The cryomodule test stand at the European Spallation Source | Zendy

Wolfgang Hees | Zendy; J. G. Weisend | Zendy; X. L. Wang | Zendy; T. Köttig | Zendy

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The cryomodule test stand at the European Spallation Source

Author(s) -

Wolfgang Hees,

J. G. Weisend,

X. L. Wang,

T. Köttig

Publication year - 2014

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4860764

Subject(s) - spallation , nuclear engineering , spallation neutron source , superconducting radio frequency , nuclear physics , linear particle accelerator , helium , transfer line , physics , superfluid helium 4 , particle accelerator , environmental science , computer science , neutron , engineering , mechanical engineering , atomic physics , beam (structure) , optics

The European Spallation Source (ESS) is an intergovernmental project building a multidisciplinary research laboratory based upon the world's most powerful neutron source to be built in Lund, Sweden. The ESS will use a linear accelerator which will deliver protons with 5 MW of power to the target at 2.5 GeV with a nominal current of 50 mA. The superconducting part of the linac consists of over 150 niobium cavities cooled with superfluid helium at 2 K. A dedicated cryoplant will supply the cryomodules with single phase helium through an external cryogenic transfer line. The elliptical cavity cryomodules will undergo their site acceptance tests at the ESS cryomodule test stand in Lund. This test stand will use a 4.5 K cryoplant and warm sub-atmospheric compression to supply the 2 K helium. We will show the requirements for the test stand, a layout proposal and discuss the factors determining the required cryogenic capacity, test sequence and schedule

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