Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Neutron Facility Group
JAERI-Tech 2004-059, 106 Pages, 2004/10
JAERI-Tech-2004-059.pdf:6.82MB
The Materials and Life Science Facility is being constructed as one of main facilities in the JAERI-KEK High-Intensity Proton Accelerator Project (J-PARC). Various experimental apparatuses will be installed in 1st and 2nd Experimental Halls in the facility building. Neutron and muon beams provided by the facility are to be utilized for experimental research. This manual provides facility-side information that is needed for designing and installing experimental apparatuses, and summarizes specifications of junction points between the facility-side and user-side as of June, 2004.
Honmura, Shiro*; Teraoku, Takuji*; Yoshida, Katsuhiko*; Takada, Hiroshi; Maekawa, Fujio; Kasugai, Yoshimi; Hino, Ryutaro; Watanabe, Noboru; Furusaka, Michihiro
JAERI-Tech 2003-054, 62 Pages, 2003/06
JAERI-Tech-2003-054.pdf:9.53MB
The JAERI and the KEK are jointly on the way of constructing facilities under the High-Intensity Proton Accelerator Project (J-PARC). The Materials and Life Science Facility is one of major facilities comprising a 1MW pulsed neutron source (JSNS). The neutrons are to be utilized for advanced researches in fields of materials and life science, and so on. In designing helium-vessel, it is important to assure structural integrity of the helium-vessel against earthquakes. It is also important to manufacture accurately neutron view ports. In-vessel components need to be replaced by remote handling after a certain period of operation due to radiation damages. To make the replacement steadily and easily, the helium-vessel has to provide suitable support, positioning and sealing structures. This report describes bases and conditions for deigning the helium-vessel, and summarizes basic structural specifications of the helium-vessel which are determined with structure strength and temperature analyses.
Yoshida, Katsuhiko*; Maekawa, Fujio; Takada, Hiroshi
JAERI-Tech 2003-019, 52 Pages, 2003/03
JAERI-Tech-2003-019.pdf:2.89MB
Under the JAERI-KEK High-Intensity Proton Accelerator Project (J-PARC), a spallation neutron source driven by a 3 GeV-1MW proton beam is planed to be constructed as a main part of the Materials and Life Science Facility. Overall dimensions of a biological shield of the neutron source had been determined by evaluation of shielding performance by Monte Carlo calculations. This report describes results of design studies on an optimum dividing scheme in terms of cost and treatment and mechanical strength of shield blocks for the biological shield. As for mechanical strength, it was studied whether the shield blocks would be stable, fall down or move to a horizontal direction in case of an earthquake of seismic intensity of 5.5 (250 Gal) as an abnormal load. For ceiling shielding blocks being supported by both ends of the long blocks, maximum bending moment and an amount of maximum deflection of their center were evaluated.