Pulsed radar reflectometry and prospects for fluctuation measurements

TitlePulsed radar reflectometry and prospects for fluctuation measurements
Publication TypeJournal Article
Year of Publication1997
AuthorsA.JH Donne, S.H Heijnen, C.AJ Hugenholtz
JournalFusion Engineering and Design
Date PublishedMar
ISBN Number0920-3796

A four-channel pulsed radar reflectometer has been developed for the Rijnhuizen Tokamak Project. The system combines a high temporal resolution (2 mu s) and a good spatial resolution (1 cm) with limited access demands. It has been used to diagnose steady state density profiles, as well as to follow strong density variations, as a result of magnetohydrodynamic instabilities, disruptions and pellet injection. The pulsed radar reflectometer is presently installed at the TEXTOR tokamak and is being upgraded to a 10-channel pulsed radar system. Additionally, two frequency-tunable channels will be added for performing correlation measurements. (C) 1997 Elsevier Science S.A.



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