Session 6Q - TFTR, JT-60, JET.
POSTER session, Wednesday afternoon, November 13
Exhibit Hall - Concourse Level, Adam's Mark
We have recently installed a fast Kodak digital camera system on the Bay P periscope in TFTR, in order to obtain images of disruptions, pellets, and edge-MHD activity during TFTR plasma discharges. The system is able to store 1600 frames at rates of 1000 frames per second (or up to 6000 partial frames per second), with gating times typically ranging from 10 microseconds to 1 millisecond, depending on the desired exposure or interference filters used. In this poster, we present results from observing Li+ light on the inner wall armor, during conditioning with lithium pellets on TFTR, for both ohmic and NBI-heated discharges. We also observe visible activity associated with rational q-surfaces during the current ramp-up phase, and sometimes events correlated with so-called ``locked-modes''. This work supported by DOE Contracts W-7405-ENG-36 and DE-AC02-76-CHO-3073.