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The Belle II detector is an upcoming general-purpose spectrometer at the upgraded accelerator complex SuperKEKB at KEK in Tsukuba, Japan. The Belle II detector consists of several sub-detector components: * Two layers of pixelated silicon sensors (PXD) and four layers of double-sided silicon strip sensors (SVD) that measure decay vertex positions of B mesons and other particles, * A central drift chamber (CDC) that measures trajectories, momenta and dE/dx information of charged particles, * A barrel-shaped array of Time-Of-Propagation (TOP) counters that reconstruct, in spacial and time coordinates, the ring-image of Cherenkov light cones emitted from charged particles passing through quartz radiator bars, another ring-imaging Cherenkov counters with aerogel radiator in the forward end-cap (ARICH), * An electromagnetic calorimeter (ECL) consisting of scintillator crystals located inside a superconducting solenoid coil that provides a 1.5 Tesla magnetic field, and * An iron flux-return located outside of the coil which is instrumented to detect K0L mesons and to identify muons (KLM). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Belle II Detector」の詳細全文を読む スポンサード リンク
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