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213 results on '"Fukuzawa Y"'

1. Injection of high energetic ion beams to superfluid helium as a host matrix of laser spectroscopic study of radioisotope atoms

Author

Imamura, K., Takamine, A., Kikuchi, K., Mitsuyasu, R., Akimoto, S., Ito, M., Tsubura, K., Gladkov, A., Tajima, M., Go, S., Mukai, M., Doi, M., Nishimura, M., Yamamoto, T., Endo, H., Fukuzawa, Y., Sasamori, S., Takahashi, S., Hase, M., Kawata, K., Nishibata, H., Ichikawa, Y., Kitagawa, A., Wakui, T., Ueno, H., and Matsuo, Y.

Published
2024
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2. First demonstration of emulsion multi-stage shifter for accelerator neutrino experiment in J-PARC T60

Author

Yamada, K., Aoki, S., Cao, S., Chikuma, N., Fukuda, T., Fukuzawa, Y., Gonin, M., Hayashino, T., Hayato, Y., Hiramoto, A., Hosomi, F., Ishiguro, K., Iori, S., Inoh, T., Kawahara, H., Kim, H., Kitagawa, N., Koga, T., Komatani, R., Komatsu, M., Matsushita, A., Mikado, S., Minamino, A., Mizusawa, H., Morishima, K., Matsuo, T., Matsumoto, T., Morimoto, Y., Morishita, M., Nakamura, K., Nakamura, M., Nakamura, Y., Naganawa, N., Nakano, T., Nakaya, T., Nakatsuka, Y., Nishio, A., Ogawa, S., Oshima, H., Quilain, B., Rokujo, H., Sato, O., Seiya, Y., Shibuya, H., Shiraishi, T., Suzuki, Y., Tada, S., Takahashi, S., Yoshimoto, M., and Yokoyama, M.

Subjects
Physics - Instrumentation and Detectors
Abstract

We describe the first ever implementation of an emulsion multi-stage shifter in an accelerator neutrino experiment. The system was installed in the neutrino monitor building in J-PARC as a part of a test experiment T60 and stable operation was maintained for a total of 126.6 days. By applying time information to emulsion films, various results were obtained. Time resolutions of 5.3 to 14.7 s were evaluated in an operation spanning 46.9 days (time resolved numbers of 3.8--1.4$\times10^{5}$). By using timing and spatial information, a reconstruction of coincident events that consisted of high multiplicity events and vertex events, including neutrino events was performed. Emulsion events were matched to events observed by INGRID, one of near detectors of the T2K experiment, with high reliability (98.5\%) and hybrid analysis was established via use of the multi-stage shifter. The results demonstrate that the multi-stage shifter is feasible for use in neutrino experiments.

Published
2017

3. First neutrino event detection with nuclear emulsion at J-PARC neutrino beamline

Author

Fukuda, T., Aoki, S., Cao, S., Chikuma, N., Fukuzawa, Y., Gonin, M., Hayashino, T., Hayato, Y., Hiramoto, A., Hosomi, F., Ishiguro, K., Iori, S., Inoh, T., Kawahara, H., Kim, H., Kitagawa, N., Koga, T., Komatani, R., Komatsu, M., Matsushita, A., Mikado, S., Minamino, A., Mizusawa, H., Morishima, K., Matsuo, T., Matsumoto, T., Morimoto, Y., Morishita, M., Nakamura, K., Nakamura, M., Nakamura, Y., Naganawa, N., Nakano, T., Nakaya, T., Nakatsuka, Y., Nishio, A., Ogawa, S., Oshima, H., Quilain, B., Rokujo, H., Sato, O., Seiya, Y., Shibuya, H., Shiraishi, T., Suzuki, Y., Tada, S., Takahashi, S., Yamada, K., Yoshimoto, M., and Yokoyama, M.

