title: Improving measurement accuracy by optimum data acquisition for Nd:YAG Thomson scattering system.
abstract: A new high speed Nd:YAG Thomson scattering AD Convertor (HYADC) that can directly convert the detected scattered light signal into a digital signal is under development. The HYADC is expected to improve a signal to noise ratio of the Nd:YAG Thomson scattering measurement. The data storage of the HYADC which is required for the direct conversion of whole plasma discharge is drastically reduced by a ring buffer memory and a stop trigger system. Data transfer of the HYADC is performed by the SiTCP. The HYADC is easily expandable to a multi-channel system by the distributed data processing, and is very compact and easy to implement as a built-in system of the polychromators.
authors.affiliation: Institute of Advanced Energy, Kyoto University, Gokasho,Uji, Kyoto 611-011, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Minami
authors.affiliation: National Institute for Fusion Science, Oroshi, Toki-shi, Gifu 509-5292, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Itoh
authors.affiliation: National Institute for Fusion Science, Oroshi, Toki-shi, Gifu 509-5292, Japan.
authors.forename: I
authors.initials: I
authors.lastname: Yamada
authors.affiliation: National Institute for Fusion Science, Oroshi, Toki-shi, Gifu 509-5292, Japan.
authors.forename: R
authors.initials: R
authors.lastname: Yasuhara
authors.affiliation: National Institute for Fusion Science, Oroshi, Toki-shi, Gifu 509-5292, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Funaba
authors.affiliation: National Institute for Fusion Science, Oroshi, Toki-shi, Gifu 509-5292, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Nakanishi
authors.affiliation: Japan Atomic Energy Agency, 311-0193, Mukoyama, Naka, Ibaraki 801-1, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Hatae