کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5474993 | 1521086 | 2017 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Application of the CAB evaluation of thermal scattering law for heavy water to ZED-2 critical benchmarks at room temperature
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Application of the CAB evaluation of thermal scattering law for heavy water to ZED-2 critical benchmarks at room temperature Application of the CAB evaluation of thermal scattering law for heavy water to ZED-2 critical benchmarks at room temperature](/preview/png/5474993.png)
چکیده انگلیسی
In this work, we provide additional details on the CAB evaluation of heavy water at room temperature and discuss the important integral characteristics of neutron scattering kernels, such as the cross sections, average scattering cosine, and average secondary energy. Then, the new set of thermal scattering kernels is applied in modelling criticality of the ZED-2 reactor, and the international benchmarks LEU-MET-THERM-003 (ICSBEP handbook) and ZED2-HWR-EXP-001 (IRPhEP handbook) are analyzed in detail. The differences in the estimates of criticality due to changes in the S(α,β) data from the reference one (ENDF/B-VII) to the CAB evaluation are 100-200 pcm; they are comparable but smaller than the ZED-2 benchmark uncertainties (â±300 pcm). Changing the reference evaluation of 16O to the recently developed one from the CIELO project (WPEC subgroup 40) results in a decrease of criticality by â¼100 pcm. Using different combinations of the improved nuclear data for deuterium, oxygen, and the CAB TSL model, we obtain biases up to 300-400 pcm in the estimates of criticality of the selected ZED-2 benchmarks. Application of the new evaluations for 235U and 238U from the CIELO project improves the estimates of keff by decreasing the bias by â¼100 pcm that indicates a need for further investigations of the ZED-2 critical assemblies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Nuclear Energy - Volume 110, December 2017, Pages 958-972
Journal: Annals of Nuclear Energy - Volume 110, December 2017, Pages 958-972
نویسندگان
D. Roubtsov, J.C. Chow, J.I. Márquez Damián, J.R. Granada,