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106. Commissioning of the PF Ring after the Reconstruction for the Straight-sections Upgrade

Author

Honda, T., primary, Asaoka, S., additional, Cheng, W. X., additional, Haga, K., additional, Harada, K., additional, Hori, Y., additional, Izawa, M., additional, Kasuga, T., additional, Kobayashi, Y., additional, Maezawa, H., additional, Mishina, A., additional, Mitsuhashi, T., additional, Miyajima, T., additional, Miyauchi, H., additional, Nagahashi, S., additional, Nogami, T., additional, Obina, T., additional, Pak, C. O., additional, Sakanaka, S., additional, Sasaki, H., additional, Sato, Y., additional, Shioya, T., additional, Tadano, M., additional, Takahashi, T., additional, Tanimoto, Y., additional, Tsuchiya, K., additional, Uchiyama, T., additional, Ueda, A., additional, Umemori, K., additional, and Yamamoto, S., additional

Published
2007
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107. PF-ring and PF-AR operational status

Author

Kobayashi, Y., primary, Asaoka, S., additional, Cheng, W. X., additional, Haga, K., additional, Harada, K., additional, Honda, T., additional, Izawa, M., additional, Kasuga, T., additional, Maezawa, H., additional, Mishina, A., additional, Mitsuhashi, T., additional, Miyajima, T., additional, Miyauchi, H., additional, Nagahashi, S., additional, Nogami, T., additional, Obina, T., additional, Pak, C.O., additional, Sakanaka, S., additional, Sasaki, H., additional, Sato, Y., additional, Shioya, T., additional, Tadano, M., additional, Takahashi, T., additional, Tanimoto, Y., additional, Tsuchiya, K., additional, Uchiyama, T., additional, Ueda, A., additional, Umemori, K., additional, Yamamoto, S., additional, Ieiri, T., additional, Isagawa, S., additional, Kageyama, T., additional, Kikuchi, M., additional, Kudo, K., additional, Nakamura, T. T., additional, Nakanishi, H., additional, Oide, K., additional, Ono, M., additional, Ozaki, T., additional, Sakai, H., additional, Sakamoto, Y., additional, Takasaki, S., additional, Tejima, M., additional, Yoshida, M., additional, and Yoshimoto, S., additional

Published
2007
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108. Status of the 6.5-GeV Photon Factory Advanced Ring

Author

Miyajima, T., primary, Adachi, S., additional, Cheng, W. X., additional, Haga, K., additional, Harada, K., additional, Hori, Y., additional, Hyodo, K., additional, Ieiri, T., additional, Isagawa, S., additional, Kageyama, T., additional, Kasuga, T., additional, Kawata, H., additional, Kikuchi, M., additional, Kobayashi, Y., additional, Kudo, K., additional, Mitsuhashi, T., additional, Nagahashi, S., additional, Nakamura, T. T., additional, Nakanishi, H., additional, Nogami, T., additional, Obina, T., additional, Ohsawa, Y., additional, Ono, M., additional, Ozaki, T., additional, Sakai, H., additional, Sakamoto, Y., additional, Sakanaka, S., additional, Sato, M., additional, Satoh, M., additional, Shioya, T., additional, Sugahara, R., additional, Tadano, M., additional, Takahashi, T., additional, Takasaki, S., additional, Tanimoto, Y., additional, Tejima, M., additional, Tsuchiya, K., additional, Uchiyama, T., additional, Ueda, A., additional, Umemori, K., additional, Yamamoto, S., additional, and Yoshimoto, S., additional

Published
2007
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109. Status of R&D efforts toward the ERL-based future light source in Japan

Author

Kasuga, T., primary, Agoh, T., additional, Enomoto, A., additional, Fukuda, S., additional, Furukawa, K., additional, Furuya, T., additional, Haga, K., additional, Harada, K., additional, Hiramatsu, S., additional, Honda, T., additional, Hosoyama, K., additional, Izawa, M., additional, Kako, E., additional, Kawata, H., additional, Kikuchi, M., additional, Kobayashi, Y., additional, Kuriki, M., additional, Mitsuhashi, T., additional, Miyajima, T., additional, Naito, T., additional, Nagahashi, S., additional, Nogami, T., additional, Noguchi, S., additional, Obina, T., additional, Ohsawa, S., additional, Ono, M., additional, Ozaki, T., additional, Sakanaka, S., additional, Sasaki, H., additional, Sasaki, S., additional, Satoh, K., additional, Satoh, M., additional, Shioya, T., additional, Shishido, T., additional, Suwada, T., additional, Tadano, M., additional, Takahashi, T., additional, Tanimoto, Y., additional, Tawada, M., additional, Tobiyama, M., additional, Tsuchiya, K., additional, Uchiyama, T., additional, Umemori, K., additional, Yamamoto, S., additional, Hajima, R., additional, Iijima, H., additional, Kikuzawa, N., additional, Minehara, E. J., additional, Nagai, R., additional, Nishimori, N., additional, Sawamura, M., additional, Ishii, A., additional, Ito, I., additional, Kudoh, H., additional, Nakamura, N., additional, Sakai, H., additional, Shibuya, T., additional, Shinoe, K., additional, Takaki, H., additional, Katoh, M., additional, Mochihashi, A., additional, Shimada, M., additional, Hanaki, H., additional, and Tomizawa, H., additional

Published
2007
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111. A new astronomical facility for Peru: transforming a telecommunication's 32-metre antenna into a radio-telescope

Author

Ishitsuka, José, primary, Ishitsuka, M., additional, Kaifu, N., additional, Inoue, M., additional, Tsuboi, M., additional, Ohishi, M., additional, Kondo, T., additional, Koyama, Y., additional, Kasuga, T., additional, Fujisawa, K., additional, Miyazawa, K., additional, Miyoshi, M., additional, Umemoto, T., additional, Bushimata, T., additional, Horiuchi, S., additional, and Vidal, E., additional

Published
2006
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133. On the Substantial Spatial Spread of the Quadrantid Meteoroid Stream.

