Conveners
Calibration & operation
- Bernard Ille (Universite Claude Bernard Lyon I (FR))
Calibration & operation
- Felix Sefkow (Deutsches Elektronen-Synchrotron (DE))
The ATLAS detector was designed and built to study proton-proton collisions produced at the LHC at centre-of-mass energies up to 14 TeV and instantaneous luminosities up to 1034 cm−2 s−1. Liquid argon (LAr) sampling calorimeters are employed for all electromagnetic calorimetry in the pseudo-rapidity region |η| < 3.2, and for hadronic calorimetry in the region from |η| = 1.5 to |η| = 4.9. In...
The final phase of the CMS Hadron Forward Calorimeters Phase I upgrade was performed during the Extended Year End Technical Stop of 2016 – 2017. In the framework of the upgrade, the PMT boxes were reworked to implement two channel readout in order to exploit the benefits of the multi-anode PMTs in background tagging and signal recovery. The front-end electronics were also upgraded to...
The LHCb calorimeter system plays a key role in the hardware trigger of the experiment and also serves the measurement of radiative heavy flavor decays and neutral mesons. Placed 12 meters from the interaction region, the system is composed of four elements: a plane of scintillating tiles followed by a pre-shower detector used for particle identification, a shashlik ECAL and a sampling...
Many physics analyses using the Compact Muon Solenoid (CMS) detector at the LHC require accurate, high resolution electron and photon energy measurements. Particularly important are decays of the Higgs boson resulting in electromagnetic particles in the final state, as well as searches for very high mass resonances decaying to energetic photons or electrons. Following the excellent performance...
In particle physics experiments, the quality of calorimetric particle detection is typically considerably worse for hadrons than
for electromagnetic showers. In this talk, I will discuss the root causes of this
problem and evaluate two different methods that have been exploited to remedy this situation: compensation and dual-readout. It turns out that the latter approach is more promising, as...
The Tile Calorimeter (TileCal) is the hadronic sampling calorimeter of ATLAS experiment at the Large Hadron Collider (LHC). TileCal uses iron absorbers and scintillators as active material and it covers the central region |η| < 1.7. Jointly with the other calorimeters it is designed for measurements of hadrons, jets, tau-particles and missing transverse energy. It also assists in muon...
The calibration of energy scale of the CMS Hadron Calorimeter is performed using isolated charged hadrons. This approach can be applied in the areas covered by the tracking system, which allows high-precision measurement of the momenta of charged particles. The performance of the calibration procedure is discussed including the impact of pileup and the developed technique of correction for...
