对于TES X射线微热量计的一种高度线性校准度量.
C G Pappas1, J W Fowler1, D A Bennett1
1Quantum Sensors Group, NIST Boulder Laboratories, 325 Broadway, MS 687.08, Boulder, Colorado 80305, USA.
概括
过渡端传感器X射线微热量计受益于新的校准度量,E_Joule,它提供优越的线性比传统的最佳过脉冲高度 (OFPH). 这一进步有望实现更准确,更有效的X射线微热量计校准.
科学领域:
- 物理 物理学 物理
- 天体物理学 天体物理学
- 探测器物理学的物理
背景情况:
- 过渡端传感器X射线微热度计通常使用实证方法进行校准.
- 标准校准度量,最佳过脉冲高度 (OFPH),表现出对光子能量 (Eγ) 的未知依赖,导致校准错误和广泛的测量要求.
- 需要一个更线性的校准度量来提高准确度和减少校准时间.
研究的目的:
- 评估X射线微热量计的物理动机校准指标E_Joule的线性.
- 将E_Joule的线性与传统的OFPH度量进行比较.
- 为了评估优化版本的性能,E_J,用于校准.
主要方法:
- 对光子能量在4.5 keV和9.6 keV之间的校准脉冲进行了测量.
- 探测器对6keV光子进行了优化,以方便直接比较.
- 使用测量数据分析了E_Joule和OFPH的线性.
主要成果:
- 与OFPH相比,E_Joule在测试的能量范围中证明了一个数量级更适合线性函数.
- 优化度量,E_J,在数据的2-3 eV噪声水平内表现出线性.
- 这些发现表明,与OFPH相比,线性显著改善.
结论:
- E_Joule度量及其优化形式E_J,为过渡边缘传感器X射线微热量计提供了更加线性和潜在更准确的校准方法.
- 这种改进的线性可以减少校准错误和需要耗时的校准程序.
- 结果表明E_Joule是OFPH的一个有希望的替代品,用于先进的X射线探测器校准.
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