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Title SPIRAL2 Cryogenic System Thermodynamic Behavior Prediction Through Dynamic Modeling
  • A.V. Vassal, P.-E. Bernaudin, A. Ghribi
    GANIL, Caen, France
  • P.-E. Bernaudin
    CEA/DSM/IRFU, France
  • P. Bonnay, F. Bonne
    CEA/INAC, Grenoble Cedex 9, France
  • F. Millet
    CEA, Grenoble, France
Abstract SPIRAL 2 (Caen, France) is a state of the art superconducting linear accelerator composed of 26 quarter wave accelerating cavities. Each cavity is plunged in a liquid helium bath at 4.4 K itself surrounded by a thermal shield at 70 K. In this paper, a dynamic model of the cryogenic systemof the LINAC is proposed. Thismodel simulates the dynamic behaviour of the 19 cryomodules and their respective valves box connected through the cryodistribution. Model accuracy is evaluated through a comparison between simulation and experimental data. Using the model we should be able to predict the behaviour of the cryogenic system for different beam operating conditions of the accelerator. The model also highlights the link between the cryogenic system and the cavity RF losses through a dynamic estimator of those RF losses in the cavity walls. The latter could be used as a rough estimator of the quality factor of a cavity.
Paper download TUPO019.PDF [0.556 MB / 4 pages]
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Conference LINAC2018
Series Linear Accelerator Conference (29th)
Location Beijing, China
Date 16-21 September 2018
Publisher JACoW Publishing, Geneva, Switzerland
Editorial Board Guoxi Pei (IHEP, Beijing, China); Volker RW Schaa (GSI, Darmstadt, Germany); Yong Ho Chin (KEK, Tsukuba, Japan); Shinian Fu (IHEP, Beijing, China); Ning Zhao (IHEP, Beijing, China)
Online ISBN 978-3-95450-194-6
Online ISSN 2226-0366
Received 13 September 2018
Accepted 20 September 2018
Issue Date 18 January 2019
DOI doi:10.18429/JACoW-LINAC2018-TUPO019
Creative Commons CC logoPublished by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.