Quiescent regions below the X-point in ASDEX upgrade

R. D. Nem*, P. Manz, J. Juul Rasmussen, N. Vianello, N. Walkden, V. Naulin, B. Sieglin, A. Herrmann, D. Brida, the ASDEX Upgrade Team

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review


Probe measurements of plasma fluctuations in the divertor region of ASDEX Upgrade reveal the existence of two quiescent regions close to the separatrix: one on the low field side scrape-off layer and one on the high field side of the private flux region. The X-point manipulator at ASDEX Upgrade provides the unique possibility of obtaining continuous measurements of the ion-saturation current from the low field side scrape-off layer through the private flux region and into the high field side scrape-off layer.

Original languageEnglish
Article number065005
JournalPlasma Physics and Controlled Fusion
Issue number6
Number of pages10
Publication statusPublished - 2021


  • ASDEX upgrade tokamak
  • Divertor region
  • Fluctuations
  • Private flux region
  • Quiescent regions
  • X-point manipulator
  • X-point region


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