The major upgrade of the MAGIC telescopes, Part II: A performance study using observations of the Crab Nebula

Ansoldi, S.; Antonelli, L. A.; Antoranz, P.; Babic, A.; Bangale, P.; Barcelo, M.; Barrio, J. A.; Gonzalez, J. Becerra; Becerra González, J.; Bednarek, W.; Magic, Collaboration; Bernardini, E.; Biasuzzi, B.; Biland, A.; Bitossi, M.; Blanch, O.; Bonnefoy, S.; Bonnoli, G.; Borracci, F.; Bretzl, T.; Bretz, T.; Carmona, E.; Carosi, A.; Cecchi, R.; Colin, P.; Colombo, E.; Contreras, J. L.; Corti, D.; Cortina, J.; Covino, S.; Da Vela, P.; Dazzi, F.; De Angelis, A.; De Caneva, G.; De Lotto, B.; de Oña Wilhelmi, E.; Wilhelmi, E. de Ona; Delgado Mendez, C.; Mendez, C. Delgado; Dettlaff, A.; Dominis Prester, D.; Dorner, D.; Prester, D. Dominis; Doro, M.; Einecke, S.; Eisenacher, D.; Aleksic, J.; Elsaesser, D.; Fidalgo, D.; Fink, D.; Fonseca, M. V.; Font, L.; Frantzen, K.; Fruck, C.; Galindo, D.; Garcia Lopez, R. J.; García López, R. J.; Garczarczyk, M.; Garrido Terrats, D.; Gaug, M.; Giavitto, G.; Lopez, R. J. Garcia; Godinovic, N.; González Muñoz, A.; Gozzini, S. R.; Haberer, W.; Hadasch, D.; Hanabata, Y.; Terrats, D. Garrido; Hayashida, M.; Herrera, J.; Hildebrand, D.; Hose, J.; Hrupec, D.; Idec, W.; Illa, J. M.; Kadenius, V.; Kellermann, H.; Munoz, A. Gonzalez; Knoetig, M. L.; Kodani, K.; Konno, Y.; Krause, J.; Kubo, H.; Kushida, J.; La Barbera, A.; Lelas, D.; Lemus, J. L.; Lewandowska, N.; Lindfors, E.; Lombardi, S.; Longo, F.; López, M.; López-Coto, R.; Lopez, M.; López-Oramas, A.; Lorca, A.; Lorenz, E.; Lozano, I.; Makariev, M.; Lopez-Oramas, A.; Mallot, K.; Maneva, G.; Mankuzhiyil, N.; Mannheim, K.; Maraschi, L.; Marcote, B.; Lopez-Coto, R.; Mariotti, M.; Martinez, M.; Mazin, D.; Menzel, U.; Miranda, J. M.; Mirzoyan, R.; Moralejo, A.; Munar-Adrover, P.; Nakajima, D.; Paredes i. Poy, Josep Maria; Negrello, M.; Neustroev, V.; Niedzwiecki, A.; Nilsson, K.; Nishijima, K.; Noda, K.; Orito, R.; Overkemping, A.; Paiano, S.; Palatiello, M.; Paneque, D.; Paoletti, R.; Paredes, J. M.; Paredes-Fortuny, Xavier; Persic, M.; Poutanen, J.; Prada Moroni, P. G.; Moroni, P. G. Prada; Prandini, E.; Puljak, I.; Reinthal, R.; Rhode, W.; Ribo, M.; Rico, J.; Rodriguez Garcia, J.; Ruegamer, S.; Rugamer, S.; Saito, T.; Saito, K.; Satalecka, K.; Garcia, J. Rodriguez; Scalzotto, V.; Scapin, V.; Schultz, C.; Schlammer, J.; Schmidl, S.; Schweizer, T.; Shore, S. N.; Sillanpaa, A.; Sitarek, J.; Snidaric, I.; Sobczynska, D.; Spanier, F.; Stamerra, A.; Steinbring, T.; Spanier, E.; Storz, J.; Strzys, M.; Takalo, L.; Takami, H.; Tavecchio, F.; Tejedor, L. A.; Temnikov, P.; Terzic, T.; Tescaro, D.; Teshima, M.; Thaele, J.; Tibolla, O.; Torres, D. F.; Toyama, T.; Treves, A.; Vogler, P.; Wetteskind, H.; Will, M.; Zanin, Roberta; Aleksi\textquoterightc, J. And Ansoldi S And Bernardini E And Mirzoyan R And Moralejo A And Munar-Adrover P And Nakajima D And Negrello M And Neustroev V And Niedzwiecki A And Nilsson K And Nishijima K And Noda K And Biasuzzi B And Orito R And Overkemping A And Paiano S And Palat

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Elsevier, Astroparticle Physics, (72), p. 76-94

DOI: 10.1016/j.astropartphys.2015.02.005

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The major upgrade of the MAGIC telescopes, Part II: A performance study using observations of the Crab Nebula

Journal article published in 2014 by S. Ansoldi, L. A. Antonelli

, P. Antoranz, A. Babic, P. Bangale, M. Barcelo, J. A. Barrio

, J. Becerra Gonzalez, J. Becerra González

, W. Bednarek, Collaboration Magic, E. Bernardini

, B. Biasuzzi, A. Biland, M. Bitossi and other authors.

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Abstract

MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes located in the Canary island of La Palma, Spain. During summer 2011 and 2012 it underwent a series of upgrades, involving the exchange of the MAGIC-I camera and its trigger system, as well as the upgrade of the readout system of both telescopes. We use observations of the Crab Nebula taken at low and medium zenith angles to assess the key performance parameters of the MAGIC stereo system. For low zenith angle observations, the standard trigger threshold of the MAGIC telescopes is similar to 50 GeV. The integral sensitivity for point-like sources with Crab Nebula-like spectrum above 220 GeV is (0.66 +/- 0.03)% of Crab Nebula flux in 50 h of observations. The angular resolution, defined as the a of a 2-dimensional Gaussian distribution, at those energies is less than or similar to 0.07 degrees, while the energy resolution is 16%. We also re-evaluate the effect of the systematic uncertainty on the data taken with the MAGIC telescopes after the upgrade. We estimate that the systematic uncertainties can be divided in the following components:

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The major upgrade of the MAGIC telescopes, Part II: A performance study using observations of the Crab Nebula

Abstract