ESS Accelerator Cryoplant Process Design

Cryogenic Engineering Conference 2015

材料科学;物理学

Wang, X.L.^1 ; Arnold, P.^1 ; Hees, W.^1 ; Hildenbeutel, J.^2 ; Weisend, J.G.^1

European Spallation Source ESS AB, Lund

SE-22100, Sweden^1

Linde Kryotechnick AG, Pfungen

8422, Switzerland^2

关键词: Cooling requirements;    Distribution systems;    European spallation sources;    International collaborations;    Machine concepts;    Main parameters;    Nominal currents;    System configurations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/101/1/012012/pdf
DOI  :  10.1088/1757-899X/101/1/012012

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The European Spallation Source (ESS) is a neutron-scattering facility being built with extensive international collaboration in Lund, Sweden. The ESS accelerator will deliver protons with 5 MW of power to the target at 2.0 GeV, with a nominal current of 62.5 mA. The superconducting part of the accelerator is about 300 meters long and contains 43 cryomodules. The ESS accelerator cryoplant (ACCP) will provide the cooling for the cryomodules and the cryogenic distribution system that delivers the helium to the cryomodules. The ACCP will cover three cryogenic circuits: Bath cooling for the cavities at 2 K, the thermal shields at around 40 K and the power couplers thermalisation with 4.5 K forced helium cooling. The open competitive bid for the ACCP took place in 2014 with Linde Kryotechnik AG being selected as the vendor. This paper summarizes the progress in the ACCP development and engineering. Current status including final cooling requirements, preliminary process design, system configuration, machine concept and layout, main parameters and features, solution for the acceptance tests, exergy analysis and efficiency is presented.