ARIES Documents -- Meetings ArchiveARIES Conference Call, 12 October 2004
Documented by L. Waganer
The following ARIES meeting will be held at the University of California, San Diego on November 4 (Thursday) and half a day November 5 (Friday).
Farrokh noted the DOE briefing conducted by Farrokh Najmabadi, Rene Raffray, Jim Lyon, and Long-Poe Ku went very well, with DOE being very complementary about the ARIES results presented on the ARIES Compact Stellarator. Les Waganer mentioned that Al Opdenaker told him also that the briefing was very favorably received. "Good job by the ARIES Team."
Compact Stellarator Integrated Systems Assessment
Systems Code Analysis - Jim Lyon told the team that he is making good progress on updating and validating his existing code, but the process is laborious and time-consuming. He is using a 1-D POPCON code to help verify the 0-D systems code results. He did find and correct an incorrect radiation power result. He feels his systems code results are now within 5-10 % of the correct value. He will be incorporating the cost data that Les Waganer has provided and Lailaís radial builds for the baseline blanket concept. This will enable him to run the economic portion of the code providing some preliminary data for assessment.
Compact Stellarator Reactor Physics Basis
Assessment of New QAS and QH configurations - Long-Poe Ku has been developing and analyzing new configurations with the intent of finding configurations with aspect ratios as low as 4.5 and low prompt alpha losses (<10%). These configurations are both QAS and QHS plasma and coil configurations.
Analysis to the 2-Field Period Configuration - Paul Garabedian mentioned collaboration with TK Mau and LP Ku on the 2-FP configurations. He noted he has obtained good results with low alpha particle loss, although the physical size still remains relatively large.
Analysis of Prompt Alpha Loss - TK Mau said he has been using the ORBIT3D code to map the alpha particles for several of the configurations that L-P Ku has previously provided. He has also correctly converted the configurations from Boozer coordinates to regular coordinates.
TK mentioned that Hayden McGuinness visited UCSD. TK has organized a Divertor Working Group to help define, develop, and analyze the divertor configurations for the ARIES concepts. TK and Hayden defined a divertor plan for next year. Hayden will be asked to provide the ARIES team a briefing of his efforts and results in November.
Compact Stellarator Reactor Engineering Assessment
CS Divertor - See prior discussion on Divertor.
Power Core Engineering - Rene Raffray reminded the team that the Engineering Group is retaining both the Modular and Field Period Maintenance approaches for further development and evaluation next year. Siegfried Malang will be assisting in this effort as he is in residence at UCSD into next year. Also, more effort will be directed toward additional definition on the dual cooled, LiPb/He/FS structure modules with the internal vacuum vessel. He also wanted to obtain a better definition of how the divertor is configured, operates, and is located within the plasma chamber. The Engineering Group will be working with the Divertor Group to assure all requirements are met.The LOFA/LOCA analysis is being improved with some of the suggestions from the September meeting. Carl Martin from UW-Madison will present updated results at the November meeting.
Neutronic Analysis - Laila suggested we might want to include a SiC insert in the LiPb concepts. She is defining the specific composition for Jim Lyon. More details will be available at the November meeting. She will also be providing additional information at the next meeting on the CAD-defined MCNP code model for the neutron wall loading calculations.