Title :
Examination of contacts between strands by electrical measurement and topographical analysis
Author :
Depond, J.-M. ; Leroy, D. ; Oberli, L.R. ; Richter, D.
Author_Institution :
CERN, Geneva, Switzerland
fDate :
6/1/1997 12:00:00 AM
Abstract :
The contact resistance between crossing strands of Rutherford type superconducting be an essential parameter the main magnets in accelerators like the LHC. A strong development program to study the parameters fixing its value has been launched at CERN. The electrical contact resistance of individual strands with pre-selected coatings has been studied at 4.2 K under varying loading force by means of a 3 contacts DC method. The electro-mechanical properties of contacts have been studied on bare strands and strands with Sn, Ni, or Zn based coatings. The contact resistances measured on strands were compared to measurements made on cables. Contact resistance properties were analysed with respect to the requirements for the LHC main magnet cables.
Keywords :
accelerator magnets; contact resistance; superconducting cables; superconducting device testing; superconducting magnets; 4.2 K; DC electrical measurement; LHC; Rutherford cable; accelerator magnet; coating; crossing strands; electromechanical properties; inter-strand contact resistance; multistrand superconducting cable; topographical analysis; Accelerator magnets; Cables; Coatings; Contact resistance; Electric resistance; Electric variables measurement; Electrical resistance measurement; Large Hadron Collider; Superconducting magnets; Tin;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
