Conveners
Wed-Af-Or13 - High Field HTS/Hybrid Magnets for Accelerators
- Tiina Salmi (Tampere University of Technology, Finland)
- Tengming Shen (LBNL)
Ac losses and shielding currents affecting field qualities in coated conductors are concerns in accelerator magnets which must be excited repeatedly. We carried out repeated excitation experiments of a test magnet for accelerator applications of coated conductors. The magnet consists of a pair of 4-stacked racetrack coils with iron return yoke at low temperature region. It can generate 2.4 T...
The traditional approach for developing high field magnet technology has been to build a new magnet with some variations in design parameters or in material. Building a high field magnet is time consuming and expensive. This limits the development and demonstration of a new design or technology and/or forces several changes to be made at the same time which limits the clear interpretation of...
In order to address the needs of next generation particle accelerators, high $J_E$ ($>1000$ $A/mm$$^2$ at $5$ $T$ [1], [2]) HTS Bi-2212, with application of novel quench detection and protection methods is utilized in sub-scale accelerator magnets. A series of racetrack coils (RC 1-6) with the same geometry have demonstrated conductor improvements resulting in a factor of four increase in...
In collaboration with Advanced Conductor Technologies, the U.S. National Magnet Development Program is developing REBCO magnets with a goal of generating 5 T dipole fields. We have built several subscale magnets based on the Canted-Cos-Theta (CCT) concept using commercial REBCO Conductor on Round Core (CORC®) wires. The latest magnet C2 has four layers and a designed dipole field of 3 T in an...
In 2018, FRESCA2 dipole magnet, developed within a collaboration between CEA Saclay and CERN to provide a background field for tests of cables and small coils, reached a field of 14.6 T. This represents a new world record field for dipole magnets with a clear aperture. As a continuity of the European project EUCARD-2, CERN aims at exploring accelerator magnet technology up to a 20 T operating...
Shielding-current-induced fields (SCIFs) in magnets wound with coated conductors are one of the most serious problems for application. SCIFs cause changing of magnitude of magnetic field, error field components, and drift of magnetic field during when transport current is constant. Especially, because magnets for accelerator systems are sometimes required to generate precise magnetic field...
