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Experimental results obtained with the simulated cold moderator system. System characteristics and technical issues
The Japan Atomic Energy Research Institute and the High Energy Accelerator Research Organization have been developing a Mega-Watt scale spallation target system. In the system, neutrons generated in a target are sorted out their energy to the proper values in liquid-hydrogen moderators. Then, the li...
Autores principales: | , , , , , |
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Lenguaje: | jpn |
Publicado: |
2002
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Materias: | |
Acceso en línea: | http://cds.cern.ch/record/747718 |
_version_ | 1780904180469202944 |
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author | Aso, T Haga, K Hino, R Kaminaga, M Kinoshita, H Takahashi, T |
author_facet | Aso, T Haga, K Hino, R Kaminaga, M Kinoshita, H Takahashi, T |
author_sort | Aso, T |
collection | CERN |
description | The Japan Atomic Energy Research Institute and the High Energy Accelerator Research Organization have been developing a Mega-Watt scale spallation target system. In the system, neutrons generated in a target are sorted out their energy to the proper values in liquid-hydrogen moderators. Then, the liquid-hydrogen is forced to circulate in order to suppress hydrogen temperature increase. In the operation of moderators, it is very important to establish a safety protection system against emergency shutdown of the accelerator or accidents of the cold moderator system. In order to obtain a technical data for design and safety review of the liquid-hydrogen system, we have fabricated an experimental apparatus simulated the cold moderator system using liquid nitrogen (max. 1.5 MPa, mini. 77 K) instead of liquid hydrogen. The experiments on a controllability of the system were carried out to investigate dynamic characteristics of the system. This report presents the experimental results and technical issues for the construction of a practical liquid-hydrogen moderator system of the Mega-Watt scale target system. |
id | cern-747718 |
institution | Organización Europea para la Investigación Nuclear |
language | jpn |
publishDate | 2002 |
record_format | invenio |
spelling | cern-7477182019-09-30T06:29:59Zhttp://cds.cern.ch/record/747718jpnAso, THaga, KHino, RKaminaga, MKinoshita, HTakahashi, TExperimental results obtained with the simulated cold moderator system. System characteristics and technical issuesAccelerators and Storage RingsThe Japan Atomic Energy Research Institute and the High Energy Accelerator Research Organization have been developing a Mega-Watt scale spallation target system. In the system, neutrons generated in a target are sorted out their energy to the proper values in liquid-hydrogen moderators. Then, the liquid-hydrogen is forced to circulate in order to suppress hydrogen temperature increase. In the operation of moderators, it is very important to establish a safety protection system against emergency shutdown of the accelerator or accidents of the cold moderator system. In order to obtain a technical data for design and safety review of the liquid-hydrogen system, we have fabricated an experimental apparatus simulated the cold moderator system using liquid nitrogen (max. 1.5 MPa, mini. 77 K) instead of liquid hydrogen. The experiments on a controllability of the system were carried out to investigate dynamic characteristics of the system. This report presents the experimental results and technical issues for the construction of a practical liquid-hydrogen moderator system of the Mega-Watt scale target system.JAERI-TECH-2002-096oai:cds.cern.ch:7477182002 |
spellingShingle | Accelerators and Storage Rings Aso, T Haga, K Hino, R Kaminaga, M Kinoshita, H Takahashi, T Experimental results obtained with the simulated cold moderator system. System characteristics and technical issues |
title | Experimental results obtained with the simulated cold moderator system. System characteristics and technical issues |
title_full | Experimental results obtained with the simulated cold moderator system. System characteristics and technical issues |
title_fullStr | Experimental results obtained with the simulated cold moderator system. System characteristics and technical issues |
title_full_unstemmed | Experimental results obtained with the simulated cold moderator system. System characteristics and technical issues |
title_short | Experimental results obtained with the simulated cold moderator system. System characteristics and technical issues |
title_sort | experimental results obtained with the simulated cold moderator system. system characteristics and technical issues |
topic | Accelerators and Storage Rings |
url | http://cds.cern.ch/record/747718 |
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