Study of Reconstruction Methods for a Time Projection Chamber with GEM Gas Amplification System
Study of Reconstruction Methods for a Time Projection Chamber with GEM Gas Amplification System
复制标题
GEM气体放大系统时间投影室改造方法研究
DOI：
10.3204/desy-thesis-2006-040
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
R. Diener
中科院分区：
文献类型：
--
作者：
R. Diener
一个新的e+e−线性对撞机的能量范围高达1 TeV的计划在一个国际合作：国际线性对撞机（ILC）。这个对撞机将能够对希格斯粒子和标准模型之外的物理进行精确测量。在大型探测器概念（LDC）中-这是国际法委员会探测器的一个建议-时间投影室（TPC）被设想为主要的跟踪装置。为了满足对分辨率的要求，并能够在ILC的环境中工作，在TPC中应用新的气体放大技术是必要的。一种选择是基于气体电子倍增器（GEM）的放大系统。由于-与旧技术相比-信号的空间宽度小，该技术对读出结构和重建方法提出了新的要求。在这项工作中，不同的重建方法的性能和系统性进行了研究，根据测量的数据与TPC原型在高磁场高达4 T和Monte Carlo模拟的数据。给出了可达点分辨率的最新结果，并对其局限性进行了研究
new e+e− linear collider with an energy range up to 1TeV is planned in an international collaboration: the International Linear Collider (ILC). This collider will be able to do precision measurements of the Higgs particle and of physics beyond the Standard Model. In the Large Detector Concept (LDC) – which is one proposal for a detector at the ILC – a Time Projection Chamber (TPC) is foreseen as the main tracking device. To meet the requirements on the resolution and to be able to work in the environment at the ILC, the application of new gas amplification technologies in the TPC is necessary. One option is an amplification system based on Gas Electron Multipliers (GEMs). Due to the – in comparison with older technologies – small spatial width of the signals, this technology poses new requirements on the readout structures and the reconstruction methods. In this work, the performance and the systematics of different reconstruction methods have been studied, based on data measured with a TPC prototype in high magnetic fields of up to 4T and data from a Monte Carlo simulation. The latest results of the achievable point resolution are presented and their limitations have been investigated