TITLE

Multichannel electron cyclotron emission radiometry for magnetohydrodynamic mode studies in TEXTOR

AUTHOR(S)
Waidmann, G; de Vries, P C.; Kramer-Flecken, A.; Eulenberg, H P; Huxhagen, K
PUB. DATE
January 1997
SOURCE
Review of Scientific Instruments;Jan1997, Vol. 68 Issue 1, p492
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Describes two types of multichannel, heterodyne electron cyclotron emission systems for use in magnetohydrodynamic mode studies in TEXTOR. Principle of electron temperature measurement; Temperature profile perturbations caused by tearing modes; Disruption warning system.
ACCESSION #
630759

 

Related Articles

  • Excitation of Alfven cyclotron instability by charged fusion products in tokamaks. Gorelenkov, N.N.; Cheng, C.Z. // Physics of Plasmas;Jun95, Vol. 2 Issue 6, p1961 

    Presents a possible mechanism of ion cyclotron emission (ICE) based on the fast Alfven Cyclotron Instability (ACI) resonantly excited by high energy charged products (alpha-particles or protons). Two-dimensional eigenmode analysis of ACI mode structure and eigenfrequency; Computation of...

  • Temperature measurements using pulsed photothermal radiometry and silver halide infrared optical.... Eyal, O.; Scharf, V. // Applied Physics Letters;3/24/1997, Vol. 70 Issue 12, p1509 

    Proposes a method for temperature measurement based on pulsed photothermal radiometry method. Use of carbon dioxide laser, an infrared detector and silver halide infrared optical fibers; Spectral and temperature dependence of Planck's blackbody equation; Definition of the photothermal signal...

  • Post calibration of the two-dimensional electron cyclotron emission imaging instrument with electron temperature characteristics of the magnetohydrodynamic instabilities. Choi, M. J.; Park, H. K.; Yun, G. S.; Nam, Y. B.; Choe, G. H.; Lee, W.; Jardin, S. // Review of Scientific Instruments;Jan2016, Vol. 87 Issue 1, p1 

    The electron cyclotron emission imaging (ECEI) instrument is widely used to study the local electron temperature (Te) fluctuations by measuring the ECE intensity IECE ∝ Te in tokamak plasmas. The ECEI measurement is often processed in a normalized fluctuation quantity against the time...

  • Electron cyclotron emission radiometer upgrade on the Joint European Torus (JET) tokamak. Luna, E. de la; Sánchez, J.; Tribaldos, V.; Conway, G.; Suttrop, W.; Fessey, J.; Prentice, R.; Gowers, C.; Chareau, J. M. // Review of Scientific Instruments;Oct2004 Part I & II, Vol. 75 Issue 10, p3831 

    The capabilities of the Joint European Torus (JET) electron cyclotron emission (ECE) diagnostics have recently been extended with an upgrading of the heterodyne radiometer. The number of channels has been doubled to 96 channels, with a frequency separation corresponding to <1 cm for JET magnetic...

  • Design of a correlation electron cyclotron emission diagnostic for Alcator C-Mod. Sung, C.; White, A. E.; Irby, J. H.; Leccacorvi, R.; Vieira, R.; Oi, C. Y.; Peebles, W. A.; Nguyen, X. // Review of Scientific Instruments;Oct2012, Vol. 83 Issue 10, p10E311 

    A correlation electron cyclotron emission (CECE) diagnostic has been installed in Alcator C-Mod. In order to measure electron temperature fluctuations, this diagnostic uses a spectral decorrelation technique. Constraints obtained with nonlinear gyrokinetic simulations guided the design of the...

  • Development of KSTAR ECE imaging system for measurement of temperature fluctuations and edge density fluctuations. Yun, G. S.; Lee, W.; Choi, M. J.; Kim, J. B.; Park, H. K.; Domier, C. W.; Tobias, B.; Liang, T.; Kong, X.; Luhmann, N. C.; Donné, A. J. H. // Review of Scientific Instruments;Oct2010, Vol. 81 Issue 10, p10D930 

    The ECE imaging (ECEI) diagnostic tested on the TEXTOR tokamak revealed the sawtooth reconnection physics in unprecedented detail, including the first observation of high-field-side crash and collective heat transport [H. K. Park, N. C. Luhmann, Jr., A. J. H. Donné et al., Phys. Rev. Lett....

  • Inhomogeneous cyclotron emission source for the five branch mode conversion problem. Ng, G. S.; Shvets, V. F.; Swanson, D.G. // Physics of Plasmas;May95, Vol. 2 Issue 5, p1791 

    Investigates the inhomogeneous cyclotron emission source for the five branch mode conversion problem. Spatial profile of the emission source distribution from a cyclotron mode conversion layer; Principle of maximum blackbody radiation.

  • Electron temperature measurements from optically gray third harmonic electron cyclotron emission... Austin, M.E.; Ellis, R.F.; James, R.A.; Luce, T.C. // Physics of Plasmas;Oct96, Vol. 3 Issue 10, p3725 

    Studies electron temperature measurements from optically gray third harmonic electron cyclotron emission (ECE) in the DIII-D tokamak. Agreement of temperature values derived from ECE spectra with independent measurements by Thompson scattering; Determination of the optical depth of third...

  • Polarized electron-cyclotron emission in a poloidal-divertor tokamak. Sengstacke, M. A.; Dexter, R. N.; Prager, S. C. // Physics of Fluids (00319171);Jan85, Vol. 28 Issue 1, p403 

    The polarization of electron-cyclotron emission at the second harmonic (ω=2ωce) has been measured both without and with a microwave absorber installed within view of the receiver to reduce wall reflection. Whereas without the absorber the radiation is dominantly unpolarized, with the...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics