  Recent results on the particle detector R&D for new accelerators are
reviewed. Different approaches for the muon systems, hadronic and
electromagnetic calorimeters, particle identification devices, and central
trackers are discussed. Main emphasis is made on the detectors for the
International Linear Collider and Super B-factory. A detailed description of a
novel photodetector, a so called Silicon Photomultiplier, and its applications
in scintillator detectors is presented.
