The PIBETA spectrometer for studying rare and forbidden decays of muons and pions

V. A. Baranov, V. A. Kalinnikov, V. V. Karpukhin, N. V. Khomutov, A. S. Korenchenko, S. M. Korenchenko, N. P. Kravchuk, N. A. Kuchinskii, D. A. Mzhaviya, A. M. Rozhdestvenskii, V. V. Sidorkin, Z. B. Tsamalaidze, T. Sakhelashvili, E. Frlež, D. Počanić, W. Li, R. C. Minehart, L. C. Smith, W. A. Stephens, K. O H ZiockW. Bertl, R. Horisberger, S. Ritt, R. Schnyder, H. P. Wirtz, Barry Ritchie, I. Supek, T. Kozlowski

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The construction and characteristics of the PIBETA spectrometer are described. This spectrometer is designed to implement a program of precise measurement of pion β decay π+ → π0 + e + + νe at the Paul Scherrer Institute (Switzerland). A spherical calorimeter, consisting of 240 crystals of pure CsI scintillator and embracing a solid angle of ∼3π, is the main detector of the setup. In addition, the spectrometer is composed of an active collimator (which also acts as a beam degrader), a segmented active plastic target, two multiwire cylindrical proportional chambers, a 20-element cylindrical plastic hodoscope, and veto counters of cosmic muons.

Original languageEnglish (US)
Pages (from-to)168-176
Number of pages9
JournalInstruments and Experimental Techniques
Issue number2
StatePublished - Mar 2005

ASJC Scopus subject areas

  • Instrumentation


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