The outline of following activities in the area of VAMAS TWA-6 will be reported. (1) Establishment of reliable measurement techniques for superconducting wires. 1.1 Critical current measurement in multifilamentary Nb3Sn wires. 1.2 AC loss measurement in Nb-Ti wires. (2) Establishment of reliable measurement techniques for cryogenic structural materials. 2.1 Tensile measurement at 4.2K in SUS 316 LN, YUS 170 and Ti-Al-Sn alloy. 2.2 Fracture toughness measurement at 4.2K in the same steels and alloy. 2.3 Electrical strain gauge calibration at cryogenic temperatures. Future possible cooperation programs of this area will be also described.
The SMES researches have been performed mainly aiming at large scale SMES for nighttime energy storage and daytime power supply. Recently, however, the usefulness of medium or small scale SMES have been recognized and its studies have been started. In this paper, SMES technology is reviewed, both of large scale and small one, and the two projects now in progress are explained, the one in Japan for 100kWh SMES and the other also in the United States for 20MWh one. The former is a prototype of the small scale SMES aiming the multipurpose usage in power systems such as compensation for impulsive loads, and system stabilization for disturbances and heavy loads etc. The latter is considered as an intermediate step for the development of the ultimate large scale SMES. The hopeful role expected for the energy problems under the global environmental conditions will drive us to continue the SMES R and D enthusiastically.
In recent years, SQUID is used in various fields. This paper presents the basic information for the application of SQUID to various measurements. The principle of SQUID, the configuration of pick up system and the way to decrease noise are described.