Title :
Correction of high gradient quadrupole harmonics with magnetic shims
Author :
Sabbi, G. ; DiMarco, J. ; Nobrega, A. ; Ogitsu, T. ; Schlabach, P. ; Tompkins, J.C. ; Yadav, S.
Author_Institution :
Fermi Nat. Accel. Lab., Batavia, IL, USA
fDate :
3/1/2000 12:00:00 AM
Abstract :
Superconducting quadrupole magnets with 70 mm aperture and nominal field gradient of 215 T/m are being developed by the US-LHC Accelerator Project for the Interaction Regions of the Large Hadron Collider. Due to large beam size and orbit displacement in the final focusing triplet, these magnets are subject to stringent field quality requirements. For this reason, a correction scheme based on design calculations, fabrication issues and tests results involving magnetic shims.
Keywords :
accelerator magnets; colliding beam accelerators; proton accelerators; storage rings; superconducting magnets; Large Hadron Collider; US-LHC Accelerator Project; design calculations; fabrication issues; final focusing triplet; high gradient quadrupole harmonics; magnetic shims; orbit displacement; stringent field quality requirements; Apertures; Conductors; Error correction; Fabrication; Iron; Lamination; Magnets; Painting; Research and development; Testing;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
