全部文献期刊会议图书|学者科研项目
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作者:R. Burhenn , S. Fiedler ...
来源:[J].Journal of Nuclear Materials(IF 1.211), 1997, Vol.241, pp.950-955
摘要:Abstract(#br)In order to study impurity transport and radiation behavior nitrogen has been injected into the scrape-off plasma of limiter-dominated discharges by gas puffing or into natural magnetic islands at the plasma edge of separatrix-dominated discharges by a reciprocating ...
作者:R. Burhenn , P. Grigull ...
来源:[J].Journal of Nuclear Materials(IF 1.211), 1999, Vol.266, pp.507-512
摘要:Abstract(#br)Density limit discharges in the W7-AS stellarator with a strong density ramp were compared to a series of discharges with constant line integrated density approaching the maximum value achieved in the density ramp. The physics of the density limit in stellarators was...
作者:R. Burhenn , H. Ehmler ...
来源:[J].Journal of Nuclear Materials(IF 1.211), 2001, Vol.290, pp.920-924
摘要:Abstract(#br)3D modeling on W7-AS suggests that to obtain divertor plasma detachment, upstream separatrix densities n es in the range of 10 20 m −3 will be necessary. This paper investigates the ratio of n es to the line-averaged density n ̄ e under a variety of conditions...
作者:R. Burhenn , R. Brakel ...
来源:[J].Journal of Nuclear Materials(IF 1.211), 2003, Vol.313, pp.1131-1140
摘要:Abstract(#br)A promising new operational regime on the Wendelstein stellarator W7-AS has been discovered, fulfilling the conditions of optimal core behavior in combination with edge parameters suitable for successful divertor scenarios. This regime, the high density H-mode (...
作者:R. Burhenn , H. Ehmler ...
来源:[J].Journal of Nuclear Materials(IF 1.211), 2005, Vol.337-339, pp.520-524
摘要:Abstract(#br)On the W7-AS stellarator, the subdivertor neutral pressure in an up–down divertor pair as well as at two points in the vicinity of a lower divertor module in the main chamber are measured. Results are presented for ι ̵ a = 5 / 9 island divertor discharges under ...
作者:R. Burhenn , R. Brakel ...
来源:[J].Fusion Engineering and Design(IF 0.842), 2003, Vol.66, pp.49-58
摘要:Abstract(#br)The research on divertors for stellarators is at the beginning. Extensive studies are being prepared on large helical device (LHD) and W7-X. W7-AS is now being operated with an open island divertor (ID) which serves as a test bed for the W7-X divertor. The diver...
作者:R. Burhenn , B. Buttenschön ...
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (4)
摘要:The transport of heavy impurities has been investigated at the Wendelstein 7-X stellarator during core electron root confinement (CERC) experiments. Iron atoms were injected via the laser blow-off technique and analyzed by VUV and x-ray spectrometers. The injected amount of iron ...
作者:R. Burhenn , B. Buttenschön ...
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (11)
摘要:The optimized superconducting stellarator device Wendelstein 7-X (with major radius , minor radius , and plasma volume) restarted operation after the assembly of a graphite heat shield and 10 inertially cooled island divertor modules. This paper reports on the results from the f...
作者:R. Burhenn , M. Hirsch ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (11)
摘要:The main objective of the Wendelstein 7-X (W7-X) stellarator is to demonstrate the integrated reactor potential of the optimized stellarator line. An important element of this mission is the achievement of high heating-power and high confinement in steady-state operation. Such an...
作者:R. Burhenn , J. Svensson ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (8)
摘要:In the first operational phase of the stellarator Wendelstein 7-X (W7-X), the x-ray imaging crystal spectrometer (XICS) system has been commissioned for measuring radial profiles of ion and electron temperature, T i and T e, plasma rotation velocities, ...

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