Influence of mechanical vibrations on the field quality measurements of LHC interaction region quadrupole magnets

Citation
J. Dimarco et al., Influence of mechanical vibrations on the field quality measurements of LHC interaction region quadrupole magnets, IEEE APPL S, 10(1), 2000, pp. 1458-1461
Citations number
3
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
ISSN journal
1051-8223 → ACNP
Volume
10
Issue
1
Year of publication
2000
Pages
1458 - 1461
Database
ISI
SICI code
1051-8223(200003)10:1<1458:IOMVOT>2.0.ZU;2-U
Abstract
The high gradient quadrupole magnets being developed by the US-LHC Accelera tor Project for the LHC Interaction Regions have stringent field quality re quirements. The field quality of these magnets will be measured using a rot ating coil system presently under development. Mechanical vibrations of the coil during field quality measurements are of concern because such vibrati ons can introduce systematic errors in measurement results. This paper pres ents calculations of the expected influence of vibrations on field quality measurements and a technique to measure vibrations present in data acquired with standard "tangential-style" probes. Measured vibrations are reported and compared to simulations. Limits on systematic errors in multipole measu rements are discussed along with implications for probe and measurement sys tem design.