Conveners
M1PoF - HTS and LTS Cables I
- Arend Nijhuis (University of Twente)
- Robert Duckworth (ORNL)
Roebel cables from HTS coated conductors are used in the first real application, in dipole insert magnets for particle accelerators, performed in a work package of the EU-project Eucard2 of CERN. Following-up the first sub-size dipole magnet demonstrator, future full-size magnets require cable designs with significantly enhanced operation currents for favorable magnet impedance, for...
Cable-in-conduit conductor has particular benefits for superconducting magnets. It is rugged and provides cable-level stress management, it has internal flow of cryogen, flared ends can be formed readily and are self-stable once formed. Fabrication of long-length cable presents several challenges: the center tube must be formed and drawn using perforated strip; the cable must be pulled...
High temperature superconducting (HTS) cables are expected to play an important role in modernizing the electric power grid. Significant increase in the fraction of renewable power generation is forcing the society to rethink the structure of electrical power grid in the US and elsewhere. Multi-gigawatt capacity long distance DC power transmission and interconnection of the three US power...
The mechanical response of Twisted Stacked-Tape Cables (TSTC) experiencing large Lorentz loads generated during the operation of high-current, high-field magnets was investigated using finite element analysis. In previous work, the numerical analysis of an untwisted 40-tape TSTC under transverse compression was performed to identify cable configurations able to support the tapes against these...
For the high luminosity upgrade of the large hadron collider the US accelerator research program is developing the quadrupole magnet MQXF wound with a 40 strand (N = 40) Nb3Sn Rutherford cable QXF. During the field ramping of accelerator magnets interstrand coupling currents flow through the crossover- and adjacent-strand contact resistances represented by Rc and Ra, respectively, and a...
