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Honda, Ryotaro; Callier, S.*; Hasegawa, Shoichi; Ieiri, Masaharu*; Matsumoto, Yuki*; Miwa, Koji*; Nakamura, Isamu*; Raux, L.*; De La Taille, C.*; Tanaka, Manobu*; et al.
Nuclear Instruments and Methods in Physics Research A, 695, p.206 - 209, 2012/12
Times Cited Count：3 Percentile：23.32(Instruments & Instrumentation)For the J-PARC E40 experiment which aims to measure differential cross-sections of Sp scatterings, a system to detect scattered proton from Sp scatterings is under development. The detection system consists of scintillation fibers with a MPPC readout. A prototype and a readout electronics for MPPC have already been developed. The prototype consisting of a scintillation fiber tracker and a BGO calorimeter was tested with a proton beam of 80 MeV. Energy resolutions of the tracker of 22.0% (s) and the calorimeter of 1.0% (s) were obtained for 1 MeV and 70 MeV energy deposit, respectively. The prototype readout electronics has an ASIC for multichannel operation, EASIROC, and a Silicon TCP (SiTCP) interface to communicate with a DAQ system. Its data transfer rate measured was 14 kHz. Required performances for the prototype system have been achieved except for the energy resolution of the prototype fiber tracker.
Hanaki, Shotaro; Morita, Sakura; Maruyama, Shumpei; Hojo, Yuki; Nagahama, Aoi; Kudo, Isamu; Sato, Junya; Tabata, Koichi; Soejima, Goro; Nakamura, Yasuyuki
no journal, ,
Waste packages are needed to satisfy the waste acceptance criteria (WAC) set by the landfill site. To produce sound waste packages that meet such criteria as uniaxial compressive strength and porosity, it is necessary to establish the range of parameters such as mixing time, rotation speed of mixing blade, and amount of cement. This presentation reports on the Beaker scale cold test conducted to determine the cement-to-waste ratio (C/W) which affects the number of waste packages produced and uniaxial compressive strength.
Morita, Sakura; Hanaki, Shotaro; Maruyama, Shumpei; Hojo, Yuki; Nagahama, Aoi; Kudo, Isamu; Soejima, Goro; Nakamura, Yasuyuki; Kuroki, Ryoichiro
no journal, ,
The concentrated liquid waste of Fugen (ATR) is planned to be mixed and solidified using a cement mixing and solidification unit. In this facility, the concentrated liquid waste and cement as the solidification material, are mixed in the mixer and then filled into drums as the disposal containers, to produce a homogeneous and uniform waste package. The facility is being installed onsite with plans to begin service in 2026. This presentation reports on the overview of the solidification facilities and plans for putting it into service.
