@article{oai:nifs-repository.repo.nii.ac.jp:00010874, author = {OSAKABE, Masaki and TAKEIRI, Yasuhiko and MORISAKI, Tomohiko and MOTOJIMA, Gen and OGAWA, Kunihiro and ISOBE, Mitsutaka and TANAKA, Masahiro and MURAKAMI, Sadayoshi and SHIMIZU, Akihiro and NAGAOKA, Kenichi and NAGAOKA, Ken-ichi and TAKAHASHI, Hiromi and NAGASAKI, Kazunobu and takahashi and FUJITA, T. and Oya, Yasuhisa and Sakamoto, M. and Ueda, Y. and AKIYAMA, Tsuyoshi and KASAHARA, Hiroshi and SAKAKIBARA, Satoru and SAKAMOTO, Ryuichi and TOKITANI, Masayuki and YAMADA, Hiroshi and YOKOYAMA, Masayuki and YOSHIMURA, Yasuo and LHD, Experiment Group}, journal = {Fusion Science and Technology}, month = {Jul}, note = {0000-0001-5220-947X, Achievement of reactor relevant plasma condition in Helical type magnetic devices and exploration in its related plasma physics and fusion engineering are the aim of the Large Helical Device (LHD) project. In the recent experiments on LHD, we have achieved ion-temperature of 8.1 keV at 1 × 1019 m−3 by the optimization of wall conditioning using long pulse discharge by Ion Cyclotron Heating (ICH). The electron temperature of 10 keV at 1.6 × 1019 m−3 was also achieved by the optimization of Electron Cyclotron Heating (ECH). For further improvement in plasma performance, the upgrade of the Large Helical Device (LHD), including the deuterium experiment, is planned. In this paper, the recent achievements on LHD and the upgrade of LHD are described.}, pages = {199--210}, title = {Current Status of Large Helical Device and Its Prospect for Deuterium Experiment}, volume = {72}, year = {2017} }