A feasibility study of an infrared tangential viewing polarimeter for measurement of the electron density profile in ITER (abstract)

Ma, C. H.; Hutchinson, D. P.; Richards, R. K.; Irby, J.
January 1997
Review of Scientific Instruments;Jan1997, Vol. 68 Issue 1, p698
Academic Journal
Presents the abstract of a paper reporting on preliminary results of a feasibility study of a carbon dioxide laser tangential viewing polarimeter for measuring electron density profiles in the International Thermonuclear Experimental Reactor (ITER). Electro-optic polarization modulation technique.


Related Articles

  • CO[sub 2] laser polarimeter for electron density profile measurement on the Large Helical Device. Akiyama, T.; Tsuji-Iio, S.; Shimada, R.; Nakayama, K.; Okajima, S.; Takahashi, M.; Terai, K.; Tanaka, K.; Tokuzawa, T.; Kawahata, K. // Review of Scientific Instruments;May2003, Vol. 74 Issue 5, p2695 

    We developed a three-channel tangential CO[sub 2] laser polarimeter to measure electron densities on the Large Helical Device. Our system aims to obtain not only the line averaged electron density but also the electron density profile. The achieved resolution of the Faraday rotation angle was...

  • Dual CO[sub 2] laser polarimeter for Faraday rotation measurement in tokamak plasmas. Kawano, Yasunori; Chiba, Shin-ichi; Shirai, Hiroshi; Inoue, Akira; Nagashima, Akira // Review of Scientific Instruments;Jan1999, Vol. 70 Issue 1, p714 

    Describes the first operational results of the dual carbon dioxide laser polarimeter to measure Faraday rotation in large tokamaks. Components of the polarimeter; Photoelastic modulators utilized by each polarimeter; Successful measurement of the Faraday rotation by the JT-60U plasma even at a...

  • Poloidal polarimeter system for current density measurements in ITER. Donne, A.J.H.; Edlington, T.; Joffrin, E.; Koslowski, H.R.; Nieswand, C.; Segre, S.E.; Stott, P.E.; Walker, C. // Review of Scientific Instruments;Jan1999, Vol. 70 Issue 1, p726 

    Describes the poloidal polarimeter system for current density profile measurements in the International Thermonuclear Experimental Reactor. Technical setup of the system; Viewing chords of the system; Optimum wavelength for the polarimeter; Detection scheme.

  • Fringe-jump corrected far infrared tangential interferometer/polarimeter for a real-time density feedback control system of NSTX plasmas. Juhn, J.-W.; Lee, K. C.; Hwang, Y. S.; Domier, C. W.; Luhmann, N. C.; Leblanc, B. P.; Mueller, D.; Gates, D. A.; Kaita, R. // Review of Scientific Instruments;Oct2010, Vol. 81 Issue 10, p10D540 

    The far infrared tangential interferometer/polarimeter (FIReTIP) of the National Spherical Torus Experiment (NSTX) has been set up to provide reliable electron density signals for a real-time density feedback control system. This work consists of two main parts: suppression of the fringe jumps...

  • Multiframe interferometric study of a laser irradiated plasma in the presence of the two plasmon decay instability. Meyer, J.; Houtman, H. // Physics of Fluids B: Plasma Physics;Mar91, Vol. 3 Issue 3, p745 

    The temporal development of the electron density distribution in a CO2-laser produced plasma is studied interferometrically at 10.5 GHz framing rates with 50 psec resolution. The plasma is produced in a helium gas jet target and has a maximum density of 5×1018 cm-3. Thomson scattering of...

  • Experimental study of laser-induced plasma in welding conditions with continuous CO2 laser. Poueyo-Verwaerde, A.; Fabbro, R.; Deshors, G.; de Frutos, A. M.; Orza, J. M. // Journal of Applied Physics;11/1/1993, Vol. 74 Issue 9, p5773 

    Presents a study which examined laser-induced plasmas obtained during a welding process with continuous carbon dioxide laser. Information on the spatial variations of electron density and temperature; Quantification of the absorption and refraction of the carbon dioxide laser radiation; Details...

  • Fiberoptic heterodyne magnetic field sensor for long-pulsed fusion devices. Tsuji-lio, S.; Akiyama, T.; Sato, E.; Nozawa, T.; Tsutsui, H.; Shimada, R.; Takahashi, M.; Terai, K. // Review of Scientific Instruments;Jan2001, Vol. 72 Issue 1, p413 

    A heterodyne polarimeter which measures the Faraday effect has been under development as a magnetic field sensor for long-pulsed fusion devices. The wavelength of laser beam was chosen to be 850 nm since the radiation-induced loss in optical fibers is significant below 800 nm while the Faraday...

  • 1-millimeter wave interferometer for the measurement of line integral electron density on TFTR. Efthimion, P. C.; Taylor, G.; Ernst, W.; Goldman, M.; McCarthy, M.; Anderson, H.; Luhmann, N. C. // Review of Scientific Instruments;May85, Vol. 56 Issue 5, p908 

    A two-pass interferometer at 285 GHz has been developed to measure the line-integrated electron density on the horizontal midplane of the toroidal fusion test reactor (TFTR). Presently, the interferometer employs a 2-mW solid-state source to supply the launch wave and a 2-mm klystron oscillator...

  • CO2 laser polarimeter for Faraday rotation measurements in the DIII-D tokamak. Van Zeeland, M. A.; Boivin, R. L.; Carlstrom, T. N.; Deterly, T. M. // Review of Scientific Instruments;Oct2008, Vol. 79 Issue 10, p10E719 

    A tangential viewing, 10.59 μm CO2 laser polarimeter for electron density measurements based on plasma induced Faraday rotation has been installed on DIII-D. The system uses colinear right- and left-hand circularly polarized beams with a difference frequency of 40 MHz to generate the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics