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REQUIREMENTS FOR ITER DIAGNOSTICS DE92 001830
Kenneth M. Young
Plasma Physics Laboratory, Princeton University
P.O. Box 451, Princeton, NJ 08543 USA
The development and design of plasma diagnostics for the International
Thermonuclear Experimental Reactor (ITER) present a formidable challenge for
experimental plasma physicists. The large plasma size, the high central density and
temperature and the very high thermal wall loadings provide new challenges for present
measurement techniques and lead to a search for new methods. But the physics and
control requirements for the long burn phase of the discharge, combined with very
limited access to the plasma, constrained by the requirement for radiation shielding of
the coils and sharing of access ports with heating and current drive power, remote
manipulation, fuelling and turn blanket modules, make for very difficult design
choices. An initial attempt at these choices has been made by an international team of
diagnostic physicists, gathering together in a series of three workshops during the
ITER Conceptual Design Activity. The result of these deliberations has been published
in Reference 1. This paper is based on that report and provides a summary of its most
To provide a background against which to place the diagnostic requirements and
design concepts, the ITER device, its most important plasma properties and the
proposed experimental program will be described. The specifications for the
measurement of the plasma parameters and the proposed diagnostics for these
measurements will then be addressed, followed by some examples of the design
concepts that have been proposed. As a result of these design studies, it was clear that
there were many uncertainties associated with these concepts, particularly because of
the nuclear radiation environment, so that a Research and Development Program for
diagnostic hardware was established. It will also be briefly summarized.
This report was prepared as an account of work sponsored by an agency of the United States
Government. Neither the United States Government nor any agency thereof, nor any of their
employees, makes any warranty, express or implied, or assumes any legal liability or responsi-
bility for the accuracy, completeness, or usefulness of any information, apparatus, product, or b TER
process disclosed, or represents that its use would not infringe privately owned rights. Refer-
ence herein to any specific commercial product, process, or service by trade name, trademark,
manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recom-
mendation, or favoring by the United States Government or any agency thereof. The views
and opinions of authors expressed herein do not necessarily state or reflect those of the
United States Government or any agency thereof.
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Young, K.M. Requirements for ITER diagnostics, article, January 1, 1991; New Jersey. (https://digital.library.unt.edu/ark:/67531/metadc1054270/m1/1/: accessed April 20, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.