论文标题
一种新型技术，用于测量使用门控箔的宝石堆放的雪崩波动
A novel technique for the measurement of the avalanche fluctuations of a GEM stack using a gating foil
论文作者
论文摘要
我们开发了一种新型技术，用于使用在国际线性撞机实验（ILD-TPC）中为时间投影室制备的门控装置（Gating Foil）来测量气体探测器的雪崩波动的大小。除了门控函数外，门控箔还能够控制气体扩增后检测到的漂移电子的平均分数。通过脉冲紫外线激光器创建的电子对的信号电荷宽度和形状（偏度），可以使用门控箔的传输速率来确定单个电子气体增益的相对方差。我们介绍了测量原理以及使用AR-CF $ _4 $ _4 $（3％） - 异丁烷（2％）在大气压下运行的气体电子乘数（GEMS）获得的结果。还讨论了雪崩波动对ILD-TPC空间分辨率的影响。
We have developed a novel technique for the measurement of the size of avalanche fluctuations of gaseous detectors using a gating device (gating foil) prepared for the time projection chamber in the international linear collider experiment (ILD-TPC). In addition to the gating function, the gating foil is capable of controlling the average fraction of drift electrons detected after gas amplification. The signal charge width and shape (skewness) for electron-ion pairs created by a pulsed UV laser as a function of the transmission rate of the gating foil can be used to determine the relative variance of gas gain for single electrons. We present the measurement principle and the result obtained using a stack of gas electron multipliers (GEMs) operated in a gas mixture of Ar-CF$_4$(3%)-isobutane(2%) at atmospheric pressure. Also discussed is the influence of the avalanche fluctuations on the spatial resolution of the ILD-TPC.
