论文标题
改进CMS MUON系统升级HL-LHC的RPC
Improved-RPC for the CMS muon system upgrade for the HL-LHC
论文作者
论文摘要
在LHC的2阶段（称为高光度LHC（HL-LHC））期间，加速器将使瞬时光度提高到5 $ \ times $ 10 $^{34} $^{34} $ cm $^{ - 2} $ s $ s $ s $ s $^{ - 1} $，从而提供3000 fb $^$ fiver的集成亮度。 HL-LHC，CMS MUON系统将升级以维持有效的MUON触发和重建性能。电阻板腔室（RPC）由于其出色的计时分辨率而用作启发臂触发的专用探测器，并将$ |η| $（伪行）扩展到2.4的区域。在关闭3（LS3）之前，端盖的RE3/1和RE4/1站将配备具有与当前RPC系统不同的设计和几何形状的新的改进的电阻板室（IRPC）。 IRPC几何配置提高了检测器的速率能力及其在HL-LHC的恶劣背景条件下生存的能力。同样，开发了具有出色时序精度测量的新电子设备，分辨率小于150 PS，以读取来自条带的两侧的RPC探测器，以允许沿它们进行良好的空间分辨率。在CERN的伽玛辐射设施（GIF ++）上，已经对IRPC的性能进行了研究。正在进行的寿命研究将有助于在HL-LHC运行期间证明IRPC。主要检测器参数（例如电流，速率和电阻率）定期根据集成电荷的函数监测。将提出探测器性能的初步结果。
During Phase-2 of the LHC, known as the High Luminosity LHC (HL-LHC), the accelerator will increase its instantaneous luminosity to 5 $\times$ 10$^{34}$ cm$^{-2}$ s$^{-1}$, delivering an integrated luminosity of 3000 fb$^{-1}$ over 10 years of operation starting from 2027. In view of the HL-LHC, the CMS muon system will be upgraded to sustain efficient muon triggering and reconstruction performance. Resistive Plate Chambers (RPCs) serve as dedicated detectors for muon triggering due to their excellent timing resolution, and will extend $|η|$ (pseudorapidity) up to a region of 2.4. Before Long Shutdown 3 (LS3), the RE3/1 and RE4/1 stations of the endcap will be equipped with new improved Resistive Plate Chambers (iRPCs) having different design and geometry than the present RPC system. The iRPC geometry configuration improves the detector's rate capability and its ability to survive the harsh background conditions of the HL-LHC. Also, new electronics equipped with excellent timing precision measurements with a resolution of less than 150 ps are developed to readout the RPC detectors from both sides of the strips to allow for good spatial resolution along them. The performance of the iRPC has been studied with gamma radiation at the Gamma Irradiation Facility (GIF++) at CERN. Ongoing longevity studies will help to certify the iRPCs for the HL-LHC running period. The main detector parameters such as the currents, rate and resistivity are regularly monitored as a function of the integrated charge. Preliminary results of the detector performance will be presented.
