Fast Reciprocating Probe System :
(Distance of slow movement is extended from 15 to 28 cm at 1997 April)
Probe head design was modified at the end of 1997 :
Three Langmuir probes are mounted on probe head (1994-1997) :
Double probe for Te, Is measurement and a floating probe for plasma potential measurement.
Five Langmuir probes are mounted on probe head (1998- ) :
Two double probes for Te, Is measurement at up-stream and down-stream sides of the field lines, and a floating probe for plasma potential measurement.
