Title :
Cold Test Results of the Inner Triplet Orbit Correctors for the LHC
Author :
Delsolaro, W. Venturini ; Karppinen, M.
Author_Institution :
Eur. Center for Nucl. Res., CERN, Geneva
fDate :
6/1/2006 12:00:00 AM
Abstract :
The inner triplet orbit correctors for the LHC, MCBX and MCBXA, underwent acceptance tests at superfluid helium temperature at CERN, before shipping to FNAL for integration in the cold masses. A total of 27 MCBX (Horizontal-Vertical Dipole Correctors), of which 9 MCBXA (with nested Sextupole-Dodecapole insert), are needed for the LHC, including spares. The paper discusses the test protocols for series magnets, and reports the results of quench performance and cold magnetic measurements. The peculiarities of combined training and the hysteresis effects in the nested windings are presented, together with the search of the optimum setting procedure to minimize the persistent current effects on the beam dynamics
Keywords :
accelerator magnets; magnetic field measurement; particle beam dynamics; persistent currents; proton accelerators; storage rings; superconducting magnets; CERN; LHC; LHC correctors; MCBX; MCBXA; beam dynamics; cold magnetic measurements; horizontal-vertical dipole correctors; hysteresis effects; inner triplet orbit correctors; nested sextupole-dodecapole insert; nested superconducting magnets; optimum setting procedure; persistent current effects; quench performance; super-fluid helium temperature; test protocols; Coils; Helium; Large Hadron Collider; Magnetic hysteresis; Magnetic variables measurement; Magnets; Persistent currents; Protocols; Temperature; Testing; LHC correctors; nested superconducting magnets;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2006.871222
