Electron density profile measurements on LHD

被引:1
|
作者
Kawahata, K [1 ]
Tanaka, K
Tokuzawa, T
Ito, Y
Akiyama, T
Sanin, A
Okajima, S
Tsuji-Iio, S
Vyacheslavov, L
机构
[1] Natl Inst Fus Sci, Toki, Ibaraki 5095292, Japan
[2] Chubu Univ, Kasugai, Aichi 4878501, Japan
[3] Tokyo Inst Technol, Tokyo 1528550, Japan
[4] Budker Inst Nucl Phys, Novosibirsk 630090, Russia
关键词
helical plasma; interferometer; plasma; plasma diagnostics; polarimeter;
D O I
10.1109/TPS.2004.828461
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Several kinds of density diagnostics have developed and routinely operated to provide density profile information on the large helical device. A 13-channel far-infrared laser interferometer and a two-color millimeter-wave interferometer are used for monitoring the density profile. A CO2 laser imaging interferometer has been developed for detailed profiled measurements of density and density fluctuations. A CO2 laser densitometer measuring the Faraday rotation was developed for the long-pulse operations of large helical device. Details of each diagnostics and sample results are presented.
引用
收藏
页码:519 / 524
页数:6
相关论文
共 50 条
  • [1] CO2 laser imaging interferometer for high spatial resolution electron density profile measurements on LHD
    Akiyama, T
    Tanaka, K
    Vyacheslavov, LN
    Sanin, A
    Tokuzawa, T
    Ito, Y
    Tsuji-Iio, S
    Okajima, S
    Kawahata, K
    REVIEW OF SCIENTIFIC INSTRUMENTS, 2003, 74 (03): : 1638 - 1641
  • [2] Fiber interferometer for calibration of electron density profile measured by Thomson scattering in LHD
    Yasuhara, R.
    Akiyama, T.
    Yamada, I.
    Kawahata, K.
    Tokita, S.
    JOURNAL OF INSTRUMENTATION, 2012, 7
  • [3] Raman calibration of the LHD YAG Thomson scattering for electron-density measurements
    Yamada, I
    Narihara, K
    Hayashi, H
    REVIEW OF SCIENTIFIC INSTRUMENTS, 2003, 74 (03): : 1675 - 1678
  • [4] Ultrashort pulse reflectometry for electron density profile measurements
    Domier, CW
    Roh, Y
    Luhmann, NC
    REVIEW OF SCIENTIFIC INSTRUMENTS, 1999, 70 (01): : 1038 - 1041
  • [5] Electron density profile measurement using Ka-band microwave impulse radar reflectometer on LHD
    Tokuzawa, T.
    Kawahata, K.
    Tanaka, K.
    NUCLEAR FUSION, 2006, 46 (09) : S670 - S676
  • [6] Ultrashort pulse reflectometry for electron density profile measurements on SSPX
    Roh, Y
    Domier, CW
    Luhmann, NC
    REVIEW OF SCIENTIFIC INSTRUMENTS, 2001, 72 (01): : 332 - 335
  • [7] Electron density profile measurements of line plasmas by interferometry technique
    Kalal, M
    Rus, B
    Mocek, T
    Skala, J
    Kralikova, B
    Zeitoun, P
    Sebban, S
    FOURTH INTERNATIONAL WORKSHOP ON IODINE LASERS AND APPLICATIONS, 1996, 2767 : 119 - 124
  • [8] Core density profile control by energetic ion anisotropy in LHD
    Nishiura, M.
    Shimizu, A.
    Ido, T.
    Satake, S.
    Yoshinuma, M.
    Yanai, R.
    Nunami, M.
    Yamaguchi, H.
    Nuga, H.
    Seki, R.
    Fujita, K.
    Salewski, M.
    PHYSICS OF PLASMAS, 2024, 31 (06)
  • [9] Precise density profile measurements by using a two color YAG/CO2 laser imaging Interferometer on LHD
    Tanaka, K
    Sanin, AL
    Vyacheslavov, LN
    Akiyama, T
    Kawahata, K
    Tokuzawa, T
    Ito, Y
    Okajima, S
    REVIEW OF SCIENTIFIC INSTRUMENTS, 2004, 75 (10): : 3429 - 3432
  • [10] Initial Results of Neutron Emission Profile Measurements in LHD Deuterium Plasmas
    Kawase, Hiroki
    Ogawa, Kunihiro
    Nishitani, Takeo
    Pu, Neng
    Murakami, Sadayoshi
    Isobe, Mitsutaka
    PLASMA AND FUSION RESEARCH, 2018, 13