Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex, 2; Neutron scattering instruments

Nakajima, Kenji; Kawakita, Yukinobu; Ito, Shinichi*; Abe, Jun*; Aizawa, Kazuya; Aoki, Hiroyuki; Endo, Hitoshi*; Fujita, Masaki*; Funakoshi, Kenichi*; Gong, W.*; et al.

Quantum Beam Science (Internet), 1(3), p.9_1 - 9_59, 2017/12

https://doi.org/10.3390/qubs1030009

The neutron instruments suite, installed at the spallation neutron source of the Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC), is reviewed. MLF has 23 neutron beam ports and 21 instruments are in operation for user programs or are under commissioning. A unique and challenging instrumental suite in MLF has been realized via combination of a high-performance neutron source, optimized for neutron scattering, and unique instruments using cutting-edge technologies. All instruments are/will serve in world-leading investigations in a broad range of fields, from fundamental physics to industrial applications. In this review, overviews, characteristic features, and typical applications of the individual instruments are mentioned.

Decrease of charge collection due to displacement damage by rays in a 6H-SiC diode

Onoda, Shinobu; Oshima, Takeshi; Hirao, Toshio; Mishima, Kenta; Hishiki, Shigeomi; Iwamoto, Naoya; Kojima, Kazutoshi*; Kawano, Katsuyasu*

IEEE Transactions on Nuclear Science, 54(6), p.1953 - 1960, 2007/12

https://doi.org/10.1109/TNS.2007.910203

Heavy-ion induced current through an oxide layer

Takahashi, Yoshihiro*; Oki, Takahiro*; Nagasawa, Takaharu*; Nakajima, Yasuhito*; Kawanabe, Ryu*; Onishi, Kazunori*; Hirao, Toshio; Onoda, Shinobu; Mishima, Kenta; Kawano, Katsuyasu*; et al.

Nuclear Instruments and Methods in Physics Research B, 260(1), p.309 - 313, 2007/07

https://doi.org/10.1016/j.nimb.2007.02.010

no abstracts in English

Analysis of transient current in SiC diodes irradiated with MeV ions

Onoda, Shinobu; Oshima, Takeshi; Hirao, Toshio; Hishiki, Shigeomi; Mishima, Kenta; Iwamoto, Naoya; Kamiya, Tomihiro; Kawano, Katsuyasu*

Proceedings of 7th International Workshop on Radiation Effects on Semiconductor Devices for Space Application (RASEDA-7), p.115 - 118, 2006/10

no abstracts in English

Elucidation of the transportation of charge induced in semiconductors by heavy-ion incidence

Mishima, Kenta; Hirao, Toshio; Onoda, Shinobu; Abe, Hiroshi; Ito, Hisayoshi; Kawano, Katsuyasu*

no journal, , 

no abstracts in English

TIBIC measurement of 6H-SiC pn diodes irradiated with oxygen and nickel ions

Iwamoto, Naoya; Onoda, Shinobu; Hishiki, Shigeomi; Mishima, Kenta; Oshima, Takeshi; Sato, Takahiro; Oikawa, Masakazu*; Kamiya, Tomihiro; Sakamoto, Airi*; Nakano, Itsuo*; et al.

no journal, , 

Transient currents induced in 6H-SiC np by Ni and O ions were evaluated using Transient Ion Beam Induced Current (TIBIC). Charge Collection Efficiency (CCE) was estimated from TIBIC signals. As a results, CCE for 9 MeV-Ni and 9 MeV-O-irradiated 6H-SiC np diodes are 75 and 90 % respectively. From a simulation of ion tracks in which charge distribution and Auger recombination are considered, the origin of the decrease in CCE is explained in terms of the recombination of electron-hole pairs by Auger recombination in high ion beam induced carrier concentration.

Development of a software platform for providing environmental monitoring data for the Fukushima Daiichi nuclear accident

Seki, Akiyuki; Saito, Osamu; Nago, Harutaka*; Suzuki, Kenta; Tomishima, Katsuya; Saito, Kimiaki; Takemiya, Hiroshi

no journal, , 

In nuclear emergencies, it is especially important to carry out environmental monitoring over a wide range and provide the data immediately so as to understand the current distribution of radionuclides and investigate countermeasures. Therefore, it is indispensable for a nuclear emergency response to establish a system that supports rapid provision of these data. We have been developing the software platform by integrating technologies of environmental monitoring, information processing, and network communication, based on the experience of the Fukushima Daiichi Nuclear Accident.