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Title: Preliminary design of electrostatic sensors for MITICA beam line components

Megavolt ITER Injector and Concept Advancement, the full-scale prototype of ITER neutral beam injector, is under construction in Italy. The device will generate deuterium negative ions, then accelerated and neutralized. The emerging beam, after removal of residual ions, will be dumped onto a calorimeter. The presence of plasma and its parameters will be monitored in the components of the beam-line, by means of specific electrostatic probes. Double probes, with the possibility to be configured as Langmuir probes and provide local ion density and electron temperature measurements, will be employed in the neutralizer and in the residual ion dump. Biased electrodes collecting secondary emission electrons will be installed in the calorimeter with the aim to provide a horizontal profile of the beam.
Authors:
; ; ; ; ; ;  [1]
  1. Consorzio RFX, Associazione EURATOM-ENEA sulla Fusione, 35127 Padova (Italy)
Publication Date:
OSTI Identifier:
22483037
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; ANIONS; BEAMS; CALORIMETERS; DESIGN; DEUTERIUM; ELECTRON TEMPERATURE; ELECTROSTATIC PROBES; EQUIPMENT; ION DENSITY; ITER TOKAMAK; LANGMUIR PROBE; MONITORS; PLASMA; SECONDARY EMISSION; SENSORS