Title
Overview on R&D and design activities for the ITER core charge exchange spectroscopy diagnostic system
Author
Biel, W.
Baross, T.
Bourauel, P.
Dunai, D.
Durkut, M.
Erdei, G.
Hawkes, N.
von Hellermann, M.
Hogenbirk, A.
Jaspers, R.
Kiss, G.
Klinkhamer, J.F.F.
Koning, J.F.
Kotov, V.
Krasikov, Y.
Krimmer, A.
Lischtschenko, O.
Litnovsky, A.
Marchuk, O.
Neubauer, O.
Offermanns, G.
Panin, A.
Patel, K.
Pokol, G.
Schrader, M.
Snijders, B.
Szabo, V.
van der Valk, N.J.C.
Voinchet, R.
Wolters, J.
Zoletnik, S.
Publication year
2011
Abstract
The ITER core charge exchange recombination spectroscopy (core CXRS) diagnostic system is designed to provide experimental access to various measurement quantities in the ITER core plasma such as ion densities, temperatures and velocities. The implementation of the approved CXRS diagnostic principle on ITER faces significant challenges: First, a comparatively low CXRS signal intensity is expected, together with a high noise level due to bremsstrahlung, while the requested measurement accuracy and stability for the core CXRS system go far beyond the level commonly achieved in present-day fusion experiments. Second, the lifetime of the first mirror surface is limited due to either erosion by fast particle bombardment or deposition of impurities. Finally, the hostile technical environment on ITER imposes challenging boundary conditions for the diagnostic integration and operation, including high neutron loads, electro-magnetic loads, seismic events and a limited access for maintenance. A brief overview on the R&D and design activities for the core CXRS system is presented here, while the details are described in parallel papers. © 2011 Elsevier B.V. All Rights Reserved.
Subject
Physics & Electronics
OPT - Optics
TS - Technical Sciences
Physics
Active spectroscopy
Diagnostic
ITER
Mechanical engineering
Optical design
Upper port plug
Active spectroscopy
Core charge
Core plasma
CXRS diagnostics
Design activity
Diagnostic
Diagnostic systems
Fast particle
First mirror
Fusion experiments
High noise levels
Ion density
ITER
Measurement accuracy
Seismic event
Signal intensities
Technical environments
Upper port plug
Optical design
Charge transfer
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http://resolver.tudelft.nl/uuid:41672461-5f0f-414e-a2b2-3cf52c43380e
TNO identifier
443014
ISSN
0920-3796
Source
Fusion Engineering and Design, 86 (6-8), 548-551
Document type
article