The CMS Central Hadron Calorimeter Upgrade

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Beurs van Berlage

Beurs van Berlage

Poster Sensors: 1a) Calorimetry


Jim Freeman (Fermi National Accelerator Lab. (US))


The CMS central hadron calorimeters will undergo an extensive upgrade before LHC Run 3 which will occur in 2019. The upgrade is based on replacement of the current HPD with SIPMs read out into a new ADC, the QIE11. Longitudinal segmentation of the HCAL will be increased by about 3X depending on eta. The entire front and back end electronics will be replaced with a 3X higher bandwidth system. The new backend is based on µTCA. We report on the design and status of SIPM development, QIE11 development, and backend system tests.

Primary author

Jim Freeman (Fermi National Accelerator Lab. (US))

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