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2. Concept of a novel tabletop THz FEL amplifier

Author

Kii, T., primary, Higashimura, K., additional, Bakr, M. A., additional, Kinjo, R., additional, Yoshida, K., additional, Ueda, S., additional, Sonobe, T., additional, Masuda, K., additional, and Ohgaki, H., additional

Published
2009
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6. Low-Temperature Operation of a Bulk HTSC Staggered Array Undulator.

Author

Kii, T., Kinjo, R., Kimura, N., Shibata, M., Bakr, M. A., Choi, Y. W., Omer, M., Yoshida, K., Ishida, K., Komai, T., Shimahashi, K., Sonobe, T., Zen, H., Masuda, K., and Ohgaki, H.

Subjects
HIGH temperature superconductors, WIGGLER magnets, MAGNETIC fields, MAGNETIZATION, SOLENOIDS, LIQUID nitrogen
Abstract

A use of bulk high-temperature superconductors (HTSs) for an undulator is attractive since a high magnetic field can be generated at low-temperatures. While potential for generation of the high magnetic field is high, in-situ magnetization of the bulk HTSs for periodic field generation is challenging issue. Recently, we proposed a new type of undulator using bulk high-Tc superconductors (HTS) and a solenoid magnet. The undulator, named Bulk HTSC staggered array undulator (Bulk HTSC SAU), consists of a stacked array of bulk HTSs and copper insulators and a solenoid magnet. A proof of principle experiment at 77 K using liquid nitrogen has been carried out. The estimated performance at about 30 K was estimated using results of property measurements for the HTS used for the Bulk HTSC SAU. The expected undulator peak field reaches to 1.08 T for undulator period length of 9.9 mm for the undulator gap of 4.0 mm. This performance is about 2 times higher than that of existing technologies. [ABSTRACT FROM PUBLISHER]

Published
2012
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12. More Than 24 Hours Digital Holter ECG System

Author

Nitta, S., primary, Katahira, Y., additional, Yambe, T., additional, Sonobe, T., additional, Hayashi, H., additional, Naganuma, S., additional, Akiho, H., additional, Tanaka, M., additional, Shirakawa, O., additional, Okamoto, Y., additional, Okazaki, T., additional, and Kusakabe, M., additional

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