Active target-detector with scintillating fibers for hyperon–proton scattering

An active target with scintillating fibers has been developed and constructed. This target-detector is designed for measurements of hyperon–proton scattering for hyperon momenta of several hundredMeV/c. The detector serves as a production target of hyperons as well as a hyperon scattering target on hydrogen. It works as a 4π-detector for the production, scattering, and decay of charged particles in the target region. A spectrometer system for an incident beam and outgoing particles is linked with this target-detector in order to produce triggers for the imaging device. Reactions inside the fiducial volume of the detector are reconstructed kinematically by using image data together with spectrometer information.