2008
EMSS 2008 Proceeding
First principles modeling of the large hydron collider?s (LHC) super fluid helium cryogenic circuit
Authors: Rafal Noga, Cesar de Prada
Abstract
The Large Hydron Collider (LHC) at CERN is the largest particle accelerator in the world. It uses more than 1600 superconducting magnets that will be maintained at operational temperature equal to 1.9K by Super fluid Helium Cryogenic Circuit. This document presents a first principle nonlinear model of the circuit to be used in the development process of a Nonlinear Model Predictive Control (NMPC) of LHC Standard Cell temperature. First, general information on the context of the project and the motivation for the development of the model are presented. Then, the Super fluid Helium Cryogenic Circuit is described with details and the modeling process of the circuit is presented step by step. Finally, the model is adjusted with the experimental data, the results of the model simulation are evaluated and the future work is proposed.
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