In-Vessel Cryo Pump for Asdex Upgrade Divertor Ii

Streibl, B.; Deschka, S.; Gruber, O.; Juettner, B.; Lang, P. T.; Mattes, K; Pautasso, G.; Perchermeier, J.; Schneider, Hendrik; Seidel, U.; Suttrop, W.; Weissgerber, M.

doi:10.1016/b978-0-444-82762-3.50077-x

Cited by 5 publications

(3 citation statements)

References 2 publications

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“…Sub-divertor structures, including turbopump, cryopump and neutral baffles equals to those in [11,12] are considered. The albedo for the turbopump surface is 0.92 and for the cryopump is 0.987, giving a pumping speed for the cryopump ∼100 m 3 s −1 and ∼14 m 3 s −1 [11,13] for the turbopump. The kotov-2008 atomic reactions [14] are used in EIRENE for volumetric process.…”

Section: Modeling Setupmentioning

confidence: 99%

SOLPS-ITER modeling of ASDEX Upgrade L-mode detachment states

Wu¹,

Subba²,

Wischmeier³

et al. 2021

Plasma Phys. Control. Fusion

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SOLPS-ITER is used to model ASDEX Upgrade L-mode detachment states including the onset of detachment, the fluctuating detachment, and the complete detachment states, considering drifts and mimicking filamentary convective transport with a radial outward velocity in the low field side. The effect of drifts, perpendicular outward convection and core boundary conditions on the numerical solution is presented. The modeling results are validated against experimental data. We find a good agreement of particle flux at the inner target between modeling results and experimental data. On the opposite, at the outer target computations underestimate measured particle flux by a factor of about 2 ∼ 3 in the onset of detachment and the fluctuating detachment states.

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Section: Modeling Setupmentioning

confidence: 99%

SOLPS-ITER modeling of ASDEX Upgrade L-mode detachment states

Wu¹,

Subba²,

Wischmeier³

et al. 2021

Plasma Phys. Control. Fusion

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“…Fig. 3 shows the cross section of a CVP unit, which is based in design and manufacture on [4]. All its components are made from austenitic steel (sheets 1.4429, tubes 1.4435).…”

Section: Cryo Vacuum Pumpmentioning

confidence: 99%

Manufacturing of the Wendelstein 7-X divertor and wall protection

Benhard

Streibl

Boscary

et al. 2005

Fusion Engineering and Design

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“…Consequently, a cryo pump will be installed together with the new divertor structure. The cryo pump in the lower divertor[7,8] has a pumping speed of 100 m 3 /s. It is placed at major radius of R = 2.2 m and is toroidally distributed over about 70% of the toroidal circumference.…”

mentioning

confidence: 99%

An optimized upper divertor with divertor-coils to study enhanced divertor configurations in ASDEX Upgrade

Herrmann

Teschke

Zammuto

et al. 2017

Fusion Engineering and Design

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A new upper divertor with in-vessel coils to investigate 'advanced' magnetic configurations will be installed in ASDEX Upgrade. 10 'Advanced' magnetic configurations are part of a risk mitigation strategy should the conventional divertor configuration approach not 11 be applicable for future fusion reactors. The concept of the new upper divertor, Div-IIo, consists of an outer divertor with embedded 12 divertor coils, an inner divertor and a cryo pump with 15 m 3 /s effective pumping speed in the private flux region. The new divertor 13 coils will be designed for 50 kAt and can be operated with 5 s plateau phase. This paper presents the design concept of the divertor 14 and coil support structure, the coils and the cryo pump. In addition the forces to the divertor structure due to normal operation and 15 during disruptions are discussed.

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In-Vessel Cryo Pump for Asdex Upgrade Divertor Ii

Cited by 5 publications

References 2 publications

SOLPS-ITER modeling of ASDEX Upgrade L-mode detachment states

SOLPS-ITER modeling of ASDEX Upgrade L-mode detachment states

Manufacturing of the Wendelstein 7-X divertor and wall protection

An optimized upper divertor with divertor-coils to study enhanced divertor configurations in ASDEX Upgrade

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