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Overview and status of ITER Cryostat manufacturing

Research paper by Anil K. Bhardwaj, Girish Gupta, Rajnikant Prajapati, Vaibhav Joshi, Mitul Patel, Jagrut Bhavsar, Vipul More, Mukesh Jindal, Avik Bhattacharya, Gourav Jogi, Amit Palaliya, Saroj Jha, Manish Pandey, Dileep Shukla, Ganesh Iyer, et al.

Indexed on: 14 Mar '16Published on: 17 Feb '16Published in: Fusion Engineering and Design



Abstract

One of ITER-India's commitments to the ITER Organization is procurement of the ITER Cryostat. It is a large vacuum vessel (∼29 m dia. and ∼29 m height), which is made up of 304/304 L dual marked stainless steel and has a total mass over 3500 t. The thickness of the vessel wall varies from 50 mm to 190 mm. It is one of the largest and the heaviest fully welded stainless steel vacuum chambers in the world which provides vacuum thermal insulation for the superconducting magnets operating at 4.5 K and for the thermal shield operating at 80 K. It also mechanically supports the magnet system along with the vacuum vessel (VV). The cryostat is designed and constructed according to ASME Section-VIII Division-2 with additional ITER Vacuum Handbook requirements and it is classified as protection important component (PIC-2).

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