Position-sensitive spectroscopy of ultra-cold neutrons with Timepix pixel detector

Position-sensitive spectroscopy of ultra-cold neutrons with Timepix pixel detector
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使用 Timepix 像素探测器进行超冷中子位置敏感光谱

DOI:
10.1016/j.nima.2009.03.171
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发表时间:
2009
影响因子:
1.4
通讯作者:
M. Daum
M. Daum
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
J. Jakubek;M. Platkevič;P. Schmidt;P. Geltenbort;C. Plonka;M. Daum

文献摘要

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我们提出了一种硅像素设备 Timepix 的实现,用于超冷中子 (UCN) 的位置和能量敏感检测,效率为 70%,空间分辨率为 5.3μm。 Timepix 传感器表面沉积了一层 400μg/cm2 的 6LiF,用作中子转换器。使用标准飞行时间 (TOF) 技术测量每个检测到的中子的能量。因此,对于每个检测到的中子,其位置和能量都被确定。我们展示了这种技术,实时测量来自不锈钢弯曲箔的 UCN 的能量和位置相关反射,从而直接可视化不同中子能量的总反射角。
We present an implementation of the silicon pixel device Timepix for position and energy-sensitive detection of ultra-cold neutrons (UCN) with an efficiency of 70% and a spatial resolution of 5.3μm. A layer of 400μg/cm2of6LiF deposited onto the Timepix sensor surface was used as a neutron converter. The energy of each detected neutron is measured using standard time-of-flight (TOF) technique. Thus, for each detected neutron the position and energy is determined. We demonstrate this technique on the real-time measurement of energy- and position-dependent reflection of UCNs from a bent foil of stainless steel making direct visualization of total reflection angle for different neutron energies.