First Results from COLDEX Applicable to the LHC Cryogenic Vacuum System

A cold bore experiment (COLDEX) has been installed in the electron-positron accumulator (EPA) at CERN. The ~2 m long COLDEX cryostat, that may be cooled to below 3 K, is fitted with an actively cooled perforated beam screen to simulate the conditions in the cold arcs of the LHC. Initially, gas desor...

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Detalles Bibliográficos
Autores principales: Baglin, V, Collins, I R, Grünhagel, C, Gröbner, Oswald, Jenninger, B
Lenguaje:eng
Publicado: 2000
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/466536
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author Baglin, V
Collins, I R
Grünhagel, C
Gröbner, Oswald
Jenninger, B
author_facet Baglin, V
Collins, I R
Grünhagel, C
Gröbner, Oswald
Jenninger, B
author_sort Baglin, V
collection CERN
description A cold bore experiment (COLDEX) has been installed in the electron-positron accumulator (EPA) at CERN. The ~2 m long COLDEX cryostat, that may be cooled to below 3 K, is fitted with an actively cooled perforated beam screen to simulate the conditions in the cold arcs of the LHC. Initially, gas desorption yields were obtained using an external synchrotron radiation beam line by exposing the beam screen to grazing incident radiation with a critical energy of 194 eV. In an extended period of EPA operation and during a dedicated period for LHC studies, COLDEX was installed into the EPA ring to study more specifically the influence of the bunched positron and electron beams with the cold bore / beam screen vacuum system. The results from these experiments and some predictions applicable for the LHC will be presented.
id cern-466536
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2000
record_format invenio
spelling cern-4665362023-05-31T13:23:53Zhttp://cds.cern.ch/record/466536engBaglin, VCollins, I RGrünhagel, CGröbner, OswaldJenninger, BFirst Results from COLDEX Applicable to the LHC Cryogenic Vacuum SystemAccelerators and Storage RingsA cold bore experiment (COLDEX) has been installed in the electron-positron accumulator (EPA) at CERN. The ~2 m long COLDEX cryostat, that may be cooled to below 3 K, is fitted with an actively cooled perforated beam screen to simulate the conditions in the cold arcs of the LHC. Initially, gas desorption yields were obtained using an external synchrotron radiation beam line by exposing the beam screen to grazing incident radiation with a critical energy of 194 eV. In an extended period of EPA operation and during a dedicated period for LHC studies, COLDEX was installed into the EPA ring to study more specifically the influence of the bunched positron and electron beams with the cold bore / beam screen vacuum system. The results from these experiments and some predictions applicable for the LHC will be presented.LHC-Project-Report-435CERN-LHC-Project-Report-435oai:cds.cern.ch:4665362000-09-23
spellingShingle Accelerators and Storage Rings
Baglin, V
Collins, I R
Grünhagel, C
Gröbner, Oswald
Jenninger, B
First Results from COLDEX Applicable to the LHC Cryogenic Vacuum System
title First Results from COLDEX Applicable to the LHC Cryogenic Vacuum System
title_full First Results from COLDEX Applicable to the LHC Cryogenic Vacuum System
title_fullStr First Results from COLDEX Applicable to the LHC Cryogenic Vacuum System
title_full_unstemmed First Results from COLDEX Applicable to the LHC Cryogenic Vacuum System
title_short First Results from COLDEX Applicable to the LHC Cryogenic Vacuum System
title_sort first results from coldex applicable to the lhc cryogenic vacuum system
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/466536
work_keys_str_mv AT baglinv firstresultsfromcoldexapplicabletothelhccryogenicvacuumsystem
AT collinsir firstresultsfromcoldexapplicabletothelhccryogenicvacuumsystem
AT grunhagelc firstresultsfromcoldexapplicabletothelhccryogenicvacuumsystem
AT grobneroswald firstresultsfromcoldexapplicabletothelhccryogenicvacuumsystem
AT jenningerb firstresultsfromcoldexapplicabletothelhccryogenicvacuumsystem

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