Beam Effects on the Cryogenic System of LEP 2

  • Philippe Gayet
  • Dieter Kaiser
  • Gunter Winkler
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 43)

Abstract

The LEP collider was operated during 1996 for the first time with superconducting cavities at the four interaction points. During operation for physics it was observed that the dissipated heat in the cavities is not only a function of the acceleration gradient, but depends also on beam characteristics such as intensity, bunch length and beam current. These beam effects had not been foreseen in the original heat budget of the LEP cryogenic system.

The observations indicating the beam effect and its origin are presented. The available capacity of the refrigerators demonstrates that cryogenics might become a limiting factor for the performance of the LEP collider.

Keywords

Beam Current Power Dissipation Heat Load Cooling Capacity Vapour Quality 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    C. Wyss et al. LEP design report vol. III LEP2, CERN-AC/96–01(LEP2) (1996)Google Scholar
  2. 2.
    G. Cavallari, P. Gayet, G. Geschonke, M. Jimenez, S. Myers, Beam related thermal losses in the LEP SC RF system, CERN LEP2 note 97–40 (1997)Google Scholar

Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • Philippe Gayet
    • 1
  • Dieter Kaiser
    • 1
  • Gunter Winkler
    • 1
  1. 1.LHC DivisionCERNGenevaSwitzerland

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