Performance of silicon pixel detectors at small track incidence angles
Performance of silicon pixel detectors at small track incidence angles
复制标题
小轨道入射角下硅像素探测器的性能
DOI：
10.1016/j.nima.2016.03.099
复制
发表时间：
2015
影响因子：
8.2
通讯作者：
S. Viel
中科院分区：
文献类型：
--
作者：
S. Viel
为了使ATLAS实验能够成功地跟踪在高亮度大型强子对撞机的高能碰撞中产生的带电粒子，目前的ATLAS内部探测器将被完全由硅像素和条带探测器组成的内部跟踪器（ITk）取代。的ITk的跟踪覆盖范围的扩展到非常向前的伪快度值的建议，使用放置在一个长的圆柱形层的束管周围的像素模块。当带电粒子以小入射角穿过硅传感器时检测到的长像素簇的测量具有显著提高跟踪效率、假跟踪抑制和非常向前区域中的ITk的分辨率的潜力。使用在SLAC和CERN收集的测试光束数据，研究了最先进的像素模块在小轨道入射角下的性能。
In order to enable the ATLAS experiment to successfully track charged particles produced in high-energy collisions at the High-Luminosity Large Hadron Collider, the current ATLAS Inner Detector will be replaced by the Inner Tracker (ITk), entirely composed of silicon pixel and strip detectors. An extension of the tracking coverage of the ITk to very forward pseudorapidity values is proposed, using pixel modules placed in a long cylindrical layer around the beam pipe. The measurement of long pixel clusters, detected when charged particles cross the silicon sensor at small incidence angles, has potential to significantly improve the tracking efficiency, fake track rejection, and resolution of the ITk in the very forward region. The performance of state-of-the-art pixel modules at small track incidence angles is studied using test beam data collected at SLAC and CERN.