【摘 要】
：
Nuclear data are the cornerstones of reactor physics and shielding calculations.Recently,China released CENDL-3.2 in 2020,and the US released ENDF/B-Ⅷ.0 in 2018.Therefore,it is necessary to compre-hensively evaluate the criticality computing performance o
【机 构】
：
School of Nuclear Science and Engineering,North China Electric Power University,Beijing 102206,China
论文部分内容阅读
Nuclear data are the cornerstones of reactor physics and shielding calculations.Recently,China released CENDL-3.2 in 2020,and the US released ENDF/B-Ⅷ.0 in 2018.Therefore,it is necessary to compre-hensively evaluate the criticality computing performance of these newly released evaluated nuclear libraries.In this study,we used the NJOY2016 code to generate ACE for-mat libraries based on the latest neutron data libraries(including CENDL-3.2,JEFF3.3,ENDF/B-IⅧ.0,and JENDL4.0).The MCNP code was used to conduct a detailed analysis of fission nuclides,including 235U,233U,and 239pu,in different evaluated nuclear data libraries based on 100 benchmarks.The criticality calculation per-formance of each library was evaluated using three statis-tical parameters:δk/σ,x2,and .Analysis of the δk/σ parameter showed that CENDL-3.1 and JENDL-4.0 both had ＞ 10 benchmarks that exceeded 3σr,whereas CENDL-3.2,ENDFB-Ⅷ.0,and JEFF-3.3 had,7,5,and 4 bench-marks,respectively,exceeding 3σ.The ENDF/B-Ⅶ.1 library performed best,with only two benchmarks exceeding 3σ.Compared to CENDL-3.1,CENDL-3.2 offers an improvement in criticality calculations.Com-pared to the JEFF-3.3 and ENDF/B-Ⅷ.0 libraries,CENDL3.2 performs better in the calculation of the 233U assemblies,but it performs poorly in the pusl11 series case calculation of the 239pu assemblies,and thus further improvement is needed.
其他文献
We describe a method of optical flow extraction for high-speed high-brightness targets based on a pulse array image sensor (PAIS). PAIS is a retina-like image sensor with pixels triggered by light; it can convert light into a series of pulse intervals. Th
There are two famous function decomposition methods in math: the Taylor series and the Fourier series. The Fourier series developed into the Fourier spectrum, which was applied to signal decomposition and analysis. However, because the Taylor series funct
Identifying factors that exert more influence on system output from data is one of the most challenging tasks in science and engineering. In this work, a sensitivity analysis of the generalized Gaussian process regression (SA-GGPR) model is proposed to id
Edge artificial intelligence will empower the ever simple industrial wireless networks (IWNs) supporting complex and dynamic tasks by collaboratively exploiting the computation and communication resources of both machine-type devices (MTDs) and edge serve
The input/output (I/O) pins of an industry-level fluorescent optical fiber temperature sensor readout circuit need on-chip integrated high-performance electro-static discharge (ESD) protection devices. It is difficult for the failure level of basic N-type
RSA and ellipse curve cryptography (ECC) algorithms are widely used in authentication, data security, and access control. In this paper, we analyze the basic operation of the ECC and RSA algorithms and optimize their modular multiplication and modular inv
Doped elements in alloys significantly impact their performance.Conventional methods usually sputter the surface material of the sample,or their performance is limited to the surface of alloys owing to their poor pene-tration ability.The X-ray K-edge subt
Intelligent radio access networks (RANs) have been seen as a promising paradigm aiming to better satisfy diverse application demands and support various service scenarios. In this paper, a comprehensive survey of recent advances in intelligent RANs is con
Precise measurements of the cavity forward (Vf)and reflected signals (Vr) are essential for characterizing other key parameters such as the cavity detuning and for-ward power.In practice,it is challenging to measure Vf and Vr precisely because of cross ta
Collinear laser spectroscopy is a powerful tool for studying the nuclear spins,electromagnetic moments,and charge radii of exotic nuclei.To study the nuclear properties of unstable nuclei at the Beijing Radioactive Ion-beam Facility (BRIF) and the future