阿尔法磁谱仪（AMS）的空间校准
Alignment of the Alpha Magnetic Spectrometer (AMS) in space
摘要：
阿尔法磁谱仪（AMS）是一个精密的粒子物理探测器，在国际空间站上410公里的高度运行。AMS硅跟踪器与永磁体一起测量宇宙射线的刚度（动量/电荷），范围从0.5 GV到几个TV。为了进行准确的刚度测量，必须通过对准程序在微米级确定2000多个跟踪器模块的位置。跟踪器首先在CERN使用400 GeV/c质子测试束进行校准，然后在发射到太空后使用宇宙射线事件进行重新校准。介绍了一种空间实验用永磁谱仪的独特校准方法。详细讨论了开发的基本数学算法。
英文摘要：
The Alpha Magnetic Spectrometer (AMS) is a precision particle physics detector operating at an altitude of 410 km aboard the International Space Station. The AMS silicon tracker, together with the permanent magnet, measures the rigidity (momentum/charge) of cosmic rays in the range from 0.5 GV to several TV. In order to have accurate rigidity measurements, the positions of more than 2000 tracker modules have to be determined at the micron level by an alignment procedure. The tracker was first aligned using the 400 GeV/c proton test beam at CERN and then re-aligned using cosmic-ray events after being launched into space. A unique method to align the permanent magnetic spectrometer for a space experiment is presented. The developed underlying mathematical algorithm is discussed in detail.
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