Abstract
In order to obtain information about the runaway electron population in COMPASS tokamak we employed 21 pinhole HXR camera borrowed from CEA Cadarache which detects HXR created when the runaway electron hit into the tokamak chamber. In this paper we show calibration of the camera and the first results - HXR energy spectra and energy loads in channels.
At the end of the paper we discus two different mechanism giving an upper limit on runaway electrons energy in COMPASS tokamak.