A short survey is given of the experimental activities at the small Prague tokamak CASTOR. They concern primarily the LH current drive using multijunction waveguide grills as launching antennae. During two last years the, efforts were focused on a study of the electrostatic and magnetic fluctuations under conditions of combined inductive/LHCD regimes and of the relation of the level of these fluctuations to the anomalous particles transport in tokamak CASTOR. Results of the study are discussed in some detail. (author). 24 figs., 51 refs.
Zacek, F; Badalec, J; Jakubka, J; Kryska, L; Preinhaelter, J; Stoeckel, J; Valovic, M;  Nanobashvili, S;  Weixelbaum, L; Wenzel, U;  Spineanu, F; Vlad, M 
- Ceskoslovenska Akademie Ved, Prague (Czechoslovakia). Ustav Fyziky Plazmatu
- AN Gruzinskoj SSR, Tbilisi (USSR). Inst. Fiziki
- Akademie der Wissenschaften der DDR, Berlin (Germany). Zentralinstitut fuer Elektronenphysik
- Central Inst. of Physics, Bucharest (Romania). Inst. for Physics and Technology for Radiation Devices