Measurement of electron density profile by microwave reflectometry on tokamaks

Journal Article · Wed May 01 04:00:00 EDT 1985 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1138200· OSTI ID:5639815

Simonet, F

A new method for measuring the electron density spatial profile has been successfully tested on the tokamak of Fontenay aux Roses (TFR). This method is based on the total reflection experienced by a wave of frequency F on the layer where F = F/sub p/e(r). The experimental results show that the maximum electron density in the discharge is also easily measured and that accurate determination of a density profile can be obtained with a time resolution of 5 ms. This diagnostic is well adapted to all fusion devices where access to the total plasma cross section is limited, particularly for large tokamaks.

• Research Organization: Association EURATOM: CEA sur la Fusion, Departement de Recherches sur la Fusion Controlee, Centre d'Etudes Nucleaires, Boite Postale n 6. 92260 Fontenay-aux-Roses, France
• OSTI ID: 5639815
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 56:5; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
CLOSED PLASMA DEVICES
ELECTROMAGNETIC RADIATION
ELECTRON DENSITY
MICROWAVE RADIATION
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLASMA DIAGNOSTICS
RADIATIONS
REFLECTION
REFLECTIVITY
RESOLUTION
SPATIAL RESOLUTION
SURFACE PROPERTIES
TFR TOKAMAK
THERMONUCLEAR DEVICES
TIME RESOLUTION
TIMING PROPERTIES
TOKAMAK DEVICES