@article{5823, author = {A. J. H. Donne and S. H. Heijnen and C. A. J. Hugenholtz}, title = {Pulsed radar reflectometry and prospects for fluctuation measurements}, abstract = {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.}, year = {1997}, journal = {Fusion Engineering and Design}, volume = {34-35}, pages = {73-80}, month = {Mar}, isbn = {0920-3796}, doi = {10.1016/s0920-3796(96)00671-0}, language = {eng}, }