Automated system for hydrogen and its isotopes monitoring at IVG.1M reactor

System is dedicated for real-time registration of hydrogen (and its isotopes) concentration in two volumes of experimental device during irradiative material testing experiment at IVG1M reactor. System allows conducting of automated simultaneous real-time sampling and registration of chemical composition of gases in operational volumes of two chambers of experimental installation (in inlet and outlet sides, for example). That is especially important for experiments on study of diffusion parameters (with method of hydrogen permeation, for example). Measurement part is based on mass-analyzing radio-frequency gouges of omegatron type RMO-13 and MX6407-P (for light masses) with appropriate set of hardware-software tools. Original programmable oscillator of omegatron operational frequency and programmable high-voltage ramp for MX6407-P deflection system were designed with purpose to provide computer control for both mass-analyzers. CAMAC interface is used to link measurement system to IBM PC. System provides possibility to measure wide mass-spectrum in a chamber under irradiation as well as simultaneous measurement of concentration changes of up to four masses in one chamber and registration of spectrum of light masses (2-6) in second chamber. Also it allows operation in data analysis mode when measurements are finished. Selection of operational mode, set-up of measurement duration, sampling frequency and data analysis are provided by graphic terminal of IBM PC. System supports data acquisition and processing during four-hour reactor power session with following technical characteristics: Number of measure channels - 2 (one-channel operation is possible); Input signal - analogous, 10-5-10.0 V voltage; Channel sampling frequency -up to 0.1 Hz. Software is functioning in environment of operational systems MS-DOS or Windows (in DOS emulation mode). Post-measurement data processing provides visual analysis and filtration of measured arrays. Described automated system is used for investigation of hydrogen- and tritium-permeation parameters of F82H and MANET stainless steels and vanadium alloys within the frame of international program of ITER-DEMO Thermonuclear Reactor