  A large-acceptance spectrometer, Neutral Kaon Spectrometer 2 (NKS2), was
newly constructed to explore various photoproduction reactions in the
gigaelectronvolt region at the Laboratory of Nuclear Science (LNS, currently
ELPH), Tohoku University. The spectrometer consisted of a dipole magnet, drift
chambers, and plastic scintillation counters. NKS2 was designed to separate
pions and protons in a momentum range of less than 1 GeV/$c$, and was placed in
a tagged photon beamline. A cryogenic H$_{2}$/D$_{2}$ target fitted to the
spectrometer were designed. The design and performance of the detectors are
described. The results of the NKS2 experiment on analyzing strangeness
photoproduction data using a 0.8--1.1 GeV tagged photon beam are also
presented.
