ECRIS2018 - List of Authors (Gallo, C.S.)

Paper	Title	Page
TUB3	A Possible Optimization of Electron Cyclotron Resonance Ion Sources Plasma Chambers	67
	C.S. Gallo, A. Galatà INFN/LNL, Legnaro (PD), Italy D. Mascali, G. Torrisi INFN/LNS, Catania, Italy
	In the resonant cylindrical cavities of Electron Cyclotron Resonance Ion Sources (ECRIS), microwave fields are used to generate and sustain the plasma. Normally, resonant modes of a higher order than the fundamental one are excited, due to the high frequency used compared to the dimensions of the plasma chambers: this can lead to small electric fields on the resonant surface, translating in low electrons energy and poor source performances. In this paper, we propose a possible modification of the conventional plasma chambers, resulting from an electromagnetic study carried out on a Caprice-type full permanent magnet ECRIS. Such modification implies the excitation of a "length-independent" resonant mode, having an intense and homogeneous electric field on the plasma chamber axis. This characteristic makes the modification suitable to be applied to numerous ECR sources. The positive effect on the plasma electrons density distribution will be also shown.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-TUB3
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUP27	Numerical Simulations of Magnetically Confined Plasmas	152
	A. Galatà, C.S. Gallo INFN/LNL, Legnaro (PD), Italy D. Mascali, G. Torrisi INFN/LNS, Catania, Italy
	Since 2012, the INFN ion source group has been undertaking an intense activity on numerical modelling of magnetically confined plasmas, presently carried out in the framework of the PANDORA project. The aim is the development of a predictive tool for the design of Electron Cyclotron Resonance (ECR) Ion Sources or Traps and ECR-based Charge Breeders, able to determine spatial density and energy distributions for both electrons and ions. The work mainly concerns the study of two aspects: on one hand, the interaction of an ion beam with a magnetized plasma; on the other hand, the microwave-to-plasma coupling, including the 3D plasma electrons dynamics in the confinement magnetic field and intra-particles collisions. This contribution describes the state-of-the-art of the work on both the fronts: an overview of the beam-plasma interaction, showing the latest results about the ECR-plasma density fine structure, as well as electron spatial temperature distribution will be shown.
	Poster TUP27 [1.254 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-TUP27
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

A Possible Optimization of Electron Cyclotron Resonance Ion Sources Plasma Chambers

67

C.S. Gallo, A. Galatà
INFN/LNL, Legnaro (PD), Italy
D. Mascali, G. Torrisi
INFN/LNS, Catania, Italy

In the resonant cylindrical cavities of Electron Cyclotron Resonance Ion Sources (ECRIS), microwave fields are used to generate and sustain the plasma. Normally, resonant modes of a higher order than the fundamental one are excited, due to the high frequency used compared to the dimensions of the plasma chambers: this can lead to small electric fields on the resonant surface, translating in low electrons energy and poor source performances. In this paper, we propose a possible modification of the conventional plasma chambers, resulting from an electromagnetic study carried out on a Caprice-type full permanent magnet ECRIS. Such modification implies the excitation of a "length-independent" resonant mode, having an intense and homogeneous electric field on the plasma chamber axis. This characteristic makes the modification suitable to be applied to numerous ECR sources. The positive effect on the plasma electrons density distribution will be also shown.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-TUB3

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUP27

Numerical Simulations of Magnetically Confined Plasmas

152

A. Galatà, C.S. Gallo
INFN/LNL, Legnaro (PD), Italy
D. Mascali, G. Torrisi
INFN/LNS, Catania, Italy

Since 2012, the INFN ion source group has been undertaking an intense activity on numerical modelling of magnetically confined plasmas, presently carried out in the framework of the PANDORA project. The aim is the development of a predictive tool for the design of Electron Cyclotron Resonance (ECR) Ion Sources or Traps and ECR-based Charge Breeders, able to determine spatial density and energy distributions for both electrons and ions. The work mainly concerns the study of two aspects: on one hand, the interaction of an ion beam with a magnetized plasma; on the other hand, the microwave-to-plasma coupling, including the 3D plasma electrons dynamics in the confinement magnetic field and intra-particles collisions. This contribution describes the state-of-the-art of the work on both the fronts: an overview of the beam-plasma interaction, showing the latest results about the ECR-plasma density fine structure, as well as electron spatial temperature distribution will be shown.

Poster TUP27 [1.254 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-TUP27

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)