Probing intensity limits of LHC-Type bunches in CERN SPS with nominal optics

Some of the upgrade scenarios of the high-luminosity LHC require large intensity per bunch from the injector chain. Single bunch beams with intensities of up to 3.5 to 4e11 p/b and nominal emittances were successfully produced in the PS Complex and delivered to the SPS in 2010. This contribution pre...

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Autores principales: Adrian, G, Allen, D, Andujar, O, Argyropoulos, T, Axensalva, J, Baldy, J, Bartosik, H, Cettour Cave, S, Chapuis, F, Comblin, JF, Cornelis, K, Cotte, D, Cunnington, K, Damerau, H, Delrieux, M, Duran-Lopez, JL, Esteban Mueller, J, Findlay, A, Fleuret, J, Follin, F, Freyermuth, P, Genoud, H, Gilardoni, S, Guerrero, A, Hancock, S, Hanke, K, Hans, O, Hazelaar, R, Höfle, W, Jensen, L, Kuczerowski, J, Le Borgne, Y, Maillet, R, Manglunki, D, Massot, S, Matli, E, Métral, G, Métral, E, Mikulec, B, Nonglaton, JM, Ovalle, E, Papaphilippou, Y, Pereira, L, Peters, F, Rey, A, Ridewood, J, Rumolo, G, Salvant, B, Sanchez Alvarez, JL, Shaposhnikova, E, Steerenberg, R, Steinhagen, R, Tan, J, Vandorpe, B, Veyrunes, E
Lenguaje:eng
Publicado: 2011
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1382441
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author Adrian, G
Allen, D
Andujar, O
Argyropoulos, T
Axensalva, J
Baldy, J
Bartosik, H
Cettour Cave, S
Chapuis, F
Comblin, JF
Cornelis, K
Cotte, D
Cunnington, K
Damerau, H
Delrieux, M
Duran-Lopez, JL
Esteban Mueller, J
Findlay, A
Fleuret, J
Follin, F
Freyermuth, P
Genoud, H
Gilardoni, S
Guerrero, A
Hancock, S
Hanke, K
Hans, O
Hazelaar, R
Höfle, W
Jensen, L
Kuczerowski, J
Le Borgne, Y
Maillet, R
Manglunki, D
Massot, S
Matli, E
Métral, G
Métral, E
Mikulec, B
Nonglaton, JM
Ovalle, E
Papaphilippou, Y
Pereira, L
Peters, F
Rey, A
Ridewood, J
Rumolo, G
Salvant, B
Sanchez Alvarez, JL
Shaposhnikova, E
Steerenberg, R
Steinhagen, R
Tan, J
Vandorpe, B
Veyrunes, E
author_facet Adrian, G
Allen, D
Andujar, O
Argyropoulos, T
Axensalva, J
Baldy, J
Bartosik, H
Cettour Cave, S
Chapuis, F
Comblin, JF
Cornelis, K
Cotte, D
Cunnington, K
Damerau, H
Delrieux, M
Duran-Lopez, JL
Esteban Mueller, J
Findlay, A
Fleuret, J
Follin, F
Freyermuth, P
Genoud, H
Gilardoni, S
Guerrero, A
Hancock, S
Hanke, K
Hans, O
Hazelaar, R
Höfle, W
Jensen, L
Kuczerowski, J
Le Borgne, Y
Maillet, R
Manglunki, D
Massot, S
Matli, E
Métral, G
Métral, E
Mikulec, B
Nonglaton, JM
Ovalle, E
Papaphilippou, Y
Pereira, L
Peters, F
Rey, A
Ridewood, J
Rumolo, G
Salvant, B
Sanchez Alvarez, JL
Shaposhnikova, E
Steerenberg, R
Steinhagen, R
Tan, J
Vandorpe, B
Veyrunes, E
author_sort Adrian, G
collection CERN
description Some of the upgrade scenarios of the high-luminosity LHC require large intensity per bunch from the injector chain. Single bunch beams with intensities of up to 3.5 to 4e11 p/b and nominal emittances were successfully produced in the PS Complex and delivered to the SPS in 2010. This contribution presents results of studies with this new intense beam in the SPS to probe single bunch intensity limitations with nominal gamma transition. In particular, the vertical Transverse Mode Coupling Instability (TMCI) threshold with low chromaticity was observed at 1.6e11 p/b for single nominal LHC bunches in the SPS. With increased vertical chromaticity, larger intensities could be injected, stored along the flat bottom and accelerated up to 450 GeV/c. However, significant losses and/or transverse emittance blow up were then observed. Longitudinal and transverse optimization efforts in the PSB, PS and SPS were put in place to minimize this beam degradation and succeeded to obtain single 2.5e11 p/b LHC type bunches with satisfying parameters at extraction of the SPS.
