Response of the CALICE Si-W electromagnetic calorimeter physics prototype to electrons

C. Adloff (1) , Y. Karyotakis (1) , J. Repond , J. Yu , G. Eigen , C.M. Hawkes , Y. Mikami , O. Miller , N.K. Watson , J.A. Wilson , T. Goto , G. Mavromanolakis , M.A. Thomson , D.R. Ward , W. Yan , D. Benchekroun , A. Hoummada , M. Krim , M. Benyamna (2) , D. Boumediene (2) , N. Brun (2) , C. Cârloganu (2) , Pascal Gay (2) , F. Morisseau (2) , G.C. Blazey , D. Chakraborty , A. Dyshkant , K. Francis , D. Hedin , G. Lima , V. Zutshi , J.Y. Hostachy (3) , L. Morin (3) , N. d'Ascenzo , U. Cornett , D. David , R. Fabbri , G. Falley , K. Gadow , E. Garutti , P. Göttlicher , T. Jung , S. Karstensen , V. Korbel , A.-I. Lucaci-Timoce , B. Lutz , N. Meyer , V. Morgunov , M. Reinecke , F. Sefkow , P. Smirnov , A. Vargas-Trevino , N. Wattimena , O. Wendt , N. Feege , M. Groll , J. Haller , R.-D. Heuer , S. Richter , J. Samson , A. Kaplan , H.-Ch. Schultz-Coulon , W. Shen , A. Tadday , B. Bilki , E. Norbeck , Y. Onel , E.J. Kim , N.I. Baek , D.-W. Kim , K. Lee , S.C. Lee , K. Kawagoe , Y. Tamura , D.A. Bowerman , P.D. Dauncey , A.-M. Magnan , H. Yilmaz , O. Zorba , V. Bartsch , M. Postranecky , M. Warren , M. Wing , M. Fauccigiannelli , M.G. Green , F. Salvatore , M. Bedjidian , R. Kieffer , I. Laktineh , D.S. Bailey , R.J. Barlow , M. Kelly , R.J. Thompson , M. Danilov , E. Tarkovsky , N. Baranova , D. Karmanov , M. Korolev , M. Merkin , A. Voronin , A. Frey , S. Lu , K. Prothmann , F. Simon , B. Bouquet (4) , S. Callier (4) , P. Cornebise (4) , J. Fleury (4) , H. Li (4) , F. Richard (4) , C. de La Taille (4) , R. Poeschl (4) , L. Raux (4) , M. Ruan (4) , N. Seguin-Moreau (4) , F. Wicek (4) , M. Anduze (5) , V. Boudry (5) , J.-C. Brient (5) , G. Gaycken (5) , P. Moraefreitas (5) , G. Musat (5) , M. Reinhard (5) , J.C. Vanel (5) , H. Videau (5) , K.-H. Park , J. Zacek , J. Cvach , P. Gallus , M. Havranek , M. Janata , M. Marcisovsky , I. Polak , J. Popule , L. Tomasek , M. Tomasek , P. Ruzicka , P. Sicho , J. Smolik , V. Vrba , J. Zalesak , B. Belhorma , M. Belmir , S.W. Nam , I.H. Park , J. Yang , J.-S. Chai , J.-T. Kim , G.-B. Kim , J. Kang , Y.-J. Kwon

1 LAPP - Laboratoire d'Annecy de Physique des Particules
2 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
3 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
4 LAL - Laboratoire de l'Accélérateur Linéaire
5 LLR - Laboratoire Leprince-Ringuet

A prototype Silicon-Tungsten electromagnetic calorimeter (ECAL) for an International Linear Collider (ILC) detector was installed and tested during summer and autumn 2006 at CERN. The detector had 6480 silicon pads of dimension 1x1 cm^2. Data were collected with electron beams in the energy range 6 to 45 GeV. The analysis described in this paper focuses on electromagnetic shower reconstruction and characterises the ECAL response to electrons in terms of energy resolution and linearity. The detector is linear to within approximately the 1% level and has a relative energy resolution of (16.6 +- 0.1)/ \sqrt{E(GeV}) + 1.1 +- 0.1 (%). The spatial uniformity and the time stability of the ECAL are also addressed.

Mots clés: CALICE; ILC; Electromagnetic calorimeter; Silicon detector; Electron reconstruction

Domaines: Instrumentations et Détecteurs [physics.ins-det]; Physique des accélérateurs [physics.acc-ph]

C. Adloff, Y. Karyotakis, J. Repond, J. Yu, G. Eigen, et al.. Response of the CALICE Si-W electromagnetic calorimeter physics prototype to electrons. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2009, 608, pp.372-383. ⟨10.1016/j.nima.2009.07.026⟩. ⟨in2p3-00413406⟩