瑞士散裂中子源第七次辐照实验的中子模拟

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2025-08-05 DOI:10.1016/j.nimb.2025.165820

Wei Jiang , Wei Lu , Yong Dai

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引用次数: 0

摘要

SINQ靶辐射计划（STIP）是美国保罗·谢勒研究所（PSI）开展的重要研究项目之一。2013 - 2014年，SINQ靶辐照计划（STIP-VII）第七次实验以SINQ靶10为实验对象，靶接收的总质子电荷为11.7 Ah。采用MCNPX对放置在不同试样棒中的9Cr-1Mo钢、Zry-2、Al、SiC、Ta和W 6种材料进行了辐射损伤评估，预测了位移、氦和氢的关键辐射损伤产生。评估的入射质子源项是通过对质子束入口窗口进行伽马映射测量产生的。计算了质子和中子的影响以及SINQ靶10的能量沉积。在平均质子束电流为1.45 mA时，质子和中子的峰值通量分别为2.28 × 1014p/cm2/s和5.60 × 1014n/cm2/s。钢试样的最大辐照剂量和氦产量分别为26.5 dpa和2240 appm。

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Neutronic simulation of the seventh irradiation experiment at the Swiss spallation neutron source

The SINQ Target Irradiation Program (STIP) is one of the important research projects performed at the Paul Scherrer Institute (PSI). The seventh experiment of the SINQ Target Irradiation Program (STIP-VII) was conducted with SINQ Target 10 from 2013 to 2014 and the total proton charge received by the target was 11.7 Ah. A radiation damage assessment was performed using MCNPX to predict the key radiation damage productions of displacement, helium and hydrogen for six materials, 9Cr-1Mo steel, Zry-2, Al, SiC, Ta and W, placed in different specimen rods. The incident proton source term for the assessment was produced with a gamma mapping measurement performed on the proton beam entrance window. The fluences of protons and neutrons as well as the energy deposition in the SINQ Target 10 were calculated. At an average proton beam current of 1.45 mA, the peak proton and neutron fluxes are 2.28 × 10¹⁴p/cm²/s and 5.60 × 10¹⁴n/cm²/s, respectively. The maximum irradiation dose and helium productions for steel specimens are 26.5 dpa and 2240 appm, respectively.

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来源期刊

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms 物理-核科学技术

CiteScore

2.80

自引率

7.70%

发文量

231

审稿时长

1.9 months

期刊介绍： Section B of Nuclear Instruments and Methods in Physics Research covers all aspects of the interaction of energetic beams with atoms, molecules and aggregate forms of matter. This includes ion beam analysis and ion beam modification of materials as well as basic data of importance for these studies. Topics of general interest include: atomic collisions in solids, particle channelling, all aspects of collision cascades, the modification of materials by energetic beams, ion implantation, irradiation - induced changes in materials, the physics and chemistry of beam interactions and the analysis of materials by all forms of energetic radiation. Modification by ion, laser and electron beams for the study of electronic materials, metals, ceramics, insulators, polymers and other important and new materials systems are included. Related studies, such as the application of ion beam analysis to biological, archaeological and geological samples as well as applications to solve problems in planetary science are also welcome. Energetic beams of interest include atomic and molecular ions, neutrons, positrons and muons, plasmas directed at surfaces, electron and photon beams, including laser treated surfaces and studies of solids by photon radiation from rotating anodes, synchrotrons, etc. In addition, the interaction between various forms of radiation and radiation-induced deposition processes are relevant.