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Tests of lead tungstate crystal matrices carried out in high-energy electron beams in 1996, using new crystals, new APDs and an improved test set-up, confirm that an energy resolution of better than 0.6% at 100 GeV can be obtained when the longitudinal uniformity of the struck crystal is adequate. Light loss measurements under low dose irradiation are(More)
The CMS crystal calorimeter, comprising about 80,000 scintillating lead tungstate crystals read out by avalanche photodiodes (in the barrel) and vacuum phototriodes (in the endcap), is designed to give excellent energy resolution in the demanding LHC environment. It is now entering the construction phase. A status report on the project is presented,(More)
Performance tests of some aspects of the CMS ECAL were carried out on modules of the “barrel” sub-system in 2002 and 2003. A brief test with high energy electron beams was made in late 2003 to validate prototypes of the new Very Front End electronics. The final versions of the monitoring and cooling systems, and of the high and low voltage regulation were(More)
We present results on efficiency and time resolution of a resistive plate chamber operating at low gas amplification. The measurements were done within the programme of the RD5 experiment at CERN with a pion beam of flux 0.1-3 .9 kHz/cm2. 0168-9002/95/$09 .50 C 1995 Elsevier Science B.V. All rights reserved SSDI 0168-9002(94)00828-0 2. Experimental lay-out(More)
C. Albajar a, M.G. Albrow b, O.C. Allkofer c,l, K. Ankoviak d, R. Apsimon b, B. Aubert e, C. Bacci f, S. Bartha c, G. Bauer g, A. Bettini h, A. Bezaguet a, p. Biddulph i, H. Bohn c, A. B6hrer J, R. Bonino ", K. Bos k, M. Botlo a, D. Brockhausen ~, C. Buchanan d, B. Buschbeck ~, G. Busetto h, A. Caner h, p. Casoli h, H. Castilla-Valdez d, F. Cavanna e, p.(More)
  • C . Albajar, M . Andlinger, +86 authors P . Zotto
  • 1995
The total punchthrough probability of showers produced by negative pions, positive pions, positive kaons and protons, has been measured as a function of depth in an absorber in a magnetic field ranging from 0 to 3 Tesla. The incident particle momentum varied from 10 to 300 GeV/c. The lateral shower development and particle multiplicity at several absorber(More)
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