Radiation losses in FTU
Radiation losses from the FTU plasma are measured (temporally and spatially resolved) with a 16 channel bolometer array, arranged in a pin-hole camera, which observes the lower half plasma cross-section. The bolometer consists of a metal resistor bridge. The total radiated power and the radial profiles of emissivity are calculated by the standard Abel inversion technique, assuming poloidally symmetric emission. For FTU plasmas the capability of reconstructing the radiative heat loss profile is limited by the presence of marfes, since they are characterised by a poloidally asymmetric radiation emission. A method has been developed to calculate the radiation emission from the marfe, in order to derive the contribution to the total radiated power and to characterise the marfe itself.
Bibliographic Reference: Paper presented: 21st EPS Conference on Controlled Fusion and Plasma Physics, Montpellier (FR), June 27 - July 1, 1994
Availability: Available from (1) as Paper EN 38637 ORA
Record Number: 199411320 / Last updated on: 1994-12-06
Original language: en
Available languages: en