Joint Experiments on Small Tokamaks

The 1 st 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.