The Large Helical Device (LHD) is the world's largest superconducting plasma confinement device, and employs a heliotron magnetic configuration. The objectives are to conduct academic research on confinement of steady-state/high-temperature plasma from the viewpoint of developing the helical-type fusion reactor.
- Multi-ion plasma TG
- Turbulence TG
- Spectroscopy TG
- Instability TG
Rapid report from yesterday's experiment is being discussed. Most of group members including collaborators remotely participate in the meeting via ZOOM.
Fire drill amid LHD experiment performed
Next week schedule
The high performance plasma has not been obtained yet since the start of the experiment in this morning. It is due to the impurities (air, water vapor) in the LHD vacuum vessel, which was caused by the ventilation for the maintenance of diagnostics last week. Thus we have decided to do the baking and glow discharge cleaning to remove the impurities from the vacuum vessel. The experiment will restart from Oct. 27.
Remote Collaboration has started.
Most of collaborations in this year will be performed remotely via ZOOM and the data transfer system newly established in LHD. Today, collaborators in Princeton (USA) participated in the LHD experiment. They could confirm the operation of their instrument installed in LHD.
The LHD 22nd experimental campaign has started.
Drs F. Nespoli, E. Gilson and R. Lunsford (PPPL, USA) visited NIFS to join plasma experiments using impurity powder dropper in LHD. During their stay, they had plasma experiments for three days. They attended long pulse discharges, which is big advantages in LHD experiments, and obtained many data.
Drs. M. Gruca and M. Kubkowska and Ph.D students, Ms. N. Krawczyk and Mr. T. Fornal (from the right side of the photo) from IPPLM, Poland have again come to NIFS. We collaborate on impurity transport study in LHD.
Drs F. Nespoli, E. Gilson and R. Lunsford (PPPL, USA) visited NIFS to join plasma experiments using impurity powder dropper in LHD, from Dec. 2 to Dec.6. We had first experiment using the impurity powder dropper system in LHD, and it was successfully done dropping boron powders by the IPD on Dec.3.
A Ph.D student, Mr. T. Fornal (second from the left), Drs. M. Gurca(second from the right) and M. Kubkowska (the right) from IPPLM, Poland have come to NIFS. We collaborate on impurity transport study in LHD.
Dr. Santhosh Kumar(UW-Madison, USA) comes to NIFS as a visiting researcher and will participate in the LHD experiment.
Dr. Rene Bussiahn(IPP, Germany) and Dr. Kieran J. McCarthy(CIEMAT, Spain) visited NIFS and participated in the LHD experiment.
Dr. F. Ding (ASIPP, China) visited NIFS to join plasma experiment for observations by impurity spectroscopies from Nov.11 to Nov.15, based on JSPS-CAS bilateral collaboration. A picture shows that Drs. F. Ding and T. Oishi visited to LHD hall and they checked statuses of spectroscopies together.
Toki conference has started.
The 28th International Toki Conference is being held during this week (Nov. 5-8).
Mr. T. Fornal (IPPLM, Poland) and Dr. L. Carraro (Consorzio RFX, Italy) visited NIFS and participated with the LHD experiment.
Dr E. Gilson(left) and Dr.R. Lunsford(right) (PPPL, USA) visited NIFS for new installation plan of a powder dropper in LHD.
Dr. Zhang Ling (left) from Institute of Plasma Physics, Chinese Academy of Sciences (Hefei, China) and Dr. Xu Zong (center) from Shenzhen University (Shenzhen, China) have come to NIFS.
Many collaborators and students are staying in NIFS this week
Dr. W. Ko (NFRI, Korea), Mr.A. Knipe and Dr. Y. Liang (FZJ, Germany), Dr. A. Auriemma (Consorzio RFX, Italy),Drs. S. Bozhenkov,S. Akaslompo,and P. Drewelow(IPP Greifswald, Germany) have come to NIFS.
Toki conference has started.
The 27th International Toki Conference is being held during this week (Nov. 19 - 22).
Drs. M. Kubkowska (center), A. Czarnecka (left) from IPPLM, Poland and K.J. McCarthy from CIEMAT, Spain have come to NIFS. We collaborate on plasma diagnostics with them.
A Ph. D. student, Mr. Jan Paul Koschinsky, has come to NIFS from Max Planck Institute fuer Plasma Physik, Germany.
Dr. Tony Donne, program manager of EUROfusion, came to NIFS. He made a presentation about the status and prospects of European fusion research. We also discussed about the collaboration between NIFS and European institutes.
Three students, Ms. T. Tanaka (Nagoya Univ.), Mr. T. Amitani (Nat'l Inst. Tech. Toyama) and Mr. J. Jo (Seoul Nat'l Univ.), have come to NIFS to perform the experiment for their own theses.
Drs. J. Wei, Y. Xie and C. Jiang have come to NIFS from Institute of Plasma Physics Chinese Academy of Sciences, Hefei, China. We collaborate with them on NBI heating research.
Plasma experiment of the 20th LHD campaign has been started.
Transition to the superconducting mode was confirmed.
Final inspection in the torus hall completed.
Cryogenic system for superconducting coils
Cryogenic system for superconducting coils has started the operation.
A scene at the LHD daily meeting.
Results of the yesterday's experiment and the schedule of the today's experiment are presented.
First deuterium plasma
A first deuterium plasma has been ignited.