Toshiya Sanami

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An irradiation field of high-energy neutrons produced in the forward direction from a thick tungsten target bombarded by 500 MeV protons was arranged at the KENS spallation neutron source facility. In this facility, shielding experiment was performed with an ordinary concrete shield of 4 m thickness assembled in the irradiation room, 2.5 m downstream from(More)
Japan Atomic Energy Agency, 2-4, Shirakata Shirane, Tokai-mura, Ibaraki 319-1195, Japan High Energy Accelerator Research Organization, 1-1, Oho, Tsukuba, Ibaraki 305-0801, Japan Kyoto University Research Reactor Institute, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan Fermi National Accelerator Laboratory, Fermilab, Batavia, IL 60510-5011, USA Tohoku(More)
For determination of W, an average energy to produce an ion pair, in gases at atmospheric pressures for heavy ions, an apparatus consisting of a particle-energy degrader, an ionization chamber and a time-of-flight energy spectrometer was constructed, where two types of pulse operation modes in an ionization chamber were employed. Using heavy-ion beams from(More)
For the experimental determination of an average energy to produce an ion pair in gases, W, by heavy ions from accelerators, an apparatus consisting of a particle-energy degrader, an ionization chamber, and a time-of-flight (TOF) energy spectrometer was designed and constructed, where two types of pulse operation modes in an ionization chamber were(More)
The JSNS, a spallation neutron source of J-PARC (JAERI-KEK Joint Project of the High Intensity Proton Accelerator) has 23 neutron beam lines. In the present study, a database was formulated for an optimum shielding design using the MCNP-X code. The calculations involved two steps. In the first step, the neutron distributions were created in the typical(More)
A simulation technique was developed for the extrapolation technique in 4πβ-γ coincidence counting method. Simultaneous emissions of β and γ rays were calculated using EGS5 code to obtain coincidence counting between both β and γ channels. The simulated extrapolation curves were compared with experimental data obtained with (134)Cs measurements using a(More)
We have been studying transfer of a luminescence origin from helium to xenon by adding a small amount of xenon to helium. In this study, the time profiles of scintillation in the mixture were measured, and those were measured using a PMT sensitive to photons with wavelength of 115-300 nm. The time profiles depend on not only the xenon pressure but also the(More)
The Linac Coherent Light Source at the SLAC National Accelerator Laboratory (operated by Stanford University for the US Department of Energy) is the world’s first hard X-ray Free Electron Laser machine. It uses high energy electrons delivered by a linac to create ultrafast and brilliant X-ray pulses that can be used as a ‘highspeed’ camera to obtain images(More)
The determination of W, an average energy to produce an ion pair, for heavy ions in gases at atmospheric pressures has been made using heavy-ion beams from an accelerator. The values of W were measured for He<sup>2&#x002B;</sup> and C<sup>6&#x002B;</sup> (&#x003C; 6 MeV/n) in propane-base tissue-equivalent gases of the pressures of 500 to 760 Torr as a(More)