title: Note: A simple model for thermal management in solenoids.
abstract: We describe a model of the dynamical temperature evolution in a solenoid winding. A simple finite element analysis is calibrated by accurately measuring the thermally induced resistance change of the solenoid, thus obviating the need for accurate knowledge of the mean thermal conductivity of the windings. The model predicts quasi thermal runaway for relatively modest current increases from the normal operating conditions. We demonstrate the application of this model to determine the maximum current that can be safely applied to solenoids used for helium spin-echo measurements.
authors.affiliation: The Cavendish Laboratory, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom.
authors.forename: E M
authors.initials: EM
authors.lastname: McIntosh
authors.forename: J
authors.initials: J
authors.lastname: Ellis