Conveners
C4OrB - Superconducting Magnet Systems
- Ram Dhuley (FNAL)
- Robert Duckworth (ORNL)
The High Luminosity LHC (HL-LHC) is a project aiming to upgrade the LHC collider after 2020-2025 in order to increase the integrated luminosity by about one order of magnitude and extend the physics production until 2035. An upgrade of the focusing triplets insertion system for the Atlas and CMS experiments is foreseen using superconducting magnets operating in a pressurised superfluid helium...
At CERN in collaboration with various high energy physics partners, design studies for the proposed Future Circular Collider are underway and cover new electron-positron and proton-proton colliders. A 100 km long circular tunnel is foreseen featuring caverns for four general purpose detectors probing the e-e+ and p-p collisions. The design effort shall lead to a conceptual design report by the...
A second-generation cryocooler-based cryostat has been designed and built to support a new helically wound superconducting undulator (SCU) magnet for the Advanced Photon Source (APS) at Argonne National Laboratory (ANL). The design represents an evolution of existing SCU cryostats currently in operation in the APS storage ring. Value engineering and lessons learned have resulted in a...
Most of the wiggler and undulator magnets that are used for storage rings and free electron lasers are room temperature permanent magnets. Superconducting wiggler and undulator magnets have been built, but their performance has been limited by the engineering current density of superconductors used to fabricate the coils. Superconducting undulators must have a small gap, which can be a...
The ITER Central Solenoid Model Coil (CSMC) is a superconducting magnet, layer-wound two-in-hand using Nb3Sn cable-in-conduit conductors (CICCs) with the central channel typical of ITER magnets, operating since ~15 years at the National Institutes for Quantum and Radiological Science and Technology, Naka, Japan. Six conductors (out of the 36 needed for the 18 CSMC layers) are instrumented with...
A superconducting segment coil of whole-body-MRI-relevant size was developed and tested for its overall performance, with subsequent testing of induced normal zone formation, quench propagation, and protection. The coil had a 909 mm outer diameter (OD), with a winding cross section of 50 mm (height) by 25 mm (radial). It was wound with 22 layers (29 turns per layer) of multifilamentary MgB2...
Cable-in-conduit has been used to advantage for superconducting windings for tokomaks, NMR spectrometers, and superconducting energy storage for many years. Beginning with the Nuclotron at Dubna and then the SIS100 ring at GSI, a ‘cable-outside-conduit- has been used successfully for accelerator dipoles.
The Accelerator Research Lab has developed a NbTi cable-in-conduit for use in collider...
In this talk we will probe characteristics and failure mechanisms of composite superconductors during a quench, arriving at the conclusion that strain control of composite superconductors is the key to prevent degradation of superconductors within a superconducting magnet during a quench. Experimental data and analysis will be given to support the arguments that for Nb3Sn wire, Bi-2212 wire,...
