@article{oai:nifs-repository.repo.nii.ac.jp:00000650,
 author = {Sakamoto,  Ryuichi and Motojima,  Gen and HAYASHI,  Hiromi and Inoue,  Tomoyuki and Ito,  Yasuhiko and Ogawa,  Hideki and TAKAMI,  Shigeyuki and Yokota,  Mitsuhiro and Yamada,  Hiroshi},
 issue = {No. 8},
 journal = {Review of Scientific Instruments},
 month = {Aug},
 note = {A 20 barrel solid hydrogen pellet injector, which is able to inject 20 cylindrical pellets with a diameter and length of between 3.0 and 3.8 mm at the velocity of 1200 m/s, has been developed for the purpose of direct core fueling in LHD (Large Helical Device). The in situ pipe gun concept with the use of compact cryo-coolers enables stable operation as a fundamental facility in plasma experiments. The combination of the two types of pellet injection timing control modes, i.e., pre-programing mode and real-time control mode, allows the build-up and sustainment of high density plasma around the density limit. The pellet injector has demonstrated stable operation characteristics during the past three years of LHD experiments.},
 title = {Twenty barrel in situ pipe gun type solid hydrogen pellet injector for the Large Helical Device},
 volume = {Vol. 84},
 year = {2013}
}