Calibration of the photon spectrometer PHOS of the ALICE experiment

The ALICE Collaboration, S. Acharya, E. J. Brucken, B. Chang, T. E. Hilden, D. J. Kim, V. Litichevskyi, M. M. Mieskolainen, R. Orava, J. E. Parkkila, J. Rak, S. S. Räsänen, S. Saarinen, M. Slupecki, T. W. Snellman, W. H. Trzaska, M. Vargyas, J. Viinikainen

Research output: Contribution to journalArticleScientificpeer-review

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 correction of the absolute energy scale, to obtain the nonlinearity correction coefficients and finally, to calculate the time-dependent calibration corrections, are discussed and illustrated by the PHOS performance in proton-proton (pp) collisions at root s = 13 TeV. After applying all corrections, the achieved mass resolutions for pi(0) and eta mesons for p(T) > 1.7 GeV/c are sigma(pi 0)(m) = 4.56 +/- 0.03 MeV/c(2) and sigma(eta)(m) = 15.3 +/- 1.0 MeV/c(2), respectively.
Original languageEnglish
Article number05025
JournalJournal of Instrumentation
Volume14
Number of pages30
ISSN1748-0221
DOIs
Publication statusPublished - May 2019
MoE publication typeA1 Journal article-refereed

Fields of Science

  • Calorimeters
  • Detector alignment and calibration methods (lasers, sources, particlebeams)
  • PB-PB COLLISIONS
  • PHOTODIODES
  • DETECTOR
  • 114 Physical sciences

Cite this

The ALICE Collaboration, Acharya, S., Brucken, E. J., Chang, B., Hilden, T. E., Kim, D. J., ... Viinikainen, J. (2019). Calibration of the photon spectrometer PHOS of the ALICE experiment. Journal of Instrumentation, 14, [05025]. https://doi.org/10.1088/1748-0221/14/05/P05025
The ALICE Collaboration ; Acharya, S. ; Brucken, E. J. ; Chang, B. ; Hilden, T. E. ; Kim, D. J. ; Litichevskyi, V. ; Mieskolainen, M. M. ; Orava, R. ; Parkkila, J. E. ; Rak, J. ; Räsänen, S. S. ; Saarinen, S. ; Slupecki, M. ; Snellman, T. W. ; Trzaska, W. H. ; Vargyas, M. ; Viinikainen, J. / Calibration of the photon spectrometer PHOS of the ALICE experiment. In: Journal of Instrumentation. 2019 ; Vol. 14.
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title = "Calibration of the photon spectrometer PHOS of the ALICE experiment",
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 correction of the absolute energy scale, to obtain the nonlinearity correction coefficients and finally, to calculate the time-dependent calibration corrections, are discussed and illustrated by the PHOS performance in proton-proton (pp) collisions at root s = 13 TeV. After applying all corrections, the achieved mass resolutions for pi(0) and eta mesons for p(T) > 1.7 GeV/c are sigma(pi 0)(m) = 4.56 +/- 0.03 MeV/c(2) and sigma(eta)(m) = 15.3 +/- 1.0 MeV/c(2), respectively.",
keywords = "Calorimeters, Detector alignment and calibration methods (lasers, sources, particlebeams), PB-PB COLLISIONS, PHOTODIODES, DETECTOR, 114 Physical sciences",
author = "{The ALICE Collaboration} and S. Acharya and Acosta, {F. T.} and D. Adamova and Adhya, {S. P.} and A. Adler and J. Adolfsson and Aggarwal, {M. M.} and Rinella, {G. Aglieri} and M. Agnello and Z. Ahammed and S. Ahmad and Ahn, {S. U.} and S. Aiola and A. Akindinov and M. Al-Turany and Alam, {S. N.} and Albuquerque, {D. S. D.} and D. Aleksandrov and B. Alessandro and Alfanda, {H. M.} and {Alfaro Molina}, R. and B. Ali and Y. Ali and A. Alici and A. Alkin and J. Alme and T. Alt and L. Altenkamper and Altsybeev and Anaam, {M. N.} and C. Andrei and D. Andreou and Andrews, {H. A.} and A. Andronic and M. Angeletti and Anguelov and C. Anson and Brucken, {E. J.} and B. Chang and Hilden, {T. E.} and Kim, {D. J.} and V. Litichevskyi and Mieskolainen, {M. M.} and R. Orava and Parkkila, {J. E.} and J. Rak and R{\"a}s{\"a}nen, {S. S.} and S. Saarinen and M. Slupecki and Snellman, {T. W.} and Trzaska, {W. H.} and M. Vargyas and J. Viinikainen",
year = "2019",
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language = "English",
volume = "14",
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The ALICE Collaboration, Acharya, S, Brucken, EJ, Chang, B, Hilden, TE, Kim, DJ, Litichevskyi, V, Mieskolainen, MM, Orava, R, Parkkila, JE, Rak, J, Räsänen, SS, Saarinen, S, Slupecki, M, Snellman, TW, Trzaska, WH, Vargyas, M & Viinikainen, J 2019, 'Calibration of the photon spectrometer PHOS of the ALICE experiment', Journal of Instrumentation, vol. 14, 05025. https://doi.org/10.1088/1748-0221/14/05/P05025

