Sep 20 – 24, 2021
America/Vancouver timezone

Redefining Plasma Chambers for ECR Ion Sources: the IRIS Structure

Sep 23, 2021, 9:50 AM
20m
Parallel Session (Contributed Oral) talk Production of highly charged ion beams

Speaker

Giuseppe Torrisi (INFN - National Institute for Nuclear Physics)

Description

One possible way to optimize microwave coupling and plasma confinement in ECR Ion Sources is a revolutionary design strategy of plasma chambers, breaking the cylindrical symmetry. This contribution reports about the design and numerical validation of an innovative resonant cavity playing as plasma chamber of ECR ​​ion sources. The new chamber, named IRIS (Innovative Resonators for Ion Sources), was argued starting from the 3D structure of the plasma and, therefore, fashioned to the twisting magnetic structure. The microwave launching scheme was radically changed as well, consisting of side-coupled slotted-waveguides with diffractive apertures smoothly matching the overall structure of the camera. This approach also enables a profound optimization of cooling systems and overall spaces in general (for gas feedings, oven systems, sputtering, etc.). Here we report on the conceptual study, electromagnetic design and PIC simulations of the electron heating in the novel resonant cavity, comparing results with those for standard (cylindrical) chamber, and also considering the impact of microwave feeding led by single aperture rectangular waveguides vs. waveguide-slotted antennas. Manufacture strategy, based on additive manufacturing techniques, will also be discussed.

E-mail for contact person peppetorrisi@lns.infn.it

Primary authors

Alessio Galatà (INFN - National Institute for Nuclear Physics) Giorgio Sebastiano Mauro (INFN - National Institute for Nuclear Physics) Angelo Pidatella (INFN - National Institute for Nuclear Physics) Mr Carmelo Sebastiano Gallo (INFN - National Institute for Nuclear Physics) David Mascali (Istituto Nazionale di Fisica Nucleare) Dr Eugenia Naselli (INFN - National Institute for Nuclear Physics) Mr Filippo Russo (INFN - National Institute for Nuclear Physics) Prof. Gino Sorbello (Università degli Studi di Catania) Giuseppe Torrisi (INFN - National Institute for Nuclear Physics) Ornella Leonardi (INFN - National Institute for Nuclear Physics)

Presentation materials