TY - JOUR
T1 - First results from divertor operation in Wendelstein 7-X
AU - Pedersen, Thomas Sunn
AU - König, Ralf
AU - Krychowiak, Maciej
AU - Jakubowski, Marcin
AU - Baldzuhn, Jürgen
AU - Bozhenkov, Sergey
AU - Fuchert, Golo
AU - Langenberg, Andreas
AU - Niemann, Holger
AU - Zhang, Daihong
AU - Rahbarnia, Kian
AU - Bosch, Hans Stephan
AU - Kazakov, Yevgen
AU - Brezinsek, Sebastijan
AU - Gao, Yu
AU - Pablant, Novimir
N1 - Publisher Copyright:
© 2018 IOP Publishing Ltd.
PY - 2019/1
Y1 - 2019/1
N2 - Wendelstein 7-X is a highly optimized stellarator that went into operation in 2015. With a 30 cubic meter volume, a superconducting coil system operating at 2.5 T, and steady-state heating capability of eventually up to 10 MW, it was built to demonstrate the benefits of optimized stellarators at parameters approaching those of a fusion power plant. We report here on the first results with the test divertor installed, during the second operation phase, which was performed in the second half of 2017. Operation with a divertor, and the addition of several new fueling systems, allowed higher density operation in hydrogen as well as helium. The effects that higher density operation had on both divertor operation and global confinement will be described. In particular, at high densities detachment was observed, and the highest fusion triple product for a stellarator was achieved.
AB - Wendelstein 7-X is a highly optimized stellarator that went into operation in 2015. With a 30 cubic meter volume, a superconducting coil system operating at 2.5 T, and steady-state heating capability of eventually up to 10 MW, it was built to demonstrate the benefits of optimized stellarators at parameters approaching those of a fusion power plant. We report here on the first results with the test divertor installed, during the second operation phase, which was performed in the second half of 2017. Operation with a divertor, and the addition of several new fueling systems, allowed higher density operation in hydrogen as well as helium. The effects that higher density operation had on both divertor operation and global confinement will be described. In particular, at high densities detachment was observed, and the highest fusion triple product for a stellarator was achieved.
KW - Wendelstein 7-X
KW - divertor
KW - fusion
KW - optimization
KW - stellarator
UR - http://www.scopus.com/inward/record.url?scp=85057791969&partnerID=8YFLogxK
U2 - 10.1088/1361-6587/aaec25
DO - 10.1088/1361-6587/aaec25
M3 - Article
AN - SCOPUS:85057791969
SN - 0741-3335
VL - 61
JO - Plasma Physics and Controlled Fusion
JF - Plasma Physics and Controlled Fusion
IS - 1
M1 - 014035
ER -