Quench protection of the LHC inner triplet quadrupoles built at Fermilab

Author

Bauer, P. ; Bossert, R. ; Chiesa, L. ; DiMarco, J. ; Feher, S. ; Lamm, M.J. ; McInturff, A.D. ; Nobrega, A. ; Orris, D. ; Tartaglia, M. ; Tompkins, J.C. ; Zlobin, A.V.

Author_Institution

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

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

1617

Lastpage

1620

Abstract

High gradient quadrupoles are being developed by the US-LHC Accelerator project for the LHC interaction region inner triplets. These 5.5 m long magnets have a single 70 mm aperture and operate in superfluid helium at a peak gradient of 215 T/m. Through the construction and test of eight 2 meter long model quadrupoles, strip heaters of various geometries and insulation thicknesses have proven to be effective in protecting the magnets from excessively high coil temperatures and coil voltages to ground. This paper reports on the results of the model program to optimize the heater performance within the context of the LHC inner triplet electrical power and quench detection scheme

Keywords

accelerator magnets; protection; storage rings; superconducting coils; superconducting magnets; synchrotrons; 2 m; 5.5 m; 70 mm; Fermilab; LHC inner triplet quadrupoles; coil voltages to ground; high coil temperatures; high gradient quadrupoles; insulation thicknesses; quench protection; strip heaters; superconducting magnets protection; superfluid helium; Apertures; Coils; Geometry; Helium; Insulation testing; Large Hadron Collider; Magnets; Protection; Solid modeling; Strips;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.920089

Filename

920089