Hiroshi Takahash

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The Polarized Gamma-ray Observer - Lightweight version (PoGOLite) is a new balloon experiment capable of detecting 10% polarization from a 200 mCrab source in the 25-80 keV energy range in a single 6-hour flight for the first time. Polarization measurements of hard X-rays and soft gamma-rays are expected to provide a powerful probe into high-energy emission(More)
Collective Thomson scattering (CTS) system has been constructed at LHD making use of the high power electron cyclotron resonance heating (ECRH) system in Large Helical Device (LHD). The necessary features for CTS, high power probing beams and receiving beams, both with well defined Gaussian profile and with the fine controllability, are endowed in the ECRH(More)
To provide the design parameter of muon-muon collider, the production of positive pions in a protoninduced reaction at 14.6 GeV/c on Al and Cu, and the negative pions from the 6 inch thick target of Al and Cu measured by using the Alternating Gradient Synchrotron (AGS), were analyzed using the nuclear cascade model code Lahet. INTRODUCTION In recent years,(More)
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