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首页> 外文期刊>Nuclear Instruments & Methods in Physics Research. B, Beam Interactions with Materials and Atoms >Gas bremsstrahlung and induced photoneutrons in the NSRRC's electron storage ring: A comparison of measurements and simulations
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Gas bremsstrahlung and induced photoneutrons in the NSRRC's electron storage ring: A comparison of measurements and simulations

机译：NSRRC电子存储环中的气体致辐射和感应光中子：测量与模拟的比较

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摘要

This study investigated the characteristics of gas bremsstrahlung and induced photoneutrons from the electron storage ring in National Synchrotron Radiation Research Center (NSRRC). Gas bremsstrahlung is generated in the vacuum chamber of an electron storage ring by interactions of the circulating electrons with the atoms of the residual gas. The emitted photons with sufficiently high energies can further produce neutrons by means of photonuclear interactions. Photoneutrons produced in a lead target struck by gas bremsstrahlung were measured as a function of target thickness by using high-efficiency neutron detectors in a well-defined configuration. A Monte Carlo simulation of the whole process including generation of gas bremsstrahlung, production of photoneutrons and subsequent neutron transport has been performed in an integrated manner and the results were directly compared with the measurements on an absolute basis. The agreement between them is very satisfactory and hence validates the evaluation of the characteristics of gas bremsstrahlung and induced photoneutrons in NSRRC.
机译：这项研究在国家同步辐射研究中心（NSRRC）中研究了气体bre致辐射和来自电子存储环的感应光中子的特性。气体致辐射通过循环电子与残留气体原子的相互作用在电子存储环的真空室中产生。具有足够高能量的发射光子可以通过光核相互作用进一步产生中子。通过在定义明确的配置中使用高效中子探测器，测量了由气体gas致辐射撞击的铅靶中产生的光中子随靶厚度的变化。对整个过程进行了蒙特卡洛模拟，包括气体and致辐射的产生，光中子的产生以及随后的中子传输，并以绝对方式将结果直接与测量结果进行了比较。它们之间的协议非常令人满意，因此验证了NSRRC中的气体gas致辐射和感应光中子特性的评估。

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