Electron plasma diagnostics in ELTRAP by electron cyclotron resonance heating method
Faisal Khan, Muhammad Ikram, Mostafa Rashdan, Fahmi Elsayed, Pervaiz Ahmad, Mayeen Uddin Khandaker
TL;DR
This paper uses simulations to study electron plasma behavior in ELTRAP using electron cyclotron resonance heating with hydrogen and helium gases.
Contribution
The study introduces new insights into electron plasma diagnostics using RF drive variations and self-consistent electric field analysis in ELTRAP.
Findings
Maximum axial and radial temperatures occurred at 1.8 V and 5 GHz for both hydrogen and helium gases.
Higher excitation and ionization rates were observed radially in helium compared to hydrogen.
Self-consistent electric fields were strongest in helium at 5 GHz RF.
Abstract
Electron cyclotron resonance heating method of Particle-in-Cell code was used to analyze heating phenomena, axial kinetic energy, and self-consistent electric field of confined electron plasma in ELTRAP device by hydrogen and helium background gases. The electromagnetic simulations were performed at a constant power of 3.8 V for different RF drives (0.5 GHz– 8 GHz), as well as for 1 GHz constant frequency at these varying amplitudes (1 V—3.8 V). The impacts of axial and radial temperatures were found maximum at 1.8 V and 5 GHz as compared to other amplitudes and frequencies for both background gases. These effects are higher at varying radio frequencies due to more ionization and secondary electrons production and maximum recorded radial temperature for hydrogen background gas was 170.41 eV. The axial kinetic energy impacts were found more effective in the outer radial part (between…
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Taxonomy
TopicsPlasma Diagnostics and Applications · Particle accelerators and beam dynamics · Magnetic confinement fusion research