Siam Physics Congress 2017

Predictive Simulations of Pellet Injection in ITER and DEMOs

24 May 2017, 17:00

15m

Ballroom 3

Oral Plasma and Ion Physics, Nuclear and Radiation Physics A4: Plasma and Nuclear Fusion

Speaker

Mr Rungsin Kongkerd (Department of Physics, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand)

Description

The impacts of pellet mass ablation and deposition that consider the effect of the

particle drift due to the gradient of magnetic field are investigated for

International Thermonuclear Experimental Reactor (ITER) and Demonstration

Nuclear Fusion Power Stations (DEMOs). In the core area, the plasma profiles are

predicted by the TASK/TR code in which the core transport models consist of a

combination of the MMM95 anomalous transport model and NCLASS neoclassical

transport. The pellet ablation in the plasma is described using neutral gas

shielding (NGS) model with inclusion of the $\nabla B$-induced $E\times B$ drift

of the ionized ablated pellet particles. These models are implemented in the HPI2

code that is coupled with the TASK/TR code. It is found that the high-field-side

(HFS) injection can deposit the pellet mass deeper than the injection from the

low-field-side (LFS) due to the advantage of the $\nabla B$-induced drift. The

optimized injection scenarios for achieving the highest fusion performance for

these reactors are also reported in this study.

Peer reviewing

Paper

Accepted on 7 Jun 2017 by Papichaya Chaisakul

Paper files:

• Response_to_Referee.pdf
• SPC2017_Draft2.pdf