Measurement and analysis of the field quality of LHC prototype and pre-series superconducting dipoles

Author

Aleksa, M. ; Amet, S. ; Ang, Z. ; Bottura, L. ; Buzio, M. ; Ferracin, P. ; Pagano, O. ; Remondino, V. ; Russenschuck, S. ; Sanfilippo, S. ; Scandale, W. ; Todesco, E.

Author_Institution

CERN, Geneva, Switzerland

Volume

12

Issue

1

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

247

Lastpage

250

Abstract

We report the main results of the magnetic field measurements performed on the full-size LHC superconducting dipoles tested at CERN since summer 1998. Main field strength and field errors are summarized. We discuss in detail the contributions related to the geometry of the collared coil, the assembled cold mass, cool-down effects, magnetization of the superconducting cable and saturation effects at high field. Dynamic effects on field harmonics, such as the field decay during injection and field errors during current ramps, are assessed statistically.

Keywords

accelerator magnets; colliding beam accelerators; proton accelerators; storage rings; assembled cold mass; collared coil; cool-down effects; field errors; field strength; full-size LHC superconducting dipoles; magnetic field measurements; magnetization; pre-series superconducting dipoles; saturation effects; superconducting cable; Assembly; Geometry; Large Hadron Collider; Magnetic analysis; Magnetic field measurement; Performance evaluation; Prototypes; Superconducting cables; Superconducting coils; Testing;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2002.1018392

Filename

1018392