SPATIAL RESOLUTION HARD X-RAY MEASUREMENT ON CT-68 TOKAMAK

The hard X-ray emissions from different chords of plasma column and at the limiter have been detected by a detector array on CT-6B tokamak. The experimental results show that the hard X-ray emission is correlative with MHD activity in the plasma. The measured signals are in the same phase as that of soft X-ray from the outer region near q=I resonant surface when sawtooth oscillation occus, indicating that the most part of runway electrons is generated in the region.