Cargando…

Performance Tests of a Short Faraday Cup Designed for HIE-ISOLDE

The On-Line Isotope Mass Separator (ISOLDE) facility at CERN is being upgraded in order to deliver higher energy and intensity radioactive beams. The final setup will consist in replacing the energy variable part of the normal conducting REX post-accelerator with superconducting cavities. In order t...

Descripción completa

Detalles Bibliográficos
Autores principales: Cantero, E, Andreazza, W, Bravin, E, Fraser, M, Lanaia, D, Sosa, A, Voulot, D
Lenguaje:eng
Publicado: 2013
Materias:
Acceso en línea:http://cds.cern.ch/record/1566628
_version_ 1780930982920060928
author Cantero, E
Andreazza, W
Bravin, E
Fraser, M
Lanaia, D
Sosa, A
Voulot, D
author_facet Cantero, E
Andreazza, W
Bravin, E
Fraser, M
Lanaia, D
Sosa, A
Voulot, D
author_sort Cantero, E
collection CERN
description The On-Line Isotope Mass Separator (ISOLDE) facility at CERN is being upgraded in order to deliver higher energy and intensity radioactive beams. The final setup will consist in replacing the energy variable part of the normal conducting REX post-accelerator with superconducting cavities. In order to preserve the beam emittance, the drift space between the cryomodules housing these cavities has been kept to a minimum. As a consequence, the longitudinal space available for beam diagnostics is severely limited in the inter-cryomodule regions. A Faraday cup (FC) will be installed to measure beam currents, and due to the tight spatial constraints, its length is much smaller than usual. This poses a great challenge when trying to avoid the escape of ion-induced secondary electrons, which would falsify the current measurement. Two prototypes of such a short FC have therefore been tested at REX-ISOLDE using several beam intensities and energies, with the aim of determining its accuracy. In this paper the experimental results obtained for the two prototype cups are presented together with numerical calculations of the electrostatic fields that are produced inside the cup.
id cern-1566628
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2013
record_format invenio
spelling cern-15666282019-09-30T06:29:59Zhttp://cds.cern.ch/record/1566628engCantero, EAndreazza, WBravin, EFraser, MLanaia, DSosa, AVoulot, DPerformance Tests of a Short Faraday Cup Designed for HIE-ISOLDEAccelerators and Storage RingsThe On-Line Isotope Mass Separator (ISOLDE) facility at CERN is being upgraded in order to deliver higher energy and intensity radioactive beams. The final setup will consist in replacing the energy variable part of the normal conducting REX post-accelerator with superconducting cavities. In order to preserve the beam emittance, the drift space between the cryomodules housing these cavities has been kept to a minimum. As a consequence, the longitudinal space available for beam diagnostics is severely limited in the inter-cryomodule regions. A Faraday cup (FC) will be installed to measure beam currents, and due to the tight spatial constraints, its length is much smaller than usual. This poses a great challenge when trying to avoid the escape of ion-induced secondary electrons, which would falsify the current measurement. Two prototypes of such a short FC have therefore been tested at REX-ISOLDE using several beam intensities and energies, with the aim of determining its accuracy. In this paper the experimental results obtained for the two prototype cups are presented together with numerical calculations of the electrostatic fields that are produced inside the cup.CERN-ATS-2013-055oai:cds.cern.ch:15666282013-05-12
spellingShingle Accelerators and Storage Rings
Cantero, E
Andreazza, W
Bravin, E
Fraser, M
Lanaia, D
Sosa, A
Voulot, D
Performance Tests of a Short Faraday Cup Designed for HIE-ISOLDE
title Performance Tests of a Short Faraday Cup Designed for HIE-ISOLDE
title_full Performance Tests of a Short Faraday Cup Designed for HIE-ISOLDE
title_fullStr Performance Tests of a Short Faraday Cup Designed for HIE-ISOLDE
title_full_unstemmed Performance Tests of a Short Faraday Cup Designed for HIE-ISOLDE
title_short Performance Tests of a Short Faraday Cup Designed for HIE-ISOLDE
title_sort performance tests of a short faraday cup designed for hie-isolde
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1566628
work_keys_str_mv AT canteroe performancetestsofashortfaradaycupdesignedforhieisolde
AT andreazzaw performancetestsofashortfaradaycupdesignedforhieisolde
AT bravine performancetestsofashortfaradaycupdesignedforhieisolde
AT fraserm performancetestsofashortfaradaycupdesignedforhieisolde
AT lanaiad performancetestsofashortfaradaycupdesignedforhieisolde
AT sosaa performancetestsofashortfaradaycupdesignedforhieisolde
AT voulotd performancetestsofashortfaradaycupdesignedforhieisolde