Design of a compact electron accelerator-driven pulsed neutron facility at AIST

被引:13
作者
Kino, Koichi [1 ,2 ]
Fujiwara, Takeshi [1 ,2 ]
Furusaka, Michihiro [1 ,2 ]
Hayashizaki, Noriyosu [1 ,2 ,3 ]
Kuroda, Ryunosuke [1 ,2 ]
Michishio, Koji [1 ,2 ]
Muroga, Takemi [2 ]
Ogawa, Hiroshi [1 ,2 ]
O'Rourke, Brain E. [1 ,2 ]
Oshima, Nagayasu [1 ,2 ]
Satoh, Daisuke [1 ,2 ]
Sei, Norihiro [1 ,2 ]
Shishido, Tamao [2 ]
Suzuki, Ryoichi [1 ,2 ]
Tanaka, Masahito [1 ,2 ]
Toyokawa, Hiroyuki [1 ,2 ]
Watazu, Akira [1 ,2 ]
机构
[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki, Japan
[2] ISMA, Chiyoda Ku, Tokyo, Japan
[3] Tokyo Inst Technol, Meguro Ku, Tokyo, Japan
关键词
Pulsed neutron beam; Compact neutron source; Neutron imaging; Bragg edge; CODE; DIFFRACTION; DETECTOR;
D O I
10.1016/j.nima.2019.02.062
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
We have designed and been constructing a compact accelerator-driven neutron facility for Bragg edge transmission imaging of structural materials to obtain position dependent crystallographic information. In order to combine a high neutron wavelength resolution, which is especially required for strain measurements, and an intense neutron beam flux at the sample position, which is required for obtaining high quality statistics within practical measurement times, the components of the neutron facility are optimized. To achieve a high wavelength resolution while maintaining an intense neutron beam flux at the sample position, a solid methane decoupled cold moderator at about 20 K coupled with neutron guide tubes is employed. The target-moderator system, especially the moderator thickness was optimized using the Monte-Carlo simulation code PHITS. Neutrons will be produced using a 35-MeV electron accelerator which is currently under construction. The accelerator has a design maximum beam power of 10 kW, a maximum repetition rate of 100 Hz and a maximum pulse width of 10 mu s. The combination of the flight path length of about 8 m and the repetition rate is suitable for efficient Bragg edge measurements. The pulse width of the electron beam is suitable to achieve a high wavelength resolution with the solid methane decoupled moderator. The estimated flux of the neutron beam at the sample position is 1.2x10(4) similar to 4.5x10(4) /cm(2)/s depending on the usage of super mirror guide tubes. The wavelength resolution at the sample is 0.5 similar to 0.7% in the wavelength region from 0.3 to 0.4 nm.
引用
收藏
页码:407 / 418
页数:12
相关论文
共 23 条
[1]   Research opportunities with compact accelerator-driven neutron sources [J].
Anderson, I. S. ;
Andreani, C. ;
Carpenter, J. M. ;
Festa, G. ;
Gorini, G. ;
Loong, C-K. ;
Senesi, R. .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2016, 654 :1-58
[2]   The performance of Glass GEM [J].
Fujiwara, T. ;
Mitsuya, Y. ;
Takahashi, H. ;
Fushie, T. ;
Kishimito, S. ;
Guerard, B. ;
Uesaka, M. .
JOURNAL OF INSTRUMENTATION, 2014, 9
[3]   Microstructured boron foil scintillating G-GEM detector for neutron imaging [J].
Fujiwara, Takeshi ;
Bautista, Unico ;
Mitsuya, Yuki ;
Takahashi, Hiroyuki ;
Yamada, Norifumi L. ;
Otake, Yoshie ;
Taketani, Atsushi ;
Uesaka, Mitsuru ;
Toyokawa, Hiroyuki .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2016, 838 :124-128
[4]  
Iga T., P IPAC 10
[5]   Prospect for application of compact accelerator-based neutron source to neutron engineering diffraction [J].
Ikeda, Yoshimasa ;
Taketani, Atsushi ;
Takamura, Masato ;
Sunaga, Hideyuki ;
Kumagai, Masayoshi ;
Oba, Yojiro ;
Otake, Yoshie ;
Suzuki, Hiroshi .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2016, 833 :61-67
[6]   Intermediate-angle Neutron Scattering Instrument for Quantitative and Non-destructive Characterization of Nanostructures in Steels and Other Alloys [J].
Ishida, Toshinori ;
Ohnuma, Masato ;
Seong, Baek Seok ;
Furusaka, Michihiro .
ISIJ INTERNATIONAL, 2017, 57 (10) :1831-1837
[7]   Experimental studies on neutronic performance of various cold-neutron moderators for the pulsed neutron sources00 [J].
Kiyanagi, Y .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2006, 562 (02) :561-564
[8]   EFFECTS OF REFLECTOR ON INTENSITY OF THERMAL-NEUTRONS EMITTED FROM MODERATOR FOR PULSED NEUTRON SOURCE [J].
KIYANAGI, Y .
JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, 1987, 24 (06) :490-497
[9]   A new imaging method using pulsed neutron sources for visualizing structural and dynamical information [J].
Kiyanagi, Y. ;
Sato, H. ;
Kamiyama, T. ;
Shinohara, T. .
5TH EUROPEAN CONFERENCE ON NEUTRON SCATTERING, 2012, 340
[10]   Design study of the imaging beam line at J-PARC MLF, ERNIS [J].
Kiyanagi, Y. ;
Kamiyama, T. ;
Sato, H. ;
Shinohara, T. ;
Kai, T. ;
Aizawa, K. ;
Arai, M. ;
Harada, M. ;
Sakai, K. ;
Oikawa, K. ;
Ohi, M. ;
Maekawa, F. ;
Sakai, T. ;
Matsubayashi, M. ;
Segawa, M. ;
Kureta, M. .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2011, 651 (01) :16-20