TITLE

Bench test results on a new technique for far-infrared polarimetry

AUTHOR(S)
Barry, S.; Nieswand, C.; Prunty, S.L.; Mansfield, H.M.; O'Leary, P.
PUB. DATE
May 1997
SOURCE
Review of Scientific Instruments;May97, Vol. 68 Issue 5, p2037
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Presents results of bench tests performed on a method of combined interferometry/polarimetry for the magnetic-field reconstruction of tokamak plasmas. Method description; Sensitivity of the modified method; Feasibility of Faraday rotation determination; Noise level on the polarimeter output.
ACCESSION #
4290428

 

Related Articles

  • Enhancement of the spectroscopic method for mapping microwave fields in tokamak plasmas. Gavrilenko, V.P.; Oks, E. // Review of Scientific Instruments;Jan1999, Vol. 70 Issue 1, p363 

    Suggests a significantly enhanced spectroscopic method for mapping microwave fields in tokamak plasmas. Utilization of the laser-induced fluorescence from a hydrogen or deuterium beam; Publication of the first draft of the method; Non-requirement of a calibration at the zero microwave field;...

  • 2-D FIR interferometry and polarimetry on TPX. Geck, W.R.; Qin, X.; Liao, J.; Domier, C.W.; Luhmann Jr., N.C. // Review of Scientific Instruments;Jan1995, Vol. 66 Issue 1, p860 

    Investigates a multiple fan-beam approach to 2-D FIR interferometry and polarimetry for use on next generation tokamaks such as the TPX. Number of inside launch beams utilized in the approach; Finite number of receive horns positioned within the vacuum vessel.

  • Equilibrium reconstructions of reversed-shear discharges based on motional Stark effect measurements Batha, S. H.; Levinton, F. M.; Wieland, R. M.; Hirshman, S. P. // Review of Scientific Instruments;Jan1997, Vol. 68 Issue 1, p392 

    Details how free-boundary equilibrium reconstructions of the temporal evolution of tokamak discharges can be made using internal magnetic field measurements taken in tokamak discharges with a motional Stark effect polarimeter. Boundary positioning algorithm; Variable tension splines;...

  • Far infrared tangential interferometry/polarimetry on the National Spherical Tokamak Experiment. Park, H.K.; Domier, C.W.; Geck, W.R.; Luhmann Jr., N.C. // Review of Scientific Instruments;Jan1999, Vol. 70 Issue 1, p710 

    Discusses far infrared tangential interferometry/polarimetry (TIP) on the National Spherical Tokamak Experiment. Basic layout of the single channel interferometer; Basis of the TIP system geometry; Measurement of the Faraday rotation.

  • Far-infrared polarimetry/interferometry for internal magnetic field measurement on ZT-40M (abstract). Erickson, R. M.; Forman, P. R.; Jahoda, F. C. // Review of Scientific Instruments;May85, Vol. 56 Issue 5, p939 

    An important aspect of this method is to measure the density simultaneously with the Faraday rotation in order to infer the magnetic field from the rotation. This measurement performed on several chords yields information on the density and poloidal field profiles. Heterodyne techniques are...

  • Calculation of edge toroidal current density distributions from DIII-D lithium beam measurements using Ampère’s law. Thomas, D. M.; Leonard, A. W.; Mueller, H. W. // Review of Scientific Instruments;Oct2004 Part I & II, Vol. 75 Issue 10, p4109 

    The local edge current density j(r) is a parameter of basic importance in understanding the stability of high performance tokamaks, as well as the dynamics of edge localized mode behavior. On DIII-D, the lithium beam polarimetry diagnostic provides precise measurements of the local magnetic...

  • Polarimetry of motional Stark effect and determination of current profiles in DIII-D (invited). Wróblewski, D.; Lao, L. L. // Review of Scientific Instruments;Oct92, Vol. 63 Issue 10, p5140 

    The motional electric field E=v × B, where v is the velocity and B is the tokamak magnetic field, produces a strong Stark effect in spectral lines emitted by hydrogenic neutral beams. The tilt angle of the magnetic field line, a quantity related directly to the distribution of the plasma...

  • Old and New Problems in Spectroscopic Diagnostics of Plasmas. Lisitsa, V. S. // AIP Conference Proceedings;2006, Vol. 874 Issue 1, p127 

    A number of spectroscopic problems for laser, astrophysical, thermonuclear and low temperature plasmas are under consideration.The general question for hydrogen spectra at high densities related to a transition from impact to quasistatic broadening for electrons is analyzed. The problem of...

  • Measurement of current profile dynamics in the Madison Symmetric Torus. Terry, S.D.; Brower, D.L.; Ding, W.X.; Anderson, J.K.; Biewer, T.M.; Chapman, B.E.; Craig, D.; Forest, C.B.; O'Connell, R.; Prager, S.C.; Sarff, J.S. // Physics of Plasmas;Mar2004, Vol. 11 Issue 3, p1079 

    The current profile and core magnetic field fluctuation amplitudes in a reversed-field pinch are measured by using a high-resolution polarimetry–interferometry system. This paper presents data showing a redistribution of the current during a sawtooth crash. Also, the core magnetic field...

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