Runaway Electron Measurements in the JET Tokamak
The perpendicular X-ray emission of runaway electrons with energies up to a few MeV has been measured in Joint European Torus (JET) low density ohmic discharges by means of the fast electron bremsstrahlung profile monitor. A diffusion model simulating the temporal evolution of the line integrated X-ray signals is used to determine the runaway radial transport coefficient in the central region of the plasma (D(r) approximately 0.2 m(2)/s for r/a below 0.5); a comparison is made with the predictions of magnetic and electrostatic turbulent transport theories and a lower limit on the level of radial magnetic field fluctuations is found.
Bibliographic Reference: Article : Plasma Physics and Controlled Fusion (1995)
Record Number: 199512130 / Last updated on: 1996-01-15
Original language: en
Available languages: en