X-ray crystal spectrometer upgrade for ITER-like wall experiments at JET

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4891182· OSTI ID:22308953

Rzadkiewicz, J. ^[1]; Chernyshova, M.; Czarski, T.; Karpinski, L. ^[2]; Jakubowska, K. ^[2]; Scholz, M. ^[3]; Byszuk, A.; Cieszewski, R.; Kasprowicz, G.; Pozniak, K.; Wojenski, A.; Zabolotny, W. ^[4]; Dominik, W. ^[5]; Conway, N. J.; Dalley, S.; Tyrrell, S.; Zastrow, K. -D. ^[6]; Figueiredo, J. ^[7]; others, and

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1. National Centre for Nuclear Research, Andrzeja Sołtana 7, 05-400 Otwock (Poland)
2. Institute of Plasma Physics and Laser Microfusion, Hery 23, 01-497 Warsaw (Poland)
3. Institute of Nuclear Physics PAN, ul. Radzikowskiego 152, 31-342 Kraków (Poland)
4. Institute of Electronic Systems, Warsaw University of Technology, 00-665 Warsaw (Poland)
5. Faculty of Physics, Institute of Experimental Physics, Warsaw University, 00-681 Warsaw (Poland)
6. JET-EFDA, Culham Science Centre, Abingdon OX14 3DB (United Kingdom)
7. EFDA-CSU, Culham Science Centre, Abingdon OX14 3DB (United Kingdom)

The high resolution X-Ray crystal spectrometer at the JET tokamak has been upgraded with the main goal of measuring the tungsten impurity concentration. This is important for understanding impurity accumulation in the plasma after installation of the JET ITER-like wall (main chamber: Be, divertor: W). This contribution provides details of the upgraded spectrometer with a focus on the aspects important for spectral analysis and plasma parameter calculation. In particular, we describe the determination of the spectrometer sensitivity: important for impurity concentration determination.

• OSTI ID: 22308953
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 11; Other Information: (c) 2014 Euratom; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CONCENTRATION RATIO
DIVERTORS
FIRST WALL
ITER TOKAMAK
JET TOKAMAK
PLASMA
PLASMA IMPURITIES
RESOLUTION
SENSITIVITY
TUNGSTEN
X-RAY SPECTROMETERS