Optimization of helicon wave off-axis current drive in CFETR tokamak

2021 ◽  
Vol 172 ◽  
pp. 112897
Author(s):  
Xinxia Li ◽  
Guozhuang Li ◽  
Hongbo Liu
Keyword(s):  
Current Drive ◽  
Helicon Wave

Helicon wave heating and current drive in toroidal plasmas

2020 ◽  
Vol 62 (9) ◽  
pp. 095013
Author(s):  
Jingchun Li ◽  
X T Ding ◽  
J Q Dong ◽  
S F Liu
Keyword(s):  
Current Drive ◽  
Toroidal Plasmas ◽  
Helicon Wave ◽  
Wave Heating

Helicon wave coupling in KSTAR plasmas for off-axis current drive in high electron pressure plasmas

2017 ◽  
Vol 57 (4) ◽  
pp. 046010 ◽  
Author(s):  
S.J. Wang ◽  
H.H. Wi ◽  
H.J. Kim ◽  
J. Kim ◽  
J.H. Jeong ◽  
...  
Keyword(s):  
Current Drive ◽  
High Electron ◽  
Wave Coupling ◽  
Electron Pressure ◽  
Helicon Wave

scholarly journals Off-Axis Current Drive with Helicon Waves for CFETR

2021 ◽  
Author(s):  
Yuqing Yang ◽  
Xinjun Zhang ◽  
Yanping Zhao ◽  
Chengming Qin
Keyword(s):  
Travelling Wave ◽  
Current Drive ◽  
Index Of Refraction ◽  
Fast Wave ◽  
Current Profile ◽  
Plasma Parameters ◽  
High Order Harmonic ◽  
Helicon Wave ◽  
Accessibility Issues ◽  
Helicon Waves

AbstractOff-axis current drive is necessary for Tokamak to maintain and regulate the current profile. Helicon wave is the high order harmonic fast wave and helicon wave current drive (HCD) is one of the key issues in the China Fusion Engineering Test Reactor (CFETR). The theory of HCD is briefly introduced and the simulation results are listed. Helicon waves can realize off-axis current drive under CFETR plasma parameters when the frequency is greater than 1 GHz and drive current is insensitive to the launched value of the parallel index of refraction n||, so wave accessibility issues can be reduced. Travelling Wave Antenna was analyzed by the commercial software package-CST. Near the resonant frequency of the antenna, the Voltage Standing Wave Ratio < 1.2 is obtained for the antenna in the bandwidth of 50 MHz, which means that the antenna does not require a matching system.

Helicon waves in a cylindrical plasma column

1994 ◽  
Vol 52 (3) ◽  
pp. 465-470 ◽  
Author(s):  
M. Shoucri
Keyword(s):  
Plasma Column ◽  
Body Wave ◽  
Low Frequency ◽  
Transverse Magnetic ◽  
Current Drive ◽  
Cylindrical Plasma ◽  
Helicon Wave ◽  
Collisional Damping ◽  
Helicon Waves ◽  
Cylindrical Plasma Column

Helicon waves have been used for efficiently coupling radio-frequency power to plasmas, and are studied for their potential application for low-frequency current drive in tokamks. In this paper the electromagnetic field components and the dispersion relation for azimuthally independent helicon-wave oscillations in a cylindrical plasma column are derived. The coupling of transverse electric TE and transverse magnetic TM modes associated with these oscillations is discussed. The effect of the collisional damping on determining the nature of the TM mode (either surface wave or body wave) is analysed.

Theoretical analysis of helicon wave current drive in EAST with high β operation

2020 ◽  
Vol 384 (30) ◽  
pp. 126779 ◽  
Author(s):  
Xinxia Li ◽  
Hongbo Liu ◽  
Nong Xiang ◽  
Miaohui Li
Keyword(s):  
Theoretical Analysis ◽  
Current Drive ◽  
Helicon Wave

Effects of Helicon Wave Propagation Based on a Conical Antenna Design: Part I (Preprint)

2007 ◽  
Author(s):  
Michael P. Reilly ◽  
George H. Miley ◽  
David E. Kirtley ◽  
Justin Koo ◽  
Jr. Hargus ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Antenna Design ◽  
Helicon Wave

An Idea That Has Come of Age—Organized Innovation: a Blueprint for Renewing America's Prosperity

2020 ◽  
Vol 21 (3) ◽  
pp. 243-246
Author(s):  
Paul R. Sanberg ◽  
Karen J.L. Burg
Keyword(s):  
Economic Development ◽  
Research Team ◽  
New Technologies ◽  
Current Drive ◽  
Corporate Partnerships ◽  
New Framework

Universities have long recognized the need to create pathways for ideas and new technologies to advance from academic labs to market; however, the decentralized and haphazard nature of American innovation means that some discoveries may be neglected. In order to more effectively address the issues with innovation, a research team led by Steven Currall produced a new framework in the book Organized Innovation: A Blueprint for Renewing America's Prosperity. Because of the current drive of universities to increase innovation, economic development, and corporate partnerships, we thought it was timely to revisit this book and offer commentary on its lessons for navigating these demands.

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