title: First measurement of time evolution of electron temperature profiles with Nd:YAG Thomson scattering system on Heliotron J.
abstract: A Nd:YAG Thomson scattering system has been developed for Heliotron J. The system consists of two 550 mJ 50 Hz lasers, large collection optics, and 25 radial channel (∼1 cm spatial resolution) interference polychromators. This measurement system achieves a S/N ratio of ∼50 for low-density plasma (ne ∼ 0.5 × 10(19) m(-3)). A time evolution of electron temperature profiles was measured with this system for a high-intensity gas-puff (HIGP) fueling neutral-beam-injection plasma. The peripheral temperature of the higher-density phase after HIGP recovers to the low-density pre-HIGP level, suggesting that improving particle transport in the HIGP plasma may be possible.
authors.affiliation: Graduate School of Energy Science, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Kenmochi
authors.affiliation: Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Minami
authors.affiliation: Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: C
authors.initials: C
authors.lastname: Takahashi
authors.affiliation: Graduate School of Energy Science, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Tei
authors.affiliation: Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Mizuuchi
authors.affiliation: Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Kobayashi
authors.affiliation: Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Nagasaki
authors.affiliation: Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Nakamura
authors.affiliation: Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Okada
authors.affiliation: Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Kado
authors.affiliation: Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Yamamoto
authors.affiliation: Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Ohshima
authors.affiliation: Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Konoshima
authors.affiliation: Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Shi
authors.affiliation: Graduate School of Energy Science, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: L
authors.initials: L
authors.lastname: Zang
authors.affiliation: Graduate School of Energy Science, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Ohtani
authors.affiliation: Graduate School of Energy Science, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Kasajima
authors.affiliation: Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan.
authors.forename: F
authors.initials: F
authors.lastname: Sano