[en] A technique is given for calculating the macroscopic parameters of a molecular flow and the capture coefficients of vacuum structures with sorbing walls. The basic analytical relationships and diagrams are presented. The possible advantages of the proposed method in comparison with the Monte Carlo method and methods based on the theory of radiant heat exchange are discussed

[en] The structure of the DTTR vacuum system is described and its basic parameters are given. Vacuum chamber requirements are formulated and the principles of its construction are given. Thermal regimes of certain modifications of the protective screens are examined. Balance equations of the gas fluxes in the discharge chamber at different stages of the operating cycle are analyzed. The expediency of modular construction of the reactor pumpdown system is demonstrated

[en] The fast neutral deuterium atom injection system in the T-20 includes 8 injectors. In the present paper an analysis is made of the vacuum system of the injectors with 160 keV rated fast atom energy, these being subjected to the largest gas loading. The pumping system for the 80 keV injectors is designed along similar lines. (UK)

[en] Results are presented from a study of the erosion of 19 construction materials. These data (together with the results of other studies) make it possible to select the best material for the structural components of a thermonuclear reactor. The measured values of the selective sputtering coefficients can be used to calculate the time variation in the composition of the surface layers and the selective sputtering coefficients of the components of materials in a thermonuclear reactor, to choose the optimum operating regimes for reactors from the standpoint of erosion characteristics, and to estimate the time over which the first wall will enter a steady-state sputtering regime

[en] Preliminary considerations relating to the selection of parameters and the layout of the vacuum system for a tokamak experimental thermonuclear reactor vacuum system (ETRT) are discussed. The vacuum systems described are for the reactor channel, injector assembly, for purification devices, for devices for separation of reaction products, for tritium separation devices, for evacuating the jacket of the blanket, for evacuating the connecting lines, and for vacuum thermal insulation of the cryostat of the superconducting magnet units. (U.S.)