FOPI detector for heavy-ion collision experiment at SIS/GSI

Min Sang Ryu, Byungsik Hong, Tae Im Kang

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    The heavy-ion synchrotron (SIS) at GSI in Germany can accelerate various ions up to 2A GeV. The FOPI detector, the dedicated hadron spectrometer system, has been run in SIS for the last twenty years. The FOPI detector covers almost a full solid angle with two drift chambers and three scintillation counter arrays. The FOPI detector was recently fortified by a new time-of-flight (TOF) detector system that consists of the multi-strip multi-gap resistive plate chambers (MMRPCs). The intrinsic time resolution of the new TOF detector is less than 60 ps, and the improved time measurement in conjunction with the drift chamber information enables us to identify charged hadrons up to an unprecedented high momentum range. For example, the positive kaons can be identified up to 1.1 GeV/c, which is crucial to determining the in-medium effect of strange hadrons in dense matter. In this paper, we introduce the FOPI detector with emphasis on the new TOF system.

    Original languageEnglish
    Pages (from-to)1605-1608
    Number of pages4
    JournalJournal of the Korean Physical Society
    Volume59
    Issue number23
    DOIs
    Publication statusPublished - 2011 Aug

    Keywords

    • FOPI
    • Heavy-ion collision
    • Resistive plate chamber
    • SIS
    • Time of flight

    ASJC Scopus subject areas

    • General Physics and Astronomy

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