Benchmark tests of newly-evaluated data of 235U for Cielo project using integral experiments of uranium-fueled FCA assemblies

Masahiro Fukushima; Yasunori Kitamura; Kenji Yokoyama; Osamu Iwamoto; Yasunobu Nagaya; Luiz C. Leal

Benchmark tests of newly-evaluated data of ²³⁵U for Cielo project using integral experiments of uranium-fueled FCA assemblies

Masahiro Fukushima, Yasunori Kitamura, Kenji Yokoyama, Osamu Iwamoto, Yasunobu Nagaya, Luiz C. Leal

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

A nuclear data file of ²³⁵U has been recently evaluated for the Collaborative International Evaluated Library Organization (CIELO) project. In the file, improved resonance parameters of ²³⁵U in the energy range up to 2.25 keV were prepared by L. Leal at ORNL, which were combined with a new evaluation of the cross sections above the unresolved resonance range by P. Romain et al. at Bruyeres-le-Chatel. We tested the newly-evaluated data of ²³⁵U using integral experiments of the Fast Critical Assembly (FCA) performed at the Japan Atomic Energy Agency (JAEA). We selected two integral data of uranium-fueled FCA assemblies; one is the sodium-void reactivity worth of FCA XXVII-1 assembly, which is sensitive to the ²³⁵U capture cross section around the keV region, and the other is the criticalities of the seven assemblies of FCA IX, whose sensitivities to the ²³⁵U cross sections are systematically changed from the intermediate to the fast energy regions. The benchmark tests support the newly-evaluated resonance parameters. However, the ²³⁵U capture cross section above the unresolved resonance range needs further investigations together with other data, the fission neutron yield, fission spectrum and inelastic cross section, re-evaluated in the new file of ²³⁵U.

Original language	English
Title of host publication	Physics of Reactors 2016, PHYSOR 2016
Subtitle of host publication	Unifying Theory and Experiments in the 21st Century
Publisher	American Nuclear Society
Pages	605-619
Number of pages	15
ISBN (Electronic)	9781510825734
State	Published - 2016
Externally published	Yes
Event	Physics of Reactors 2016: Unifying Theory and Experiments in the 21st Century, PHYSOR 2016 - Sun Valley, United States Duration: May 1 2016 → May 5 2016

Publication series

Name	Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century
Volume	1

Conference

Conference	Physics of Reactors 2016: Unifying Theory and Experiments in the 21st Century, PHYSOR 2016
Country/Territory	United States
City	Sun Valley
Period	05/1/16 → 05/5/16

Keywords

U cross section
Benchmark tests
CIELO
FCA
Integral experiments

Cite this

Fukushima, M., Kitamura, Y., Yokoyama, K., Iwamoto, O., Nagaya, Y., & Leal, L. C. (2016). Benchmark tests of newly-evaluated data of ²³⁵U for Cielo project using integral experiments of uranium-fueled FCA assemblies. In Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century (pp. 605-619). (Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century; Vol. 1). American Nuclear Society.

Fukushima, Masahiro ; Kitamura, Yasunori ; Yokoyama, Kenji et al. / Benchmark tests of newly-evaluated data of ²³⁵U for Cielo project using integral experiments of uranium-fueled FCA assemblies. Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century. American Nuclear Society, 2016. pp. 605-619 (Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century).

@inproceedings{9f3fae6d907142ac84acddd329a591d6,

title = "Benchmark tests of newly-evaluated data of 235U for Cielo project using integral experiments of uranium-fueled FCA assemblies",

abstract = "A nuclear data file of 235U has been recently evaluated for the Collaborative International Evaluated Library Organization (CIELO) project. In the file, improved resonance parameters of 235U in the energy range up to 2.25 keV were prepared by L. Leal at ORNL, which were combined with a new evaluation of the cross sections above the unresolved resonance range by P. Romain et al. at Bruyeres-le-Chatel. We tested the newly-evaluated data of 235U using integral experiments of the Fast Critical Assembly (FCA) performed at the Japan Atomic Energy Agency (JAEA). We selected two integral data of uranium-fueled FCA assemblies; one is the sodium-void reactivity worth of FCA XXVII-1 assembly, which is sensitive to the 235U capture cross section around the keV region, and the other is the criticalities of the seven assemblies of FCA IX, whose sensitivities to the 235U cross sections are systematically changed from the intermediate to the fast energy regions. The benchmark tests support the newly-evaluated resonance parameters. However, the 235U capture cross section above the unresolved resonance range needs further investigations together with other data, the fission neutron yield, fission spectrum and inelastic cross section, re-evaluated in the new file of 235U.",

keywords = "U cross section, Benchmark tests, CIELO, FCA, Integral experiments",

author = "Masahiro Fukushima and Yasunori Kitamura and Kenji Yokoyama and Osamu Iwamoto and Yasunobu Nagaya and Leal, \{Luiz C.\}",

year = "2016",

language = "English",

series = "Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century",

publisher = "American Nuclear Society",

pages = "605--619",

booktitle = "Physics of Reactors 2016, PHYSOR 2016",

note = "Physics of Reactors 2016: Unifying Theory and Experiments in the 21st Century, PHYSOR 2016 ; Conference date: 01-05-2016 Through 05-05-2016",