Calibration of the photon spectrometer PHOS of the ALICE experiment. / The ALICE Collaboration; Acharya, S.; Brucken, E. J.; Chang, B.; Hilden, T. E.; Kim, D. J.; Litichevskyi, V.; Mieskolainen, M. M.; Orava, R.; Parkkila, J. E.; Rak, J.; Räsänen, S. S.; Saarinen, S.; Slupecki, M.; Snellman, T. W.; Trzaska, W. H.; Vargyas, M.; Viinikainen, J.

In: Journal of Instrumentation, Vol. 14, 05025, 05.2019.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Calibration of the photon spectrometer PHOS of the ALICE experiment

AU - The ALICE Collaboration

AU - Acharya, S.

AU - Acosta, F. T.

AU - Adamova, D.

AU - Adhya, S. P.

AU - Adler, A.

AU - Adolfsson, J.

AU - Aggarwal, M. M.

AU - Rinella, G. Aglieri

AU - Agnello, M.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Aiola, S.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

AU - Albuquerque, D. S. D.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Alfaro Molina, R.

AU - Ali, B.

AU - Ali, Y.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altenkamper, L.

AU - Altsybeev, null

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andreou, D.

AU - Andrews, H. A.

AU - Andronic, A.

AU - Angeletti, M.

AU - Anguelov, null

AU - Anson, C.

AU - Brucken, E. J.

AU - Chang, B.

AU - Hilden, T. E.

AU - Kim, D. J.

AU - Litichevskyi, V.

AU - Mieskolainen, M. M.

AU - Orava, R.

AU - Parkkila, J. E.

AU - Rak, J.

AU - Räsänen, S. S.

AU - Saarinen, S.

AU - Slupecki, M.

AU - Snellman, T. W.

AU - Trzaska, W. H.

AU - Vargyas, M.

AU - Viinikainen, J.

PY - 2019/5

Y1 - 2019/5

N2 - 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 correction of the absolute energy scale, to obtain the nonlinearity correction coefficients and finally, to calculate the time-dependent calibration corrections, are discussed and illustrated by the PHOS performance in proton-proton (pp) collisions at root s = 13 TeV. After applying all corrections, the achieved mass resolutions for pi(0) and eta mesons for p(T) > 1.7 GeV/c are sigma(pi 0)(m) = 4.56 +/- 0.03 MeV/c(2) and sigma(eta)(m) = 15.3 +/- 1.0 MeV/c(2), respectively.

AB - 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 correction of the absolute energy scale, to obtain the nonlinearity correction coefficients and finally, to calculate the time-dependent calibration corrections, are discussed and illustrated by the PHOS performance in proton-proton (pp) collisions at root s = 13 TeV. After applying all corrections, the achieved mass resolutions for pi(0) and eta mesons for p(T) > 1.7 GeV/c are sigma(pi 0)(m) = 4.56 +/- 0.03 MeV/c(2) and sigma(eta)(m) = 15.3 +/- 1.0 MeV/c(2), respectively.

KW - Calorimeters

KW - Detector alignment and calibration methods (lasers, sources, particlebeams)

KW - PB-PB COLLISIONS

KW - PHOTODIODES

KW - DETECTOR

KW - 114 Physical sciences

U2 - 10.1088/1748-0221/14/05/P05025

DO - 10.1088/1748-0221/14/05/P05025

M3 - Article

VL - 14

JO - Journal of Instrumentation

JF - Journal of Instrumentation

SN - 1748-0221

M1 - 05025

ER -