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He Neutron Spin Filter (NSF) in the MLF at J-PARCSakai, Kenji; Oku, Takayuki; Hayashida, Hirotoshi*; Kira, Hiroshi*; Hiroi, Kosuke; Ino, Takashi*; Oyama, Kenji*; Okawara, Manabu*; Kakurai, Kazuhisa; Shinohara, Takenao; et al.
JPS Conference Proceedings (Internet), 8, p.036015_1 - 036015_6, 2015/09
The polarized He filter, which polarizes neutrons due to a large neutron absorption cross section of He with strong spin selectivity, becomes a convenient neutron spin filter (NSF) because it is operated immediately after its installation in beam lines without any neutron beam adjustments. For realizing such the NSF, a nuclear magnetic resonance (NMR) system is indispensable for monitoring He nuclear spin polarization 
of the NSF. We have developed the flexible NMR system based on adiabatic fast passage (AFP) and pulse NMR methods by using their complementary features. In comparing with the values of obtained by neutron transmission measurement at the beam line 10 of the J-PARC, we measured the correlations between the AFP and pulse NMR signals as changing condition of temperature, amplitude and applying period of the radio frequency field for the pulse NMR, and so on. As the results, we confirmed that our system would function enough as the monitor.
Oshima, Takeshi; Onoda, Shinobu; Iwamoto, Naoya; Makino, Takahiro; Arai, Manabu*; Tanaka, Yasunori*
Physics and Technology of Silicon Carbide Devices, p.379 - 402, 2012/10
SiC is regarded as a promising candidate for electronic devices used in harsh radiation environments because of its high radiation tolerance. Radiation effects on SiC devices are reviewed. Firstly, the Total Ionizing Dose (TID) effect in Metal-Oxide-Semiconductor (MOS) Field Effect Transistors (FETs) is introduced. Then, the radiation hardness of SiC based transistors such as MOSFETs, Metal-Semiconductor (MES) FETs, Static Induction Transistors (SITs) is discussed from the point of view of 
-ray irradiation effects. Transient current induced in SiC pn diodes by heavy ions incidence, which is important information on the single event effects (SEEs), is also expressed.
Onoda, Shinobu; Makino, Takahiro; Ono, Shuichi*; Katakami, Shuji*; Arai, Manabu*; Oshima, Takeshi
IEEE Transactions on Nuclear Science, 59(4), p.742 - 748, 2012/08
Times Cited Count：4 Percentile：31.8(Engineering, Electrical & Electronic)no abstracts in English
Oshima, Takeshi; Onoda, Shinobu; Tanaka, Yasunori*; Arai, Manabu*
Isotope News, (686), p.8 - 12, 2011/06
no abstracts in English
collisions at 
= 200 and 62.4 GeVAdare, A.*; Afanasiev, S.*; Aidala, C.*; Ajitanand, N. N.*; Akiba, Yasuyuki*; Al-Bataineh, H.*; Alexander, J.*; Aoki, Kazuya*; Aphecetche, L.*; Armendariz, R.*; et al.
Physical Review C, 83(6), p.064903_1 - 064903_29, 2011/06
Times Cited Count：184 Percentile：99.45(Physics, Nuclear)Transverse momentum distributions and yields for 
, and 
in collisions at = 200 and 62.4 GeV at midrapidity are measured by the PHENIX experiment at the RHIC. We present the inverse slope parameter, mean transverse momentum, and yield per unit rapidity at each energy, and compare them to other measurements at different collisions. We also present the scaling properties such as 
and 
scaling and discuss the mechanism of the particle production in collisions. The measured spectra are compared to next-to-leading order perturbative QCD calculations.
and Au+Au collisions at 
= 200 GeVAdare, A.*; Afanasiev, S.*; Aidala, C.*; Ajitanand, N. N.*; Akiba, Yasuyuki*; Al-Bataineh, H.*; Alexander, J.*; Aoki, Kazuya*; Aphecetche, L.*; Aramaki, Y.*; et al.
Physical Review C, 83(4), p.044912_1 - 044912_16, 2011/04
Times Cited Count：9 Percentile：49.6(Physics, Nuclear)Measurements of electrons from the decay of open-heavy-flavor mesons have shown that the yields are suppressed in Au+Au collisions compared to expectations from binary-scaled collisions. Here we extend these studies to two particle correlations where one particle is an electron from the decay of a heavy flavor meson and the other is a charged hadron from either the decay of the heavy meson or from jet fragmentation. These measurements provide more detailed information about the interaction between heavy quarks and the quark-gluon matter. We find the away-side-jet shape and yield to be modified in Au+Au collisions compared to collisions.