}

Fukushima, M, Kitamura, Y, Yokoyama, K, Iwamoto, O, Nagaya, Y & Leal, LC 2016, Benchmark tests of newly-evaluated data of ²³⁵U for Cielo project using integral experiments of uranium-fueled FCA assemblies. in Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century. Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century, vol. 1, American Nuclear Society, pp. 605-619, Physics of Reactors 2016: Unifying Theory and Experiments in the 21st Century, PHYSOR 2016, Sun Valley, United States, 05/1/16.

Benchmark tests of newly-evaluated data of ²³⁵U for Cielo project using integral experiments of uranium-fueled FCA assemblies. / Fukushima, Masahiro; Kitamura, Yasunori; Yokoyama, Kenji et al.
Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century. American Nuclear Society, 2016. p. 605-619 (Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Benchmark tests of newly-evaluated data of 235U for Cielo project using integral experiments of uranium-fueled FCA assemblies

AU - Fukushima, Masahiro

AU - Kitamura, Yasunori

AU - Yokoyama, Kenji

AU - Iwamoto, Osamu

AU - Nagaya, Yasunobu

AU - Leal, Luiz C.

PY - 2016

Y1 - 2016

N2 - A nuclear data file of 235U has been recently evaluated for the Collaborative International Evaluated Library Organization (CIELO) project. In the file, improved resonance parameters of 235U in the energy range up to 2.25 keV were prepared by L. Leal at ORNL, which were combined with a new evaluation of the cross sections above the unresolved resonance range by P. Romain et al. at Bruyeres-le-Chatel. We tested the newly-evaluated data of 235U using integral experiments of the Fast Critical Assembly (FCA) performed at the Japan Atomic Energy Agency (JAEA). We selected two integral data of uranium-fueled FCA assemblies; one is the sodium-void reactivity worth of FCA XXVII-1 assembly, which is sensitive to the 235U capture cross section around the keV region, and the other is the criticalities of the seven assemblies of FCA IX, whose sensitivities to the 235U cross sections are systematically changed from the intermediate to the fast energy regions. The benchmark tests support the newly-evaluated resonance parameters. However, the 235U capture cross section above the unresolved resonance range needs further investigations together with other data, the fission neutron yield, fission spectrum and inelastic cross section, re-evaluated in the new file of 235U.

AB - A nuclear data file of 235U has been recently evaluated for the Collaborative International Evaluated Library Organization (CIELO) project. In the file, improved resonance parameters of 235U in the energy range up to 2.25 keV were prepared by L. Leal at ORNL, which were combined with a new evaluation of the cross sections above the unresolved resonance range by P. Romain et al. at Bruyeres-le-Chatel. We tested the newly-evaluated data of 235U using integral experiments of the Fast Critical Assembly (FCA) performed at the Japan Atomic Energy Agency (JAEA). We selected two integral data of uranium-fueled FCA assemblies; one is the sodium-void reactivity worth of FCA XXVII-1 assembly, which is sensitive to the 235U capture cross section around the keV region, and the other is the criticalities of the seven assemblies of FCA IX, whose sensitivities to the 235U cross sections are systematically changed from the intermediate to the fast energy regions. The benchmark tests support the newly-evaluated resonance parameters. However, the 235U capture cross section above the unresolved resonance range needs further investigations together with other data, the fission neutron yield, fission spectrum and inelastic cross section, re-evaluated in the new file of 235U.

KW - U cross section

KW - Benchmark tests

KW - CIELO

KW - FCA

KW - Integral experiments

UR - https://www.scopus.com/pages/publications/84992036547

M3 - Conference contribution

AN - SCOPUS:84992036547

T3 - Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century

SP - 605

EP - 619

BT - Physics of Reactors 2016, PHYSOR 2016

PB - American Nuclear Society

T2 - Physics of Reactors 2016: Unifying Theory and Experiments in the 21st Century, PHYSOR 2016

Y2 - 1 May 2016 through 5 May 2016

ER -

Fukushima M, Kitamura Y, Yokoyama K, Iwamoto O, Nagaya Y, Leal LC. Benchmark tests of newly-evaluated data of ²³⁵U for Cielo project using integral experiments of uranium-fueled FCA assemblies. In Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century. American Nuclear Society. 2016. p. 605-619. (Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century).