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TJ-II:Diagnostic neutral beam: Difference between revisions
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[[TJ-II]] has a compact diagnostic neutral beam injector, designed for performing spatially resolved charge exchange recombination spectroscopy and neutral particle analysis measurements. It is located in [[TJ-II:Sectors|sector]] A7 and it is currently employed to obtain radial profiles of impurity ion (carbon) temperature and velocity. | [[TJ-II]] has a compact diagnostic neutral beam injector, designed for performing spatially resolved charge exchange recombination spectroscopy and neutral particle analysis measurements. It is located in [[TJ-II:Sectors|sector]] A7 and it is currently employed to obtain radial profiles of impurity ion (carbon) temperature and velocity. | ||
<ref>[http://link.aip.org/link/?RSINAK/75/3499/1 K.J. McCarthy et al, ''Diagnostic neutral beam injector and associated diagnostic systems for the TJ-II stellarator device'', Rev. Sci. Instrum. '''75''', 3499 (2004)]</ref> | <ref>[http://link.aip.org/link/?RSINAK/75/3499/1 K.J. McCarthy et al, ''Diagnostic neutral beam injector and associated diagnostic systems for the TJ-II stellarator device'', Rev. Sci. Instrum. '''75''', 3499 (2004)]</ref> | ||
The injector, an upgraded DINA-5 model, is supported on a mobile cradle that permits its path through the plasma to be varied by ±3° poloidally. In parallel, a dedicated bidirectional (two vertical opposing views) multichannel spectroscopic diagnostic, incorporating fiber arrays, an f/1.8 spectrograph, and a back-illuminated charge-coupled device, has been installed to obtain Doppler line shifts and widths (around 529.2 nm) with ~1 cm spatial resolution. | |||
<ref>[http://link.aip.org/link/?RSINAK/77/10F107/1 J.M. Carmona et al, ''Charge-exchange spectroscopic diagnostic for the TJ-II stellarator'', Rev. Sci. Instrum. '''77''', 10F107 (2006)]</ref> | <ref>[http://link.aip.org/link/?RSINAK/77/10F107/1 J.M. Carmona et al, ''Charge-exchange spectroscopic diagnostic for the TJ-II stellarator'', Rev. Sci. Instrum. '''77''', 10F107 (2006)]</ref> | ||
== References == | == References == | ||
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