Conveners
Steady State and Hybrid scenarios: EX/4 & PPC/1
- Jiangang Li (Institute of Plasma Physics, Chinese Academy of Sciences)
Dr
C. Craig Petty
(General Atomics)
10/19/16, 4:40 PM
EXC - Magnetic Confinement Experiments: Confinement
Oral
A new regime with beta, collisionality and plasma shape relevant to the ITER steady-state mission has been attained in DIII-D using the fully noninductive hybrid scenario, including complete ELM suppression over a wide q_95 window (between 5.9 and 7.1) and with little confinement degradation using resonant magnetic perturbation (RMP) coils. Furthermore, high-beta hybrid plasmas have been...
Dr
Jinping Qian
(Institute of plasma physics, Chinese academy of sciences)
10/19/16, 5:00 PM
EXC - Magnetic Confinement Experiments: Confinement
Oral
Extension of large radius internal transport barrier (ITB), high bootstrap current fraction scenario toward low plasma rotation and q95 relevant to steady state operation at Q=5 in ITER has been successfully demonstrated in DIII-D. New DIII-D experiments have shown that the key feature of large radius ITB and excellent energy confinement when the scenario is extended inductively to higher...
Mr
A. M. Garofalo
(General Atomics)
10/19/16, 5:20 PM
EXC - Magnetic Confinement Experiments: Confinement
Oral
Experiments on EAST [1] have started to adapt the fully-noninductive high poloidal beta scenario developed on DIII-D [2,3], in order to demonstrate, in principle, steady state tokamak operation at high performance on metal walls. The electron density is systematically varied in order to vary the deposition profile of the external lower hybrid current drive (LHCD), while keeping the plasma in...
Dr
Hiromi Takahashi
(National Institute for Fusion Science)
10/19/16, 5:40 PM
PPC - Plasma Overall Performance and Control
Oral
In future reactors, the fusion reaction is expected to be sustained under the electron heating dominant condition, where both ion temperature and electron temperature are high. Thus the characterization of the thermal transport for the plasmas, of which ion temperature and electron temperature are simultaneously high, is necessary. In recent years, an integration of high ion temperature and...
Prof.
Satoru Sakakibara
(National Institute for Fusion Science)
10/19/16, 6:00 PM
EXS - Magnetic Confinement Experiments: Stability
Oral
Previous experiments in LHD show that high beta plasma with more than 5% was successfully achieved in the high collisional regime because of low magnetic field operation at 0.425 T. To investigate the collisionallity dependence of plasma confinement property, we have made high beta experiments in relatively high-field configurations at 1 T to increase the electron temperature. As a result,...
Dr
Matthias Hirsch
(Max-Planck-Institut für Plasmaphysik)
10/19/16, 6:20 PM
EXC - Magnetic Confinement Experiments: Confinement
Oral
Wendelstein 7-X (W7-X) is built to assess the concept of optimized stellarators at reactor-relevant values of both collisionality and the plasma beta.
In its first operation phase (started in the end of 2015 for 10 weeks of plasma experiments), the device is equipped with five uncooled, inboard carbon limiters. This phase of the project is dedicated to integrated operation, commissioning...
