Development of design options for the port plug components of the ITER core CXRS diagnostic

Krasikov, Yu.; Baross, T.; Biel, W.; Litnovsky, A.; Hawkes, N.; Kiss, G.; Klinkhamer, J.F.F.; Koning, J.F.; Krimmer, A.; Neubauer, O.; Panin, A.

doi:10.1016/j.fusengdes.2011.01.086

Cited by 15 publications

(3 citation statements)

References 5 publications

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“…Massive conducting structures, like the ITER core Charge Exchange Recombination Spectroscopy (cCXRS) port plug ones shown in Fig. 9, give such an example [10,11]. The calculated EM nodal forces are then transferred to the structural models that can have quite different mesh and even slightly different geometry.…”

Section: A Load Transfer Between Em and Structural Modelsmentioning

confidence: 99%

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Approaches to numerical modeling in development process of complex structures for fusion devices

Neubauer

Panin

Czymek

et al. 2013

2013 IEEE 25th Symposium on Fusion Engineering (SOFE)

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Development of components for fusion device normally comprises numerous simulations to validate their design compatibility with the specified loads according to applicable codes and standards. A strategy of multifield finite element analyses is determined by an iterative nature of design process, and a level of a structure complexity dictates analysis approaches and modeling technique. Nowadays powerful software exploiting the strength of modern computers allows simulating structures in a very detailed way, even for some types of coupled field analyses. As some drawback of this tendency, many efficient numerical tools, used in the past, are not frequently engaged. Sometimes huge numerical resources are spent to solve trivial problems. Direct CAD-analysis meshing of structures in all their complexity may mix effects of different importance and may lead to overlooking some key structure features. Computational problems with convergence in nonlinear analyses often make modeling less flexible to design changes. This paper gives examples of engineering simplified modeling made with clear understanding of an analysis goal and a role of simulations in design process, like for the W7-X stellarator busbar system. Engineering methods to perform multifield analysis including electromagnetic transients for some ITER diagnostics are also presented. An engineering material model to calculate steel superconducting structures working in inelastic range is discussed.

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Section: A Load Transfer Between Em and Structural Modelsmentioning

confidence: 99%

“…The EM analysis as a part of multifield study of a shutter option for the ITER cCXRS upper port plug diagnostics [10,11] is presented and discussed. A main structural shell, attached to the ITER vacuum vessel, carries a neutron shielding block (Figs.…”

Section: A Load Transfer Between Em and Structural Modelsmentioning

confidence: 99%

Approaches to numerical modeling in development process of complex structures for fusion devices

Neubauer

Panin

Czymek

et al. 2013

2013 IEEE 25th Symposium on Fusion Engineering (SOFE)

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“…ORSCHUNGSZENTRUM JÜLICH (FZJ), Germany, with partners has been developing concepts for the ITER upperport-plug core-charge-exchange-spectroscopy diagnostic system that represents a labyrinth of optical mirrors [1]. The first mirror (M1), the closest to plasma, is the most vulnerable structure component subjected to depositions that drastically reduce its optical performance.…”

mentioning

confidence: 99%

Structural analysis of a prototype fast shutter for ITER cCXRS diagnostic

Panin

Biel

Krasikov

et al. 2011

2011 IEEE/NPSS 24th Symposium on Fusion Engineering

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Abstract-Optical lifetime of the first mirror is a critical issue for the ITER upper-port-plug core-charge-exchange-spectroscopy diagnostic. A fast shutter is engaged to protect the mirror from depositions between measurements. The prototype shutter will be examined in a test vacuum vessel that is now under development in Forschungszentrum Jülich, Germany. Being located near the plasma, the shutter operates under severe thermal and electromagnetic (EM) loads. The multifield analyses conducted for the shutter are presented in this paper. Since the fast shutter can operate within 0.7 s, its static structural analysis should be accompanied by dynamic studies. This paper gives details about the numerical strategy used for a multifield ANSYS modeling of a complex structure. The shutter structural performance under the service, thermal, and EM loadings is in line with the requirements. A solution for a problem of high local thermostresses revealed by the analysis is proposed. Problems connected with other possible port-plug-shutter layouts are discussed.

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