Speaker
Description
The High-Luminosity Large Hadron Collider (HL-LHC) is designed to achieve a total integrated luminosity of 3000 fb-1. This significantly increases the radiation exposure to detectors and raises the average number of pileup interactions per bunch crossing to 140–200, which is three to five times higher than current operational levels. To address the challenges posed by high radiation and increased pileup, the endcap calorimeterof the Compact Muon Solenoid (CMS) detector will be upgraded with the High-Granularity Calorimeter (HGCal), replacing the existing endcap calorimeters. The HGCal is a sampling calorimeter that uses large-area silicon sensors and scintillators as active media. It provides excellent energy, position, and time resolution, making it a next-generation "5D" calorimeter. Currently, the HGCal is in its construction phase. Mass production of silicon modules has begun. The Institute of High Energy Physics (IHEP), as one of the six assembly centers, is responsible for the production of approximately 100 m² of silicon modules for the electromagnetic calorimeter of the HGCal, accounting for about 20% of the total silicon detector area. In addition, the IHEP has undertaken the research and development of the tungsten-copper（CuW）baseplates and Kapton films used in the electromagnetic calorimeter of the HGCal, and has collaborated with domestic industries to produce approximately 90% of the total area of both the CuW baseplates and the corresponding Kapton films. This report presents the current status of mass production of the HGCal silicon modules and highlights the contributions made by the IHEP site.
| 请选择分会 | 粒子物理实验技术 |
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