Neutron Irradiation Tests of Calibrated Cryogenic Sensors at Low Temperatures

  • T. Junquera
  • J. F. Amand
  • J. P. Thermeau
  • J. Casas-Cubillos
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 43)

Abstract

This paper presents the advancement of a program being carried in view of selecting the cryogenic temperature sensors to be used in the LHC accelerator. About 10,000 sensors will be installed around the 26.6 km LHC ring, and most of them will be exposed to high radiation doses during the accelerator lifetime. The following thermometric sensors : carbon resistors, thin films, and Pt, are exposed to high neutron fluences (> 1015 n/cm2) at the ISN (Grenoble, France) Cryogenic Irradiation Test Facility in which a cryostat is placed in a shielded irradiation vault where a 20 MeV deuteron beam hits a Be target resulting in a well collimated and intense neutron beam. The cryostat, the on-line acquisition system, the temperature references and the main characteristics of the irradiation facility are described. The main interest of this set-up is its ability to monitor on-line the evolution of the sensors by comparing its readout with temperature references that are in principle insensitive to the neutron radiation (i.e. Argon gas bulbs when working at about 84 K, and below 4.5 K, either helium gas bulbs or the saturation pressure of the superfluid liquid helium bath). The resistance shifts of the different sensors at liquid helium temperatures are presented.

Keywords

Neutron Beam Neutron Dose Nickel Foil Carbon Resistor Beryllium Target 
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.
    L.R. Evans « The Large Hadron Collider », Particle Accelerator Conference (May 1995) Dallas, USAGoogle Scholar
  2. 2.
    K.M. Potter, H. Schonbacher, GR. Stevenson. CERN-LHC report #18, November 1995Google Scholar
  3. 3.
    D. Scott Holmes, S. Scott Courts, CEC-ICMC (July 1995), Columbus USA.Google Scholar
  4. 4.
    V.I. Datskov and J. G. Weisend II, Cryogenics, vol.34, p. 425.Google Scholar
  5. 5.
    LHC Conceptual Design Report, report CERN/AC/95–05, October 1995.Google Scholar
  6. 6.
    C. Balle, J. Casas-Cubillos, CEC-ICMC (July 1995), Columbus USA.Google Scholar
  7. 7.
    J. Collot et al. Nuclear Instruments and Methods A vol. 350 (1994) p. 525.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • T. Junquera
    • 1
  • J. F. Amand
    • 1
  • J. P. Thermeau
    • 1
  • J. Casas-Cubillos
    • 2
  1. 1.Institut de Physique NucléaireCNRS-IN2P3OrsayFrance
  2. 2.CERNGeneva 23Switzerland

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