Quench performance of Fermilab model magnets for the LHC inner triplet quadrupoles

Author

Andreev, N. ; Arkan, T. ; Bauer, P. ; Bossert, R. ; Brandt, J. ; Carson, J. ; Caspi, S. ; Chichili, D.R. ; Chiesa, L. ; DiMarco, J. ; Feher, S. ; Ghosh, A. ; Glass, H. ; Kerby, J. ; Lamm, M.J. ; Makarov, A. ; McInturff, A.D. ; Nobrega, A. ; Novitski, I. ;

Author_Institution

Fermi Nat. Accel. Lab., Batavia, IL, USA

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

1633

Lastpage

1636

Abstract

As part of the US LHC program to develop high gradient superconducting quadrupoles for the LHC interaction regions, a series of 2 meter long model magnets has been built and tested at Fermilab. This R&D program was used to refine the mechanical and magnetic design, optimize fabrication and assembly tooling and ensure adequate quench performance. The final design, fabrication, and assembly procedures developed in this program have produced magnets which meet the LHC requirements of operating at 215 T/m with excellent magnetic field harmonics. This paper summarizes the test results of the last five model magnets, including quench tests over several thermal cycles, and excitation current ramp rate and temperature dependence studies

Keywords

accelerator magnets; magnetic fields; storage rings; superconducting magnets; synchrotrons; 2 m; Fermilab model magnets; LHC inner triplet quadrupoles; LHC interaction regions; R&D program; assembly tooling; excitation current ramp rate; fabrication optimisation; high gradient superconducting quadrupoles; magnetic design; magnetic field harmonics; mechanical design; quench performance; quench tests; temperature dependence; Assembly; Fabrication; Helium; Large Hadron Collider; Manufacturing; Superconducting cables; Superconducting coils; Superconducting epitaxial layers; Superconducting magnets; Testing;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.920093

Filename

920093