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

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 assembl...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2002-03, Vol.12 (1), p.247-250
Main Authors: Aleksa, M., Amet, S., Ang, Z., Bottura, L., Buzio, M., Ferracin, P., Pagano, O., Remondino, V., Russenschuck, S., Sanfilippo, S., Scandale, W., Todesco, E.
Format: Article
Language:English
Subjects:
Assembly
Coiling
Cyclic accelerators and storage rings
Decay
Dipoles
Dynamic tests
Errors
Exact sciences and technology
Experimental methods and instrumentation for elementary-particle and nuclear physics
Geometry
Large Hadron Collider
Magnetic analysis
Magnetic field measurement
Magnetization
Nuclear physics
Performance evaluation
Physics
Prototypes
Ramps
Superconducting cables
Superconducting coils
Superconductivity
Testing
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Description
Summary: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.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2002.1018392