Influence of cable eddy currents on magnetic field harmonics. Revision A

Conference · Wed Jul 01 00:00:00 EDT 1992

OSTI ID:10181581

Ogitsu, T ^[1]; Zhao, Y; Akhmetov, A; Devred, A ^[1]

---

1. Superconducting Super Collider Lab., Dallas, TX (United States)

Several SSC 5-cm-aperture, 15-m-long dipole magnet prototypes exhibit anomalous behavior of their magnetic field harmonics during current ramps at 4 A/s. The anomalies cease when the ramp is stopped and the current is held constant. The magnets also exhibit a dramatic degradation of their quench current as a function of ramp rate, as well as large AC-losses. After reviewing the AC-performance of the anomalous magnets, we develop a model of cable eddy currents, which can simulate the observed field behavior and the measured AC-losses, and which is consistent with the quench start localization of the high ramp-rate quenches.

• Research Organization: Superconducting Super Collider Lab., Dallas, TX (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC35-89ER40486
• OSTI ID: 10181581
• Report Number(s): SSCL-Preprint-134-Rev.A; CONF-9206281-1-Rev.A; ON: DE92040549
• Resource Relation: Conference: ICFA workshop on AC superconductivity,Tsukuba (Japan),23-25 Jun 1992; Other Information: PBD: Jul 1992
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
HARMONICS
MAGNETIC FIELDS
SUPERCONDUCTING CABLES
EDDY CURRENT TESTING
EDDY CURRENTS
SUPERCONDUCTING SUPER COLLIDER
SUPERCONDUCTING MAGNETS
430303
430200
EXPERIMENTAL FACILITIES AND EQUIPMENT
BEAM DYNAMICS, FIELD CALCULATIONS, AND ION OPTICS