LHD ( Large Helical Devicef project
نویسندگان
چکیده
The t-arge Helical Device (LHD), the large scale superconducting helical device, is under construction at the National Institute for Fusion Science and is now in the last year of the g-year construction schedule. The outline of the LHD program, the status of the on-site construction are described. The confinement and steady state operation are experimentally studied on high temperature plasmas relevant for fusion plasmas in a helical device with a size comparable with large tokamaks. The device will be completed at the end of 1997 and the initial operation, cooling down and the machine running will start from the beginning of 1998.
منابع مشابه
Achievements and Continued New Phase of the Large Helical Device
This paper reviews major achievements in the large helical device (LHD) project and discusses the prospects in the upcoming nearest future. The LHD is the largest magnetic confinement device among diversified helical systems and employs superconducting coils. These significant features have enabled comprehensive studies on steady-state net-current free plasmas with plasma parameters comparable ...
متن کاملDesign of Correcting Mirrors for a Gyrotron Used at Large Helical Device
We report the design of a mirror correcting system used at the Large Helical Device (LHD) to convert the output radiation of the CPI 84 GHz gyrotron into the HE11 mode of a corrugated waveguide transmission line. The radiation pattern of the gyrotron is measured using an IR camera at LHD. The measured data is analyzed at MIT to retrieve the phase distribution of the radiation. The moments of th...
متن کاملDesign Windows and Cost Analysis on Helical Reactor
Based on the recent experiment results of LHD and the magnet technology-cost basis developed for ITER construction, the design window of helical reactors are analyzed. For searching design windows and investigating their economical potential, we have developed a mass-cost estimating model linked with system design code (HeliCos). We found that the LHD-type helical reactor has the technically an...
متن کاملDevelopment and Fabrication of Folded Waveguide Antenna for the Large Helical Device
We report a development and fabrication of an folded waveguide (FWG) antenna to produce and heat the plasma via ion Bernstein wave on the Large Helical Device (LHD) in the ion cyclotron range of frequency (ICRF). This antenna is 428 mm in height, 1050 mm in width and 3950 mm in length with 23 vanes and 24 folds. It will be installed to the horizontal vacuum port with an inclination angle of 38....
متن کاملFast ion charge exchange spectroscopy adapted for tangential viewing geometry in LHD.
A tangential Fast Ion Charge eXchange Spectroscopy is newly applied on a Large Helical Device (LHD) for co/countercirculating fast ions, which are produced by high energy tangential negative-ion based neutral beam injection. With this new observation geometry, both the tangential-neutral beam (NB) and a low-energy radial-NB based on positive ions can be utilized as probe beams of the measuremen...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1997