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SiΛvio: A trigger for Λ-hyperons

  • Robert Münzer
  • , Martin Berger
  • , Laura Fabbietti
  • , R. Averbeck
  • , A. Andronic
  • , V. Barret
  • , Z. Basrak
  • , N. Bastid
  • , M. L. Benabderrahmane
  • , P. Buehler
  • , M. Cargnelli
  • , R. Čaplar
  • , I. Carevic
  • , V. Charviakova
  • , P. Crochet
  • , I. Deppner
  • , P. Dupieux
  • , M. Dželalija
  • , Z. Fodor
  • , P. Gasik
  • I. Gašparić, Y. Grishkin, O. N. Hartmann, N. Herrmann, K. D. Hildenbrand, B. Hong, T. I. Kang, J. Kecskemeti, Y. J. Kim, M. Kirejczyk, M. Kiš, P. Koczon, R. Kotte, A. Lebedev, Y. Leifels, J. L. Liu, X. Lopez, V. Manko, J. Marton, T. Matulewicz, M. Petrovici, K. Piasecki, F. Rami, A. Reischl, W. Reisdorf, M. S. Ryu, P. Schmidt, A. Schüttauf, Z. Seres, B. Sikora, K. S. Sim, V. Simion, K. Siwek-Wilczyńska, V. Smolyankin, K. Suzuki, Z. Tyminski, P. Wagner, E. Widmann, K. Wiśniewski, Z. G. Xiao, T. Yamazaki, I. Yushmanov, X. Y. Zhang, A. Zhilin, V. Zinyuk, J. Zmeskal

Research output: Contribution to journalArticlepeer-review

Abstract

As online trigger for events containing Λ hyperons in p+p collisions at 3.1 GeV a silicon-based device has been designed and built. This system has been integrated close to the target region within the FOPI spectrometer at GSI and was also employed as a tracking device to improve the vertex reconstruction of secondary decays. The design of the detector components, read-out, the trigger capability as well as the tracking performance are presented. An enrichment factor of about 14 was achieved for events containing a Λ-hyperon candidate.

Original languageEnglish
Pages (from-to)38-49
Number of pages12
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume745
DOIs
StatePublished - 1 May 2014
Externally publishedYes

Keywords

  • APV25
  • MIPS
  • Mesytec
  • Silicon
  • Trigger
  • Λ

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