SITE INDEX

Edge Probes [Ip, stability study] FIR Interferometry Uses a CO2 pumped FIR laser at 184.6 um in a Mach-Zender interferometer configuration to measure line-averaged density. Continuous in time, scannable over seven positions in the minor radius on a shot-to-shot basis. Thomson Scattering [Te] A 5 J ruby laser at 694.3 nm gives a single time Te measurement. Scannable over seven positions on a shot-to-shot basis. VUV Spectrometers [OV (137.2nm); OVI (103.4nm)] Two 0.2m VUV monochromators monitor line radiation from two chords as shown in the diagnostics diagram. Flux Loop [Boundary Flux and Paramagnetism] Bolometry [Radiated Power] An XUV Silicon Photodiode with high sensitivity of 0.275 A/W monitors total radiation in a wide angle. A 16-channel photodiode array views through a pin hole allows spatial radiation profile on the mid-plane. Rogowski Coils Five Rogowski coils are mounted to measure the wall current Iw between the upper and bottom halves of the flux conserver. Designed by Trinh Phan. Last modified: 24-June-1999