New 20-Channel Diagnostic for Angle-Resolved Fast Particles Measurements in LHD

Autor:	Evgeny A. VESHCHEV, Tetsuo OZAKI, Pavel R. GONCHAROV, Shigeru SUDO, null LHD Experimental Group
Rok vydání:	2007
Předmět:	Range (particle radiation) Large Helical Device Materials science Physics::Plasma Physics Noise reduction Perpendicular Particle Plasma Atomic physics Condensed Matter Physics Energy (signal processing) Computational physics Communication channel
Zdroj:	Plasma and Fusion Research. 2:S1073-S1073
ISSN:	1880-6821 2005-2006
Popis:	A new multi-channel diagnostic for fast particles has been developed and successfully tested on the Large Helical Device (LHD) during 2005-2006 experimental campaign. The number of simultaneously used channels was significantly improved from 2 to 20 channels and additional improvements for noise reduction have been made. Same time location of the diagnostic has been changed that allowed one to make measurements in a much wider range of pitch angles from perpendicular to tangential (90-160 degrees). All these improvements allow one to make time, energy, and angle-resolved measurements of charge exchange neutral particles in a single plasma discharge and to check the presence of fast particles loss-cones from LHD plasma in different heating regimes. This new diagnostic can be a very helpful and powerful tool in studying of fast particle distribution in such a complex helical plasma geometry like the one of LHD. Example data from plasma discharges are presented.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3f15d70e6cc31b0e300c0e9511b02482 https://doi.org/10.1585/pfr.2.s1073 Zobrazit plný text záznamu