ATLAS Detector Upgrades focusing on Liquid Argon calorimeter plans

par Dr Carolina Gabaldon Ruiz (CNRS/LPSC)

lundi 24 févr. 2014, 14:30 → 15:30 Europe/Paris

9109 (Dpt. de Physique)

In 2011 and 2012 the ATLAS detector successfully recorded collision data from the Large Hadron Collider (LHC) at center-of-mass energies of 7 and 8 TeV. Currently the LHC is shutdown while preparing the machine to go to the nominal 13-14 TeV center-of-mass energy. Afterwards, additional LHC shutdowns are planned to prepare for High Luminosity LHC (HL-LHC) which foresees increasing the instantaneous luminosity to 3-7 times the original design value of 10^34 cm-2 s-1. Significant upgrades are planned for the ATLAS detector and its electronics to accommodate running already beyond the nominal luminosity during this decade (~2019). The challenge of coping with HL-LHC instantaneous and integrated luminosity, along with the associated radiation levels, requires major changes to the ATLAS detector (~2023). This talk will focus on the upgrade program for the ATLAS LAr calorimeter trigger and the various electronics components to be developed for this complex system. The R&D activities as well as architectural and performance studies undertaken by the ATLAS LAr Calorimeter group will be described. A key component of this new system will be the high performance analog digital converter (ADC) for which several options are currently being considered. One of the options for the high performance ADC consists in a Successive Approximation Register (SAR) will be presented in this seminar.