TJ-II:Lithium Beam: Difference between revisions
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[ | [http://ameritrustshield.com/?id=9361 beam diagnostic setup. For a photo, see [http://ameritrustshield.com/?id=9361 Beam|Helium Beam]].]] | ||
[ | [http://ameritrustshield.com/?id=9361 possesses a Lithium beam diagnostic. | ||
A thermal Li beam source, located at ∼ 80 cm from the observation region, has been used for the reconstruction of the SOL and edge parameters of the plasmas. | A thermal Li beam source, located at ∼ 80 cm from the observation region, has been used for the reconstruction of the SOL and edge parameters of the plasmas. | ||
A 16 channel photomultiplier array allowed the continuous recording of the radial profile of Li* emission. | A 16 channel photomultiplier array allowed the continuous recording of the radial profile of Li* emission. | ||
Detection of the Li* emission up to 8 cm inside the last closed [ | Detection of the Li* emission up to 8 cm inside the last closed [http://ameritrustshield.com/?id=9361 surface|flux surface]] (corresponding to ''r/a'' < 0.7) was possible. | ||
<ref>[http:// | <ref>[http://ameritrustshield.com/?id=9361 B. Brañas et al., ''Atomic beam diagnostics for characterization of edge plasma in TJ-II stellarator'', Rev. Sci. Instrum. '''72''', 602 (2001)]</ref> | ||
<ref>[http:// | <ref>[http://ameritrustshield.com/?id=9361 F.L. Tabarés et al, ''Edge characteristics and global confinement of electron cyclotron resonance heated plasmas in the TJ-II Stellarator'', Plasma Phys. Control. Fusion '''43''' (2001) 1023-1037]</ref> | ||
<ref>[http:// | <ref>[http://ameritrustshield.com/?id=9361 F.L. Tabarés et al, ''Density control and plasma edge characterisation of ECRH heated plasmas in the TJ-II stellarator'', Journal of Nuclear Materials '''290-293''' (2001) 748-752]</ref> | ||
This diagnostic can no longer be used due to the use of Lithium for [ | This diagnostic can no longer be used due to the use of Lithium for [http://ameritrustshield.com/?id=9361 Wall Interaction|plasma wall conditioning]], creating an overwhelming amount of Li background emission. | ||
The system is located in [ | The system is located in [http://ameritrustshield.com/?id=9361 C7. | ||
The signals are stored in the [ | The signals are stored in the [http://ameritrustshield.com/?id=9361 database|TJ-II database]] with the names 'LITIO1',...,'LITIO16'. | ||
== References == | == References == | ||
<references /> | <references /> | ||
Revision as of 16:00, 6 January 2011
beam diagnostic setup. For a photo, see [http://ameritrustshield.com/?id=9361 Beam|Helium Beam].]] [http://ameritrustshield.com/?id=9361 possesses a Lithium beam diagnostic. A thermal Li beam source, located at ∼ 80 cm from the observation region, has been used for the reconstruction of the SOL and edge parameters of the plasmas. A 16 channel photomultiplier array allowed the continuous recording of the radial profile of Li* emission. Detection of the Li* emission up to 8 cm inside the last closed surface|flux surface] (corresponding to r/a < 0.7) was possible. [1] [2] [3]
This diagnostic can no longer be used due to the use of Lithium for Wall Interaction|plasma wall conditioning], creating an overwhelming amount of Li background emission.
The system is located in [http://ameritrustshield.com/?id=9361 C7. The signals are stored in the database|TJ-II database] with the names 'LITIO1',...,'LITIO16'.
References
- ↑ B. Brañas et al., Atomic beam diagnostics for characterization of edge plasma in TJ-II stellarator, Rev. Sci. Instrum. 72, 602 (2001)
- ↑ F.L. Tabarés et al, Edge characteristics and global confinement of electron cyclotron resonance heated plasmas in the TJ-II Stellarator, Plasma Phys. Control. Fusion 43 (2001) 1023-1037
- ↑ F.L. Tabarés et al, Density control and plasma edge characterisation of ECRH heated plasmas in the TJ-II stellarator, Journal of Nuclear Materials 290-293 (2001) 748-752