The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Chitnis, P. AU - Brown, K.A. ED - Corvetti, Lou ED - Riches, Kathleen ED - Schaa, Volker RW TI - Nonlinear System Identification of Superconducting Magnets of RHIC at BNL J2 - Proc. of ICALEPCS2015, Melbourne, Australia, 17-23 October 2015 C1 - Melbourne, Australia T2 - International Conference on Accelerator and Large Experimental Physics Control Systems T3 - 15 LA - english AB - 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. PB - JACoW CP - Geneva, Switzerland SP - 90 EP - 93 KW - superconducting-magnet KW - diagnostics KW - real-time KW - collider KW - booster DA - 2015/12 PY - 2015 SN - 978-3-95450-148-9 DO - 10.18429/JACoW-ICALEPCS2015-MOM310 UR - http://jacow.org/icalepcs2015/papers/mom310.pdf ER -