| Title |
Nonlinear System Identification of Superconducting Magnets of RHIC at BNL |
| Authors |
- P. Chitnis
Stony Brook University, Stony Brook, New York, USA
- K.A. Brown
BNL, Upton, Long Island, New York, USA
|
| Abstract |
The Quench Detection System (QDS) of RHIC detects the Superconducting (SC) magnet quenches by voltage sensing. The real-time voltage across the SC magnet is compared with a predicted voltage from a behavioral model, a deviation from which triggers the quench event and energy extraction. Due to the limitations of the magnet model, many false quench events are generated that affect the RHIC availability. This work is targeted towards remodeling the magnets through nonlinear system identification for the improvement in QDS reliability. The nonlinear electrical behavior of the SC magnets is investigated by statistical data analysis of magnet current and voltage signals. Many data cleaning techniques are employed to reduce the noise in the observed data. Piecewise regression has been used to examine the saturation effects in magnet inductance. The goodness-of-fit of the model is assessed by field testing and comprehensive residual analysis. Finally a new model is suggested for the magnets to be implemented for more accurate results.
|
| Funding |
Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy. |
| Paper |
download MOM310.PDF [0.501 MB / 4 pages] |
| Slides |
download MOM310_TALK.PDF [0.826 MB] |
| Poster |
download MOM310_POSTER.PDF [0.985 MB] |
| Conference |
ICALEPCS2015, Melbourne, Australia |
| Series |
International Conference on Accelerator and Large Experimental Physics Control Systems (15th) |
| Proceedings |
Link to full ICALEPCS2015 Proccedings |
| Session |
Mini orals with poster |
| Date |
19-Oct-15 17:00–17:30 |
| Main Classification |
Systems Engineering, Project Management |
| Keywords |
superconducting-magnet, diagnostics, real-time, collider, booster |
| Publisher |
JACoW, Geneva, Switzerland |
| Editors |
Lou Corvetti (AS, Clayton, Australia); Kathleen Riches (SLSA, Clayton, Australia); Volker RW Schaa (GSI, Darmstadt, Germany) |
| ISBN |
978-3-95450-148-9 |
| Published |
December 2015 |
| Copyright |
|
