Development of a Double-Pass Thomson Scattering System in the TST-2 Spherical Tokamak

Junichi HIRATSUKA, Akira EJIRI, Makoto HASEGAWA, Yoshihiko NAGASHIMA, Yuichi TAKASE, Hiroshi TOJO, Takashi YAMAGUCHI, Takanori AMBO, Hidetoshi KAKUDA, Takuya SAKAMOTO, Ryota SHINO, Masateru SONEHARA (+2 others)
2011 Plasma and Fusion Research  
A double-pass Thomson scattering system, in which a laser pulse makes a round trip through the plasma, was constructed. Using the same optics and a fast detection unit, we can resolve backward and forward scattering pulses in the signal. Because these scatterings reflect velocity distribution along different directions, electron temperature anisotropy can be estimated from the double-pass Thomson scattering system.
doi:10.1585/pfr.6.1202133 fatcat:dzvv6mqx75bhxbocgt3jt44f3e