|Title||Pulsed radar reflectometry and prospects for fluctuation measurements|
|Publication Type||Journal Article|
|Year of Publication||1997|
|Authors||A.JH Donne, S.H Heijnen, C.AJ Hugenholtz|
|Journal||Fusion Engineering and Design|
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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