Reconstruction of the signal amplitude of the CMS electromagnetic calorimeter

Adžić, P.; Alemany–Fernández, R.; Almeida, C.; Almeida, N.; Anagnostou, G.; Anfreville, M.; Aničin, I.; Antunović, Ž.; Auffray, E.; Baccaro, S.; Baffioni, S.; Barney, D.; Barone, L.; Barrillon, Stéphanie; Bartoloni, Alessandro; Beauceron, S.; Beaudette, F.; Bell, K. W.; Benetta, R.; Bercher, M.; Berthon, U.; Betev, B. L.; Beuselinck, R.; Bhardwaj, A.; Biino, C.; Bimbot, S.; Blaha, J.; Bloch, P.; Blyth, S.; Bordalo, P.; Bornheim, A.; Bourotte, J.; Britton, D.; Brown, R. M.; Brunelière, R.; Busson, P.; Camporesi, T.; Cartiglia, N.; Cavallari, F.; Cerutti, M.; Chamont, D.; Chang, P.; Chang, Y. H.; Charlot, C.; Chatterji, S.; Chen, E.A.; Chipaux, R.; Choudhary, B. C.; Cockerill, D. J. A.; Collard, C.; Combaret, C.; Cossutti, F.; Costantini, S.; Silva, José Carlos da; Dafinei, I.; Daskalakis, G.; Davatz, G.; Debraine, A.; Decotigny, D.; Min, A. De; Deiters, K.; Déjardin, M.; Negra, R. Della; Ricca, G. Della; Depasse, P.; Descamp, J.; Dewhirst, G.; Dhawan, S.; Diemoz, M.; Dissertori, G.; Dittmar, M.; Djambazov, L.; Dobrzyński, L.; Drndarevic, S.; Dupanloup, M.; Dželalija, M.; Ehlers, J.; Mamouni, H. El; Elliott-Peisert, A.; Evangelou, I.; Fabbro, B.; Faure, J. L.; Fay, J.; Ferri, F.; Flower, P.; Franzoni, G.; Funk, W.; Gaillac, A.; Gargiulo, C.; Shotkin, S. Gascon; Geerebaert, Y.; Gentit, F. X.; Ghezzi, A.; Gilly, J.; Giolo-Nicollerat, A. S.; Givernaud, A.; Gninenko, S.; Go, Alan S.; Godinović, N.; Голубев, Н.; Golutvin, I.; Gómez-Reino, R.; Govoni, P.; Grahl, J.; Gras, P.; Greenhalgh, J.; Guillaud, J.P.; Haguenauer, M.; Hamel-de-Montechenault, G.; Hansen, Maxwell T.; Heath, H. F.; Hill, John; Hobson, P. R.; Holmes, D.; Holzner, A.; Hou, George Wei-Shu; Ille, B.; Ingram, Q.; Jain, Ambar; Jarry, P.; Jauffret, Claude; Jha, M. K.; Karar,; Kataria, S. K.; Katchanov, V.A.; Kennedy, B. W.; Kloukinas, K.; Kokkas, P.; Korjik, M.; Krasnikov, N.; Krpić, D.; Kyriakis, A.; Lebeau, M.; Lecomte, P.; Lecoq, P.; Lemaire, M. C.; Lethuillier, M.; Lin, W.; Lintern, A.L.; Lister, A.; Litvin, V.; Locci, E.; Lodge, A. B.; Longo, E.; Loukas, D.; Luckey, D.; Lustermann, W.; Lynch, C.; Mackay, C. K.; Malberti, M.; Maletić, D.; Mandjavidze, I.; Manthos, N.; Μάρκου, Α.; Mathez, H.; Mathieu, A.; Matveev, V.; Maurelli, G.; Menichetti, E.; Meridiani, P.; Milenović, P.; Milleret, G.; Miné, P.; Mur, Marieke; Musienko, Y.; Nardulli, A.; Nash, J.; Neal, H.; Nédélec, P.; Negri, P.; Nessi‐Tedaldi, F.; Newman, H. B.; Nikitenko, A.; Obertino, M. M.; Ofierzynski, R. A.; Organtini, G.; Paganini, P.; Paganoni, M.; Papadopoulos, I.; Paramatti, R.; Pastrone, N.; Pauß, F.; Poilleux, P.; Puljak, I.; Pullia, A.; Puzović, J.; Ragazzi, S.; Ramos, S.; Rahatlou, S.; Rander, J.; Ranjan, K.; Ravat, O.; Raymond, M.; Razis, P. A.; Redaelli, N.; Renker, D.; Reucroft, S.; Reymond, J. M.; Reynaud, Michel; Reynaud, Serge; Romanteau, T.; Rondeaux, F.; Rosowsky, A.; Rovelli, C.; Rusack, R.; Rusakov, S. V.; Ryan, M. J.; Rykaczewski, H.; Sakhelashvili, T.; Salerno, R.; Santos, M.B.; Seez, C.; Semeniouk, I.; Sharif, Omar; Sharp, Phillip A.; Shepherd-Themistocleous, C. H.; Shevchenko, S.; Shivpuri, R. K.; Sidiropoulos, G.; Sillou, D.; Singovski, A.; Sirois, Y.; Sirunyan, A. M.; Smith, Brett; Smith, V. J.; Sproston, M.; Suter, H.; Swain, J.; Fatis, T. Tabarelli de; Takahashi, Masashi; Tapper, R. J.; Tcheremoukhine, A.; Teixeira, I.C.; Teixeira, J.P.; Teller, O.; Timlin, C.; Triantis, F. A.; Troshin, S.; Tyurin, N.; Ueno, K.; Uzunian, A.; Varela, J.; Cardoso, N.; Verrecchia, P.; Vichoudis, P.; Viganò, S.; Viertel, G.; Virdee, T.; Wang, M.-Z.; Weinstein, A. J.R.; Williams, J. H.; Yaselli, I.; Zabi, A.; Zamiatin, N.; Zelepoukine, S.; Zeller, M.; Zhang, L.Y.; Zhang, Y.; Zhu, K.; Zhu, R. Y.

