First Injection of Spallation Neutrons Generated by High-Energy Protons into the Kyoto University Critical Assembly

被引：57

作者：

Pyeon, Cheol Ho ^{[1
]}

Misawa, Tsuyoshi ^{[1
]}

Lim, Jae-Yong ^{[1
]}

Unesaki, Hironobu ^{[1
]}

Ishi, Yoshihiro ^{[1
]}

Kuriyama, Yasutoshi ^{[1
]}

Uesugi, Tomonori ^{[1
]}

Mori, Yoshiharu ^{[1
]}

Inoue, Makoto ^{[1
]}

Nakajima, Ken ^{[1
]}

Mishima, Kaichiro ^{[1
]}

Shiroya, Seiji ^{[1
]}

机构：

[1] Kyoto Univ, Inst Res Reactor, Nucl Engn Sci Div, Kumatori, Osaka 5900494, Japan

来源：

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY | 2009年 / 46卷 / 12期

关键词：

ADS; KUCA; FFAG accelerator; spallation neutrons; proton beam injection; tungsten target; 100MeV protons; neutron multiplication; external source; sustainable nuclear chain reaction; subcritical system; SYSTEM;

D O I：

10.3327/jnst.46.1091

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

A series of accelerator-driven system (ADS) experiments were carried out by supplying spallation neutrons to a subcritical core through the injection of 100MeV protons onto a tungsten target of 80mm diameter and 10mm thickness. The proton beams from the fixed field alternating gradient (FFAG) accelerator were generated at 30 Hz repetition rate and 10 pA current. Neutron detectors were set at three positions to obtain the information on the detector position dependence of the prompt neutron decay measurement. The prompt and delayed neutron behaviors, which were an exponential decay behavior and a slowly decreasing behavior, respectively, were experimentally confirmed by observing the time evolution of neutron density in ADS. The results show that subcriticality was deduced from the prompt neutron decay constant by the extrapolated area ratio method. The calculated reaction rate distribution approximately agreed with the experimental results within the statistical errors in the experiments.

引用

页码：1091 / 1093

页数：3

共 7 条

[1] ENDF/B-VII.0: Next generation evaluated nuclear data library for nuclear science and technology [J].

Chadwick, M. B. ;

Oblozinsky, P. ;

Herman, M. ;

Greene, N. M. ;

McKnight, R. D. ;

Smith, D. L. ;

Young, P. G. ;

MacFarlane, R. E. ;

Hale, G. M. ;

Frankle, S. C. ;

Kahler, A. C. ;

Kawano, T. ;

Little, R. C. ;

Madland, D. G. ;

Moller, P. ;

Mosteller, R. D. ;

Page, P. R. ;

Talou, P. ;

Trellue, H. ;

White, M. C. ;

Wilson, W. B. ;

Arcilla, R. ;

Dunford, C. L. ;

Mughabghab, S. F. ;

Pritychenko, B. ;

Rochman, D. ;

Sonzogni, A. A. ;

Lubitz, C. R. ;

Trumbull, T. H. ;

Weinman, J. P. ;

Brown, D. A. ;

Cullen, D. E. ;

Heinrichs, D. P. ;

McNabb, D. P. ;

Derrien, H. ;

Dunn, M. E. ;

Larson, N. M. ;

Leal, L. C. ;

Carlson, A. D. ;

Block, R. C. ;

Briggs, J. B. ;

Cheng, E. T. ;

Huria, H. C. ;

Zerkle, M. L. ;

Kozier, K. S. ;

Courcelle, A. ;

Pronyaev, V. ;

van der Marck, S. C. .

NUCLEAR DATA SHEETS, 2006, 107 (12) :2931-3059

[2] Development of FFAG accelerators and their applications for intense secondary particle production [J].

Mori, Y .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2006, 562 (02) :591-595

[3]

PYEON CH, 2009, J NUCL SCI IN PRESS

[4] Preliminary experiments on accelerator-driven subcritical reactor with pulsed neutron generator in Kyoto University Critical Assembly [J].

Pyeon, Cheol Ho ;

Hirano, Yoshiyuki ;

Misawa, Tsuyoshi ;

Unesaki, Hironobu ;

Ichihara, Chihiro ;

Iwasaki, Tomohiko ;

Shiroya, Seiji .

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, 2007, 44 (11) :1368-1378

[5] Static and Kinetic Experiments on Accelerator-Driven System with 14MeV Neutrons in Kyoto University Critical Assembly [J].

Pyeon, Cheol Ho ;

Hervault, Morgan ;

Misawa, Tsuyoshi ;

Unesaki, Hironobu ;

Iwasaki, Tomohiko ;

Shiroya, Seiji .

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, 2008, 45 (11) :1171-1182

[6]

Waters L. S., 2002, LACP02408 LOS AL NAT

[7] Development of RF acceleration system for 150 MeV FFAG accelerator [J].

Yonemura, Y. ;

Takagi, A. ;

Yoshii, M. ;

Mori, Y. ;

Aiba, M. ;

Okabe, K. ;

Ikeda, N. .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2007, 576 (2-3) :294-300

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