The LHCb Vertex Locator (VELO) Pixel Detector Upgrade
The LHCb Vertex Locator (VELO) Pixel Detector Upgrade
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DOI：
10.1088/1748-0221/12/01/c01013
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发表时间：
2017-01
影响因子：
1.3
通讯作者：
E. Buchanan
中科院分区：
文献类型：
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作者：
E. Buchanan
LHCb实验的目的是在欧洲核子研究中心的大型强子对撞机（LHC）上对CP破坏和美丽和魅力强子的衰变进行高精度测量。预计在2019年的长周期2（LS2）期间，计划进行升级，这将使探测器通过将整个读出转换为无干扰系统来以更高的亮度运行。这将包括对围绕LHCb相互作用区域的硅跟踪器Vertex Tracker（VELO）进行实质性升级。VELO正在从硅条技术转向混合像素传感器，其中硅传感器与VeloPix ASIC结合。传感器原型已经在欧洲核子研究中心的SPS使用Timepix 3望远镜进行了严格的测试。升级的主要组成部分进行了总结和测试梁的结果。
The LHCb experiment is designed to perform high-precision measurements of CP violation and the decays of beauty and charm hadrons at the Large Hadron Collider (LHC) at CERN. There is a planned upgrade during Long Shutdown 2 (LS2), expected in 2019, which will allow the detector to run at higher luminosities by transforming the entire readout to a trigger-less system. This will include a substantial upgrade of the Vertex Locator (VELO), the silicon tracker that surrounds the LHCb interaction region. The VELO is moving from silicon strip technology to hybrid pixel sensors, where silicon sensors are bonded to VeloPix ASICs. Sensor prototypes have undergone rigorous testing using the Timepix3 Telescope at the SPS, CERN. The main components of the upgrade are summarised and testbeam results presented.