Cryogenic system configuration for the International Linear Collider (ILC) at mountainous site

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

材料科学;物理学

Nakai, H.^1 ; Okamura, T.^1 ; Delikaris, D.^2 ; Peterson, T.^3 ; Yamamoto, A.^1

High Energy Accelerator Research Organization (KEK), Japan^1

European Organization for Nuclear Research, CERN, Switzerland^2

Fermi National Accelerator Laboratory, United States^3

关键词: Cold boxes;    Cryogenic system;    Cryoplants;    Helium compressors;    International Linear Collider;    Surface area;    Technical design;    Total construction costs;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/171/1/012036/pdf
DOI  :  10.1088/1757-899X/171/1/012036

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The International Linear Collider (ILC) plans to make use of ten cryoplants for its main linacs, each providing 19 kW at 4.5 K equivalent and among of it 3.6 kW at 2 K. Each cryoplant will consist of various cryogenic components such as a 4.5 K refrigerator cold box, a 2 K refrigerator cold box, and helium compressors and so on. In the technical design report (TDR) of the ILC, due to the mountainous topology, almost all cryogenic components would be installed in underground cryogenic caverns next to the main linac tunnels and only cooling towers on surface area. However, we would like to find a more effective and sophisticated configuration of the cryoplant components (cryogenic configuration). Under several constraints of technical, geographical, and environmental points of view, the cryogenic configuration should be considered carefully to satisfy such various conditions. After discussions on this topic conducted at various workshops and conferences, an updated cryogenic configuration is suggested. The proposed updated configuration may affect the total construction cost of the ILC and the entire structure of the ILC conventional facilities. The updated cryogenic configuration is presented and the on-going discussions with the conventional facilities and siting (CFS) colleagues for further improvement of the cryogenic configuration is introduced.