NIO1 (Negative Ion Optimization 1) is a source of negative hydrogen beams, located at RFX facility in Padua. Its purpose is to analyze the optimal configurations for negative ion beam production and propagation. The propagation of ion beams in a low-density gas exploits space-charge compensation effects, that consists in the generation and confinement by the beam itself of charged particles that balance the beam charges. This thesis focuses on the characterization of the beam-generated plasma using a four-gridded probe called RFA (Retarding Field Analyzer) which provides information about compensation parameters. During this thesis work, the probe was installed and operated in NIO1. These data will be compared with those taken at NIFS, in Toki (Japan) in 2016, to study compensation plasma. These plasma parameters were then compared also with the expected ones, the probe used allowed to estimate compensation plasma parameters succesfully.

Negative ion beam plasma characterization by retarding field energy analyzer

Manaigo, Filippo
2017/2018

Abstract

NIO1 (Negative Ion Optimization 1) is a source of negative hydrogen beams, located at RFX facility in Padua. Its purpose is to analyze the optimal configurations for negative ion beam production and propagation. The propagation of ion beams in a low-density gas exploits space-charge compensation effects, that consists in the generation and confinement by the beam itself of charged particles that balance the beam charges. This thesis focuses on the characterization of the beam-generated plasma using a four-gridded probe called RFA (Retarding Field Analyzer) which provides information about compensation parameters. During this thesis work, the probe was installed and operated in NIO1. These data will be compared with those taken at NIFS, in Toki (Japan) in 2016, to study compensation plasma. These plasma parameters were then compared also with the expected ones, the probe used allowed to estimate compensation plasma parameters succesfully.
2017-09
48
Plasma physics, beam sources
File in questo prodotto:
File Dimensione Formato  
Tesi_L_Manaigo_Filippo.pdf

accesso aperto

Dimensione 7.61 MB
Formato Adobe PDF
7.61 MB Adobe PDF Visualizza/Apri

The text of this website © Università degli studi di Padova. Full Text are published under a non-exclusive license. Metadata are under a CC0 License

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12608/23820