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Deliverable 2.7: Analysis of the existing sources of blow-up in the SPS by experiments and estimation/measurement of the effect of the crab cavities in the SPS

The Crab Cavities (CCs) may induce emittance growth, driven by phase and amplitude jitter, and lead to a degradation of the High Luminosity LHC (HL-LHC) beam. Furthermore, the tight HL-LHC space constraints call for non-axially symmetric cavity designs that come with higher order non-li...

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Autores principales: Alekou, Androula, Antoniou, Fanouria, Appleby, Robert Barrie, Bartosik, Hannes, Calaga, Rama, Carla', Michele, Carver, Lee Robert, Papaphilippou, Yannis, Welsch, Carsten Peter
Lenguaje:eng
Publicado: 2020
Materias:
Acceso en línea:http://cds.cern.ch/record/2706139
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author Alekou, Androula
Antoniou, Fanouria
Appleby, Robert Barrie
Bartosik, Hannes
Calaga, Rama
Carla', Michele
Carver, Lee Robert
Papaphilippou, Yannis
Welsch, Carsten Peter
author_facet Alekou, Androula
Antoniou, Fanouria
Appleby, Robert Barrie
Bartosik, Hannes
Calaga, Rama
Carla', Michele
Carver, Lee Robert
Papaphilippou, Yannis
Welsch, Carsten Peter
author_sort Alekou, Androula
collection CERN
description The Crab Cavities (CCs) may induce emittance growth, driven by phase and amplitude jitter, and lead to a degradation of the High Luminosity LHC (HL-LHC) beam. Furthermore, the tight HL-LHC space constraints call for non-axially symmetric cavity designs that come with higher order non-linearities which can affect the long-term dynamic aperture (DA). In order to study the effect the CCs have on the beam and the engineering challenges to validate the pre-series design, a prototype HL-LHC CC set was installed in the SPS machine in the year-end technical stop (YETS) of 2017-2018, and the first ever CC tests with protons were performed in 2018. This note is a collection of the reports and work done on the emittance growth measurements prior and after the CC installation, as well as simulations and measurements performed to study the CC and SPS non linearities effect. Finally, a summary of the instrumentation observations of the SPS CC experimental measurements is presented.
id cern-2706139
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2020
record_format invenio
spelling cern-27061392020-01-14T22:36:48Zhttp://cds.cern.ch/record/2706139engAlekou, AndroulaAntoniou, FanouriaAppleby, Robert BarrieBartosik, HannesCalaga, RamaCarla', MicheleCarver, Lee RobertPapaphilippou, YannisWelsch, Carsten PeterDeliverable 2.7: Analysis of the existing sources of blow-up in the SPS by experiments and estimation/measurement of the effect of the crab cavities in the SPSAccelerators and Storage RingsThe Crab Cavities (CCs) may induce emittance growth, driven by phase and amplitude jitter, and lead to a degradation of the High Luminosity LHC (HL-LHC) beam. Furthermore, the tight HL-LHC space constraints call for non-axially symmetric cavity designs that come with higher order non-linearities which can affect the long-term dynamic aperture (DA). In order to study the effect the CCs have on the beam and the engineering challenges to validate the pre-series design, a prototype HL-LHC CC set was installed in the SPS machine in the year-end technical stop (YETS) of 2017-2018, and the first ever CC tests with protons were performed in 2018. This note is a collection of the reports and work done on the emittance growth measurements prior and after the CC installation, as well as simulations and measurements performed to study the CC and SPS non linearities effect. Finally, a summary of the instrumentation observations of the SPS CC experimental measurements is presented.CERN-ACC-2020-0001oai:cds.cern.ch:27061392020-01-09
spellingShingle Accelerators and Storage Rings
Alekou, Androula
Antoniou, Fanouria
Appleby, Robert Barrie
Bartosik, Hannes
Calaga, Rama
Carla', Michele
Carver, Lee Robert
Papaphilippou, Yannis
Welsch, Carsten Peter
Deliverable 2.7: Analysis of the existing sources of blow-up in the SPS by experiments and estimation/measurement of the effect of the crab cavities in the SPS
title Deliverable 2.7: Analysis of the existing sources of blow-up in the SPS by experiments and estimation/measurement of the effect of the crab cavities in the SPS
title_full Deliverable 2.7: Analysis of the existing sources of blow-up in the SPS by experiments and estimation/measurement of the effect of the crab cavities in the SPS
title_fullStr Deliverable 2.7: Analysis of the existing sources of blow-up in the SPS by experiments and estimation/measurement of the effect of the crab cavities in the SPS
title_full_unstemmed Deliverable 2.7: Analysis of the existing sources of blow-up in the SPS by experiments and estimation/measurement of the effect of the crab cavities in the SPS
title_short Deliverable 2.7: Analysis of the existing sources of blow-up in the SPS by experiments and estimation/measurement of the effect of the crab cavities in the SPS
title_sort deliverable 2.7: analysis of the existing sources of blow-up in the sps by experiments and estimation/measurement of the effect of the crab cavities in the sps
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/2706139
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