TTF-FEL束流轨迹监测器硅像素探测器的测试结果
Test Results on the Silicon Pixel Detector for the TTF-FEL Beam Trajectory Monitor
摘要：
本文介绍了TESLA实验装置自由电子激光束流轨迹监测器硅像素探测器的测试结果。为了确定探测器和读出的电子噪声以及校准不同像素的信号幅度，使用锰K线的6keV光子。两种不同的方法决定了探测器的空间精度：在一种设置中，激光束被聚焦到一条直线上，并在像素结构上移动。在另一种方法中，使用电子显微镜的低强度电子束扫描检测器。这两种方法都表明，探测器的对称轴在0.4微米内定义为一条直线。探测器对低能X射线的灵敏度是在同步加速器光源HASYLAB上用真空紫外光束测量的。此外，还利用电子显微镜研究了探测器的抗辐射性能。
英文摘要：
Test measurements on the silicon pixel detector for the beam trajectory monitor at the free electron laser of the TESLA test facility are presented. To determine the electronic noise of detector and read-out and to calibrate the signal amplitude of different pixels the 6 keV photons of the manganese K line are used. Two different methods determine the spatial accuracy of the detector: In one setup a laser beam is focused to a straight line and moved across the pixel structure. In the other the detector is scanned using a low-intensity electron beam of an electron microscope. Both methods show that the symmetry axis of the detector defines a straight line within 0.4 microns. The sensitivity of the detector to low energy X-rays is measured using a vacuum ultraviolet beam at the synchrotron light source HASYLAB. Additionally, the electron microscope is used to study the radiation hardness of the detector.
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