scholarly journals Present Status of the Materials & Life Science Experimental Facility of J-PARC

2015 ◽  
Author(s):  
Masatoshi Arai ◽  
Masatoshi Futakawa ◽  
Hiroshi Takada ◽  
Katsuhiro Haga ◽  
Shin-ichiro Meigo ◽  
...  
Keyword(s):  
Present Status ◽  
Life Science ◽  
Experimental Facility

Active Mass Auto-Balancing System for Centrifuge Rotor Providing an Artificial Gravity in Space

2001 ◽  
Author(s):  
Koichi Ohtomi ◽  
Fumio Otsuki ◽  
Hirohiko Uematsu ◽  
Yasuhiro Nakamura ◽  
Yuichi Chida ◽  
...  
Keyword(s):  
International Space Station ◽  
Centrifugal Force ◽  
Life Science ◽  
Space Station ◽  
Artificial Gravity ◽  
Experimental Facility ◽  
Test Results ◽  
Active Mass ◽  
International Space ◽  
Centrifuge Rotor

Abstract The Centrifuge Rotor (CR) is an artificial gravity generator, which is aiming at launch in 2006 as a portion of the life science experimental facility of the International Space Station (ISS). The CR rotates habitats located radially around the axis and generates centrifugal force, imposing artificial gravity of arbitrary magnitude up to 22.0 m/s2 (about 2.2 g) on the specimens housed in the habitats. The imbalance is caused by the asymmetry of two habitats opposite each other, which brings about change in the mass of the habitats as well as the quasi-static change of the CG of plants and fluids and the dynamic rodent motions in the habitats. The active mass Auto-Balancing System (ABS) is provided for automatic canceling of the above-mentioned imbalance of the rotor. This paper presents the concept and the test results of the ABS.

Rapid Measurement of Texture of Metals by Time-of-Flight Neutron Diffraction at iMATERIA and its Applications

2016 ◽  
Vol 879 ◽  
pp. 1426-1430 ◽  
Author(s):  
Yusuke Onuki ◽  
Akinori Hoshikawa ◽  
Shigeo Sato ◽  
Toru Ishigaki
Keyword(s):  
Neutron Diffraction ◽  
Measurement System ◽  
Life Science ◽  
Time Of Flight ◽  
Incident Beam ◽  
High Flux ◽  
Experimental Facility ◽  
Texture Measurement ◽  
Rapid Measurement ◽  
Time Of Flight Method

The authors have developed the texture measurement system at iMATERIA, which is the neutron diffractometers built in Materials and Life Science Experimental Facility (MLF) at J-PARC, Japan. The high flux of the incident beam and Time-Of-Flight method enabled the complete texture measurement within several minutes in case of steels. Since the neutron beam can transmit most of the materials, the measured texture represents the state of whole exposed volume. The multi-histogram analysis also enables to determine phase fractions in a multiphase material as well as the texture of each phase.

Development status of the general control system of the Material and Life Science Experimental Facility (MLF) of J-PARC

2006 ◽  
Vol 385-386 ◽  
pp. 1324-1326 ◽  
Author(s):  
K. Sakai ◽  
H. Kinoshita ◽  
T. Kai ◽  
M. Ooi ◽  
M. Kaminaga ◽  
...  
Keyword(s):  
Control System ◽  
Life Science ◽  
Experimental Facility ◽  
General Control ◽  
Development Status

scholarly journals Neutron capture and total cross-section measurements of 155Gd and 157Gd at ANNRI in J-PARC

2020 ◽  
Vol 239 ◽  
pp. 01012
Author(s):  
Atsushi Kimura ◽  
Shoji Nakamura ◽  
Osamu Iwamoto ◽  
Nobuyuki Iwamoto ◽  
Hideo Harada ◽  
...  
Keyword(s):  
Cross Sections ◽  
Neutron Capture ◽  
Life Science ◽  
Measurement Instrument ◽  
Proton Accelerator ◽  
Experimental Facility ◽  
Total Cross Sections ◽  
Neutron Time ◽  
Time Of Flight Method ◽  
Glass Detectors

Neutron capture and total cross sections of 155Gd and 157Gd were measured with the neutron time-of-flight method in Accurate Neutron-Nucleus Reaction measurement Instrument at Material and Life Science Experimental Facility of the Japan Proton Accelerator Research Complex using the NaI (Tl) spectrometer and Li-glass detectors. Preliminary cross sections were obtained in the neutron energy region from 4 meV to 100 meV. The derived cross sections agree with evaluated values in JENDL 4.0 and the experimental results by Mastromarco but were not consistent with those by Leinweber.

PRESENT STATUS OF J-PARC HADRON EXPERIMENTAL FACILITY

2010 ◽  
Vol 19 (12) ◽  
pp. 2663-2670
Author(s):  
Y. Sato ◽  
K. Agari ◽  
E. Hirose ◽  
M. Ieiri ◽  
Y. Katoh ◽  
...  
Keyword(s):  
Present Status ◽  
Nuclear Physics ◽  
Beam Line ◽  
Primary Beam ◽  
Radiation Environment ◽  
Current Status ◽  
Secondary Beam ◽  
Experimental Facility ◽  
Secondary Particles ◽  
Physics Experiments

J-PARC Hadron Experimental Facility is designed to carry out a variety of particle and nuclear physics experiments with intense secondary particles generated by 750 kW proton beams. The first construction stage including the experimental hall, the primary beam line, and one secondary beam line (K1.8BR) has been completed at the end of December 2008. In order to handle the high intensity primary beam safely, we have developed many special devices working under severe radiation environment. The present article reports the current status of the Hadron Experimental Facility in detail.

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