Joint Experiments on Small Tokamaks

The 1st Joint (Host Laboratory) Experiment on “Joint Research Using Small Tokamaks” has been carried out using the IPP Prague experimental facility "CASTOR Tokamak". The main experimental programme was aimed to charac- terize the edge plasma in a tokamak by using different advanced diagnostic techniques. It is widely recognized that characterization of phenomena occurring at the plasma edge is essential for understanding of the plasma confinement in a tokamak. The edge plasma in small and large scale experiments has many similar features, and the results ob- tained through detailed measurements in a small flexible device such as CASTOR are in many aspects still relevant to those in large tokamaks. Therefore, it is expected that results of this joint experiment will have a general validity.