Determination of the plasma properties in the SOL and in the divertor of the COMPASS tokamak using probe techniques Project ID: *BAS-20-13 Provider: Czech Academy of Sciences Period: Jan 01, 2020 - Dec 31, 2022 Principal Investigator: Dr. Miglena Dimitrova Co-investigators R. Pánek, J. Stöckel, R. Dejarnac, D. Tskhakaya, J. Cavalier, A. Casolari, K. Bogár, K. Hromasová, O. Grover, M. Farník Aims of the project: The project aims to employ modelling and measurements based on the kinetic theory to acquire a deeper insight into the scrape-off-layer (SOL) and in the divertor. It was found experimentally that generally in attached plasma in the divertor of the COMPASS tokamak the electron energy distribution function (EEDF) is non-Maxwellian. The project will attempt to compare for the first time the experimental findings with a proper modelling using the BIK1 code to confirm from a kinetic point of view the experimental results on the COMPASS tokamak in Prague and other devices. The upgraded tokamak COMPASS-U will have electron cyclotron resonance heating (ECRH) system, which will provide additional means for plasma control and suppression of various instabilities. In order to study the plasma parameters under an additional heating a precise probe diagnostics will be needed. Furthermore, at this stage it is essential to choose an appropriate design of the future ECRH system. The experience of the members of the research team will be helpful for preparing its specification.