Study of time dependent magnetic field variation due to current redistribution in Rutherford cable

Time-varying magnetic field quality of superconducting accelerator magnets is a important issue of accelerator operation at particle injection. This is induced by magnetization changes of superconductors due to redistributions of imbalance current of superconducting strands in cables. Because the im...

Descripción completa

Detalles Bibliográficos
Autores principales: Sugita, Kei, Ogitsu, T, Ohuchi, Norihito, Nakamoto, Tatsushi, Shintomi, Takakazu, Tsuchiya, Kiyosumi, Yamamoto, Akira
Lenguaje:eng
Publicado: 2004
Materias:
Engineering
Acceso en línea:https://dx.doi.org/10.1109/TASC.2004.829065
http://cds.cern.ch/record/816566
_version_ 1780905408910589952
author Sugita, Kei
Ogitsu, T
Ohuchi, Norihito
Nakamoto, Tatsushi
Shintomi, Takakazu
Tsuchiya, Kiyosumi
Yamamoto, Akira
author_facet Sugita, Kei
Ogitsu, T
Ohuchi, Norihito
Nakamoto, Tatsushi
Shintomi, Takakazu
Tsuchiya, Kiyosumi
Yamamoto, Akira
author_sort Sugita, Kei
collection CERN
description Time-varying magnetic field quality of superconducting accelerator magnets is a important issue of accelerator operation at particle injection. This is induced by magnetization changes of superconductors due to redistributions of imbalance current of superconducting strands in cables. Because the imbalance current and its redistributions induce time variations of magnetic periodic patterns, to clarify the mechanism of time-varying magnetic field, we performed periodic pattern measurements on quadrapole magnets for the LHC insertion regions developed by KEK in collaboration with CERN. We report the results of the measurements with various excitation processes, and describe estimation of imbalance current using numerical calculation. 10 Refs.
id cern-816566
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2004
record_format invenio
spelling cern-8165662019-09-30T06:29:59Zdoi:10.1109/TASC.2004.829065http://cds.cern.ch/record/816566engSugita, KeiOgitsu, TOhuchi, NorihitoNakamoto, TatsushiShintomi, TakakazuTsuchiya, KiyosumiYamamoto, AkiraStudy of time dependent magnetic field variation due to current redistribution in Rutherford cableEngineeringTime-varying magnetic field quality of superconducting accelerator magnets is a important issue of accelerator operation at particle injection. This is induced by magnetization changes of superconductors due to redistributions of imbalance current of superconducting strands in cables. Because the imbalance current and its redistributions induce time variations of magnetic periodic patterns, to clarify the mechanism of time-varying magnetic field, we performed periodic pattern measurements on quadrapole magnets for the LHC insertion regions developed by KEK in collaboration with CERN. We report the results of the measurements with various excitation processes, and describe estimation of imbalance current using numerical calculation. 10 Refs.oai:cds.cern.ch:8165662004
spellingShingle Engineering
Sugita, Kei
Ogitsu, T
Ohuchi, Norihito
Nakamoto, Tatsushi
Shintomi, Takakazu
Tsuchiya, Kiyosumi
Yamamoto, Akira
Study of time dependent magnetic field variation due to current redistribution in Rutherford cable
title Study of time dependent magnetic field variation due to current redistribution in Rutherford cable
title_full Study of time dependent magnetic field variation due to current redistribution in Rutherford cable
title_fullStr Study of time dependent magnetic field variation due to current redistribution in Rutherford cable
title_full_unstemmed Study of time dependent magnetic field variation due to current redistribution in Rutherford cable
title_short Study of time dependent magnetic field variation due to current redistribution in Rutherford cable
title_sort study of time dependent magnetic field variation due to current redistribution in rutherford cable
topic Engineering
url https://dx.doi.org/10.1109/TASC.2004.829065
http://cds.cern.ch/record/816566
work_keys_str_mv AT sugitakei studyoftimedependentmagneticfieldvariationduetocurrentredistributioninrutherfordcable
AT ogitsut studyoftimedependentmagneticfieldvariationduetocurrentredistributioninrutherfordcable
AT ohuchinorihito studyoftimedependentmagneticfieldvariationduetocurrentredistributioninrutherfordcable
AT nakamototatsushi studyoftimedependentmagneticfieldvariationduetocurrentredistributioninrutherfordcable
AT shintomitakakazu studyoftimedependentmagneticfieldvariationduetocurrentredistributioninrutherfordcable
AT tsuchiyakiyosumi studyoftimedependentmagneticfieldvariationduetocurrentredistributioninrutherfordcable
AT yamamotoakira studyoftimedependentmagneticfieldvariationduetocurrentredistributioninrutherfordcable

Ejemplares similares