Abstract

This paper describes systematic measurements of the main parameters of the DIMEX-Si silicon microstrip detector prototype, designed to study fast processes in a beam of synchrotron radiation (SR). The dynamic range, spatial resolution and temporal parameters of the detector are estimated. The parameters of the prototype silicon detector are compared with the DIMEX-G gas version. The maximum flux which can be measured by the silicon detector is 40 times higher than that of the gas detector. The spatial resolution of the silicon detector is 130 microns and that of the gas detector is 250 microns. The estimated time resolution of the silicon detector is 15 ns, while for a gas detector this value is about 50 ns. All the characteristics of DIMEX-Si are measured with a cycle time of 25 ns. The results of the first tests of a full-scale silicon detector for diffraction studies, operating in the integrating mode at a speed of up to 2 Mframes/s, are also given. The sensor contains 1024 strips 30 mm long with a step of 50 microns; 512 of these strips are connected to readout electronics based on APC128 ASIC. Each chip contains 128 channels, which consist of a low-noise integrator with 32 analog memory cells. The possibility of signal visualization from single photons and electrons from ¹⁰⁹Cd and ⁹⁰Sr sources is shown.

中文翻译：

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用于研究SR光束快速漂浮过程的探测器

摘要

本文介绍了DIMEX-Si硅微带检测器原型的主要参数的系统测量，旨在研究同步辐射（SR）光束中的快速过程。估计了探测器的动态范围，空间分辨率和时间参数。将原型硅探测器的参数与DIMEX-G气体版本进行了比较。硅探测器可以测量的最大通量比气体探测器高40倍。硅探测器的空间分辨率为130微米，气体探测器的空间分辨率为250微米。硅探测器的估计时间分辨率为15 ns，而对于气体探测器，该值约为50 ns。DIMEX-Si的所有特性均以25 ns的循环时间测量。还给出了用于衍射研究的全尺寸硅检测器的第一批测试结果，这些测试器在积分模式下以最高2 Mframes / s的速度运行。传感器包含1024条30毫米长的条带，步长为50微米。这些带中的512条连接到基于APC128 ASIC的读出电子设备。每个芯片包含128个通道，这些通道由一个具有32个模拟存储单元的低噪声积分器组成。来自单个光子和电子的信号可视化的可能性^显示了109 Cd和⁹⁰ Sr源。