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神话三:用于同步光子粉末衍射实验的单光子计数探测器的进展

Marie Andrä¹, Anna Bergamaschi¹, Filippo Baruffaldi¹

¹Paul Scherrer Insitute, Forschungsstrasse 111, 5232 Villigen - PSI, Switzerland.

Journal of synchrotron radiation

|February 13, 2025

概括

MYTHEN III探测器通过更快,更准确的单光子计数来增强同步子实验. 它实现了更高的计数率和更好的性能,用于时间解析粉末衍射.

科学领域:

同步子辐射科学科学
材料科学仪器仪表材料科学仪器仪表
粒子检测技术粒子检测技术

背景情况:

同步辐射实验需要先进的探测器来进行高性能测量.
现有的探测器在时间解决的研究中面临数量和效率的局限性.
MYTHEN II探测器为进一步进步提供了基础.

研究的目的:

为了引入 MYTHEN III 单光子计数微条形探测器.
与其前身相比,详细说明其改进的性能特征.
为了证明其在时间解决和边缘粉末衍射中的实用性.

主要方法:

开发基于MYTHEN III.0读出芯片和条传感器的MYTHEN III探测器.
使用三个独立的比较器来检测堆积和改进计数速度.
实现数字上芯片插值和探头操作模式.
性能基准测试包括计数率,率,最小可检测能量和噪声特征.

主要成果:

在90%的效率下达到11±2mphoton的最大计数速率能力s−1条-1条,比MYTHEN II显著增加.
在8位模式下最大率高达360kHz,具有无死时间读取输出.
最低可检测能量为4.3 ± 0.3 keV,具有低等效噪声电荷 (ENC) 和值分散.
能量校准稳定性与温度 (<0.5%°C−1).

结论:

MYTHEN III探测器为同步辐射应用提供了显著的性能改进.
它的增强功能,特别是计数速率和速度,有利于时间解析粉末衍射.
该探测器代表了材料科学微条式探测器技术的重大进步.

关键词:

第三个神话神话III 一个X射线探测器.在X射线粉末衍射过程中,X射线粉末衍射微条带传感器的使用.一个光子计数计数.

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