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Elsevier, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1-2(321), p. 69-108

DOI: 10.1016/0168-9002(92)90379-i

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The crystal barrel spectrometer at LEAR

Journal article published in 1992 by E. Aker, C. Amsler, I. Augustin, C. A. Baker, B. M. Barnett, C. J. Batty, R. Beckmann, P. Birien, J. Bistirlich, P. Blüm, R. Bossingham, H. Bossy, K. Braune, D. V. Bugg, M. Burchell ORCID and other authors.
This paper is available in a repository.
This paper is available in a repository.

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Abstract

The crystal Barrel spectrometer used at LEAR, CERN to study the products of pd annihilations is described. A 1380 element array of Csl crystals measures photons from the decay of pi0, eta, eta' and omega mesons. A segmented drift chamber in a 1.5T magnetic field is used to identify and measure charged particles. A fast on-line trigger on charged and neutral multiplicities and on the invariant mass of secondary particles is available. The performance of the detector is discussed.