Amorphous Carbon Coatings at Cryogenic Temperatures with LHC Type Beams: First Results with the COLDEX Experiment

Extrapolations of electron cloud data from the Large Hadron Collider (LHC) Run 1 to the High Luminosity upgrade (HL-LHC) beam parameters predict an intolerable increase of heat load on the beam screens of the inner triplets. Amorphous carbon (a-C) coating of the beam screen surface is proposed to re...

Descripción completa

Detalles Bibliográficos
Autores principales: Salemme, Roberto, Baglin, Vincent, Bregliozzi, Giuseppe, Chiggiato, Paolo, Kersevan, Roberto
Lenguaje:eng
Publicado: 2015
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/2141874
_version_ 1780950167292215296
author Salemme, Roberto
Baglin, Vincent
Bregliozzi, Giuseppe
Chiggiato, Paolo
Kersevan, Roberto
author_facet Salemme, Roberto
Baglin, Vincent
Bregliozzi, Giuseppe
Chiggiato, Paolo
Kersevan, Roberto
author_sort Salemme, Roberto
collection CERN
description Extrapolations of electron cloud data from the Large Hadron Collider (LHC) Run 1 to the High Luminosity upgrade (HL-LHC) beam parameters predict an intolerable increase of heat load on the beam screens of the inner triplets. Amorphous carbon (a-C) coating of the beam screen surface is proposed to reduce electron cloud production, thereby minimising its dissipated power. To validate this solution, the COLDEX experiment has been re-commissioned. Such equipment mimics the performance of the LHC cold bore and beam screen cryogenic vacuum system in presence of LHC beams in the Super Proton Synchrotron (SPS). The main objective of the study is the performance evaluation of a-C coatings while operating the beam screen in the 10 to 60 K temperature range and cold bore below 3 K. This paper reviews the status of COLDEX and the results obtained during its first experimental runs.
id oai-inspirehep.net-1418038
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2015
record_format invenio
spelling oai-inspirehep.net-14180382022-08-10T12:59:31Zhttp://cds.cern.ch/record/2141874engSalemme, RobertoBaglin, VincentBregliozzi, GiuseppeChiggiato, PaoloKersevan, RobertoAmorphous Carbon Coatings at Cryogenic Temperatures with LHC Type Beams: First Results with the COLDEX ExperimentAccelerators and Storage RingsExtrapolations of electron cloud data from the Large Hadron Collider (LHC) Run 1 to the High Luminosity upgrade (HL-LHC) beam parameters predict an intolerable increase of heat load on the beam screens of the inner triplets. Amorphous carbon (a-C) coating of the beam screen surface is proposed to reduce electron cloud production, thereby minimising its dissipated power. To validate this solution, the COLDEX experiment has been re-commissioned. Such equipment mimics the performance of the LHC cold bore and beam screen cryogenic vacuum system in presence of LHC beams in the Super Proton Synchrotron (SPS). The main objective of the study is the performance evaluation of a-C coatings while operating the beam screen in the 10 to 60 K temperature range and cold bore below 3 K. This paper reviews the status of COLDEX and the results obtained during its first experimental runs.CERN-ACC-2015-241oai:inspirehep.net:14180382015
spellingShingle Accelerators and Storage Rings
Salemme, Roberto
Baglin, Vincent
Bregliozzi, Giuseppe
Chiggiato, Paolo
Kersevan, Roberto
Amorphous Carbon Coatings at Cryogenic Temperatures with LHC Type Beams: First Results with the COLDEX Experiment
title Amorphous Carbon Coatings at Cryogenic Temperatures with LHC Type Beams: First Results with the COLDEX Experiment
title_full Amorphous Carbon Coatings at Cryogenic Temperatures with LHC Type Beams: First Results with the COLDEX Experiment
title_fullStr Amorphous Carbon Coatings at Cryogenic Temperatures with LHC Type Beams: First Results with the COLDEX Experiment
title_full_unstemmed Amorphous Carbon Coatings at Cryogenic Temperatures with LHC Type Beams: First Results with the COLDEX Experiment
title_short Amorphous Carbon Coatings at Cryogenic Temperatures with LHC Type Beams: First Results with the COLDEX Experiment
title_sort amorphous carbon coatings at cryogenic temperatures with lhc type beams: first results with the coldex experiment
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/2141874
work_keys_str_mv AT salemmeroberto amorphouscarboncoatingsatcryogenictemperatureswithlhctypebeamsfirstresultswiththecoldexexperiment
AT baglinvincent amorphouscarboncoatingsatcryogenictemperatureswithlhctypebeamsfirstresultswiththecoldexexperiment
AT bregliozzigiuseppe amorphouscarboncoatingsatcryogenictemperatureswithlhctypebeamsfirstresultswiththecoldexexperiment
AT chiggiatopaolo amorphouscarboncoatingsatcryogenictemperatureswithlhctypebeamsfirstresultswiththecoldexexperiment
AT kersevanroberto amorphouscarboncoatingsatcryogenictemperatureswithlhctypebeamsfirstresultswiththecoldexexperiment

Ejemplares similares