| Article | |
| Title | Effect of Strand Damage in Nb3Sn Rutherford Cables on the Quench Propagation in Accelerator Magnets |
| Author(s) | Keijzer, Ruben (CERN ; Twente U., Enschede) ; Willering, Gerard (CERN) ; Dhalle, Marc (Twente U., Enschede) ; ten Kate, Herman (Twente U., Enschede) |
| Publication | 2023 |
| Number of pages | 5 |
| In: | IEEE Trans. Appl. Supercond. 33 (2023) 1-5 |
| DOI | 10.1109/tasc.2023.3244140 |
| Subject category | Accelerators and Storage Rings |
| Abstract | Accelerator magnets employing Nb$_3$Sn Rutherford cables are more susceptible to conductor degradation than Nb-Ti magnets. Recent measurements on a Nb$_3$Sn accelerator magnet have revealed unexpected behaviour such as decaying voltages at constant current plateaus of V-I measurements, inverse ramp rate and temperature dependence of quench currents, and anomalous quench propagation measured by so-called quench antennas. Numerical modelling has shown that these anomalies can be explained by an inhomogeneous degradation in the Rutherford cable, in which a subset of strands is fully or partially degraded. In this paper, we study how this type of degradation can affect the early stages of quench propagation. With the aid of a network model, we show how quench antenna signals can be used to diagnose inhomogeneous conductor degradation in the Rutherford cable. |
| Copyright/License | publication: (License: CC-BY-4.0) |
Corresponding record in: Inspire
Registro creado el 2023-02-28, última modificación el 2023-03-22
