Studies of lead tungstate crystal matrices in high energy beams for the CMS electromagnetic calorimeter at the LHC

G. Alexeev , E. Auffray , P. Baillon , D. Barney , G. Bassompierre (1) , E. Bateman , K W. Bell , Y. Benhammou (2) , P. Bloch , D. Bomestar , B. Borgia , J. Bourotte , S. Burge , W. Cameron , R. Chipaux , D. Cockerill , J. Connolly , I. Dafinei , P. Denes , P. Depasse (2) , K. Deiters , L. Dobrzynski , H. El Mamouni (3) , J L. Faure , M. Felcini , M. Finger , T. Flugel , F. Gautheron , A. Givernaud , S. Gninenko , N. Godinovic , D J. Graham , J.P. Guillaud (1) , E. Guschin , M. Haguenauer , H. Hillemanns , H. Hofer , B. Ille (2) , S. Jaaskelainen , V. Katchanov , B. Kennedy , T. Kirn , M. Korzhik , K. Lassila-Perini , M. Lebeau , P. Lebrun (2) , P. Lecoq , G. Lecoeur , P. Lecomte , Emilio Leonardi , R. Loos , D. Ma , F. Martin (2) , J.P. Mendiburu (1) , Y. Musienko , P. Nedelec (1) , F. Nessi-Tedaldi , D. Newbold , H. Newman , M. Oukhanov , L. Pacciani , J.P. Peigneux (1) , S. Pirro , S. Popov , I. Puljak , C. Purves , D. Renker , F. Rondeaux , E. Rosso , R. Rusack , H. Rykaczewski , D. Schmitz , M. Schneegans (1) , J. Schwenke , C. Seez , I. Semeniouk , P. Shagin , S. Shevchenko , X. Shi , D. Sillou (1) , D. Simohand (2) , a V. Singovsky , I. Soric , B. B.N. Smith , R. Stephenson , P. Verrecchia , J.P. Vialle (1) , T S. Virdee , R Y. Zhu

1 LAPP - Laboratoire d'Annecy de Physique des Particules
2 IPNL - Institut de Physique Nucléaire de Lyon
3 CMS

Using matrices of lead tungstate crystals energy resolutions better than 0.6% at 100 GeV have been achieved in the test beam in 1995. It has been demonstrated that a lead tungstate electromagnetic calorimeter read out by avalanche photodiodes can consistently achieve the excellent energy resolutions necessary to justify its construction in the CMS detector. The performance achieved has been understood in terms of the properties of the crystals and photodetectors.

Domaines: Physique des Hautes Energies - Expérience [hep-ex]

G. Alexeev, E. Auffray, P. Baillon, D. Barney, G. Bassompierre, et al.. Studies of lead tungstate crystal matrices in high energy beams for the CMS electromagnetic calorimeter at the LHC. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1997, 385, pp.425-434. ⟨in2p3-00002417⟩