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Fusion Science and Technology
Latest News
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
K. H. Finken, S. S. Abdullaev, M. F. M. de Bock, B. Giesen, M. von Hellermann, G. M. D. Hogeweij, M. Jakubowski, R. Jaspers, M. Kobayashi, H. R. Koslowski, M. Lehnen, G. Matsunaga, O. Neubauer, A. Pospieszczyk, U. Samm, B. Schweer, R. Wolf
Fusion Science and Technology | Volume 47 | Number 2 | February 2005 | Pages 87-96
Technical Paper | TEXTOR: A Flexible Device | doi.org/10.13182/FST05-A690
Articles are hosted by Taylor and Francis Online.
Recently, the Dynamic Ergodic Divertor (DED) with 18 helically wound coils at the high field side has been installed on TEXTOR. The DED allows static and dynamic operation up to 10 kHz. The specific features of ergodization and the open laminar zone are discussed. The dynamic feature leads to induced electrical currents and to a force transfer from the external coils to the plasma. The structures due to the DED near field are described, which result in a stripelike pattern seen both in the light of recycling particles (H, impurities) and in the heat deposition pattern. The ergodization leads either to an enhanced plasma rotation - probably due to edge electric fields - or to a reduction of the central rotation if a tearing mode is excited; the result depends on the sense of DED rotation.