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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...

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Detalles Bibliográficos
Autores principales: Aso, T, Haga, K, Hino, R, Kaminaga, M, Kinoshita, H, Takahashi, T
Lenguaje:jpn
Publicado: 2002
Materias:
Acceso en línea:http://cds.cern.ch/record/747718
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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
work_keys_str_mv AT asot experimentalresultsobtainedwiththesimulatedcoldmoderatorsystemsystemcharacteristicsandtechnicalissues
AT hagak experimentalresultsobtainedwiththesimulatedcoldmoderatorsystemsystemcharacteristicsandtechnicalissues
AT hinor experimentalresultsobtainedwiththesimulatedcoldmoderatorsystemsystemcharacteristicsandtechnicalissues
AT kaminagam experimentalresultsobtainedwiththesimulatedcoldmoderatorsystemsystemcharacteristicsandtechnicalissues
AT kinoshitah experimentalresultsobtainedwiththesimulatedcoldmoderatorsystemsystemcharacteristicsandtechnicalissues
AT takahashit experimentalresultsobtainedwiththesimulatedcoldmoderatorsystemsystemcharacteristicsandtechnicalissues