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Tuya, D.; Nagaya, Yasunobu
Nuclear Science and Engineering, 15 Pages, 2023/00
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)In Monte Carlo neutron transport calculations for local response or deep penetration problems, some estimation of an importance function is generally required in order to improve their efficiency. In this work, a new recursive Monte Carlo (RMC) method, which is partly based on the original RMC method, for estimating an importance function for local variance reduction (i.e., source-detector type) problems has been developed. The new RMC method has been applied to two sample problems of varying degrees of neutron penetrations, namely a one-dimensional iron slab problem and a three-dimensional concrete-air problem. The biased Monte Carlo calculations with variance reduction parameters based on the obtained importance functions by the new RMC method have been performed to estimate detector responses in these problems. The obtained results are in agreement with those by the reference unbiased Monte Carlo calculations. Furthermore, the biased calculations offered an increase in efficiency on the order of 1 to 10
in terms of the figure of merit (FOM). The results also indicated that the efficiency increased as the neutron penetration became deeper.
Hashimoto, Shintaro; Sato, Tatsuhiko
Journal of Nuclear Science and Technology, 56(4), p.345 - 354, 2019/04
Times Cited Count：5 Percentile：48.99(Nuclear Science & Technology)Particle transport simulations based on the Monte Carlo method have been applied to shielding calculations. Estimation of not only statistical uncertainty related to the number of trials but also systematic one induced by unclear physical quantities is required to confirm the reliability of calculated results. In this study, we applied a method based on analysis of variance to shielding calculations. We proposed random- and three-condition methods. The first one determines randomly the value of the unclear quantity, while the second one uses only three values: the default value, upper and lower limits. The systematic uncertainty can be estimated adequately by the random-condition method, though it needs the large computational cost. The three-condition method can provide almost the same estimate as the random-condition method when the effect of the variation is monotonic. We found criterion to confirm convergence of the systematic uncertainty as the number of trials increases.
Advanced Radiation Technology Center
JAERI-Review 2004-025, 374 Pages, 2004/11
JAERI-Review-2004-025-p0001-p0116.pdf:20.67MBJAERI-Review-2004-025-p0117-p0247.pdf:21.34MBJAERI-Review-2004-025-p0248-p0374.pdf:23.39MB
This annual report describes research and development activities which have been performed with the JAERI TIARA (Takasaki Ion Accelerators for Advanced Radiation Application) facilities from April 1, 2003 to March 31, 2004. Summary reports of 115 papers and brief descriptions on the status of TIARA in the period are contained. A list of publications, the type of research collaborations and organization of TIARA are also given as appendices.
-ray dose rates around the duct penetration by three-dimensional Monte Carlo decay -ray transport calculation with variance reduction methodSato, Satoshi; Iida, Hiromasa; Nishitani, Takeo
Journal of Nuclear Science and Technology, 39(11), p.1237 - 1246, 2002/11
Times Cited Count：27 Percentile：83.24(Nuclear Science & Technology)no abstracts in English
Committee for the Joint Research Project on the Advanced Radiation Technology; Committee for the Collaborative Research on the Advanced Radiation Technology
JAERI-Conf 2000-008, 113 Pages, 2000/06
JAERI-Conf-2000-008.pdf:11.5MB
no abstracts in English
Iwashita, Mitsushige*; Arigane, Kenji; Kishimoto, Katsumi; Seiki, Y.*; Fukumura, Nobuo*; Mio, K.*
Journal of Nuclear Science and Technology, 37(Suppl.1), p.372 - 378, 2000/03
no abstracts in English
Asano, Yoshihiro; Sasamoto, Nobuo
Radiation Protection Dosimetry, 82(3), p.167 - 174, 1999/00
Times Cited Count：9 Percentile：57.23(Environmental Sciences)no abstracts in English
Furuya, Kazuyuki; Sato, Satoshi; Hatano, Toshihisa; *; Kitamura, Kazunori*; Miura, H.*; *; Kuroda, Toshimasa*; Takatsu, Hideyuki
JAERI-Tech 97-022, 113 Pages, 1997/05
no abstracts in English
Sato, Satoshi; Takatsu, Hideyuki; *; Seki, Yasushi
J. Fusion Eng. Des., 30(3), p.1076 - 1080, 1996/12
no abstracts in English
JAERI-Tech 96-001, 135 Pages, 1996/01
no abstracts in English
Murata, Isao; Shindo, Ryuichi; Shiozawa, Shusaku
Journal of Nuclear Science and Technology, 32(10), p.971 - 980, 1995/10
Times Cited Count：2 Percentile：28.12(Nuclear Science & Technology)no abstracts in English
Furuya, Kazuyuki; Hashimoto, T.*; Sato, Satoshi; Kuroda, Toshimasa*; *; Kurasawa, Toshimasa; *; Takatsu, Hideyuki
JAERI-Tech 95-045, 53 Pages, 1995/09
no abstracts in English
JAERI-Tech 94-036, 226 Pages, 1994/12
no abstracts in English
Konno, Chikara; Maekawa, Fujio; *; Kosako, Kazuaki*; Ikeda, Yujiro; Oyama, Yukio; Maekawa, Hiroshi
JAERI-Tech 94-019, 43 Pages, 1994/10
no abstracts in English
Shindo, Ryuichi; Murata, Isao; Sawa, Kazuhiro; Shiozawa, Shusaku; *; Mori, Tomoaki*
Proc. of the 8th Int. Conf. on Radiation Shielding, p.351 - 358, 1994/00
no abstracts in English
Murata, Isao; Shindo, Ryuichi; Shiozawa, Shusaku
Proc. of the 8th Int. Conf. on Radiation Shielding, p.365 - 370, 1994/00
no abstracts in English
P.I.Yazid*;
Journal of Nuclear Science and Technology, 30(12), p.1299 - 1302, 1993/12
Times Cited Count：0 Percentile：0.49(Nuclear Science & Technology)no abstracts in English
; Sakamoto, Yukio
Journal of Nuclear Science and Technology, 30(9), p.926 - 945, 1993/09
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)no abstracts in English
Masukawa, Fumihiro; ; Inoue, Osamu*; Hara, Toshiharu*
JAERI-M 93-024, 31 Pages, 1993/02
no abstracts in English
*; ; Masukawa, Fumihiro; Naito, Yoshitaka; Minami, Kazuyoshi*
JAERI-M 91-066, 77 Pages, 1991/04
no abstracts in English
