The ESS Spoke cryomodule and its test valve box

26th International Cryogenic Engineering Conference & International Cryogenic Materials Conference 2016

材料科学;物理学

Duthil, P.^1 ; Pierens, M.^1 ; Reynet, D.^1 ; Brault, S.^1 ; Chatelet, F.^1 ; Duchesne, P.^1 ; Olry, G.^1 ; Gandolfo, N.^1 ; Bousson, S.^1 ; Darve, C.^2 ; Ellias, N.^2 ; Fydrych, F.^2

Institut de Physique Nucléaire d'Orsay, IPNO CNRS, IN2P3-Univ. Paris Sud, France^1

European Spallation Source, Lund, Sweden^2

关键词: Cryogenic environment;    European spallation sources;    Pulsed fields;    Radiofrequency technology;    Test site;    Thermal shields;    Uppsala University;    Valve box;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/171/1/012037/pdf
DOI  :  10.1088/1757-899X/171/1/012037

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The European Spallation Source project aims at being the most powerful neutron source feeding multidisplinary researches. Based on superconducting radiofrequency technologies, the linear accelerator will operate for the first time a 56 meter long section of niobium double Spoke cavities. Paired in 13 cryomodules, each cavity will generate an accelerating pulsed field of 9MV/m. A prototype cryomodule housing two superconducting Spoke cavities and their RF power couplers is now being fabricated and assembled. It provides the cryogenic environment for their operation in a 2K saturated superfluid helium bath: a 50 K thermal shield, a cold magnetic shield, and integrates all the interfaces necessary to be operational within the linac machine. This prototype will be tested in 2016 at IPNO site and then at Uppsala university FREIA facilities. A valve box was designed to take into account the specific features of this prototype cryomodule and of both test sites. This valve box is also considered as a prototype of the cryogenic distribution of the linac Spoke section. This element will then be used for the tests of the series cryomodules.