skip to main content

Title: Overview of ion source characterization diagnostics in INTF

INdian Test Facility (INTF) is envisaged to characterize ITER diagnostic neutral beam system and to establish the functionality of its eight inductively coupled RF plasma driver based negative hydrogen ion source and its beamline components. The beam quality mainly depends on the ion source performance and therefore, its diagnostics plays an important role for its safe and optimized operation. A number of diagnostics are planned in INTF to characterize the ion source performance. Negative ions and its cesium contents in the source will be monitored by optical emission spectroscopy (OES) and cavity ring down spectroscopy. Plasma near the extraction region will be studied using standard electrostatic probes. The beam divergence and negative ion stripping losses are planned to be measured using Doppler shift spectroscopy. During initial phase of ion beam characterization, carbon fiber composite based infrared imaging diagnostics will be used. Safe operation of the beam will be ensured by using standard thermocouples and electrical voltage-current measurement sensors. A novel concept, based on plasma density dependent plasma impedance measurement using RF electrical impedance matching parameters to characterize the RF driver plasma, will be tested in INTF and will be validated with OES data. The paper will discuss about the overviewmore » of the complete INTF diagnostics including its present status of procurement, experimentation, interface with mechanical systems in INTF, and integration with INTF data acquisition and control systems.« less
Authors:
; ; ; ; ; ; ; ; ; ;  [1] ;  [2]
  1. ITER-India, Institute for Plasma Research, A-29 GIDC, Sector-25, Gandhinagar, Gujarat 382016 (India)
  2. Institute for Plasma Research, Bhat, Gandhinagar, Gujarat 382 428 (India)
Publication Date:
OSTI Identifier:
22483013
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 87; Journal Issue: 2; Other Information: (c) 2015 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; ANIONS; CARBON FIBERS; CESIUM; CONTROL SYSTEMS; DATA ACQUISITION; DOPPLER EFFECT; ELECTRIC POTENTIAL; ELECTROSTATIC PROBES; EMISSION SPECTROSCOPY; HYDROGEN IONS; ION BEAMS; ITER TOKAMAK; PERFORMANCE; PLASMA DENSITY; SENSORS; STRIPPING; TEST FACILITIES