26–30 Jul 2021
Zoom
Europe/Berlin timezone

Status and plans for the CMS High Granularity Calorimeter upgrade project

30 Jul 2021, 09:30
15m
Zoom

Zoom

Parallel session talk Detector R&D and Data Handling T12: Detector R&D and Data Handling

Speaker

Clemens Lange (CERN)

Description

The CMS Collaboration is preparing to build replacement endcap calorimeters for the HL-LHC era. The new high-granularity calorimeter (HGCAL) is, as the name implies, a highly-granular sampling calorimeter with approximately six million silicon sensor channels (~1.1 cm^2 or 0.5 cm^2 cells) and about four hundred thousand channels of scintillator tiles readout with on-tile silicon photomultipliers. The calorimeter is designed to operate in the harsh radiation environment at the HL-LHC, where the average number of interactions per bunch crossing is expected to exceed 140. Besides measuring energy and position of the energy deposits the electronics is also designed to measure the time of their arrival with a precision on the order of 50 ps. In this talk, the reasoning and ideas behind the HGCAL, the current status of the project, the many lessons learnt so far, in particular from beam tests, and the challenges ahead will be presented.

First author CMS
Email arnd.meyer@cern.ch
Collaboration / Activity CMS

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