论文标题
LHCB Velo的升级I-朝着智能监控平台
The Upgrade I of LHCb VELO -- towards an intelligent monitoring platform
论文作者
论文摘要
大型强子对撞机美(LHCB)检测器旨在检测B-和C- HADRON的衰减,以研究CP违规和罕见衰变。在LHC运行2结束时,许多LHCB测量值仍然在统计上占主导地位。为了提高纯Hadronic通道的触发收益率,将删除硬件触发器,并以40 MHz读取检测器。结合亮度增加了五倍,需要对LHCB电子产品的根本变化,在某些情况下,用最先进的探测器技术更换了整个子检测器。相互作用区域周围的顶点定位器(VELO)用于重建长寿命颗粒(次要顶点)的碰撞点(主要顶点)和衰减顶点。升级后的Velo将由沿梁轴放置的52个模块组成,分为两个可伸缩的一半。这些模块将配备4个硅混合像素瓷砖,每个硅瓷砖都通过3个velopix ASIC读出。整个检测器预期的总输出数据速率约为1.6 TbIT/s。最高的占用ASIC的像素命中率约为900 mHIT/s,相应的输出数据速率为15 GBIT/s。 LHCB升级检测器将是第一个以40 MHz的LHC速率读取的检测器。 Velo升级将利用最新的检测器技术以此速度读取,同时保持所需的辐射曲线并最大程度地减少检测器材料。
The Large Hadron Collider beauty (LHCb) detector is designed to detect decays of b- and c- hadrons for the study of CP violation and rare decays. At the end of the LHC Run 2, many of the LHCb measurements remained statistically dominated. In order to increase the trigger yield for purely hadronic channels, the hardware trigger will be removed, and the detector will be read out at 40 MHz. This, in combination with the five-fold increase in luminosity, requires radical changes to LHCb's electronics, and, in some cases, the replacement of entire sub-detectors with state-of-the-art detector technologies. The Vertex Locator (VELO) surrounding the interaction region is used to reconstruct the collision points (primary vertices) and decay vertices of long-lived particles (secondary vertices). The upgraded VELO will be composed of 52 modules placed along the beam axis divided into two retractable halves. The modules will each be equipped with 4 silicon hybrid pixel tiles, each read out by 3 VeloPix ASICs. The total output data rate anticipated for the whole detector will be around 1.6 Tbit/s. The highest occupancy ASICs will have pixel hit rates of approximately 900 Mhit/s, with the corresponding output data rate of 15 Gbit/s. The LHCb upgrade detector will be the first detector to read out at the full LHC rate of 40 MHz. The VELO upgrade will utilize the latest detector technologies to read out at this rate while maintaining the required radiation-hard profile and minimizing the detector material.