Feasibility study for compensating the anharmonicities in LEP with additional octupoles

Operating LEP with the 108/90 optics at the end of the 1996 run indicated a limitation of the dynamic aperture due to a combined effect of non-linear resonances and anharmonicities. This note analyses the feasibility of improving the dynamic aperture in LEP by compensating the anharmonicities with a...

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Detalles Bibliográficos
Autores principales: Brüning, Oliver Sim, Koutchouk, Jean-Pierre
Lenguaje:eng
Publicado: 1997
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/323761
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author Brüning, Oliver Sim
Koutchouk, Jean-Pierre
author_facet Brüning, Oliver Sim
Koutchouk, Jean-Pierre
author_sort Brüning, Oliver Sim
collection CERN
description Operating LEP with the 108/90 optics at the end of the 1996 run indicated a limitation of the dynamic aperture due to a combined effect of non-linear resonances and anharmonicities. This note analyses the feasibility of improving the dynamic aperture in LEP by compensating the anharmonicities with additional octupoles. The presented scheme reduces the anharmonicities in LEP by more than 60%, resulting in a sufficiently large dynamic aperture. The scheme places octupoles in all odd IP's with 4 octupoles powered in two pairs per IP.
id cern-323761
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1997
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spelling cern-3237612023-05-05T12:57:30Zhttp://cds.cern.ch/record/323761engBrüning, Oliver SimKoutchouk, Jean-PierreFeasibility study for compensating the anharmonicities in LEP with additional octupolesAccelerators and Storage RingsOperating LEP with the 108/90 optics at the end of the 1996 run indicated a limitation of the dynamic aperture due to a combined effect of non-linear resonances and anharmonicities. This note analyses the feasibility of improving the dynamic aperture in LEP by compensating the anharmonicities with additional octupoles. The presented scheme reduces the anharmonicities in LEP by more than 60%, resulting in a sufficiently large dynamic aperture. The scheme places octupoles in all odd IP's with 4 octupoles powered in two pairs per IP.CERN-SL-97-011-APoai:cds.cern.ch:3237611997
spellingShingle Accelerators and Storage Rings
Brüning, Oliver Sim
Koutchouk, Jean-Pierre
Feasibility study for compensating the anharmonicities in LEP with additional octupoles
title Feasibility study for compensating the anharmonicities in LEP with additional octupoles
title_full Feasibility study for compensating the anharmonicities in LEP with additional octupoles
title_fullStr Feasibility study for compensating the anharmonicities in LEP with additional octupoles
title_full_unstemmed Feasibility study for compensating the anharmonicities in LEP with additional octupoles
title_short Feasibility study for compensating the anharmonicities in LEP with additional octupoles
title_sort feasibility study for compensating the anharmonicities in lep with additional octupoles
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/323761
work_keys_str_mv AT bruningoliversim feasibilitystudyforcompensatingtheanharmonicitiesinlepwithadditionaloctupoles
AT koutchoukjeanpierre feasibilitystudyforcompensatingtheanharmonicitiesinlepwithadditionaloctupoles

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