Onoda, Shinobu; Iwamoto, Naoya; Ono, Shuichi*; Katakami, Shuji*; Arai, Manabu*; Kawano, Katsuyasu*; Oshima, Takeshi
IEEE Transactions on Nuclear Science, 56(6), p.3218 - 3222, 2009/12
Times Cited Count：18 Percentile：74.57(Engineering, Electrical & Electronic)no abstracts in English
; Arai, Takashi; Kaminaga, Atsushi; *; ; *; Kawabe, M.*; Yamamoto, Masahiro;
Koenerugi Butsurigaku Kenkyusho Gijutsu Kenkyu Hokoku, p.1 - 4, 1989/00
no abstracts in English
Oyama, Hidenori*; Hayama, Kiyoteru*; Takakura, Kenichiro*; Hirao, Toshio; Onoda, Shinobu; Oshima, Takeshi; Kuboyama, Satoshi*; Arai, Manabu*
no journal, ,
no abstracts in English
-ray irradiation effects on the I-V characteristics of 4H-SiC MESFETOnoda, Shinobu; Iwamoto, Naoya; Ono, Shuichi*; Katakami, Shuji*; Arai, Manabu*; Kawano, Katsuyasu*; Oshima, Takeshi
no journal, ,
no abstracts in English
He neutron spin filterOku, Takayuki; Hayashida, Hirotoshi; Sakai, Kenji; Shinohara, Takenao; Nakamura, Mitsutaka; Aizawa, Kazuya; Arai, Masatoshi; Endo, Yasuo; Kakurai, Kazuhisa; Kira, Hiroshi*; et al.
no journal, ,
We have been developing an in-situ SEOP He neutron spin filter to apply it to pulsed neutron experiments at J-PARC/MLF. To introduce the He neutron spin filter into the instruments of the pulsed neutron facility such as J-PARC/MLF, it is important to make the system compact and stable, because the system is located inside thick and bulky radiation shields for high energy ray and neutrons. In this study, we have developed a compact laser optics with a volume holographic grating (VHG) element, and composed an in-situ SEOP He neutron spin filter. We have started to apply the He spin filer as an analyzer to polarized neutron small angle scattering and reflection measurements. A magnetic field imaging are also being tested with the two He neutron spin filter cells which are polarized by the ex-situ SEOP technique. In this paper, we report the design of our SEOP He neutron spin filter system and some results of the related polarized neutron beam experiments.
He spin filter at J-PARC/MLFSakai, Kenji; Oku, Takayuki; Hayashida, Hirotoshi; Kira, Hiroshi*; Okawara, Manabu*; Shinohara, Takenao; Oikawa, Kenichi; Harada, Masahide; Kakurai, Kazuhisa; Aizawa, Kazuya; et al.
no journal, ,
A polarized He spin filter, which polarizes neutrons due to a large neutron absorption cross section of He with strong spin selectivity, works as a simple and convenient neutron spin polarizer. For realizing this filter, a device which monitors a polarization of He spin filter is indispensable. We developed the He polarization monitor based on a nuclear magnetic resonance method by an adiabatic fast passage (AFP NMR) at the MLF of J-PARC. The monitor based on the AFP NMR realizes the polarized He spin flipper functioning as the neutron spin polarizer and flipper. However it has disadvantages on the size of He cell limited by a RF coil and its complicated device structure. So we have developed the monitor based on a pulse NMR which uses only a pick up coil and enables the simple device structure of its own, and realized the more flexible monitor system by utilizing the both of pulse NMR and AFP NMR.
He neutron spin filter for high magnetic field sample environment accessories at J-PARCKira, Hiroshi*; Hayashida, Hirotoshi*; Oku, Takayuki; Sakai, Kenji; Hiroi, Kosuke; Ino, Takashi*; Oyama, Kenji*; Okawara, Manabu*; Kakurai, Kazuhisa; Suzuki, Junichi*; et al.
no journal, ,
He nuclear spin flip system for the in-situ SEOP He filterHayashida, Hirotoshi*; Kira, Hiroshi*; Suzuki, Junichi*; Oku, Takayuki; Sakai, Kenji; Hiroi, Kosuke; Shinohara, Takenao; Kakurai, Kazuhisa; Aizawa, Kazuya; Arai, Masatoshi; et al.
no journal, ,
no abstracts in English
He neutron spin filterOku, Takayuki; Sakai, Kenji; Hiroi, Kosuke; Shinohara, Takenao; Aizawa, Kazuya; Arai, Masatoshi; Kakurai, Kazuhisa; Hayashida, Hirotoshi*; Kira, Hiroshi*; Suzuki, Junichi*; et al.
no journal, ,
no abstracts in English
