Calibration of a Bonner sphere extension (BSE) for high-energy neutron spectrometry.
Calibration of a Bonner sphere extension (BSE) for high-energy neutron spectrometry.
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DOI：
10.1016/j.radmeas.2010.09.003
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发表时间：
2010-12
影响因子：
2
通讯作者：
Hertel NE
中科院分区：
文献类型：
--
作者：
Howell RM;Burgett EA;Wiegel B;Hertel NE
在最近的一项工作中，我们构建了模块化多球系统，该系统通过添加铜，钨或铅的同心壳来扩展现有的市售Bonner球系统的设计。我们的模块化多球系统被称为邦纳球扩展（BSE）。BSE在洛斯阿拉莫斯中子科学中心的高能中子束（热至800 MeV）中进行了测试，与标准BSS（和）相比，BSE在20 MeV以上能量区域的中子谱测量方面有所改进。然而，当该系统在LANSCE进行初始测试时，BSE尚未校准。因此，本研究的目的是进行校准测量。这些校准测量是在布伦瑞克，德国的Physikalisch-Technische Bundesanstalt（PTB）使用单能中子ISO 8529-1参考束进行的。这些实验使用了以下单能参考束：14.8 MeV、1.2 MeV、565 keV和144 keV。BSE的响应函数使用蒙特卡罗N粒子代码扩展（MCNPX）计算。计算每个球体和能量的测量响应和计算响应之间的百分比差异。单个微球的测量和计算响应值之间的差异范围为7.9%-16.7%，所有微球的算术平均值为（10.9 ± 1.8）%。这些球体特定的校正因子将应用于所有未来使用BSE进行的测量。
In a recent work, we constructed modular multisphere system which expands upon the design of an existing, commercially available Bonner sphere system by adding concentric shells of copper, tungsten, or lead. Our modular multisphere system is referred to as the Bonner Sphere Extension (BSE). The BSE was tested in a high energy neutron beam (thermal to 800 MeV) at Los Alamos Neutron Science Center and provided improvement in the measurement of the neutron spectrum in the energy regions above 20 MeV when compared to the standard BSS ( and). However, when the initial test of the system was carried-out at LANSCE, the BSE had not yet been calibrated. Therefore the objective of the present study was to perform calibration measurements. These calibration measurements were carried out using monoenergetic neutron ISO 8529-1 reference beams at the Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany. The following monoenergetic reference beams were used for these experiments: 14.8 MeV, 1.2 MeV, 565 keV, and 144 keV. Response functions for the BSE were calculated using the Monte Carlo N-Particle Code, eXtended (MCNPX). The percent difference between the measured and calculated responses was calculated for each sphere and energy. The difference between measured and calculated responses for individual spheres ranged between 7.9 % and 16.7 % and the arithmetic mean for all spheres was (10.9 ± 1.8) %. These sphere specific correction factors will be applied for all future measurements carried-out with the BSE.
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影响因子：
1
作者：
Bedogni, R.;Esposito, A.;Angelone, M.
通讯作者：
Angelone, M.
DOI：
10.1016/0029-554x(60)90043-4
发表时间：
1960-01-01
期刊：
NUCLEAR INSTRUMENTS & METHODS
影响因子：
--
作者：
BRAMBLETT, RL;EWING, RI;BONNER, TW
通讯作者：
BONNER, TW
影响因子：
1
作者：
Caresana, M.;Agosteo, S.;Silari, M.
通讯作者：
Silari, M.
DOI：
10.1016/s0168-9002(01)01207-4
发表时间：
2002-03-21
影响因子：
1.4
作者：
Reginatto, M
通讯作者：
Reginatto, M
影响因子：
1.5
作者：
Howell, Rebecca M.;Burgett, Eric;Salehpour, Mohammad
通讯作者：
Salehpour, Mohammad