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Milestone-Proposal:The 20 inch Diameter Photomultiplier Tubes
Milestone Buildings Exist Yes.
Milestone Plaque Mounting Details The plaque will be placed on a plinth of the grounds near the front entrance gate of the Toyooka Factory.
Milestone Present Site Owner HAMAMATSU PHOTONICS K.K.
Milestone Site Access Details The factory is surrounded by a fence, but the front gate is kept open during the daytime. Visitors can go to the plaque site without going through the security during the daytime.
Milestone Site Description The photomultiplier tubes were developed a The photomultiplier tubes were developed and manufactured at the Toyooka Factory, Hamamatsu Photonics, 314-5, Shimokanzo, Iwata City, Shizuoka Prefecture, Japan. Iwata City is in the area covered by the IEEE Nagoya Section. (Iwata City is located next to Hamamatsu City.) a City is located next to Hamamatsu City.)
Milestone Site Owner Approval Yes  +
Milestone proposal submitted true  +
Proposed Milestone IEEE Section IEEE Nagoya Section  +
Proposed Milestone Location The address of the milestone plaque site i The address of the milestone plaque site is: HAMAMATSU PHOTONICS K.K. Electron Tube Division, Toyooka Factory 314-5, Shimokanzo, Iwata City, Shizuoka Prefecture, Japan GPS coordinates: 34 48” 47. 1” N, 137 50” 10. 0” E Milestone Plaque-Replica 1: Kamiokande II Kamioka Observatory, Institute for Cosmic Ray Research Mozumi Mine of the Kamioka Mining and Smelting Co. Hida City, Gufu Prefecture, Japan ting Co. Hida City, Gufu Prefecture, Japan
Proposed Milestone Name 20-inch Diameter Photomultiplier Tubes, 1979 - 1987  +
Proposed Milestone Plaque Citation Hamamatsu Photonics K.K. began developing Hamamatsu Photonics K.K. began developing 20-inch diameter photomultiplier tubes at Toyooka Factory in 1979 for a 3000-ton water-filled Cherenkov particle detector, Kamiokande-II, in response to a request by Professor Masatoshi Koshiba. 1071 PMTs on it collected photons induced in the water by the particles falling on it. Kamiokande-II detected a neutrino burst in the Supernova SN1987A in 1987, earning Professor Koshiba a Nobel Prize in 2002. g Professor Koshiba a Nobel Prize in 2002.
Proposed Milestone Year 1979 - 1987  +
Modification dateThis property is a special property in this wiki. 20 September 2013 12:46:28  +
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