Determination of the Lorentz Angle in Microstrip Silicon Detectors with Cosmic Muons
Determination of the Lorentz Angle in Microstrip Silicon Detectors with Cosmic Muons
复制标题
宇宙μ子微带硅探测器洛伦兹角的测定
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
R. D’Alessandro
中科院分区：
文献类型：
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作者：
V. Ciulli;S. Frosali;C. Genta;R. D’Alessandro
CMS实验中的微带硅跟踪器将在4T磁场中工作，在大型强子对撞机恶劣的辐射环境中工作。因此，由于高磁场，载流子的漂移运动将受到洛伦兹力的影响。此外，辐射损伤将随着时间的推移改变这种漂移的性质。本文介绍了一种从重建径迹测量洛伦兹角的方法，并将磁铁测试和宇宙挑战数据得到的结果与作者开发的一个模型的期望值进行了比较，该模型考虑了跟踪器寿命期间的所有相关参数(例如探测器的温度和耗尽电压)。
The microstrip silicon tracker of the CMS experiment will operate in a 4 T magnetic field in the harsh radiation environment of the Large Hadron Collider. The drift motion of the charge carriers will be therefore affected by the Lorentz force due to the high magnetic field. Furthermore, radiation damage will change in time the properties of this drift. In this note a method to measure the Lorentz angle from reconstructed tracks is presented and results obtained on Magnet Test and Cosmic Challenge data are compared to the values expected from a model, developed by the authors, which takes into account all the relevant parameters during the tracker lifetime (e.g. temperature and depletion voltage of the detectors).