Prototype Impedance-Computed Tomographic Data Acquisition System (Prototype deSysteme d'Acquisition de Donnees Tomographiques Calculees a Partir de l'Impedance)

摘要

A prototype, multi-electrode, impedance-measurement apparatus was assembled inorder to verify the practicality of monitoring moisture distribution in sand/clay material using electrical impedance-computed tomography. A bentonite clay/sand mixture has been proposed as a candidate material in designs of barriers to restrict radionuclide migration in nuclear fuel waste disposal vaults. With an IBM personal computer, existing data acquisition electronics, and a small-scale laboratory apparatus simulating a proposed vault setting, a system was designed, assembled, and used. This apparatus demonstrated the technique with laboratory samples and its potential for monitoring in a full-scale vault setting.