TJ-II:Helium Beam: Difference between revisions

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It is located at φ = 355.3° ([[TJ-II:Sectors|sector]] C8).
It is located at φ = 355.3° ([[TJ-II:Sectors|sector]] C8).
The signals are stored in the [[TJ-II:Shot database|TJ-II database]] with the names 'He_xxx_yy', where 'xxx' is the wavelength in nm (667, 706, or 728), while 'yy' is the position (from 01 through 16).
 
== Data description ==
The Helium beam pulse shape is stored in the [[TJ-II:Shot database|TJ-II database]] with the name 'HELIO_HAZ'.
The detected line emission signals are stored with the names 'He_xxx_yy', where 'xxx' is the wavelength in nm (667, 706, or 728), while 'yy' is the position (from 01 through 16).
[[File:TJ-II He beam.jpg|400px|thumb|left|Photo of He beam diagnostic (top port)]]  
[[File:TJ-II He beam.jpg|400px|thumb|left|Photo of He beam diagnostic (top port)]]  


== References ==
== References ==
<references />
<references />

Revision as of 09:51, 20 August 2010

The TJ-II Helium beam diagnostic

TJ-II possesses a supersonic Helium beam diagnostic based on the line ratio method. [1] [2] [3] It provides profiles of the electron temperature and density in the plasma edge at a repetition rate of up to 200 Hz.

It is located at φ = 355.3° (sector C8).

Data description

The Helium beam pulse shape is stored in the TJ-II database with the name 'HELIO_HAZ'. The detected line emission signals are stored with the names 'He_xxx_yy', where 'xxx' is the wavelength in nm (667, 706, or 728), while 'yy' is the position (from 01 through 16).

Photo of He beam diagnostic (top port)

References