Measurement of NEG Coating Performance Variation in the LHC after the First Long Shutdown

During the Long Shutdown 1 (LS1) of the Large Hadron Collider, 90% of the Non-Evaporable Getter (NEG) coated beam pipes in the Long Straight Sections (LSS) were vented to undertake the planned upgrade and consolidation programmes. After each intervention, an additional bake-out and NEG activation we...

Descripción completa

Detalles Bibliográficos
Autores principales: Bencini, Vittorio, Baglin, Vincent, Bregliozzi, Giuseppe, Chiggiato, Paolo, Kersevan, Roberto, Yin Vallgren, Christina
Lenguaje:eng
Publicado: 2015
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/2141870
_version_ 1780950166342205440
author Bencini, Vittorio
Baglin, Vincent
Bregliozzi, Giuseppe
Chiggiato, Paolo
Kersevan, Roberto
Yin Vallgren, Christina
author_facet Bencini, Vittorio
Baglin, Vincent
Bregliozzi, Giuseppe
Chiggiato, Paolo
Kersevan, Roberto
Yin Vallgren, Christina
author_sort Bencini, Vittorio
collection CERN
description During the Long Shutdown 1 (LS1) of the Large Hadron Collider, 90% of the Non-Evaporable Getter (NEG) coated beam pipes in the Long Straight Sections (LSS) were vented to undertake the planned upgrade and consolidation programmes. After each intervention, an additional bake-out and NEG activation were performed to reach the vacuum requirements. An analysis of the coating performance variation after the additional activation cycle has been carried out by using ultimate pressure and pressure build-up measurements. In addition, laboratory measurements have been carried out to mimic the LHC coated beam pipe behaviour. The experimental data have been compared with calculation obtained by Molflow+.
id oai-inspirehep.net-1418034
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2015
record_format invenio
spelling oai-inspirehep.net-14180342022-08-10T12:59:31Zhttp://cds.cern.ch/record/2141870engBencini, VittorioBaglin, VincentBregliozzi, GiuseppeChiggiato, PaoloKersevan, RobertoYin Vallgren, ChristinaMeasurement of NEG Coating Performance Variation in the LHC after the First Long ShutdownAccelerators and Storage RingsDuring the Long Shutdown 1 (LS1) of the Large Hadron Collider, 90% of the Non-Evaporable Getter (NEG) coated beam pipes in the Long Straight Sections (LSS) were vented to undertake the planned upgrade and consolidation programmes. After each intervention, an additional bake-out and NEG activation were performed to reach the vacuum requirements. An analysis of the coating performance variation after the additional activation cycle has been carried out by using ultimate pressure and pressure build-up measurements. In addition, laboratory measurements have been carried out to mimic the LHC coated beam pipe behaviour. The experimental data have been compared with calculation obtained by Molflow+.CERN-ACC-2015-245oai:inspirehep.net:14180342015
spellingShingle Accelerators and Storage Rings
Bencini, Vittorio
Baglin, Vincent
Bregliozzi, Giuseppe
Chiggiato, Paolo
Kersevan, Roberto
Yin Vallgren, Christina
Measurement of NEG Coating Performance Variation in the LHC after the First Long Shutdown
title Measurement of NEG Coating Performance Variation in the LHC after the First Long Shutdown
title_full Measurement of NEG Coating Performance Variation in the LHC after the First Long Shutdown
title_fullStr Measurement of NEG Coating Performance Variation in the LHC after the First Long Shutdown
title_full_unstemmed Measurement of NEG Coating Performance Variation in the LHC after the First Long Shutdown
title_short Measurement of NEG Coating Performance Variation in the LHC after the First Long Shutdown
title_sort measurement of neg coating performance variation in the lhc after the first long shutdown
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/2141870
work_keys_str_mv AT bencinivittorio measurementofnegcoatingperformancevariationinthelhcafterthefirstlongshutdown
AT baglinvincent measurementofnegcoatingperformancevariationinthelhcafterthefirstlongshutdown
AT bregliozzigiuseppe measurementofnegcoatingperformancevariationinthelhcafterthefirstlongshutdown
AT chiggiatopaolo measurementofnegcoatingperformancevariationinthelhcafterthefirstlongshutdown
AT kersevanroberto measurementofnegcoatingperformancevariationinthelhcafterthefirstlongshutdown
AT yinvallgrenchristina measurementofnegcoatingperformancevariationinthelhcafterthefirstlongshutdown

Ejemplares similares