A Transparent Detector for n_TOF Neutron Beam Monitoring
A Transparent Detector for n_TOF Neutron Beam Monitoring
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DOI：
10.3938/jkps.59.1597
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发表时间：
2011-08-11
影响因子：
0.6
通讯作者：
Siegler, P.
中科院分区：
文献类型：
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作者：
Andriamonje, S.;Calviani, M.;Siegler, P.
为了使用飞行时间技术获得高精度的截面测量，重要的是以良好的精度知道测量站的中子注量。专用于这些测量的探测器应置于用于俘获和裂变截面测量的探测器的上游。主要要求是尽可能减少探测器的材料，以最大限度地减少中子束的扰动，特别是设备本身产生的背景。根据这些考虑，一个新的中子探测器配备了一个小质量的设备的基础上MicroMegas“微块”技术已被开发作为监测探测器的CERN n_TOF中子束。介绍了用于中子束监测的透明探测器的创新概念的不同特点。在欧洲核子研究中心的n_TOF设施的新spectrometer目标的调试中获得的结果示出，与FLUKA代码进行的模拟相比。
In order to obtain high precision cross-section measurements using the time-of-flight technique, it is important to know with good accuracy the neutron fluence at the measuring station. The detector dedicated to these measurements should be placed upstream of the detectors used for capture and fission cross-section measurements. The main requirement is to reduce the material of the detector as much as possible, in order to minimize the perturbation of the neutron beam and, especially, the background produced by the device itself. According to these considerations, a new neutron detector equipped with a small-mass device based on MicroMegas "Micro-bulk" technology has been developed as a monitoring detector for the CERN n_TOF neutron beam. A description of the different characteristics of tins innovative concept of transparent detector for neutron beam monitoring is presented. The result obtained in the commissioning of the new spallation target of the n_TOF facility at CERN is shown, compared with simulations performed with the FLUKA code.