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

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 resolution...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 1997-02, Vol.385 (3), p.425-434
Main Authors: Alexeev, G, Auffray, E, Baillon, P, Barney, D, Bassompierre, G, Bateman, E, Bell, K.W, Benhammou, Y, Bloch, P, Bomestar, D, Borgia, B, Bourotte, J, Burge, S, Cameron, W, Chipaux, R, Cockerill, D, Connolly, J, Dafinei, I, Denes, P, Depasse, P, Deiters, K, Dobrzynski, L, El Mamouni, H, Faure, J.L, Felcini, M, Finger, M, Flügel, T, Gautheron, F, Givernaud, A, Gninenko, S, Godinovic, N, Graham, D.J, Guillaud, J.P, Guschin, E, Haguenauer, M, Hillemanns, H, Hofer, H, Ille, B, Jaaskelainen, S, Katchanov, V, Kennedy, B, Kirn, T, Korzhik, M, Lassila-Perini, K, Lebeau, M, Lebrun, P, Lecoq, P, Lecoeur, G, Lecomte, P, Leonardi, E, Locci, E, Loos, R, Ma, D, Martin, F, Mendiburu, J.P, Musienko, Y, Nedelec, P, Nessi-Tedaldi, F, Newbold, D, Newman, H, Oukhanov, M, Pacciani, L, Peigneux, J.P, Pirro, S, Popov, S, Puljak, I, Purves, C, Renker, D, Rondeaux, F, Rosso, E, Rusack, R, Rykaczewski, H, Schmitz, D, Schneegans, M, Schwenke, J, Seez, C, Semeniouk, I, Shagin, P, Shevchenko, S, Shi, X, Sillou, D, Simohand, D, Singovsky, A, Soric, I, Smith, B, Stephenson, R, Verrecchia, P, Vialle, J.P, Virdee, T.S, Zhu, R.Y
Format: Article
Language:English
Subjects:
APD
CMS
Crystal
ECAL
Electromagnetic calorimeter
Energy resolution
High Energy Physics - Experiment
Lead tungstate
Physics
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Summary: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.
ISSN:0168-9002
1872-9576
DOI:10.1016/S0168-9002(96)01030-3