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A Possible 1.8 K Refrigeration Cycle for the Large Hadron Collider
The Large Hadron Collider (LHC) under construction at the European Laboratory for Particle Physics, CERN, will make use of superconducting magnets operating below 2.0 K. This requires, for each of the eight future cryogenic installations, an isothermal cooling capacity of up to 2.4 kW obtained by va...
Autores principales: | , , , |
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Lenguaje: | eng |
Publicado: |
1997
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1007/978-1-4757-9047-4_46 http://cds.cern.ch/record/336204 |
_version_ | 1780891311407104000 |
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author | Millet, F Roussel, P Tavian, L Wagner, U |
author_facet | Millet, F Roussel, P Tavian, L Wagner, U |
author_sort | Millet, F |
collection | CERN |
description | The Large Hadron Collider (LHC) under construction at the European Laboratory for Particle Physics, CERN, will make use of superconducting magnets operating below 2.0 K. This requires, for each of the eight future cryogenic installations, an isothermal cooling capacity of up to 2.4 kW obtained by vaporisation of helium II at 1.6 kPa and 1.8 K. The process design for this cooling duty has to satisfy several demands. It has to be adapted to four already existing as well as to four new refrigerators. It must cover a dynamic range of one to three, and it must to allow continuous pump-down from 4.5 K to 1.8 K. A possible solution, as presented in this paper, includes a combination of cold centrifugal and warm volumetric compressors. It is characterised by a low thermal load on the refrigerator, and a large range of adaptability to different operation modes. The expected power factor for 1.8 K cooling is given, and the proposed control strategy is explained. |
id | cern-336204 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 1997 |
record_format | invenio |
spelling | cern-3362042023-05-31T13:23:31Zdoi:10.1007/978-1-4757-9047-4_46http://cds.cern.ch/record/336204engMillet, FRoussel, PTavian, LWagner, UA Possible 1.8 K Refrigeration Cycle for the Large Hadron ColliderAccelerators and Storage RingsThe Large Hadron Collider (LHC) under construction at the European Laboratory for Particle Physics, CERN, will make use of superconducting magnets operating below 2.0 K. This requires, for each of the eight future cryogenic installations, an isothermal cooling capacity of up to 2.4 kW obtained by vaporisation of helium II at 1.6 kPa and 1.8 K. The process design for this cooling duty has to satisfy several demands. It has to be adapted to four already existing as well as to four new refrigerators. It must cover a dynamic range of one to three, and it must to allow continuous pump-down from 4.5 K to 1.8 K. A possible solution, as presented in this paper, includes a combination of cold centrifugal and warm volumetric compressors. It is characterised by a low thermal load on the refrigerator, and a large range of adaptability to different operation modes. The expected power factor for 1.8 K cooling is given, and the proposed control strategy is explained.LHC-Project-Report-140CERN-LHC-Project-Report-140oai:cds.cern.ch:3362041997-09-17 |
spellingShingle | Accelerators and Storage Rings Millet, F Roussel, P Tavian, L Wagner, U A Possible 1.8 K Refrigeration Cycle for the Large Hadron Collider |
title | A Possible 1.8 K Refrigeration Cycle for the Large Hadron Collider |
title_full | A Possible 1.8 K Refrigeration Cycle for the Large Hadron Collider |
title_fullStr | A Possible 1.8 K Refrigeration Cycle for the Large Hadron Collider |
title_full_unstemmed | A Possible 1.8 K Refrigeration Cycle for the Large Hadron Collider |
title_short | A Possible 1.8 K Refrigeration Cycle for the Large Hadron Collider |
title_sort | possible 1.8 k refrigeration cycle for the large hadron collider |
topic | Accelerators and Storage Rings |
url | https://dx.doi.org/10.1007/978-1-4757-9047-4_46 http://cds.cern.ch/record/336204 |
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