Reconstruction of signal amplitudes in the CMS electromagnetic calorimeter in the presence of overlapping proton-proton interactions

The CMS Collaboration

doi:10.1088/1748-0221/15/10/P10002

Reconstruction of signal amplitudes in the CMS electromagnetic calorimeter in the presence of overlapping proton-proton interactions

The CMS Collaboration

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

A template fitting technique for reconstructing the amplitude of signals produced by the lead tungstate crystals of the CMS electromagnetic calorimeter is described. This novel approach is designed to suppress the contribution to the signal of the increased number of out-of-time interactions per beam crossing following the reduction of the accelerator bunch spacing from 50 to 25 ns at the start of Run 2 of the LHC. Execution of the algorithm is sufficiently fast for it to be employed in the CMS high-level trigger. It is also used in the offline event reconstruction. Results obtained from simulations and from Run 2 collision data (2015–2018) demonstrate a substantial improvement in the energy resolution of the calorimeter over a range of energies extending from a few GeV to several tens of GeV.

Original language	English
Article number	P10002
Journal	Journal of Instrumentation
Volume	15
Issue number	10
DOIs	https://doi.org/10.1088/1748-0221/15/10/P10002
Publication status	Published - 2020 Oct

Bibliographical note

Publisher Copyright:
© 2020 CERN for the benefit of the CMS collaboration.

Keywords

Calibration
Cluster finding
Fitting methods
Large detector-systems performance
Pattern recognition

ASJC Scopus subject areas

Instrumentation
Mathematical Physics

Access to Document

10.1088/1748-0221/15/10/P10002

Cite this

@article{9cf56d9e0d904dcb8652c5bb10b8faed,

title = "Reconstruction of signal amplitudes in the CMS electromagnetic calorimeter in the presence of overlapping proton-proton interactions",

abstract = "A template fitting technique for reconstructing the amplitude of signals produced by the lead tungstate crystals of the CMS electromagnetic calorimeter is described. This novel approach is designed to suppress the contribution to the signal of the increased number of out-of-time interactions per beam crossing following the reduction of the accelerator bunch spacing from 50 to 25 ns at the start of Run 2 of the LHC. Execution of the algorithm is sufficiently fast for it to be employed in the CMS high-level trigger. It is also used in the offline event reconstruction. Results obtained from simulations and from Run 2 collision data (2015–2018) demonstrate a substantial improvement in the energy resolution of the calorimeter over a range of energies extending from a few GeV to several tens of GeV.",

keywords = "Calibration, Cluster finding, Fitting methods, Large detector-systems performance, Pattern recognition",

author = "{The CMS Collaboration} and Sirunyan, {A. M.} and A. Tumasyan and W. Adam and F. Ambrogi and T. Bergauer and M. Dragicevic and J. Er{\"o} and {Escalante Del Valle}, A. and R. Fr{\"u}hwirth and M. Jeitler and N. Krammer and L. Lechner and D. Liko and T. Madlener and I. Mikulec and Pitters, {F. M.} and N. Rad and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and S. Templ and W. Waltenberger and Wulz, {C. E.} and M. Zarucki and V. Chekhovsky and A. Litomin and V. Makarenko and {Suarez Gonzalez}, J. and Darwish, {M. R.} and {De Wolf}, {E. A.} and {Di Croce}, D. and X. Janssen and T. Kello and A. Lelek and M. Pieters and {Rejeb Sfar}, H. and {Van Haevermaet}, H. and {Van Mechelen}, P. and {Van Putte}, S. and {Van Remortel}, N. and F. Blekman and Bols, {E. S.} and Chhibra, {S. S.} and J. D'Hondt and {De Clercq}, J. and D. Lontkovskyi and S. Choi and B. Hong and Park, {S. K.} and J. Yoo",

note = "Publisher Copyright: {\textcopyright} 2020 CERN for the benefit of the CMS collaboration.",

year = "2020",

month = oct,

doi = "10.1088/1748-0221/15/10/P10002",

language = "English",

volume = "15",

journal = "Journal of Instrumentation",

issn = "1748-0221",

publisher = "Institute of Physics",

number = "10",

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TY - JOUR

T1 - Reconstruction of signal amplitudes in the CMS electromagnetic calorimeter in the presence of overlapping proton-proton interactions

AU - The CMS Collaboration

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Ambrogi, F.

AU - Bergauer, T.

AU - Dragicevic, M.

AU - Erö, J.

AU - Escalante Del Valle, A.

AU - Frühwirth, R.

AU - Jeitler, M.

AU - Krammer, N.

AU - Lechner, L.

AU - Liko, D.

AU - Madlener, T.

AU - Mikulec, I.

AU - Pitters, F. M.

AU - Rad, N.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Spanring, M.

AU - Templ, S.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Chekhovsky, V.

AU - Litomin, A.

AU - Makarenko, V.

AU - Suarez Gonzalez, J.

AU - Darwish, M. R.

AU - De Wolf, E. A.

AU - Di Croce, D.

AU - Janssen, X.

AU - Kello, T.

AU - Lelek, A.

AU - Pieters, M.

AU - Rejeb Sfar, H.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Van Putte, S.

AU - Van Remortel, N.

AU - Blekman, F.

AU - Bols, E. S.

AU - Chhibra, S. S.

AU - D'Hondt, J.

AU - De Clercq, J.

AU - Lontkovskyi, D.

AU - Choi, S.

AU - Hong, B.

AU - Park, S. K.

AU - Yoo, J.

PY - 2020/10

Y1 - 2020/10

N2 - A template fitting technique for reconstructing the amplitude of signals produced by the lead tungstate crystals of the CMS electromagnetic calorimeter is described. This novel approach is designed to suppress the contribution to the signal of the increased number of out-of-time interactions per beam crossing following the reduction of the accelerator bunch spacing from 50 to 25 ns at the start of Run 2 of the LHC. Execution of the algorithm is sufficiently fast for it to be employed in the CMS high-level trigger. It is also used in the offline event reconstruction. Results obtained from simulations and from Run 2 collision data (2015–2018) demonstrate a substantial improvement in the energy resolution of the calorimeter over a range of energies extending from a few GeV to several tens of GeV.

AB - A template fitting technique for reconstructing the amplitude of signals produced by the lead tungstate crystals of the CMS electromagnetic calorimeter is described. This novel approach is designed to suppress the contribution to the signal of the increased number of out-of-time interactions per beam crossing following the reduction of the accelerator bunch spacing from 50 to 25 ns at the start of Run 2 of the LHC. Execution of the algorithm is sufficiently fast for it to be employed in the CMS high-level trigger. It is also used in the offline event reconstruction. Results obtained from simulations and from Run 2 collision data (2015–2018) demonstrate a substantial improvement in the energy resolution of the calorimeter over a range of energies extending from a few GeV to several tens of GeV.

KW - Calibration

KW - Cluster finding

KW - Fitting methods

KW - Large detector-systems performance

KW - Pattern recognition

UR - http://www.scopus.com/inward/record.url?scp=85096494444&partnerID=8YFLogxK

U2 - 10.1088/1748-0221/15/10/P10002

DO - 10.1088/1748-0221/15/10/P10002

M3 - Article

AN - SCOPUS:85096494444

SN - 1748-0221

VL - 15

JO - Journal of Instrumentation

JF - Journal of Instrumentation

IS - 10

M1 - P10002

ER -

Reconstruction of signal amplitudes in the CMS electromagnetic calorimeter in the presence of overlapping proton-proton interactions

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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