Papers by Keyword: Cryostat

Abstract: Cryostat is an important equipment of International Thermonuclear Experimental Reactor (ITER).It is the outer part of ITER Tokamak. There are three issues to solve the parametric design of cryostat: First, the parametric description of cryostat model; Second, program design; Third, the establishment of Database. In this paper, take a simplified model of the cryostat as an example, after the parametric description of cryostat finished, the parametric design of cryostat has realized through ACCESS Database and the automation technology of the secondary development of CATIA under VB (Visual Basic).

Abstract: A model of absolute measuring instrument of power of synchrotron radiation in soft X-ray range of wavelengths of 8 – 0.4 nm based on high-temperature superconductor bolometer with electrical substitution has been developed, fabricated and tested. Tests have been carried out at the synchrotron radiation (SR) station “Cosmos” on the VEPP-4 storage ring of Budker Institute of Nuclear Physics of the SB RAS. It was ascertained that sensitivity of the device allows carrying out measurements of an SR flux power in the given spectral range. The minimum measured power was 3.2 W. A predicted threshold sensitivity of bolometer ~10-10 W/Hz1/2 at modulation frequency of 10 Hz and analysis of other factors influencing the measurement accuracy prove it to be real to achieve a 1 % accuracy at measurement of SR flux power of about 1 W.

Abstract: Having undertaken studies into a lightweight and highly efficient superconducting transformer for rolling stock, we developed a prototype with a primary winding, four secondary windings and a tertiary winding using Bi-2223 high temperature superconducting wire. Its primary voltage is 25kV, which is widely adopted as the catenary voltage on the world's high-speed lines. We adopted liquid nitrogen cooling, the weight being 1.71t excluding the refrigerator. The maximum output available to maintain superconductivity is 3.5MVA. We also introduce railways in Japan.