在200 MeV以下的能量范围内,用于n_TOF裂变截面“绝对”测量的探测器系统

IF 1.3 4区 工程技术 Q3 INSTRUMENTS & INSTRUMENTATION
Pirovano, E., Manna, A., Aberle, O., Amaducci, S., Colonna, N., Camprini, P. Console, Cosentino, L., Dietz, M., Ducasse, Q., Finocchiaro, P., Massimi, C., Mengoni, A., Nolte, R., Radeck, D., Tassan-Got, L., Terranova, N., Vannini, G.
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引用次数: 0

摘要

在欧洲核子研究中心的中子飞行时间装置n_TOF上进行了$^{235}$U(n,f)截面的新测量。实验集中在20 MeV到几百MeV的中子能量范围内,并归一化为中子在氢上的散射。这是该设施首次进行此类测量,其能量范围到目前为止还不常被探索,因此探测器的开发阶段对其成功至关重要。设计了平行板裂变室(PPFC)和反冲质子望远镜(RPT)两种探测器,用于测量入射中子能量从30 MeV到200 MeV的范围。实验的目的是在分配的运行时间内最小化统计不确定性。为确保了解和控制系统性影响,作出了若干努力。结果表明,该探测器适用于30 MeV以上的n_TOF测量,并为未来可能的发展方向指明了道路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A detector system for `absolute' measurements of fission cross sections at n_TOF in the energy range below 200 MeV
A new measurement of the $^{235}$U(n,f) cross section was performed at the neutron time-of-flight facility n_TOF at CERN. The experiment focused on neutron energies from 20 MeV to several hundred MeV, and was normalized to neutron scattering on hydrogen. This is a measurement first of its kind at this facility, in an energy range that was until now not often explored, so the detector development phase was crucial for its success. Two detectors are presented, a parallel plate fission chamber (PPFC) and a recoil proton telescope (RPT), both dedicated to perform measurements in the incident neutron energy range from 30 MeV to 200 MeV. The experiment was designed to minimize statistical uncertainties in the allocated run time. Several efforts were made to ensure that the systematic effects were understood and under control. The results show that the detectors are suited for measurements at n_TOF above 30 MeV, and indicate the path for possible future lines of development.
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来源期刊
Journal of Instrumentation
Journal of Instrumentation 工程技术-仪器仪表
CiteScore
2.40
自引率
15.40%
发文量
827
审稿时长
7.5 months
期刊介绍: Journal of Instrumentation (JINST) covers major areas related to concepts and instrumentation in detector physics, accelerator science and associated experimental methods and techniques, theory, modelling and simulations. The main subject areas include. -Accelerators: concepts, modelling, simulations and sources- Instrumentation and hardware for accelerators: particles, synchrotron radiation, neutrons- Detector physics: concepts, processes, methods, modelling and simulations- Detectors, apparatus and methods for particle, astroparticle, nuclear, atomic, and molecular physics- Instrumentation and methods for plasma research- Methods and apparatus for astronomy and astrophysics- Detectors, methods and apparatus for biomedical applications, life sciences and material research- Instrumentation and techniques for medical imaging, diagnostics and therapy- Instrumentation and techniques for dosimetry, monitoring and radiation damage- Detectors, instrumentation and methods for non-destructive tests (NDT)- Detector readout concepts, electronics and data acquisition methods- Algorithms, software and data reduction methods- Materials and associated technologies, etc.- Engineering and technical issues. JINST also includes a section dedicated to technical reports and instrumentation theses.
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