Overview and status of ITER Cryostat manufacturing

Bhardwaj, Anil; Gupta, Girish Kumar; Prajapati, Rajnikant; Joshi, Vaibhav; Patel, Milind; Bhavsar, Jagrut; More, Vipul; Jindal, Mukesh; Bhattacharya, Avik; Jogi, Gourav; Palaliya, Amit; Jha, Saroj Kumar; Pandey, Manish Kumar; Shukla, Dileep; Iyer, Ganesh; Jadhav, Pandurang; Goyal, Dipesh; Desai, Anish; Sekachev, I.; Vitupier, Guillaume; Xie, Hui; Tailhardat, O.

doi:10.1016/j.fusengdes.2015.12.028

Cited by 6 publications

(2 citation statements)

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“…The research on the vacuum cryostat truly began with the advent of fully superconducting tokamak devices, mainly including the ITER cryostat [19,20], CFETR cryostat [21], EAST cryostat [22], and the JT-60SA cryostat [23,24]. Currently, engineering design investigations mostly involve response characteristics like displacement response and stress response, under specific or combined operational conditions, such as normal operation conditions (NO) [25], seismic events [24], ingress of coolant event (ICE) [26], and electromagnetic events (EMs) [27].…”

Section: Research Status Of Cryostat Designmentioning

confidence: 99%

Research on the efficient process-oriented structural optimization method of the large-scale vacuum cryostat for fusion reactors

Yu,

Xu,

Chen

et al. 2024

Nucl. Fusion

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An efficient optimization design for large and complex components of fusion reactor is crucial to address the engineering design requirements and further promote technical standardization. Based on research status, current engineering designs for fusion reactors have some deficiencies such as time and energy wastes, inefficiency and the difficulties in covering the typical “multi-variable, multi-objective” design requirements. They are pressing and common problems that urgently need to be overcome. To deal with the aforementioned technical challenges, it is vitally important to design an efficient, precise, and normalized approach tailored for the development of future fusion reactors. Therefore, this paper proposes a process-oriented optimization design method, which involves Coupled external parameterized modeling, Experimental points design, Response surface optimization and Structural integrity validation (CERS), to improve currently inefficient design methods. And the vacuum cryostat, the largest and complex component of tokamak, is taken as an example to present the basic procedures of CERS. Firstly, the functions, basic structures, load types, analysis methods and verification criteria of the cryostat are presented in detail. And then real-time data interaction between external global parametric variables and ANSYS via coupling is established by CERS, which achieves parametric modeling of cryostat and the efficient experiment point design and optimization analysis with multi-variables and multi-objectives in an automatic way. Subsequently, this study demonstrates the significance and sensitivity of various structural parameters of cryostat from such objectives as maximum deformation, maximum equivalent stress, and total mass. And the optimal set of its structural parameters is obtained by establishing mathematical optimization model. Finally, the structural integrity is verified. The result indicates that the optimized cryostat maintains a minimum safety margin of 23% and will not suffer fatigue damage under various load events during its service. Besides, the nonlinear buckling load multiplier ∅ is 5.4, obtained by analyzing the load-displacement curve of cryostat according to the zero-curvature criterion. This shows that the designed cryostat is stable enough. The proposed method is simple, efficient and reliable which can be applied to both cryostat and other complex components of fusion reactors in the engineering design fields. It has great value of practically technical reference and can further promote the standardization of engineering design technology for future fusion reactor.

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Section: Research Status Of Cryostat Designmentioning

confidence: 99%

Research on the efficient process-oriented structural optimization method of the large-scale vacuum cryostat for fusion reactors

Yu,

Xu,

Chen

et al. 2024

Nucl. Fusion

View full text Add to dashboard Cite

show abstract

“…The height and diameter of the ITER cryostat (Sekachev et al, 2015;Bhardwaj et al, 2016 ) are both ~30 m, while the structure, including the thermal shields, weighs ~4000 tonnes. With an internal volume of 16,000 m 3 , this stainless steel pressure vessel provides the high vacuum (~10 -4 Pa), cryogenic environment for the ITER tokamak core components, in particular the superconducting magnets.…”

Section: Tokamak Core Systemsmentioning

confidence: 99%