Neutron activation for ITER

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1147657· OSTI ID:451807

Barnes, C W ^[1]; Loughlin, M J ^[2]; Nishitani, T ^[3]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. JET Joint Undertaking, Abingdon (United Kingdom)
3. JAERI Naka Fusion Research Establishment, Naka, Ibaraki 311-01 (Japan)

There are three primary goals for the Neutron Activation system for ITER: to maintain a robust relative measure of fusion power with stability and wide dynamic range (seven orders of magnitude), allow an absolute calibration of fusion power production, and provide a flexible and reliable system for materials testing. The nature of the activation technique is such that stability and wide dynamic range can be intrinsic properties of the system. It has also been the technique that demonstrated (on JET and TFTR) the most accurate neutron measurements in DT operation. Since the detectors for assaying the radioactivity are not located on the tokamak and are therefore amenable to accurate characterization, and if the activation samples are placed very close to the ITER plasma with minimal scattering or attenuation, high overall accuracy in the fusion energy production (7{percent}{endash}10{percent}) should be achievable on ITER. In the paper, a conceptual design is presented. A system is shown to be capable of meeting these three goals, and unresolved design issues are identified. {copyright} {ital 1997 American Institute of Physics.}

• Research Organization: Los Alamos National Laboratory
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 451807
• Report Number(s): CONF-960543--
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 1 Vol. 68; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CALIBRATION
ITER TOKAMAK
MATERIALS TESTING
MEASURING METHODS
NEUTRON ACTIVATION ANALYSIS
NEUTRON DETECTION
NEUTRON SPECTROMETERS
PLASMA DIAGNOSTICS
POWER GENERATION
RADIOACTIVATION
TOKAMAK DEVICES
fusion reactor ignition
fusion reactor instrumentation
plasma toroidal confinement