Conveners
RF & SOL Physics: EX/7 & TH/5
- Yong Liu (SWIP)
Dr
Paul Bonoli
(Plasma Science and Fusion Center - MIT)
21/10/2016, 08:30
THD - Magnetic Confinement Theory and Modelling: Plasma–material interactions; divertors, limiters, SOL
Oral
High field side (HFS) launch of RF power in the ion cyclotron range of frequencies (ICRF) and the lower hybrid range of frequencies (LHRF) in double null configurations in reactor grade plasmas is studied and found to represent an integrated solution that both mitigates PMI / coupling problems and at the same time opens up the possibilities of greatly improved core wave physics
Power...
Dr
Gregory Wallace
(MIT Plasma Science and Fusion Center)
21/10/2016, 08:50
EXD - Magnetic Confinement Experiments: Plasma–material interactions; divertors; limiters; scrape-off layer (SOL)
Oral
Experimental and modeling results from Alcator C-Mod and NSTX show that details of the scrape off layer (SOL) can significantly impact the effectiveness of radio frequency (RF) heating and current drive actuators. C-Mod experiments show that cold, dense conditions in the SOL lead to significant collisional absorption of lower hybrid (LH) waves outside the last closed flux surface (LCFS),...
Dr
Tetsutarou Oishi
(National Institute for Fusion Science)
21/10/2016, 09:10
EXD - Magnetic Confinement Experiments: Plasma–material interactions; divertors; limiters; scrape-off layer (SOL)
Oral
Stochastization of edge magnetic fields has been extensively studied not only for the ELM mitigation but also for the plasma detachment and the impurity transport. Large Helical Device (LHD) has a thick stochastic magnetic field layer called “ergodic layer” located at the edge plasma with three-dimensional structure intrinsically formed by helical coils. Recently, reduction of the parallel...
Dr
Bernhard Sieglin
(Max-Planck-Institut for Plasma Physics)
21/10/2016, 09:30
EXD - Magnetic Confinement Experiments: Plasma–material interactions; divertors; limiters; scrape-off layer (SOL)
Oral
A. Studies of the steady state scrape-off layer heat transport with and without external magnetic perturbation in ASDEX Upgrade L-Mode are shown. It is found that the heat transport perpendicular to the magnetic field is within the uncertainty unaffected by external magnetic perturbation. The observed heat flux pattern is explained by heat flux calculations using the vacuum field of the...
Dr
Nirmal Kumar Bisai
(Institute for Plasma Research, Bhat, Gandhinagar-382428, India)
21/10/2016, 09:50
THD - Magnetic Confinement Theory and Modelling: Plasma–material interactions; divertors, limiters, SOL
Oral
Role of neutral gas in Scrape-off Layer (SOL) of tokamak plasma is important as it modifies the
plasma turbulence. This has been investigated using a simple two-dimensional (2D) model that
consists of electron continuity, quasi-neutrality, electron energy and neutral gas continuity
equations. Earlier the role of the neutral gas has been studied using uniform electron
temperature [1]....
