Strain-gauge system of Tokamak KTM technological diagnostics

Abstract

One of the main engineering problems arising in control of fusion reactors, is the diagnostics of mechanical stresses and deformations of their vacuum vessel, directed to plasma inner vessel elements, load-bearing unit and electromagnetics arising under effect of power nonstationary electromagnetic fields, and periodic thermal stresses. In this connection the fusion devices of a Tokamak type especially experimental purpose, including KTM, should be equipped with operative diagnostic systems realizing methods of strain measurement. Thus the problem solving of a strain measurement should be executed with the count of the working conditions of the diagnosing fusion devices and requirements to a diagnostic system: definition of field of deformations and stresses, calculation of a frequency spectrum of analyzed process, simultaneous and synchronous registration of deformations and temperatures taking into account of ranges of their change.