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In this paper, we present recent results from bunch-shaping experiments using α-BBO crystal at the High Brightness Electron Beam Source Laboratory (HBESL). α-BBO crystals were used to shape the ultra-short laser pulse ( < 100fs) at HBESL to generate twin pulses at the cathode. The twin electron pulses were transported down the linac ( < 5 MeV) to a transverse deflecting mode cavity and the temporal profile recorded on the screen. The longitudinal time profile of the twin pulses show the difference between the effect of crystals and the longitudinal space charge effect. The electron beam was recorded for various position of the crystal and bunch charge.

The new low energy hyperon‐nucleon scattering data have been long waited since the low statistics data were obtained in 1960s from the bubble chamber experiments. At KEK, an experiment to measure ∑++p elastic scattering has been performed utilizing the novel scintillating fiber technology. In this report we present the status of the analysis on this experiment and the preliminary total cross section data of ∑++p scattering.