Abstract
This chapter focuses on the experimental setup of the LHC and the ATLAS experiment. The first part of the chapter introduces the main features that characterize the LHC. The following two sections give a general overview of the different parts of the ATLAS detector and the trigger system. Finally, the last two sections include a brief description of the detector simulation and a summary of the techniques used for object reconstruction, with a special emphasis on jets.
‘Curiouser and curiouser!’ cried Alice (she was so much surprised, that for the moment she quite forgot how to speak good English); ‘now I’m opening out like the largest telescope that ever was!
Good-bye, feet!’
Lewis Carroll, Alice’s Adventures in Wonderland
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- 1.
The centre-of-mass energy in this case is \(2.76~\mathrm {TeV}\) per nucleon.
- 2.
‘Projective’ means in this context that the size of the elements grows proportionally to the distance from the interaction point.
- 3.
If a cluster is not matched with a track, it is classified as an unconverted photon candidate.
- 4.
The ATLAS calorimeter response to electrons is typically 1.3 times higher than the hadron response. This difference is due to energy losses in the hadron case, such as nuclear break-up, spallation and excitation, soft neutrons, neutrinos produced in hadron decays, etc.
- 5.
The noise and constant terms in the resolution contribute at the very low and very high \(\Sigma E_{ \mathrm T}\) regions, respectively.
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Ortuzar, M.C. (2016). The Large Hadron Collider and the ATLAS Experiment. In: High Jet Multiplicity Physics at the LHC. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-43461-2_2
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