Measurements of the Resistance of Main Circuit Busbar Segments at the LHC at Warm

Following the QPS review in February 2009, a potential source of problems with the main circuit bus bar splices was identified: discontinuity in the copper stabilizer, coupled with lack of contact of the superconducting cable to the copper, in the vicinity of a splice. A campaign was launched to mea...

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Detalles Bibliográficos
Autores principales: Koratzinos, M, Bertinelli, F, Flora, R H, Pfeffer, H, Scheuerlein, C, Siemko, A, Strait, J
Lenguaje:eng
Publicado: 2010
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1288291
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author Koratzinos, M
Bertinelli, F
Flora, R H
Pfeffer, H
Scheuerlein, C
Siemko, A
Strait, J
author_facet Koratzinos, M
Bertinelli, F
Flora, R H
Pfeffer, H
Scheuerlein, C
Siemko, A
Strait, J
author_sort Koratzinos, M
collection CERN
description Following the QPS review in February 2009, a potential source of problems with the main circuit bus bar splices was identified: discontinuity in the copper stabilizer, coupled with lack of contact of the superconducting cable to the copper, in the vicinity of a splice. A campaign was launched to measure all such cases in the LHC. Non-invasive measurements were performed at room temperature or at about 80K in all sectors. A number of splices, following an indication obtained from these measurements, were opened and repaired. The resistance of these splices was also measured before and after the repair. We here present the results of this measuring campaign, together with the analysis that estimates the highest splice resistance left in the machine, which is a limiting factor to the maximum safe energy at which the LHC can operate
id cern-1288291
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2010
record_format invenio
spelling cern-12882912019-09-30T06:29:59Zhttp://cds.cern.ch/record/1288291engKoratzinos, MBertinelli, FFlora, R HPfeffer, HScheuerlein, CSiemko, AStrait, JMeasurements of the Resistance of Main Circuit Busbar Segments at the LHC at WarmAccelerators and Storage RingsFollowing the QPS review in February 2009, a potential source of problems with the main circuit bus bar splices was identified: discontinuity in the copper stabilizer, coupled with lack of contact of the superconducting cable to the copper, in the vicinity of a splice. A campaign was launched to measure all such cases in the LHC. Non-invasive measurements were performed at room temperature or at about 80K in all sectors. A number of splices, following an indication obtained from these measurements, were opened and repaired. The resistance of these splices was also measured before and after the repair. We here present the results of this measuring campaign, together with the analysis that estimates the highest splice resistance left in the machine, which is a limiting factor to the maximum safe energy at which the LHC can operateCERN-ATS-2010-200oai:cds.cern.ch:12882912010-08-31
spellingShingle Accelerators and Storage Rings
Koratzinos, M
Bertinelli, F
Flora, R H
Pfeffer, H
Scheuerlein, C
Siemko, A
Strait, J
Measurements of the Resistance of Main Circuit Busbar Segments at the LHC at Warm
title Measurements of the Resistance of Main Circuit Busbar Segments at the LHC at Warm
title_full Measurements of the Resistance of Main Circuit Busbar Segments at the LHC at Warm
title_fullStr Measurements of the Resistance of Main Circuit Busbar Segments at the LHC at Warm
title_full_unstemmed Measurements of the Resistance of Main Circuit Busbar Segments at the LHC at Warm
title_short Measurements of the Resistance of Main Circuit Busbar Segments at the LHC at Warm
title_sort measurements of the resistance of main circuit busbar segments at the lhc at warm
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1288291
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