Conference Papers

Showing 1 - 2 of 2 Conference Paper Results
2020
UKAEA-CCFE-CP(20)71
"FAST-ION CONFINEMENT DURING OFF-AXIS NBI IN LOW COLLISIONALITY DISCHARGES AT ASDEX UPGRADE AND TCV"
27th IAEA Fusion Energy Conference, Ahmedabad, India, 22-27 October 2018

B. Geiger A. N. Karpushov S. Sharapov R. Akers A. Bock M. Dunne B. Duval M. Fontana L. Giannone J. Hobirk C. Hopf A.S. Jacobsen D. Keeling P. Lauber C. Marini P. ZS. Poloskei M. Salewski O. Sauter P. A. Schneider D. Testa A.J. Van Vuuren M. Willensdorfer the TCV ASDEX Upgrade EUROfusion MST15 Teams

The fast-ion transport has been investigated in low-collisionality discharges at ASDEX Upgrade and TCV using offaxis neutral beams. In both devices Alfv´en eigenmode activity was observed which does, however, not strongly affect the global fast-ion confinement. In contrast, charge exchange losses have been identified to have a strong effect. At TC…

Preprint
2019
UKAEA-CCFE-CP(19)28
"Scrape off layer (SOL) transport and filamentary dynamics in high density tokamak regimes"
27th IAEA Fusion Energy Conference, Ahmedabad, India, 22-27 October 2018

N. Vianello D. Carralero C. K. Tsui V. Naulin M. Agostini J. Boedo B. Labit C. Theiler D. Aguiam S. Allan M. Bernert S. Costea I. Cziegler H. De Oliveira J. Galdon-Quiroga G. Grenfell A. Hakola C. Ionita H. Isliker A. Karpushov J. Kovacic B. Lipschultz R. Mauriozio K. McClements F. Militello J. Olsen J. J. Rasmussen T. Ravensbergen H. Reimerdes B. Schneider R. Schrittwieser M. Spolaore K. Verhaegh J. Vicente N. Walkden W. Zhang E. Wolfrum the ASDEX Upgrade Team the TCV team the EUROfusion MST1 Team

A detailed cross-device investigation on the role of filamentary dynamics in high density regimes has been performed within the EUROfusion framework comparing ASDEX-Upgrade (AUG) and TCV tokamaks. Both devices have run density ramp experiments at different levels of plasma current, keeping toroidal field or q95 constant in order to disentangle the …

Preprint Published