Tests of Local Hadron Calibration Approaches in ATLAS Combined Beam Tests

• Three ATLAS calorimeters in the region of the forward crack at vertical bar eta vertical bar = 3.2 in the nominal ATLAS setup and a typical section of the two barrel calorimeters at vertical bar eta vertical bar = 0.45 of ATLAS have been exposed to combined beam tests with single electrons and pions. Detailed shower shape studies of electrons and pions with comparisons to various Geant4 based simulations utilizing different physics lists are presented for the endcap beam test. The local hadron calibration approach as used in the full Atlas setup has been applied to the endcap beam test data. An extension of it using layer correlations has been tested with the barrel test beam data. Both methods utilize modular correction steps based on shower shape variables to correct for invisible energy inside the reconstructed clusters in the calorimeters (compensation) and for lost energy deposits outside of the reconstructed clusters (dead material and out-of-cluster deposits). Results for both methods and comparisons to Monte Carlo simulations are presented.

Ämnesord

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Nyckelord

Barrel calorimeter

Beam tests

Energy deposits

Monte Carlo Simulation

Shape variable

Single electron

Test beam

Publikations- och innehållstyp

ref (ämneskategori)

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