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arXiv 1302.6035physics.ins-dethep-ex
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LHCb VELO升级

The LHCb VELO Upgrade

Rodriguez Perez P., LHCb VELO Group

摘要:

LHCb是一个前向光谱仪实验,致力于研究欧洲核子研究中心大型强子对撞机(LHC)质子碰撞产生的美丽和魅力强子衰变的新物理。VErtex LOcator(VELO)是围绕相互作用点的微带硅探测器,提供跟踪和顶点测量。计划于2018年进行的LHCb实验升级将把亮度提高到$\rm 2\times10^{33}\ cm^{-2}s^{-1}$,并将作为一个事件率为40 MHz的无干扰系统进行读出。极不均匀的辐射剂量将达到$\rm 5 \times 10^{15}$ 1 MeV $\rm n_{eq}/cm^2$在VELO传感器的最里面的区域,和输出数据带宽将增加40倍。正在开发一种升级的探测器,该探测器基于Timepix/Medipix系列的像素传感器,具有55 x 55 $\rm μm^2$像素。此外,正在并行开发比电流检测器具有更细间距、更高粒度和更薄的微带解决方案。VELO升级计划的现状将与最近的试验梁结果一起描述。

英文摘要:

LHCb is a forward spectrometer experiment dedicated to the study of new physics in the decays of beauty and charm hadrons produced in proton collisions at the Large Hadron Collider (LHC) at CERN. The VErtex LOcator (VELO) is the microstrip silicon detector surrounding the interaction point, providing tracking and vertexing measurements. The upgrade of the LHCb experiment, planned for 2018, will increase the luminosity up to $\rm 2\times10^{33}\ cm^{-2}s^{-1}$ and will perform the readout as a trigger-less system with an event rate of 40 MHz. Extremely non-uniform radiation doses will reach up to $\rm 5 \times 10^{15}$ 1 MeV$\rm n_{eq}/cm^2$ in the innermost regions of the VELO sensors, and the output data bandwidth will be increased by a factor of 40. An upgraded detector is under development based in a pixel sensor of the Timepix/Medipix family, with 55 x 55 $\rm μm^2$ pixels. In addition a microstrip solution with finer pitch, higher granularity and thinner than the current detector is being developed in parallel. The current status of the VELO upgrade program will be described together with recent testbeam results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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