Thomson scattering at Pilot-PSI and Magnum-PSI

TitleThomson scattering at Pilot-PSI and Magnum-PSI
Publication TypeJournal Article
Year of Publication2009
AuthorsG.J van Rooij, H.J van der Meiden, M Hoen, W.R Koppers, A.E Shumack, W.AJ Vijvers, J. Westerhout, G.M Wright, J. Rapp
JournalPlasma Physics and Controlled Fusion
Volume51
Number12
Pagination8
Date PublishedDec
Type of ArticleProceedings Paper
ISBN Number0741-3335
Accession NumberISI:000271940800048
Abstract

A robust and sensitive Thomson scattering (TS) system has been developed for the high density low temperature plasma in the linear plasma generator Pilot-PSI, which routinely and reproducibly measures electron density and temperature profiles along a detection chord of 25 mm with a spatial resolution of 0.6 mm. The capabilities of the system are illustrated in this paper by a selection of new results from the research program at Pilot-PSI. TS data are presented that demonstrate the present plasma density record in Pilot-PSI: 5 x 10(21) m(-3) at a temperature of 3 eV. TS measurements in front of the target are combined with ion saturation current data to determine plasma velocities of 4-5 km s(-1), which shows that heat convection is dominating over conduction. Single shot operation of TS is also possible, which is demonstrated by measurements revealing a rotating filamentary return current channel to the source anode. Finally, the TS system upgrade that will provide real time feedback of electron density and temperature in the larger plasma generator Magnum-PSI is discussed.

URL<Go to ISI>://000271940800048
Division

Fusion physics

PID

5942de7978a6f851a9c2985267569d1a

Alternate TitlePlasma Phys. Control. Fusion

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