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Your search keyword '"H. B. Kim"' showing total 3 results
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3 results on '"H. B. Kim"'

1. The Telescope Array experiment: Status and Prospects

Author

H. Tokuno, T. Abu-Zayyad, R. Aida, M. Allen, R. Azuma, E. Barcikowski, J. W. Belz, T. Benno, D. R. Bergman, S. A. Blake, O. Brusova, R. Cady, B. G. Cheon, J. Chiba, M. Chikawa, E. J. Cho, L. S. Cho, W. R. Cho, F. Cohen, K. Doura, C. Ebeling, H. Fujii, T. Fujii, T. Fukuda, M. Fukushima, D. Gorbunov, W. Hanlon, K. Hayashi, Y. Hayashi, N. Hayashida, K. Hibino, K. Hiyama, K. Honda, G. Hughes, T. Iguchi, D. Ikeda, K. Ikuta, S. J. J. Innemee, N. Inoue, T. Ishii, R. Ishimori, D. Ivanov, S. Iwamoto, C. C. H. Jui, K. Kadota, F. Kakimoto, O. Kalashev, T. Kanbe, H. Kang, K. Kasahara, H. Kawai, S. Kawakami, S. Kawana, E. Kido, B. G. Kim, H. B. Kim, J. H. Kim, A. Kitsugi, K. Kobayashi, H. Koers, Y. Kondo, V. Kuzmin, Y. J. Kwon, J. H. Lim, S. I. Lim, S. Machida, K. Martens, J. Martineau, T. Matsuda, T. Matsuyama, J. N. Matthews, M. Minamino, K. Miyata, H. Miyauchi, Y. Murano, T. Nakamura, S. W. Nam, T. Nonaka, S. Ogio, M. Ohnishi, H. Ohoka, T. Okuda, A. Oshima, S. Ozawa, I. H. Park, D. Rodriguez, S. Y. Roh, G. Rubtsov, D. Ryu, H. Sagawa, N. Sakurai, L. M. Scott, P. D. Shah, T. Shibata, H. Shimodaira, B. K. Shin, J. D. Smith, P. Sokolsky, T. J. Sonley, R. W. Springer, B. T. Stokes, S. R. Stratton, S. Suzuki, Y. Takahashi, M. Takeda, A. Taketa, M. Takita, Y. Tameda, H. Tanaka, K. Tanaka, M. Tanaka, J. R. Thomas, S. B. Thomas, G. B. Thomson, P. Tinyakov, I. Tkachev, T. Tomida, R. Torii, S. Troitsky, Y. Tsunesada, Y. Tsuyuguchi, Y. Uchihori, S. Udo, H. Ukai, B. VanKlaveren, Y. Wada, M. Wood, T. Yamakawa, Y. Yamakawa, H. Yamaoka, J. Yang, S. Yoshida, H. Yoshii, Z. Zundel, Hajime Susa, Marcel Arnould, Sydney Gales, Tohru Motobayashi, Christoph Scheidenberger, and Hiroaki Utsunomiya

Subjects
Physics, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Cosmic ray, 01 natural sciences, law.invention, Telescope, Air shower, law, 0103 physical sciences, Reflection (physics), High Energy Physics::Experiment, Ultra-high-energy cosmic ray, 010306 general physics
Abstract

The Telescope Array is a detector of extensive air shower produced by ultra High energy cosmic ray. This detector is located on Utah, USA. The construction have been completed and the full operation has been running from March 2008. In this talk, the status of observation and our prospects are described.

Published
2010

2. Investigation of the Characteristics for the Pulse Tube Refrigerator Using Active Phase Controller as a Phasor

Author

D. Y. Koh, Y. J. Hong, S. J. Park, S. Masuyama, H. B. Kim, S. H. Lee, and Y. H. Kim

Subjects
Engineering, Control theory, business.industry, Mass flow, Phase angle, Phasor, Tube (fluid conveyance), Pulse tube refrigerator, business, Phase shift module, Linear compressor
Abstract

A phase shifter, which controls the phase angle between the mass flow and the pressure, plays a key role in the performance of a pulse tube refrigerator. The purpose of this paper is to examine the influence of an active phase controller (APC) instead of using inertance and buffer as a phasor. An electrically driven and mechanically damped linear compressor, which is directly connected at the warm end of the pulse tube using a connecting tube, is used as the APC. Therefore, this Stirling type active phase control pulse tube refrigerator (APCPTR) has no reservoir. The advantage of this phase shifter is that it is easy to control the electric input power and the phase angle. Also, the APCPTR is able to operate at any desired temperature region or condition. In order to clarify the characteristics of APCPTR, the cold end temperature and power consumption of the APCPTR has been measured.

Published
2006

3. An Experimental Study for the Coaxial Inertance Tube Pulse Tube Cryocooler

Author

Y. J. Hong, S. J. Park, Y. H. Kim, K. B. Lee, and H. B. Kim

Subjects
Vibration, Engineering, Volume (thermodynamics), business.industry, Acoustics, Electrical engineering, Tube (fluid conveyance), Cryogenics, Coaxial, Cryocooler, business, Pulse tube refrigerator, Inertance
Abstract

The pulse tube cryocooler, which has no moving parts at its cold section, is attractive for obtaining higher reliability, simpler construction and lower vibration than in any other small cryocooler. The most compact and convenient pulse tube cryocooler for practical applications is the coaxial type. It can replace Stirling cryocooler without any change to the Dewar or the connection to the cooled devices. The experimental results of the coaxial inertance tube pulse tube cryocooler for cooling superconductor RF filter are presented in this paper. To find optimal conditions of inertance tube pulse tube cryocooler, no load temperature according to the variations of inertance tube volume, reservoir volume are measured, and the cool down characteristics at particular conditions are presented. In case of the in‐line type inertance tube pulse tube refrigerator, the lowest temperature obtained in the present study is 69.4 K at initial input power 220 W using the diameter 1.9 mm, length 1.9 m of inertance tube wit...

Published
2004

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