Physical Aspects and Design of the Wendelstein 7-X Divertor

Renner, H.; Sharma, Devendra; Kißlinger, J.; Boscary, J.; Grote, H.; Schneider, R.

doi:10.13182/fst04-a570

Cited by 44 publications

(53 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The type of target element 5S (vertical target modules), 55mm width and 361mm length, armored with 16 CFC tiles, 25mm length each, was studied. The heat load was applied on the 3 middle tiles according to the foreseen deposition pattern [5]. Forced convection was used for the inner surface of the cooling channels with a temperature dependent heat transfer coefficient of…”

Section: Simulation Of the Attachment System Response Under Loadingmentioning

confidence: 99%

Mechanical analysis of the joint between Wendelstein 7-X target elements and the divertor frame structure

Smirnow

Kuchelmeister

Boscary

et al. 2014

Fusion Engineering and Design

View full text Add to dashboard Cite

The target elements of the actively cooled high heat flux (HHF) divertor of Wendelstein 7-X are made of CFC (carbon fibre-reinforced carbon composite) tiles bonded to a CuCrZr heat sink and are mounted onto a support frame. During operation, the power loading will result in the thermal expansion of the target elements. Their attachment to the support frame needs to provide, on the one hand, enough flexibility to allow some movement to release the induced thermal stresses and, on the other hand, to provide enough stiffness to avoid a misalignment of one target element relative to the others. This flexibility is realized by a spring element made of a stack of disc springs together with a sliding support at one of the two or three mounting points. Detailed finite element calculations have shown that the deformation of the heat sink leads to some non-axial deformation of the spring elements. A mechanical test was performed to validate the attachment design under cyclic loading and to measure the deformations typical of the expected deformation of the elements. The outcome of this study is the validation of the design selected for the attachment of the target elements, which survived experimentally the applied mechanical cycling which simulates the thermal cycling under operation.

show abstract

Section: Simulation Of the Attachment System Response Under Loadingmentioning

confidence: 99%

Mechanical analysis of the joint between Wendelstein 7-X target elements and the divertor frame structure

Smirnow

Kuchelmeister

Boscary

et al. 2014

Fusion Engineering and Design

View full text Add to dashboard Cite

show abstract

“…This value was achieved by limiting the angle of incidence of field lines on the target plates to a value below 1-3 [2]. In the open divertor geometry of W7-X, the vertical and horizontal target plates form the pumping slit.…”

Section: Introductionmentioning

confidence: 99%

Pre-series and testing route for the serial fabrication of W7-X target elements

Boscary¹,

Greuner²,

Friedrich³

et al. 2009

Fusion Engineering and Design

View full text Add to dashboard Cite

“…The highly heat-loaded area of the target plates of the WENDELSTEIN 7-X (W7-X) divertor [1] spans a surface of 19 m 2 . It is formed by 890 water-cooled target elements (TEs) of 14 different types, with a length ranging from 250 to 595 mm, a maximum width between 50 and 61.5 mm, and a total thickness of 30 mm [2].…”

Section: Introductionmentioning

confidence: 99%