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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Bullard, D. Harwood, L. Hiatt, T. Karn, J. Martin, E. Oren, W. Rode, C. Sulllivan, K. Wines, R. Wiseman, M. |
| Copyright Year | 1999 |
| Description | Author affiliation: Thomas Jefferson Nat. Accel. Facility, Newport News, VA, USA (Bullard, D.) |
| Abstract | The CEBAF accelerator at the Thomas Jefferson National Accelerator Facility contains 415 resistive dipoles in the recirculation arcs and transport lines. These dipoles were originally designed and magnetically mapped to support the operation of the accelerator at 6 GeV. Recent interests in upgrading the CEBAF energy beyond 6 GeV prompted a study into operating the dipoles beyond their design limits. Finite element modeling was performed to quantify saturation effects at higher currents and to test simple modifications to improve magnetic performance. For confirmation, various setups were prototyped and magnetically measured. Measurement results agreed with finite element models and showed that saturation could be reduced to manageable levels. It was found that the most populous dipole families could be modified to reach twice their design field with minimal cost and effort. At these higher fields, the magnets operate at a reasonable thermal state with minimal saturation losses and little degradation in field quality. Work continues on studying the smaller populations of dipoles to determine their performance at higher fields. |
| Starting Page | 3309 |
| Ending Page | 3311 |
| File Size | 324704 |
| Page Count | 3 |
| File Format | |
| ISBN | 0780355733 |
| DOI | 10.1109/PAC.1999.792286 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1999-03-27 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Coils Paints Saturation magnetization Leg Steel Tin Nuclear magnetic resonance Packaging Magnetic field measurement Fasteners |
| Content Type | Text |
| Resource Type | Article |
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