Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Proposed Method of Measuring the Current Distribution in a Tokamak Plasma

Not Accessible

Your library or personal account may give you access

Abstract

It is shown that the current distribution in a typical Tokamak plasma can be measured by a light scattering technique. The direction of the total magnetic field is measured accurately enough that the magnitude of the small poloidal component can be found. The field direction is measured by observing the scattered frequency spectrum of CO2 laser light. The usual Gaussian spectrum becomes modulated at the electron cyclotron frequency when the difference between the incident and scattered wave vectors is nearly perpendicular to the magnetic field. The harmonics can be superimposed with a Fabry-Perot interferometer and their collective width resolved as the scattering direction is changed. The SNR is high only when the detector is shielded against background radiation.

© 1974 Optical Society of America

Full Article  |  PDF Article
More Like This
Theoretical assessment of the OTDR detector noise on plasma current measurement in tokamaks

Rastislav Motuz, Willem Leysen, Philippe Moreau, Andrei Gusarov, Petr Drexler, and Marc Wuilpart
Appl. Opt. 58(11) 2795-2802 (2019)

Electron cyclotron emission imaging in tokamak plasmas

Tobin Munsat, Calvin W. Domier, Xiangyu Kong, Tianran Liang, Neville C. Luhmann, Jr., Benjamin J. Tobias, Woochang Lee, Hyeon K. Park, Gunsu Yun, Ivo. G. J. Classen, and Anthony J. H. Donné
Appl. Opt. 49(19) E20-E30 (2010)

Far-infrared laser scattering studies of density fluctuations in tokamak fusion plasmas

P. Lee, N. C. Luhmann, H. Park, W. A. Peebles, R. J. Taylor, and C. X. Yu
Appl. Opt. 21(10) 1738-1744 (1982)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (11)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (21)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved