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Title: Electrostatic sensors for SPIDER experiment: Design, manufacture of prototypes, and first tests

A system of electrostatic sensors has been designed for the SPIDER (Source for the production of Ions of Deuterium Extracted from RF plasma) experiment, prototype RF source of the ITER NBI (neutral beam injection). A prototype of the sensor system was manufactured and tested at the BATMAN (BAvarian Test MAchine for Negative ions) facility, where the plasma environment is similar to that of SPIDER. Different aspects concerning the mechanical manufacturing and the signal conditioning are presented, among them the RF compensation adopted to reduce the RF effects which could lead to overestimated values of the electron temperature. The first commissioning tests provided ion saturation current values in the range assumed for the design, so the deduced plasma density estimate is consistent with the expected values.
Authors:
; ; ; ; ; ; ; ;  [1] ;  [2]
  1. Consorzio RFX, Associazione Euratom-Enea sulla Fusione, Corso Stati Uniti 4, I-35127 Padova (Italy)
  2. Max-Planck-Institut für Plasmaphysik, EURATOM Association, 1533, D-85740 Garching (Germany)
Publication Date:
OSTI Identifier:
22254009
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 2; Conference: ICIS 2011: 14. international conference on ion sources, Giardini-Naxos, Sicily (Italy), 12-16 Sep 2011; Other Information: (c) 2013 Euratom; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ANIONS; BEAM INJECTION; COMMISSIONING; DESIGN; DEUTERIUM; ELECTRON TEMPERATURE; ITER TOKAMAK; MANUFACTURING; PLASMA DENSITY; SIGNAL CONDITIONING