id cern-1382441
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13824412022-08-17T13:31:52Zhttp://cds.cern.ch/record/1382441engAdrian, GAllen, DAndujar, OArgyropoulos, TAxensalva, JBaldy, JBartosik, HCettour Cave, SChapuis, FComblin, JFCornelis, KCotte, DCunnington, KDamerau, HDelrieux, MDuran-Lopez, JLEsteban Mueller, JFindlay, AFleuret, JFollin, FFreyermuth, PGenoud, HGilardoni, SGuerrero, AHancock, SHanke, KHans, OHazelaar, RHöfle, WJensen, LKuczerowski, JLe Borgne, YMaillet, RManglunki, DMassot, SMatli, EMétral, GMétral, EMikulec, BNonglaton, JMOvalle, EPapaphilippou, YPereira, LPeters, FRey, ARidewood, JRumolo, GSalvant, BSanchez Alvarez, JLShaposhnikova, ESteerenberg, RSteinhagen, RTan, JVandorpe, BVeyrunes, EProbing intensity limits of LHC-Type bunches in CERN SPS with nominal opticsAccelerators and Storage RingsSome of the upgrade scenarios of the high-luminosity LHC require large intensity per bunch from the injector chain. Single bunch beams with intensities of up to 3.5 to 4e11 p/b and nominal emittances were successfully produced in the PS Complex and delivered to the SPS in 2010. This contribution presents results of studies with this new intense beam in the SPS to probe single bunch intensity limitations with nominal gamma transition. In particular, the vertical Transverse Mode Coupling Instability (TMCI) threshold with low chromaticity was observed at 1.6e11 p/b for single nominal LHC bunches in the SPS. With increased vertical chromaticity, larger intensities could be injected, stored along the flat bottom and accelerated up to 450 GeV/c. However, significant losses and/or transverse emittance blow up were then observed. Longitudinal and transverse optimization efforts in the PSB, PS and SPS were put in place to minimize this beam degradation and succeeded to obtain single 2.5e11 p/b LHC type bunches with satisfying parameters at extraction of the SPS.CERN-ATS-2011-176oai:cds.cern.ch:13824412011-09-15
spellingShingle Accelerators and Storage Rings
Adrian, G
Allen, D
Andujar, O
Argyropoulos, T
Axensalva, J
Baldy, J
Bartosik, H
Cettour Cave, S
Chapuis, F
Comblin, JF
Cornelis, K
Cotte, D
Cunnington, K
Damerau, H
Delrieux, M
Duran-Lopez, JL
Esteban Mueller, J
Findlay, A
Fleuret, J
Follin, F
Freyermuth, P
Genoud, H
Gilardoni, S
Guerrero, A
Hancock, S
Hanke, K
Hans, O
Hazelaar, R
Höfle, W
Jensen, L
Kuczerowski, J
Le Borgne, Y
Maillet, R
Manglunki, D
Massot, S
Matli, E
Métral, G
Métral, E
Mikulec, B
Nonglaton, JM
Ovalle, E
Papaphilippou, Y
Pereira, L
Peters, F
Rey, A
Ridewood, J
Rumolo, G
Salvant, B
Sanchez Alvarez, JL
Shaposhnikova, E
Steerenberg, R
Steinhagen, R
Tan, J
Vandorpe, B
Veyrunes, E
Probing intensity limits of LHC-Type bunches in CERN SPS with nominal optics
title Probing intensity limits of LHC-Type bunches in CERN SPS with nominal optics
title_full Probing intensity limits of LHC-Type bunches in CERN SPS with nominal optics
title_fullStr Probing intensity limits of LHC-Type bunches in CERN SPS with nominal optics
title_full_unstemmed Probing intensity limits of LHC-Type bunches in CERN SPS with nominal optics
title_short Probing intensity limits of LHC-Type bunches in CERN SPS with nominal optics
title_sort probing intensity limits of lhc-type bunches in cern sps with nominal optics
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1382441
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