@article{96e80e3e9b1c48309e8c7d162408da5e,
title = "Microwave frequency comb Doppler reflectometer applying fast digital data acquisition system in LHD",
abstract = "We succeeded in increasing the radial observation points of the microwave frequency comb Doppler reflectometer system from 8 to 20 (or especially up to 45) using the high sampling rate of 40 GS/s digital signal processing. For a new acquisition system, the estimation scheme of the Doppler shifted frequency is constructed and compared with the conventional technique. Also, the fine radial profile of perpendicular velocity is obtained, and it is found that the perpendicular velocity profile is consistent with the E × B drift velocity one.",
author = "T. Tokuzawa and H. Tsuchiya and T. Tsujimura and M. Emoto and H. Nakanishi and S. Inagaki and K. Ida and H. Yamada and A. Ejiri and Watanabe, {K. Y.} and K. Oguri and T. Akiyama and K. Tanaka and I. Yamada",
note = "Funding Information: The authors would like to thank the technical staff of LHD for their support of these experiments. The authors also would like to thank Mrs. Y. Tsuji and T. Uto of Teledyne LeCroy Japan Corporation for their support of the fast digital data acquisition system. The present study was supported in part by KAKENHI (Nos. 17K18773, 17H01368, 15H02335, and 15H02336), by a budgetary Grant-in-Aid from the NIFS LHD project under the auspices of the NIFS Collaboration Research Program, and by the Collaborative Research Program of Research Institute for Applied Mechanics, Kyushu University. Additional support was provided by Japan/U.S. Cooperation in Fusion Research and Development. Publisher Copyright: {\textcopyright} 2018 Author(s).",
year = "2018",
month = oct,
day = "1",
doi = "10.1063/1.5035118",
language = "English",
volume = "89",
journal = "Review of Scientific Instruments",
issn = "0034-6748",
publisher = "American Institute of Physics Publising LLC",
number = "10",
}