Speaker
Description
The forthcoming High Luminosity upgrade of the CERN Large Hadron Collider (HL-LHC) promises to deliver unprecedented levels of instantaneous and integrated luminosity. This enhancement will be accompanied by a substantial increase in the average number of proton-proton interactions per bunch crossing, reaching approximately 200. In response to these formidable challenges, the CMS detector is undergoing an extensive Phase-2 upgrade, which encompasses significant improvements to the electromagnetic calorimeter (ECAL). While novel detector modules will be deployed in the endcap regions, the ECAL barrel’s lead tungstate crystals and associated photodetectors will be able to endure the elevated radiation and operational demands. Nonetheless, the entire readout and trigger electronics infrastructure must be fully revamped to satisfy the stringent performance requirements imposed by the HL-LHC environment and the increased trigger latency. Each of the 61,200 ECAL barrel crystals will be equipped with two ASICs: one dedicated to signal amplification across dual gain settings, and another—a 160 MHz sampling rate Analog-to-Digital Converter (ADC) featuring lossless data compression—to facilitate the transmission of channel data to off-detector electronics. Trigger primitive generation, supported by advanced reconstruction algorithms and a novel data acquisition system, will be performed on high-performance FPGA-based processor boards. These upgrades are critical for maintaining the detector’s exceptional energy resolution and for markedly enhancing the timing precision for electrons and photons with energies exceeding 30 GeV, achieving resolutions on the order of a few tens of picoseconds. This presentation will elucidate the design rationale and current status of the individual components comprising the upgraded ECAL barrel detector. It will also highlight the outcomes of recent tests conducted during beam campaigns at CERN SPS, where a prototype full readout chain was employed to evaluate energy and time resolution. Furthermore, the discussion will underscore the anticipated impact of these advancements on physics analysis in the CMS research program.
Details
Federica De Riggi, Sapienza Universita e INFN, Roma I (IT)
| Internet talk | No |
|---|---|
| Is this an abstract from experimental collaboration? | Yes |
| Name of experiment and experimental site | CMS |
| Is the speaker for that presentation defined? | Yes |
