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Theis, C.*; Carbonez, P.*; Feldbaumer, E.*; Forkel-Wirth, D.*; Jaegerhofer, L.*; Pangallo, M.*; Perrin, D.*; Urscheler, C.*; Roesler, S.*; Vincke, H.*; et al.
EPJ Web of Conferences, 153, p.08018_1 - 08018_5, 2017/09
Times Cited Count：0 Percentile：0.03At CERN, gas-filled ionization chambers PTW-34031 (PMI) are commonly used in radiation fields including neutrons, protons and 
-rays. A response function for each particle is calculated by the radiation transport code FLUKA. To validate a response function to high energy neutrons, benchmark experiments with quasi mono-energetic neutrons have been carried out at RCNP, Osaka University. For neutron irradiation with energies below 200 MeV, very good agreement was found comparing the FLUKA simulations and the measurements. In addition it was found that at proton energies of 250 and 392 MeV, results calculated with neutron sources underestimate the experimental data due to a non-negligible gamma component originating from the target 
Li(p,n)Be reaction.
Li(p,n) reactions using a time-of-flight methodIwamoto, Yosuke; Hagiwara, Masayuki*; Satoh, Daiki; Araki, Shohei*; Yashima, Hiroshi*; Sato, Tatsuhiko; Masuda, Akihiko*; Matsumoto, Tetsuro*; Nakao, Noriaki*; Shima, Tatsushi*; et al.
Nuclear Instruments and Methods in Physics Research A, 804, p.50 - 58, 2015/12
Times Cited Count：20 Percentile：89.78(Instruments & Instrumentation)We have measured neutron energy spectra for the 80, 100 and 296 MeV proton incident reactions at the RCNP cyclotron facility using time-of-flight method. The neutron energy spectrum consisted of the peak and continuum parts and the peak intensity was 0.9-1.1 
10
neutrons/sr/
C. The ratio of peak intensity of the spectrum to the total intensity was between 0.38 and 0.48. To consider the correction required to derive a response in the peak region from the measured total response for neutron monitors, we proposed the subtraction method using energy spectra between 0
and 25. The normalizing factor k against the 25 neutron fluence that equalizes the 0 neutron fluence in the continuum region was from 0.74 to 1.02. With our previous results, we have obtained data for characterization of monoenergetic neutron field for the Li(p,n) reaction with 80
389 MeV protons at the RCNP cyclotron facility.
Takamura, Shuichi*; Kado, Shinichiro*; Fujii, Takashi*; Fujiyama, Hiroshi*; Takabe, Hideaki*; Adachi, Kazuo*; Morimiya, Osamu*; Fujimori, Naoji*; Watanabe, Takayuki*; Hayashi, Yasuaki*; et al.
Kara Zukai, Purazuma Enerugi No Subete, P. 164, 2007/03
no abstracts in English
Aso, Naofumi*; Owada, Kenji; Watanuki, Tetsu; Machida, Akihiko; Omura, Ayako; Inami, Toshiya; Homma, Yoshiya*; Shiokawa, Yoshinobu*; Hirota, Kazuma*; Sato, Noriaki*
Journal of the Physical Society of Japan, 75(Suppl.), p.88 - 90, 2006/08
no abstracts in English
Al
, 1; Surveys in reciprocal space using neutron inelastic scatteringHiess, A.*; Bernhoeft, N.*; Metoki, Naoto; Lander, G.*; Roessli, B.*; Sato, Noriaki*; Aso, Naofumi*; Haga, Yoshinori; Koike, Yoshihiro*; Komatsubara, Takemi*; et al.
Journal of Physics; Condensed Matter, 18(27), p.R437 - R451, 2006/07
Times Cited Count：31 Percentile：33.53(Physics, Condensed Matter)This topical review presents results from neutron inelastic scattering experiments on single crystals of UPdAl. We present a detailed and complete characterization of the wave vector- and energy-dependent magnetization dynamics in UPdAl as measured by neutron inelastic scattering primarily in the form of extensive surveys in energy-momentum space under a wide range of experimental conditions, and put our observations in context with data that has been published previously by two independent groups. This study yields unique insight into the low-temperature ground state, which exhibits a microscopic coexistence of antiferromagnetism and superconductivity, makingUPdAl one of the most accessible heavy-fermion superconductors that can be fully characterized by neutron spectroscopy.
Uchiyama, Gunzo; Mineo, Hideaki; Asakura, Toshihide; Hotoku, Shinobu; Iizuka, Masaru*; Fujisaki, Susumu; Isogai, Hikaru; Ito, Yoshinori*; Sato, Makoto; Hosoya, Noriaki
Journal of Nuclear Science and Technology, 39(Suppl.3), p.925 - 928, 2002/11
no abstracts in English
Yabuuchi, Noriaki; Takahashi, Masao*; Nakazawa, Toshio; Sato, Kazuo*; Shimazaki, Junya; Ochiai, Masaaki
JAERI-Research 2000-064, 76 Pages, 2001/02
JAERI-Research-2000-064.pdf:5.88MB
no abstracts in English
Yabuuchi, Noriaki; Takahashi, Masao*; Nakazawa, Toshio; Sato, Kazuo*; Shimazaki, Junya; Ochiai, Masaaki
JAERI-Research 2000-063, 69 Pages, 2001/02
JAERI-Research-2000-063.pdf:4.41MB
no abstracts in English
Nakashima, Hiroshi; Shibata, Tokushi; Sawahata, Kei; Miyamoto, Yukihiro; Nakane, Yoshihiro; Masukawa, Fumihiro; Seki, Kazunari; Sato, Koichi; Oguri, Tomomi*; Hirayama, Hideo*; et al.
