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Title: Particle transport and heat loads in NIO1

NIO1 is a compact radio frequency ion source designed to generate a 60 kV-135 mA hydrogen negative ion beam and it aims at continuous operation, which implies a detailed thermo-mechanical analysis of the beam-facing components, in particular, the accelerator grids. A 3D analysis of the entire NIO1 beam has been performed for the first time with a fully 3D version of EAMCC, a relativistic particle tracking code for the calculation of the grid power deposition induced by particle impacts. According to the results presented in this paper, secondary and co-extracted electrons cause a non-negligible heat load on the grids, where different high-power density regions, within reasonable sustainable standard limits, are calculated.
Authors:
; ;  [1] ;  [2]
  1. Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete) Corso Stati Uniti 4, 35127 Padova (Italy)
  2. INFN-LNL, viale dell’Università 2, 35020 Legnaro (Italy)
Publication Date:
OSTI Identifier:
22483012
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 87; Journal Issue: 2; Other Information: (c) 2015 EURATOM; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ACCELERATORS; ANIONS; DESIGN; GRIDS; HEATING LOAD; HYDROGEN; ION BEAMS; ION SOURCES; POWER DENSITY; RADIOWAVE RADIATION; RELATIVISTIC RANGE