doi:10.1140/epjcd/s2006-02-002-x

Cited by 47 publications

(41 citation statements)

References 6 publications

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“…The observed noise levels in EB and EE during CRAFT are consistent with the values measured during module construction (see, for comparison, Table 1 of Ref. [11] for EB noise measurements obtained with test beam data using the "3+5 weight" method), and meet the MGPA design specifications [5]. For the barrel, the average value of the noise in energy equivalent units corresponds to roughly 40 MeV/channel (APD G50).…”

Section: A Electronic Noisesupporting

confidence: 80%

Commissioning and operation of the CMS electromagnetic calorimeter

Petyt

2009

2009 IEEE Nuclear Science Symposium Conference Record (NSS/MIC)

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The operation and general performance of the CMS electromagnetic calorimeter using cosmic-ray muons recorded after the closure of CMS in late 2008 are described. The overall status of the 75,848 channels corresponding to the crystal barrel and endcap detectors is reported. The stability of crucial operational parameters, such as high voltage, temperature and electronic noise, is summarised and the performance of the light monitoring system is presented. The status of the barrel, endcap and preshower detectors following additional cosmic-ray muon tests in 2009 is also summarised.

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Section: A Electronic Noisesupporting

confidence: 80%

Commissioning and operation of the CMS electromagnetic calorimeter

Petyt

2009

2009 IEEE Nuclear Science Symposium Conference Record (NSS/MIC)

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“…A fit to this model with binned templates extracted periodically from runs with only one bunch circulating in either LHC beam gives the pulse amplitude A i for each channel i above threshold [2].…”

Section: Energy Reconstructionmentioning

confidence: 99%

Performance of the CMS electromagnetic calorimeter in Run II and its role in the measurement of the Higgs boson properties

Organtini¹

2017

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2017)

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The characterisation of the Higgs boson discovered in 2012 around 125 GeV, and confirmed with the data collected in Run II, requires the precise determination of its mass, width and couplings. The electromagnetic calorimeter (ECAL) of the Compact Muon Solenoid Experiment (CMS) is crucial for measurements in the highest resolution channels, H → γγ and H → 4 leptons. In particular the energy resolution, the scale uncertainty and the position resolution for electrons and photons are required to be as good as possible. During Run II the LHC is continuously operating with 25 ns bunch spacing and increasing instantaneous luminosity. The calorimeter reconstruction algorithm has been adapted to cope with increasing levels of pile-up and the calibration and monitoring strategy have been optimised to maintain the excellent performance of the CMS ECAL throughout Run II. We show first performance results from the Run II data taking periods, achieved through energy calibrations using physics events, with a special emphasis on the impact on the measurement of the properties of the Higgs boson and on searches for new physics.

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“…w j is computed using a "3+5 pedestal-subtracting weights" method, optimized for noise reduction [5].…”

Section: Amplitude Reconstructionmentioning

confidence: 99%

Precision electromagnetic calorimetry at the energy frontier: The CMS ECAL at the LHC Run 2

Marzocchi¹

2016

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2015)

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The Large Hadron Collider (LHC) has recently restarted operations (Run 2) with proton-proton collisions at an unprecedented centre-of-mass energy of 13 TeV and is moving to a reduced bunch spacing of 25 ns. After the successful quest for a Higgs boson via its electromagnetic decays, and the subsequent measurement of its mass, the CMS electromagnetic calorimeter (ECAL) plans to perform precision measurements and searches for new physics phenomena beyond the standard model with the data that are being collected. In this poster we present new reconstruction algorithms and calibration strategies that aim to maintain, and even improve, the excellent performance of the CMS ECAL under the new challenging experimental conditions. The CMS ECAL is a high-resolution, hermetic, and homogeneous electromagnetic calorimeter made of 75,848 scintillating lead tungstate crystals. Its resolution, as well as its timing performance, are valuable tools for the discovery of new physics with the CMS detector at the LHC. The performance of the calorimeter relies on precision calibration maintained over time, despite severe irradiation conditions. A set of intercalibration procedures using different physics channels is carried out at regular intervals to normalize the differences in crystal light transparency and photodetector response between channels, which can change due to accumulated radiation.

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Reconstruction of the signal amplitude of the CMS electromagnetic calorimeter

Cited by 47 publications

References 6 publications

Commissioning and operation of the CMS electromagnetic calorimeter

Commissioning and operation of the CMS electromagnetic calorimeter

Performance of the CMS electromagnetic calorimeter in Run II and its role in the measurement of the Higgs boson properties

Precision electromagnetic calorimetry at the energy frontier: The CMS ECAL at the LHC Run 2

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