Author

Trigo-Rodríguez, J. M., Rietmeijer, F. J. M., Llorca, J., Janches, D., Ohtsuka, K., Yoshikawa, M., Watanabe, J., Hidaka, E., Murayama, H., and Kasuga, T.

Abstract

We explored the substantial spatial spread of the Quadrantid stream, based on the backward integration of orbital motions of the Quadrantids, impulsively perturbed by Jupiter. We found that the Jovian impulses can widely spread out them in the early twentieth century, especially their perihelia extended by a factor of ~90 than those at the observed epoch. We regarded the spread as the intrinsic one of the Quadrantid stream itself. [ABSTRACT FROM AUTHOR]

Published
2008
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138. Status of PF-AR.

Author

Abe, T., Ebihara, K., Ezura, E., Haga, K., Harada, K., Hori, Y., Ieiri, T., Isagawa, S., Kageyama, T., Kasuga, T., Katoh, T., Kawata, H., Kikuchi, M., Kobayashi, M., Kobayashi, Y., Kudo, K., Minagawa, Y., Mitsuhashi, T., Miyajima, T., and Nagahashi, S.

Subjects
LIGHT sources, X-ray diffraction, X-ray scattering, ELECTRON scattering, COLLIDERS (Nuclear physics), PHOTONS
Abstract

The PF-AR is a full-time single-bunch light source for SR experiments in the X-ray region. Electrons are injected at 3.0 GeV and ramped up to the final energy of 6.5 GeV for normal user operation or 5.0 GeV for medical application. The typical initial beam current is 55 mA at 6.5 GeV and the beam lifetime is 15 h at 50 mA. The initial single-bunch impurity better than 10-8 was achieved, however, degradation of the impurity during the users’ run has to be solved. Since the present emittance of 290nm·rad is not satisfactory, we are making an effort to realize the minimum attainable emittance of 160nm·rad. The high quality of pulse X-ray has brought us abundant occasions to do time-domain and/or time-resolved measurements. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2004
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139. New Upgrade Project for the Photon Factory Storage Ring.

Author

Asaoka, S., Haga, K., Harada, K., Honda, T., Hori, Y., Izawa, M., Kasuga, T., Kobayashi, M., Kobayashi, Y., Maezawa, H., Minagawa, Y., Mishina, A., Mitsuhashi, T., Miyajima, T., Miyauchi, H., Nagahashi, S., Nogami, T., Obina, T., Pak, C. O., and Sakanaka, S.

Subjects
PHOTON factories, STORAGE rings, PARTICLE accelerators, WIGGLER magnets, SYNCHROTRON radiation sources, OPTICS
Abstract

A new project for upgrading the 2.5-GeV Photon Factory (PF) storage ring is now being undertaken to create six new short-straight sections and to lengthen the existing eight straight sections. The short-straight sections will provide an opportunity to install short-period narrow-gap undulators, while the extensions of existing straight sections will be taken advantage of updating current insertion devices to the latest models in future. To this end, the lattice configuration around the straight sections is modified by replacing old quadrupole magnets with new shorter ones and placing them closer to the near-by bending magnets. Necessary replacement of the vacuum ducts and the beamline front ends will be carried out together. This project will be completed by the end of September, 2005, after six months of shutdown. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2004
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141. Bunch lengthening in compact SR source HiSOR

Author

Fujita, T., primary, Goto, K., additional, Kasuga, T., additional, Katoh, M., additional, Kobayashi, Y., additional, Masaki, F., additional, Obina, T., additional, Tobiyama, M., additional, Umemori, K., additional, Yadomi, K., additional, and Yoshida, K., additional

Published
2001
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144. First result of June Boötid meteor spectrum

Author

Kasuga, T., Watanabe, J., Ebizuka, N., Sugaya, T., Sato, Y., Kasuga, T., Watanabe, J., Ebizuka, N., Sugaya, T., and Sato, Y.

Abstract

This paper shows the first observational result of a spectrum of a June Boötid meteor obtained by the High-Definition TV observational system. The very faint spectrum appeared at $15^{\rm h} 59^{\rm m} 29.693^{\rm s}$on 2004 June 23 UT, which was about 5th magnitude. Wavelengths between 360-620 nm were observed, and the strong emissions of neutral atoms as MgI, FeI and NaI were identified. Emissions of single ionized atoms were not observed. The abundances of metallic atoms, their excitation temperature were obtained under the Local Thermal Equilibrium (LTE) conditions. The results, $\rm Fe/Mg = 0.15$and $\rm Na/Mg = 0.00027$suggest the possibility that the abundances of June Boötid meteor are extremely different from the solar system abundances. The excitation temperature value, $3867 \pm 13$K is low in agreement with their slow moving velocity.

Published
2004
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147. Molecular typing of pathogenic fungi

Author

McEwen, J. G., primary, Taylor, J. W., additional, Carter, D., additional, Xu, J., additional, Felipe, M. S. S., additional, Vilgalys, R., additional, Mitchell, T. G., additional, Kasuga, T., additional, White, T., additional, Bui, T., additional, and Soares, C. M. A., additional

Published
2000
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