 1992, PLASMA PHYS CONTR F, V34, P1917, DOI 10.1088/0741-3335/34/13/021

[5] GYROTRONS FOR ECH APPLICATIONS [J].

FELCH, K ;

HUEY, H ;

JORY, H .

JOURNAL OF FUSION ENERGY, 1990, 9 (01) :59-75

[6]

FERBER MK, 1983, ORNLTM8717, V5

[7] GYROTRON [J].

FLYAGIN, VA ;

GAPONOV, AV ;

PETELIN, MI ;

YULPATOV, VK .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1977, 25 (06) :514-521

[8]

GANTENBEIN G, 1992, 17 INT C IR MM WAV P, P186

[9] AVOIDANCE OF QA=3 DISRUPTION BY ELECTRON-CYCLOTRON HEATING IN THE JFT-2M TOKAMAK [J].

HOSHINO, K ;

MORI, M ;

YAMAMOTO, T ;

TAMAI, H ;

SHOJI, T ;

MIURA, Y ;

AIKAWA, H ;

KASAI, S ;

KAWAKAMI, T ;

KAWASHIMA, H ;

MAENO, M ;

MATSUDA, T ;

OASA, K ;

ODAJIMA, K ;

OGAWA, H ;

OGAWA, T ;

SEIKE, T ;

SHIINA, T ;

UEHARA, K ;

YAMAUCHI, T ;

SUZUKI, N ;

MAEDA, H .

PHYSICAL REVIEW LETTERS, 1992, 69 (15) :2208-2211

[10] HIGH-POWER AND LONG-PULSE GYROTRON DEVELOPMENT IN JAERI [J].

KASUGAI, A ;

SAKAMOTO, K ;

TSUNEOKA, M ;

MAEBARA, S ;

NAGASHIMA, T ;

IMAI, T ;

KARIYA, T ;

OKAZAKI, Y ;

SHIRAI, N ;

OKAMOTO, T ;

HAYASHI, K ;

MITSUNAKA, Y ;

KOMURO, M .

FUSION ENGINEERING AND DESIGN, 1995, 26 (1-4) :281-286

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