Distillation of Liquid Xenon to Remove Krypton (2008)
Abe, K., Hosaka, J., Iida, T., Ikeda, M., Kobayashi, K., Koshio, Y., ...
A high performance distillation system to remove krypton from xenon was constructed, and a purity level of Kr/Xe = $\sim 3 \times 10^{-12}$ was achieved. This development is crucial in facilitating...
Application of Hamamatsu MPPC to T2K Neutrino Detectors (2008)
Yokoyama, M., Nakaya, T., Gomi, S., Minamino, A., Nagai, N., Nitta, K., ...
A special type of Hamamatsu MPPC, with a sensitive area of 1.3x1.3mm^2 containing 667 pixels with 50x50um^2 each, has been developed for the near neutrino detector in the T2K long baseline neutrino...
Mass production test of Hamamatsu MPPC for T2K neutrino oscillation experiment (2008)
Yokoyama, M., Nakaya, T., Gomi, S., Minamino, A., Nagai, N., Nitta, K., ...
In the T2K near neutrino detectors, about 60 000 Hamamatsu Multi-Pixel Photon Counters (MPPCs) will be used. The mass production of MPPC has started in February 2008.In order to perform quality...
Scintillation yield of liquid xenon at room temperature (2008)
Ueshima, K., Abe, K., Iida, T., Ikeda, M., Kobayashi, K., Koshio, Y., ...
The intensity of scintillation light emission from liquid xenon at room temperature was measured. The scintillation light yield at 1 deg. was measured to be 0.64 +/- 0.02 (stat.) +/- 0.06 (sys.) of...
Guillian, G., Hosaka, J., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., ...
The relative sidereal variation in the arrival direction of primary cosmic ray nuclei of median energy 10 TeV was measured using downward, through-going muons detected with the Super-Kamiokande-I...
Deuteron and Anti-deuteron Production in $e^+ e^-$ Collisions at the Z Resonance (2006)
Schael, S, Aubert, B, Zalipska, J, Yoshida, M, Yoo, J, Yokoyama, M, ...
Deuteron and anti-deuteron production in Z decays has been observed in the ALEPH experiment at LEP. The production rate of anti-deuterons is measured to be 5.9+-1.8+-0.5 10^-6 per hadronic Z decay in...