ION-CYCLOTRON EMISSION ON THE TOKAMAK FUSION TEST REACTOR

Preliminary observations of ion cyclotron emission (ICE) have been made in D-T plasmas on the Tokamak Fusion Test Reactor, using an array of seven rf probes located at the top and bottom of the torus. Fusion product line emission has been identified, and appears to originate at the low field equatorial plane, near the radius of the outboard limiter. While the peak intensity of D-T fusion product ICE exhibits a correlation with overall neutron production, the time evolution of the ICE signal does not follow that of the neutron rate. During high power neutral beam injection, beam-species ICE is also observed, with frequencies corresponding to the outer midplane edge of the plasma. © 1995 American Institute of Physics.