skip to main content

SciTech ConnectSciTech Connect

Title: Electron cyclotron resonance ion source plasma characterization by X-ray spectroscopy and X-ray imaging

An experimental campaign aiming to investigate electron cyclotron resonance (ECR) plasma X-ray emission has been recently carried out at the ECRISs—Electron Cyclotron Resonance Ion Sources laboratory of Atomki based on a collaboration between the Debrecen and Catania ECR teams. In a first series, the X-ray spectroscopy was performed through silicon drift detectors and high purity germanium detectors, characterizing the volumetric plasma emission. The on-purpose developed collimation system was suitable for direct plasma density evaluation, performed “on-line” during beam extraction and charge state distribution characterization. A campaign for correlating the plasma density and temperature with the output charge states and the beam intensity for different pumping wave frequencies, different magnetic field profiles, and single-gas/gas-mixing configurations was carried out. The results reveal a surprisingly very good agreement between warm-electron density fluctuations, output beam currents, and the calculated electromagnetic modal density of the plasma chamber. A charge-coupled device camera coupled to a small pin-hole allowing X-ray imaging was installed and numerous X-ray photos were taken in order to study the peculiarities of the ECRIS plasma structure.
Authors:
; ; ; ;  [1] ; ; ;  [2] ;  [1] ;  [3] ;  [1] ;  [3] ;  [1] ;  [3]
  1. INFN–Laboratori Nazionali del Sud, Via S. Sofia 62, 95125 Catania (Italy)
  2. Institute for Nuclear Research (Atomki), Hungarian Academy of Sciences, Bem tér 18/c, H-4026 Debrecen (Hungary)
  3. (Italy)
Publication Date:
OSTI Identifier:
22482862
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 87; Journal Issue: 2; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BEAM CURRENTS; BEAM EXTRACTION; CHARGE STATES; CHARGE-COUPLED DEVICES; ECR ION SOURCES; ELECTRON CYCLOTRON-RESONANCE; ELECTRON DENSITY; GE SEMICONDUCTOR DETECTORS; PLASMA DENSITY; X RADIATION; X-RAY SPECTROSCOPY