Conveners
B1: LHC Detectors: Operational experience
- Maksym Titov (CEA Saclay Irfu)
The tracking performance of the ATLAS detector relies critically on its 4-layer Pixel Detector. As the closest detector component to the interaction point, this detector is subjected to a significant amount of radiation over its lifetime. At the start of the LHC proton-proton collision RUN3 in 2022, the innermost layer IBL, consisting of planar and 3D pixel sensors, had received an integrated...
The LHCb experiment has been upgraded during the second long shutdown
of the Large Hadron Collider at CERN, and the new detector is currently
operating at the LHC. The Vertex Locator (VELO) is the detector
surrounding the interaction region of the LHCb experiment, responsible of
reconstructing the proton-proton collision (primary vertices) as well as
the decay vertices of long-lived...
The inner tracker of CMS is the largest silicon tracker ever built with 1856 pixel and 15148 strip detector modules that provide accurate track reconstruction. To achieve high precision in measurements of the momenta of charged particles, corrections for the position, rotation and curvature of these modules must be found; such a procedure is known as tracker alignment. Magnet cycles,...
The ATLAS SemiConductor Tracker (SCT) restarted operations in LHC Run-3. The SCT successfully operated in LHC Run-2 (2015-2018) which came with high instantaneous luminosity and pileup conditions that were far in excess of what the SCT was originally designed tomeet. The first significant effects of radiation damage in the SCT were alsoobserved during Run-2. The operation condition of SCT...
LHCb has undergone a major upgrade during LHC LS2 (2019-2022) to cope with increased instantaneous luminosities and a 40 MHz read-out with a full software-based trigger and real-time analysis to improve on many world-best physics measurements. A light and homogeneous tracking detector based on plastic scintillating fibres has been installed downstream of the LHCb dipole magnet.
The...
The ATLAS level-1 calorimeter trigger is a custom-built hardware system
that identifies events containing calorimeter-based physics objects,
including electrons, photons, taus, jets, and missing transverse energy.
In Run 3, L1Calo has been upgraded to process higher granularity
input data. The new trigger, currently running in parallel with the
legacy system, comprises several...
