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TJ-II:Spectroscopy: Difference between revisions
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[[TJ-II]] disposes of an eight-channel, high-resolution, spectroscopic diagnostic system. This system is currently being used to measure impurity ion temperature and poloidal rotation using passive emission spectroscopy. The principal features of the diagnostic include independent focusing of its channels, high sensitivity for performing Doppler measurements in low-density [[TJ-II:Electron Cyclotron Resonant Heating|ECR-heated]] plasmas, as well as a flexible and fast in-house-developed software program for performing integrated data reduction and analysis. | [[TJ-II]] disposes of an eight-channel, high-resolution, spectroscopic diagnostic system. This system is currently being used to measure impurity ion temperature and poloidal rotation using passive emission spectroscopy. The principal features of the diagnostic include independent focusing of its channels, high sensitivity for performing Doppler measurements in low-density [[TJ-II:Electron Cyclotron Resonant Heating|ECR-heated]] plasmas, as well as a flexible and fast in-house-developed software program for performing integrated data reduction and analysis. | ||
<ref>[http://link.aip.org/link/?RSINAK/72/971/1 A. Baciero et al, Rev. Sci. Instrum. '''72''' | <ref>[http://link.aip.org/link/?RSINAK/72/971/1 A. Baciero et al, ''A multi-channel spectroscopic system for measuring impurity ion temperatures and poloidal rotation velocities in TJ-II'', Rev. Sci. Instrum. '''72''' (2001) 971]</ref> | ||
Another method for measuring absolutely calibrated rotation velocities consists of simultaneously recording the emission lines from the plasma and from a calibration lamp by means of a double fiber-fiber guide. | Another method for measuring absolutely calibrated rotation velocities consists of simultaneously recording the emission lines from the plasma and from a calibration lamp by means of a double fiber-fiber guide. | ||
<ref>[http://link.aip.org/link/?RSINAK/77/033506/1 D. Rapisarda et al, Rev. Sci. Instrum. '''77''' | <ref>[http://link.aip.org/link/?RSINAK/77/033506/1 D. Rapisarda et al, ''Novel passive spectroscopy system for absolutely referenced plasma rotation measurements in clean plasmas'', Rev. Sci. Instrum. '''77''' (2006) 033506]</ref> | ||
A vacuum ultraviolet spectrometer is used for performing spectral surveys and specialized plasma studies. | A vacuum ultraviolet spectrometer is used for performing spectral surveys and specialized plasma studies. | ||
<ref>[http://link.aip.org/link/?APCPCS/1058/219/1 K.J. McCarthy et al, AIP Conf. Proc. '''1058''' (2008) 219-221]</ref> | <ref>[http://link.aip.org/link/?RSINAK/70/312/1 K.J. McCarthy et al, ''A toroidal focusing mirror based vacuum ultraviolet diagnostic for TJ-II'', Rev. Sci. Instrum. '''70''' (1999) 312]</ref> | ||
<ref>[http://link.aip.org/link/?APCPCS/1058/219/1 K.J. McCarthy et al, ''A Study of Spectral Lines in Plasmas Heated by Neutral Beam Injection in the TJ-II Stellarator'', AIP Conf. Proc. '''1058''' (2008) 219-221]</ref> | |||
== References == | == References == | ||
<references /> | <references /> | ||