Thermal analysis of Test Divertor Unit Scraper Element for Wendelstein 7-X

被引：0

作者：

Lumsdaine, Arnold ^{[1
]}

Lore, Jeremy ^{[1
]}

McGinnis, Dean ^{[1
]}

Fellinger, Joris ^{[2
]}

Loesser, Douglas ^{[3
]}

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA

[2] Max Planck Inst Plasma Phys, Greifswald, Germany

[3] Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA

来源：

FUSION ENGINEERING AND DESIGN | 2018年 / 136卷

关键词：

Wendelstein; 7-X; Divertor; High heat-flux; Plasma facing component; Modeling and simulation; DESIGN;

D O I：

10.1016/j.fusengdes.2018.04.048

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The Wendelstein-7X stellarator will go through three operational phases, with successively more energy as more complex divertors are installed. The first operational phase operated without a divertor, instead using five limiters (one in each of the five field periods), the second phase uses ten uncooled test divertor units (TDU), and the third will include an actively cooled divertor. Simulations of plasma operation have shown that the evolution of a toroidal current can lead to significant heat fluxes sweeping across sensitive regions in the divertor, possibly exceeding their qualified limit. A "Scraper Element" (SE) has been proposed to protect these sensitive divertor regions. To examine the effectiveness of this high heat-flux SE, a TDU Scraper Element (TDU-SE) is scheduled to operate with the TDU. A thermal analysis has been performed to correlate to measurements to be obtained during operation to evaluate the location and intensity of the convective plasma flux. The analysis will give an understanding of what is occurring at the plasma edge. It will also allow for a quick evaluation of the safety margin during initial, low power pulses so that the experiment can nimbly move to higher power operation.

引用

页码：964 / 969

页数：6

共 16 条

[1] Development activities of the high heat flux scraper element [J].

Boscary, J. ;

Lore, J. ;

Lumsdaine, A. ;

Maier, M. ;

McGinnis, D. ;

Peacock, A. ;

Tretter, J. .

FUSION ENGINEERING AND DESIGN, 2015, 98-99 :1231-1234

[2]

Boscary J., IEEE T PLASMA SCI

[3]

Boscary J., FUSION ENG DES, P109

[4] Technical challenges in the construction of the steady-state stellarator Wendelstein 7-X [J].

Bosch, H. -S. ;

Wolf, R. C. ;

Andreeva, T. ;

Baldzuhn, J. ;

Birus, D. ;

Bluhm, T. ;

Braeuer, T. ;

Braune, H. ;

Bykov, V. ;

Cardella, A. ;

Durodie, F. ;

Endler, M. ;

Erckmann, V. ;

Gantenbein, G. ;

Hartmann, D. ;

Hathiramani, D. ;

Heimann, P. ;

Heinemann, B. ;

Hennig, C. ;

Hirsch, M. ;

Holtum, D. ;

Jagielski, J. ;

Jelonnek, J. ;

Kasparek, W. ;

Klinger, T. ;

Koenig, R. ;

Kornejew, P. ;

Kroiss, H. ;

Krom, J. G. ;

Kuehner, G. ;

Laqua, H. ;

Laqua, H. P. ;

Lechte, C. ;

Lewerentz, M. ;

Maier, J. ;

McNeely, P. ;

Messiaen, A. ;

Michel, G. ;

Ongena, J. ;

Peacock, A. ;

Pedersen, T. S. ;

Riedl, R. ;

Riemann, H. ;

Rong, P. ;

Rust, N. ;

Schacht, J. ;

Schauer, F. ;

Schroeder, R. ;

Schweer, B. ;

Spring, A. .

NUCLEAR FUSION, 2013, 53 (12)

[5] Thermal-hydraulics modeling for prototype testing of the W7-X high heat flux scraper element [J].

Clark, Emily ;

Lumsdaine, Arnold ;

Boscary, Jean ;

Greuner, Henri ;

Ekici, Kivanc .

FUSION ENGINEERING AND DESIGN, 2017, 121 :211-217

[6] Integration of uncooled scraper elements and its diagnostics into Wendelstein 7-X [J].

Fellinger, Joris ;

Loesser, Doug ;

Neilson, Hutch ;

Lumsdaine, Arnie ;

McGinnis, Dean ;

Lore, Jeremy ;

Wurden, Glen ;

Wendorf, Joerg ;

Klose, Soeren ;

Wenzel, Uwe ;

Grosser, Klaus ;

Rummel, Kerstin ;

Hoelbe, Hauke ;

Pedersen, Thomas Sunn ;

Mitchell, John ;

Sibilia, Marc ;

Zhang, Han ;

Titus, Peter .

FUSION ENGINEERING AND DESIGN, 2017, 124 :226-230

[7] Aspects of steady-state operation of the Wendelstein 7-X stellarator [J].

Geiger, J. ;

Wolf, R. C. ;

Beidler, C. ;

Cardella, A. ;

Chlechowitz, E. ;

Erckmann, V. ;

Gantenbein, G. ;

Hathiramani, D. ;

Hirsch, M. ;

Kasparek, W. ;

Kisslinger, J. ;

Koenig, R. ;

Kornejew, P. ;

Laqua, H. P. ;

Lechte, C. ;

Lore, J. ;

Lumsdaine, A. ;

Maassberg, H. ;

Marushchenko, N. B. ;

Michel, G. ;

Otte, M. ;

Peacock, A. ;

Pedersen, T. Sunn ;

Thumm, M. ;

Turkin, Y. ;

Werner, A. ;

Zhang, D. .

PLASMA PHYSICS AND CONTROLLED FUSION, 2013, 55 (01)

[8] Access to edge scenarios for testing a scraper element in early operation phases of Wendelstein 7-X [J].

Hoelbe, H. ;

Pedersen, T. Sunn ;

Geiger, J. ;

Bozhenkov, S. ;

Koenig, R. ;

Feng, Y. ;

Lore, J. ;

Lumsdaine, A. .

NUCLEAR FUSION, 2016, 56 (02)

[9]

Lore J. D., IEEE T PLASMA SCI

[10] Design and Analysis of Divertor Scraper Elements for the W7-X Stellarator [J].

Lore, Jeremy D. ;

Andreeva, Tamara ;

Boscary, Jean ;

Bozhenkov, Sergey ;

Geiger, Joachim ;

Harris, Jeffrey H. ;

Hoelbe, Hauke ;

Lumsdaine, Arnold ;

McGinnis, Dean ;

Peacock, Alan ;

Tipton, Joseph .

IEEE TRANSACTIONS ON PLASMA SCIENCE, 2014, 42 (03) :539-544

← 1 2 →