Subjects
High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

Precise neutrino--nucleus interaction measurements in the sub-multi GeV region are important to reduce the systematic uncertainty in future neutrino oscillation experiments. Furthermore, the excess of ${\nu_e}$ interactions, as a possible interpretation of the existence of a sterile neutrino has been observed in such an energy region. The nuclear emulsion technique can measure all the final state particles with low energy threshold for a variety of targets (Fe, C, H${_2}$O, and so on). Its sub-$\mu$m position resolution allows measurements of the ${\nu_e}$ cross-section with good electron/gamma separation capability. We started a new experiment at J-PARC to study sub-multi GeV neutrino interactions by introducing the nuclear emulsion technique. The J-PARC T60 experiment has been implemented as a first step of such a project. Systematic neutrino event analysis with full scanning data in the nuclear emulsion detector was performed for the first time. The first neutrino event detection and its analysis is described in this paper., Comment: 26 pages, 29 figures, 4 table, prepared for submission to PTEP

Published
2017
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8. NMN Nicotinamide Mononucleotide Activates Intracellular Energy and Approaches the Prevention and Improvement of Aging

Author

Kawakami S, Fukuzawa Y, Ichikawa H, Sato T, Ide T, Maeda Y, Yamamoto T.

Subjects
AMPK, Aging, NMN, NAD+, Functional food, Vitamins
Abstract

Aging was defined as one of the diseases by ICD-11. Preventing aging may avoid the risk of various diseases. However, it is difficult to simply prevent aging in daily life. The presence of nutrients is essential there. This time, we reviewed NMN "nicotinamide nucleotide", which is attracting attention as an anti-aging component, and conducted additional experiments using AMPK "AMP-activated protein kinase" and NAD + as indicators to determine whether or not it actually prevents aging gone. As a result, a significant increase in AMPK and NAD + was confirmed, suggesting that NMN may help prevent aging in the future.

Published
2022

22. First neutrino event detection with nuclear emulsion at J-PARC neutrino beamline

Author

Fukuda, T., primary, Aoki, S., additional, Cao, S., additional, Chikuma, N., additional, Fukuzawa, Y., additional, Gonin, M., additional, Hayashino, T., additional, Hayato, Y., additional, Hiramoto, A., additional, Hosomi, F., additional, Ishiguro, K., additional, Iori, S., additional, Inoh, T., additional, Kawahara, H., additional, Kim, H., additional, Kitagawa, N., additional, Koga, T., additional, Komatani, R., additional, Komatsu, M., additional, Matsushita, A., additional, Mikado, S., additional, Minamino, A., additional, Mizusawa, H., additional, Morishima, K., additional, Matsuo, T., additional, Matsumoto, T., additional, Morimoto, Y., additional, Morishita, M., additional, Nakamura, K., additional, Nakamura, M., additional, Nakamura, Y., additional, Naganawa, N., additional, Nakano, T., additional, Nakaya, T., additional, Nakatsuka, Y., additional, Nishio, A., additional, Ogawa, S., additional, Oshima, H., additional, Quilain, B., additional, Rokujo, H., additional, Sato, O., additional, Seiya, Y., additional, Shibuya, H., additional, Shiraishi, T., additional, Suzuki, Y., additional, Tada, S., additional, Takahashi, S., additional, Yamada, K., additional, Yoshimoto, M., additional, and Yokoyama, M., additional

Published
2017
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23. First demonstration of an emulsion multi-stage shifter for accelerator neutrino experiments in J-PARC T60

Author

Yamada, K., primary, Aoki, S., additional, Cao, S., additional, Chikuma, N., additional, Fukuda, T., additional, Fukuzawa, Y., additional, Gonin, M., additional, Hayashino, T., additional, Hayato, Y., additional, Hiramoto, A., additional, Hosomi, F., additional, Inoh, T., additional, Iori, S., additional, Ishiguro, K., additional, Kawahara, H., additional, Kim, H., additional, Kitagawa, N., additional, Koga, T., additional, Komatani, R., additional, Komatsu, M., additional, Matsushita, A., additional, Mikado, S., additional, Minamino, A., additional, Mizusawa, H., additional, Matsumoto, T., additional, Matsuo, T., additional, Morimoto, Y., additional, Morishima, K., additional, Morishita, M., additional, Naganawa, N., additional, Nakamura, K., additional, Nakamura, M., additional, Nakamura, Y., additional, Nakano, T., additional, Nakatsuka, Y., additional, Nakaya, T., additional, Nishio, A., additional, Ogawa, S., additional, Oshima, H., additional, Quilain, B., additional, Rokujo, H., additional, Sato, O., additional, Seiya, Y., additional, Shibuya, H., additional, Shiraishi, T., additional, Suzuki, Y., additional, Tada, S., additional, Takahashi, S., additional, Yokoyama, M., additional, and Yoshimoto, M., additional

Published
2017
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