ETROC2 as the Final Version for CMS MTD Endcap Timing Layer (ETL) Upgrade

Abstract

The ETROC2 is the first full-size full-functionality prototype design fully compatible with the final chip specifications for CMS ETL. The ETROC2 chips have been extensively tested and the results have been presented at IEEE NSS MIC RTSD 2024. We will present here new results including the bump bonding yield improvement study, the time walk correction (TWC) generality study with single pixel TWC applied to all pixels, the final SEU testing results using both heavy ion and proton beam, more beam test studies including different sensors and irradiated sensors, and readiness for the ETROC2 production for CMS ETL upgrade.