Qingxi Yang
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Design and verification of superconducting magnet supports in the ITER magnet cold test bench Open
A magnet cold test bench (MCTB) is being developed to accommodate the PF1 and TF superconducting coils of the International Thermonuclear Experimental Reactor, ensuring that performance evaluations are conducted under the required vacuum a…
View article: The design and implementation of automated maintenance system for the first-wall based on dual-arm manipulator
The design and implementation of automated maintenance system for the first-wall based on dual-arm manipulator Open
This paper proposed a framework of a dual-arm-based robotic maintenance system, including visual recognition, trajectory planning, force feedback control and master–slave control. To meet the requirements of automated maintenance, we propo…
View article: Research on accurate morphology predictive control of CFETR multi-purpose overload robot
Research on accurate morphology predictive control of CFETR multi-purpose overload robot Open
The CFETR multipurpose overload robot (CMOR) is a critical component of the fusion reactor remote handling system. To accurately calculate and visualize the structural deformation and stress characteristics of the CMOR motion process, this…
Research on the efficient process-oriented structural optimization method of the large-scale vacuum cryostat for fusion reactors Open
An efficient optimization design for the large and complex components of fusion reactors is crucial to address the engineering design requirements and further promote technical standardization. Based on research status, current engineering…
View article: Pre-conceptual studies of a travelling wave array antenna for the EAST
Pre-conceptual studies of a travelling wave array antenna for the EAST Open
One of the primary problems of ion cyclotron range of frequency (ICRF) systems in magnetic confinement experiments is the coupling of a large amount of radio frequency wave power through the plasma cut-off layer within the voltage limits o…
View article: Status of the WEST travelling wave array antenna design and results from the high power mock-up
Status of the WEST travelling wave array antenna design and results from the high power mock-up Open
This paper presents the current status of the WEST TWA antenna, its mock-up and a possible extrapolation to DEMO. The updated WEST TWA design has a reduced antenna length and features feeding and mechanical support from a single vessel por…
View article: Study of the Design and Assembly of a High Harmonic Fast Wave Antenna for an LAPD
Study of the Design and Assembly of a High Harmonic Fast Wave Antenna for an LAPD Open
The simulation survey of TAE Technologies has demonstrated that high harmonic fast wave (HHFW) heating is a promising method for core electron heating of FRC plasma. This study mainly describes the HHFW antenna mechanical design and assemb…
View article: Characterizations and first plasma operation of the WEST load-resilient actively cooled ICRF launchers
Characterizations and first plasma operation of the WEST load-resilient actively cooled ICRF launchers Open
The paper discusses the characterization of the three high power steady-state and load-resilient ICRF launchers of WEST before their installation in the tokamak. These launchers have been characterized and validated in low-power experiment…
View article: Overview of TAE technologies’ HHFW project on LAPD
Overview of TAE technologies’ HHFW project on LAPD Open
Simulation survey performed at TAE Technologies, has demonstrated that high harmonic fast wave (HHFW) heating is a promising scenario to heat core electrons of FRC plasma. To prepare the proposed experimental study of HHFW antenna-plasma c…
View article: Test method of pulse response characteristics for conductive switching materials induced by electromagnetic pulse field
Test method of pulse response characteristics for conductive switching materials induced by electromagnetic pulse field Open
Electrical field induced conductive switching materials are novel nonlinear materials. They can show an abrupt reduction of resistivity when the external electrical field strength exceeds a predefined threshold, and the materials will swit…
Equivalent circuits of transmission lines sag above lossy ground excited by external electromagnetic fields Open
To obtain actual responses of nonlinear terminations for the transmission lines sag above lossy ground, it imperatively need to build the equivalent circuits of transmission lines sag. In this paper, the multi-conductor transmission lines …
View article: Ion Cyclotron Range of Frequency Power Challenges and Solutions
Ion Cyclotron Range of Frequency Power Challenges and Solutions Open
The use of power in the Ion Cyclotron Range of Frequency (ICRF) to heat the plasma has encountered challenges: the sensitivity to the plasma edge density profile, with the difficulty to couple power to the plasma and the enhanced plasma-an…
Equivalent circuits of multi-conductor transmission lines above lossy ground excited by external electromagnetic fields Open
The equivalent circuit of multi-conductor transmission lines above lossy ground will be more complex compared with one single transmission line above lossy ground, and many problems of matrices need to be solved. In this paper, for multi-c…
Upgraded flowing liquid lithium limiter for improving Li coverage uniformity and erosion resistance in EAST device Open
We report on design and technology improvements for a flowing liquid lithium (FLiLi) limiter inserted into auxiliary heated discharges in the experimental advanced superconducting tokamak device. In order to enhance Li coverage uniformity …
View article: Present Status of the SC202 Superconducting Cyclotron Project
Present Status of the SC202 Superconducting Cyclotron Project Open
In 2015 the joint project with ASIPP (Hefei, China) on design and construction of superconducting proton cyclotron SC202 was started. Two copies of SC202 shall be produced, according to the Collaboration Agreement between JINR and ASIPP. O…
View article: Preliminary Design of RF System for SC200 Superconducting Cyclotron
Preliminary Design of RF System for SC200 Superconducting Cyclotron Open
The SC200 is a compact superconducting cyclotron, which is designed under the collaboration of ASIPP (Hefei, China)-JINR (Dubna, Russia), for proton therapy. The protons are accelerated to 200 Mev with maximum beam current of 500 nA. The v…
View article: Compact Superconducting Cyclotron SC200 for Proton Therapy
Compact Superconducting Cyclotron SC200 for Proton Therapy Open
Superconducting cyclotron SC200 will provide acceleration of protons up to 200 MeV with maximum beam current of 1 µA. We plan to manufacture in China two cyclotrons: one will operate in Hefei cyclotron medical center the other will replace…
Recent progress on improving ICRF coupling and reducing RF-specific impurities in ASDEX Upgrade Open
The recent scientific research on ASDEX Upgrade (AUG) has greatly advanced solutions to two issues of Radio Frequency (RF) heating in the Ion Cyclotron Range of Frequencies (ICRF): (a) the coupling of ICRF power to the plasma is significan…
RF, Disruption, and Thermal Stress Analyses of EAST I and B Port Antennas Open
Chinese Academy of Sciences Institute of Plasma Physics and Massachusetts Institute of Technology Plasma Science and Fusion Center have been collaborating on experimental advanced superconducting tokamak (EAST). Presented in this paper are…