Visual Tritium Imaging Of In-Vessel Surfaces
Authors: C.A. Gentile, S.J. Zweben, C.H. Skinner, K.M. Young, S.W. Langish, M.F. Nishi, W.M. Shu, J. Parker, and K. Isobe
Date of PPPL Report: June 2000
Presented at: the 14th International Conference on Plasma Surface Interaction in Controlled Fusion Devices to be held in Rosenheim, Germany May 26-30, 2000.
A imaging detector has been developed for the purpose of providing a non-destructive, real time method of determining tritium concentrations on the surface of internal TFTR vacuum vessel components. The detector employs a green phosphor screen (P31, zinc sulfide: copper) with a wave length peak of 530 nm, a charge-coupled device (CCD) camera linked to a computer, and a detection chamber for inserting components recovered from the vacuum vessel. This detector is capable of determining tritium concentrations on the surfaces. The detector provides a method of imaging tritium deposition on the surfaces in a fairly rapid fashion.