The procedure for the energy calibration of the high granularity electromagnetic calorimeter PHOS of the ALICE experiment is presented. The methods used to perform the relative gain calibration, to evaluate the geometrical alignment and the corresponding correc- tion of the absolute energy scale, to obtain the nonlinearity correction coe cients and finally, to calculate the time-dependent calibration corrections, are discussed and illustrated by the PHOS performance in proton-proton (pp) collisions at ps = 13 TeV. After applying all corrections, the achieved mass resolutions for ⇡0 and ⌘ mesons for p > 1.7 GeV/c are ⇡0 = 4.56 ± 0.03 MeV/c2

Calibration of the photon spectrometer PHOS of the ALICE experiment

Barioglio L.;Beole S.;Bianchi L.;Botta E.;Ferretti A.;Gagliardi M.;Masera M.;Puccio M.;Trogolo S.;Vercellin E.;
2019-01-01

Abstract

The procedure for the energy calibration of the high granularity electromagnetic calorimeter PHOS of the ALICE experiment is presented. The methods used to perform the relative gain calibration, to evaluate the geometrical alignment and the corresponding correc- tion of the absolute energy scale, to obtain the nonlinearity correction coe cients and finally, to calculate the time-dependent calibration corrections, are discussed and illustrated by the PHOS performance in proton-proton (pp) collisions at ps = 13 TeV. After applying all corrections, the achieved mass resolutions for ⇡0 and ⌘ mesons for p > 1.7 GeV/c are ⇡0 = 4.56 ± 0.03 MeV/c2
2019
14
5
P05025
P05025
Calorimeters; Detector alignment and calibration methods (lasers, sources, particlebeams)
Acharya S.; Acosta F.T.; Adamova D.; Adhya S.P.; Adler A.; Adolfsson J.; Aggarwal M.M.; Rinella G.A.; Agnello M.; Ahammed Z.; Ahmad S.; Ahn S.U.; Aiol...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1710770
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