Time dependence of magnetic periodic patterns measured on the MQXA magnets for the LHC-IR

Superconducting quadrupole magnets for the LHC-IR have been developed and tested by KEK in collaboration with CERN. Magnetic field measurements of the magnets were performed. The magnets satisfy the requirements for the accelerator operation. In addition to the field quality measurements, fine struc...

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Detalles Bibliográficos
Autores principales: Sugita, K, Nakamoto, T, Ogitsu, T, Ohuchi, N, Shintomi, T, Tsuchiya, K, Yamamoto, A
Lenguaje:eng
Publicado: 2003
Materias:
Engineering
Acceso en línea:https://dx.doi.org/10.1109/TASC.2003.812661
http://cds.cern.ch/record/725951
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author Sugita, K
Nakamoto, T
Ogitsu, T
Ohuchi, N
Shintomi, T
Tsuchiya, K
Yamamoto, A
author_facet Sugita, K
Nakamoto, T
Ogitsu, T
Ohuchi, N
Shintomi, T
Tsuchiya, K
Yamamoto, A
author_sort Sugita, K
collection CERN
description Superconducting quadrupole magnets for the LHC-IR have been developed and tested by KEK in collaboration with CERN. Magnetic field measurements of the magnets were performed. The magnets satisfy the requirements for the accelerator operation. In addition to the field quality measurements, fine structures of the magnetic field along the magnet axis were measured at the beam injection current using a 25 mm long rotating harmonic coil. Periodic patterns of the magnetic field were observed in higher order multipole coefficients. The pitch of the periodic patterns is equal to the cable twist pitch. The time dependent change of the amplitude of the periodic pattern was also observed. In this paper, the measurement and results are reported. (8 refs).
id cern-725951
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
record_format invenio
spelling cern-7259512019-09-30T06:29:59Zdoi:10.1109/TASC.2003.812661http://cds.cern.ch/record/725951engSugita, KNakamoto, TOgitsu, TOhuchi, NShintomi, TTsuchiya, KYamamoto, ATime dependence of magnetic periodic patterns measured on the MQXA magnets for the LHC-IREngineeringSuperconducting quadrupole magnets for the LHC-IR have been developed and tested by KEK in collaboration with CERN. Magnetic field measurements of the magnets were performed. The magnets satisfy the requirements for the accelerator operation. In addition to the field quality measurements, fine structures of the magnetic field along the magnet axis were measured at the beam injection current using a 25 mm long rotating harmonic coil. Periodic patterns of the magnetic field were observed in higher order multipole coefficients. The pitch of the periodic patterns is equal to the cable twist pitch. The time dependent change of the amplitude of the periodic pattern was also observed. In this paper, the measurement and results are reported. (8 refs).oai:cds.cern.ch:7259512003
spellingShingle Engineering
Sugita, K
Nakamoto, T
Ogitsu, T
Ohuchi, N
Shintomi, T
Tsuchiya, K
Yamamoto, A
Time dependence of magnetic periodic patterns measured on the MQXA magnets for the LHC-IR
title Time dependence of magnetic periodic patterns measured on the MQXA magnets for the LHC-IR
title_full Time dependence of magnetic periodic patterns measured on the MQXA magnets for the LHC-IR
title_fullStr Time dependence of magnetic periodic patterns measured on the MQXA magnets for the LHC-IR
title_full_unstemmed Time dependence of magnetic periodic patterns measured on the MQXA magnets for the LHC-IR
title_short Time dependence of magnetic periodic patterns measured on the MQXA magnets for the LHC-IR
title_sort time dependence of magnetic periodic patterns measured on the mqxa magnets for the lhc-ir
topic Engineering
url https://dx.doi.org/10.1109/TASC.2003.812661
http://cds.cern.ch/record/725951
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AT ohuchin timedependenceofmagneticperiodicpatternsmeasuredonthemqxamagnetsforthelhcir
AT shintomit timedependenceofmagneticperiodicpatternsmeasuredonthemqxamagnetsforthelhcir
AT tsuchiyak timedependenceofmagneticperiodicpatternsmeasuredonthemqxamagnetsforthelhcir
AT yamamotoa timedependenceofmagneticperiodicpatternsmeasuredonthemqxamagnetsforthelhcir

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