Wu Ming, Moy Ken, Kruschwitz Craig, Rochau Greg
Sandia National Laboratory, Albuquerque, New Mexico 87185, USA.
Special Technology Laboratories, NSTec, Santa Barbara, California 93111-2335, USA.
Rev Sci Instrum. 2014 Nov;85(11):11D607. doi: 10.1063/1.4890293.
MCP detector performance at hard x-ray energies from 6 to 25 keV was recently investigated using NSLS beamline X15A at BNL. Measurements were made with an NSTec Gen-II (H-CA-65) framing camera, based on a Photonis MCP with ∼10 μm in diameter pores, ∼12 μm center-center spacing, an L/D ratio of 46, and a bias angle of 8°. The MCP characterizations were focused on (1) energy and angle dependent sensitivity, (2) energy and angle dependent spatial resolution, (3) energy dependent gain performance, and (4) energy dependent dynamic range. These measurement corroborated simulation results using a Monte Carlo model that included hard x-ray interactions and the subsequent electron cascade in the MCP.
最近，利用布鲁克海文国家实验室（BNL）的国家同步加速器光源（NSLS）的X15A光束线，对MCP探测器在6至25keV硬X射线能量下的性能进行了研究。测量是使用NSTec Gen-II（H-CA-65）分幅相机进行的，该相机基于一个直径约10μm的孔、中心间距约12μm、L/D比为46且偏置角为8°的光子学MCP。MCP的特性主要集中在：（1）能量和角度相关的灵敏度；（2）能量和角度相关的空间分辨率；（3）能量相关的增益性能；（4）能量相关的动态范围。这些测量结果证实了使用蒙特卡罗模型的模拟结果，该模型包括硬X射线相互作用以及MCP中随后的电子级联过程。
