5 papers
Understanding Carbon Sourcing and Transport Originating from the Helicon Antenna Surfaces During High-Power Helicon Discharge in DIII-D Tokamak
A. Kumar, D. Nath, W. Tierens +11
The high-power helicon wave system in the DIII-D tokamak introduces new plasma--material interaction (PMI) challenges due to rectified RF sheath potentials forming near antenna str…
Density and Particle Sourcing Optimization in a Helicon Plasma Source Prototype For Wakefield Accelerator Applications
Michael Zepp, Marcel Granetzny, Oliver Schmitz
Helicon plasmas are being considered as plasma sources for wakefield accelerators, subject to strict density requirements. We present various mechanisms to increase axial density h…
An Innovative Heterodyne Microwave Interferometer for Plasma Density Measurements on the Madison AWAKE Prototype
Marcel Granetzny, Barret Elward, Oliver Schmitz
The Madison AWAKE Prototype (MAP) is a high-power, high-density helicon plasma experiment. The project's main goal is to develop a scalable plasma source for use in a beam-driven p…
Exploration of Helicon Plasmas for Wakefield Accelerators at the Madison AWAKE Prototype
Marcel Granetzny, Barret Elward, Michael Zepp +2
Plasma wakefield accelerators have the potential to revolutionize particle physics by providing lepton collision energies orders of magnitude beyond current technology. Crucially,…
Computational and Analytical Optimization of Helicon Antennas with a Fast Full Wave Solver Exploiting Azimuthal Fourier Decomposition
Marcel Granetzny, Oliver Schmitz
Plasma wakefield accelerators (PWA), such as AWAKE, require homogenous high-density plasmas. The Madison AWAKE Prototype (MAP) has been built to create a uniform argon plasma in th…