Charge Collection Efficiency Measurements for Segmented Silicon Detectors Irradiatedto $1\times 10^{16}\ {\hbox {n}}\ {\hbox {cm}}^{-2}$
Charge Collection Efficiency Measurements for Segmented Silicon Detectors Irradiatedto $1\times 10^{16}\ {\hbox {n}}\ {\hbox {cm}}^{-2}$
复制标题
辐射至 $1 imes 10^{16} {hbox {n}} {hbox {cm}}^{-2}$ 的分段硅探测器的电荷收集效率测量
DOI：
10.1109/tns.2008.924093
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发表时间：
2008
影响因子：
1.8
通讯作者：
Phil Allport
中科院分区：
文献类型：
--
作者：
G. Casse;A. Affolder;Phil Allport
CERN 大型强子对撞机 (LHC) 的分阶段升级计划进展顺利。升级后的机器的目标是超级大型强子对撞机（SLHC）的目标是光度提高近十倍，达到接近 1035 cm2 s-1。 SLHC 最里面的跟踪器设备将暴露在超过 1 倍 1016 neq cm-2 的强子辐射剂量下。因此，SLHC 实验跟踪系统中使用的探测器需要能够承受这些极端的能量密度。由薄 (140 µm) 和标准 (300 µm) p 型基板制成的分段 n 条带硅探测器已用中子辐照至高达 1 倍 1016 neq cm-2 的不同注量，并使用高速（40 MHZ，25 ns 整形时间）模拟电子器件根据电荷收集效率测量进行表征。这些测量是薄硅微带器件和厚硅微带器件的电荷收集性能与未来超级对撞机相关的不同注量函数的首次直接比较。他们还为平面技术（微带和像素探测器）制造的分段传感器在这些极端剂量下收集的最大电荷设定了参考值，从而可以预测可在 SLHC 实验的内部跟踪系统中运行的硅探测器的功能。
Plans are well advanced for a phased upgrade program of the Large Hadron Collider (LHC) at CERN. An improvement of nearly a factor of ten to reach a luminosity close to 1035 cm2 s-1 is the target of the upgraded machine, called the Super LHC (SLHC). The innermost tracker devices in the SLHC will be exposed to hadron radiation doses in excess of 1 times 1016 neq cm-2. The detectors to be used in the tracker system of the SLHC experiments need therefore to be qualified to these extreme fluences. Segmented n-strip silicon detectors made with thin (140 mum) and standard (300 mum) p-type substrates have been irradiated with neutrons to different fluences up to 1 times 1016 neq cm-2 and characterised in term of charge collection efficiency measurements using high speed (40 MHZ, 25 ns shaping time) analogue electronics. These measurements are the first direct comparison between the charge collection performance of thin and thick silicon microstrip devices as a function of different fluences relevant to future supercolliders. They also set a reference for the maximum collected charge by segmented sensors made in planar technologies (microstrip and pixel detectors) at these extreme doses, allowing for predictions on the functionality of silicon detectors that can operated in the inner tracking system of SLHC experiments.