no journal, ,
Aiming at studies on the latest basic science and the advancing nuclear technology, the J-PARC (Japan Proton Accelerator Research Complex) project is in progress, and the high-energy proton accelerator complex of the world highest intensity is under construction. Because of its very high beam power and its energy as well as the large-scale accelerator complex, we have encountered some difficult radiation problems in the radiation safety design. This paper reviews the radiation safety policy and methods for the design to overcome the problems on the radiation safety and the status of the radiation safety estimation for licensing of J-PARC.
at very low temperatureHigemoto, Wataru; Sato, Kazuhiko*; Ito, Takashi; Nishida, Nobuhiko*; Oishi, Kazuki*; Heffner, R. H.; Haga, Yoshinori; Yamamoto, Etsuji; Kimura, Noriaki*; Onuki, Yoshichika; et al.
no journal, ,
The unconventional superconductivity in heavy fermion UPt attracted much interest. In recent neutron experiment, the narrowing of the AF Bragg peak at low temperature was observed, from which they suggest that a quasistatic AF long range order is realized below 20 mK. We have extended ZF-SR measurement down to 8 mK to investigate the anomalous magnetic state over the very low temperature region. In our ZF-SR, there is no significant change in the muon spinrelaxation rate down to 8 mK. The result suggests the absence of static or quasistaticmagnetic order over the relevant temperature range.
Kiriyama, Hiromitsu; Mori, Michiaki; Shimomura, Takuya; Tanoue, Manabu; Kondo, Shuji; Kanazawa, Shuhei; Daito, Izuru; Suzuki, Masayuki*; Okada, Hajime; Ochi, Yoshihiro; et al.
no journal, ,
We describe two specific high intensity laser systems that are being developed in our laboratory for many applications such as high field science, nonlinear optics. We report on an ultra-high intensity petawatt-class Ti:sapphire chirped-pulse amplification laser system that can produce a pulse energy of 18 J with 30 fs pulse duration for studying extremely high intensity laser matter interaction process and a small-scaled Yb:YAG chirped-pulse amplification laser system that can generate a pulse energy of 100 m J of 500 fs pulse duration for compact, high efficiency, high repetition system. We discuss the basic design aspects and present the results from our experimental investigations of these laser systems.
Al and UPdAlScheneidewind, A.*; Hiess, A.*; Stockert, O.*; Aso, Naofumi*; Sato, Noriaki*; Raymond, S.*; Kaneko, Koji; Blackburn, E.*; Steffens, P.*; Lander, G. H.*
no journal, ,
SR measurement of single-crystalline SmSIto, Takashi; Higemoto, Wataru; Suzuki, Hiroyuki*; Imura, Keiichiro*; Sato, Noriaki*
no journal, ,
no abstracts in English
Yoneyama, Kai*; Sato, Isamu*; Hagura, Naoto*; Furuya, Noriaki*; Miwa, Shuhei; Suzuki, Eriko
no journal, ,
In order to clarify the Cs penetration behavior into concrete, the Cs penetration tests from low-concentration Cs solution into aggregate, mortar and concrete was carried out. The concentrations of penetrated Cs along the depth from surface were analyzed using INAA. At the depths deeper than 0.5 mm, the concentration of Cs in concrete was higher than the total concentration of Cs in aggregate and mortar. This result has been shown also in the previous penetration tests using more high-concentration Cs solution. These are considered to be occurred because interface of aggregates and mortar would promote the penetration of Cs.
Furuya, Noriaki*; Sato, Isamu*; Hagura, Naoto*; Yoneyama, Kai*; Miwa, Shuhei; Suzuki, Eriko
no journal, ,
In order to develop an analysis technique of penetrated Cs into concrete, the concentration of penetrated Cs into bulk concretes and bulk mortars were quantitatively analyzed using PIXE. The results of concentration decrease along the depth from surface proved the applicability of PIXE to the quantitative analyses of low-concentration Cs in bulk samples. This can reduce experimental errors and contribute to a detailed estimation of Cs penetration behavior.
Furuya, Noriaki*; Sato, Isamu*; Hagura, Naoto*; Yoneyama, Kai*; Miwa, Shuhei; Suzuki, Eriko
no journal, ,
In order to develop an analysis technique of penetrated Cs into concrete, the concentration of penetrated Cs into bulk concretes and bulk mortars were quantitatively analyzed using PIXE. The difference of penetration depth between concretes and mortars, which has been observed also in the Cs penetration tests using more high-concentration Cs solutions, was observed. These results showed the applicability of PIXE to the quantitative analyses of low-concentration Cs in bulk samples.
