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ARIES Documents -- Meetings Archive

ARIES Conference Call, 3 December 2002

Documented by L. Waganer


Participants:
(ANL) -
(Boeing) Waganer
(DOE) -
(FPA) -
(GA) Petzoldt, Turnbull
(GT) Abdel-Khalik
(INEEL) Merrill (Brad)
(LANL) -
(LBNL) Yu
(LLNL) Abbott (Ryan)
(MIT) Bromberg
(MRC) Rose, Welch
(ORNL) -
(NRL) -
(PPPL) Brown, Heitzenroeder, Ku, Neilson, Schmidt
(RPI) -
(SNL) -
(UCSD) Najmabadi, Raffray, Tillack, Sze, Wang
(UW) El-Guebaly

Administrative

Les Waganer reminded the team that the next ARIES meeting dates are January 8, 9, and the morning of Friday, Jan 10, 2003. The meeting will be held at UCSD, San Diego. The IFE presentations will be addressed at the beginning of the meeting just after the administrative items. The CS will be covered during the latter half of the meeting. Les Waganer will issue a draft agenda before the Holiday Break. Please send any topics you wish to present.

UCSD is trying to set up a live TV link. Every presented should send their electronic presentations to Farrokh Najmabadi so that a web site can be constructed with the agenda and links to the electronic presentations. This will allow any remote team member to access the presentation and communicate via a phone number at the meeting room.

Status of Compact Stellarator Technical Areas

Systems Modeling - Long-Poe Ku said after the last meeting he wanted to work with the systems modeling code to address the main reactor performance parameters, hopefully with a figure of merit. He has managed to do several assessments that have been implemented into the code. He also has developed configurations roughly based on the NCSX. One of the main parameters in this study was to maintain MHD stability. Les Waganer noted that he had developed a set of parameters (no values) and would forward them to Long-Poe Ku for consideration.

Reactor Engineering - Phil Heitzenroeder mentioned he has been developing a set of magnetic field plots at the coil conductor centers. He noted the reactor fields are comparable to the NCSX coils, but the currents are larger in the reactor configuration. He would like to know the type of superconductor the team will be considering.

Leslie Bromberg said that he is anxious to receive the field plots from Phil. He will consider both low-temperature superconducting and high-temperature superconducting magnets for the compact stellarator.

René Raffray said he thought we should establish the minimum distance between the plasma and coil center. He thought Laila would be providing guidance on this parameter for both the low-temperature S/C and HT S/C.

Laila-El-Guebaly brought out that she has been developing design guidance regarding the main blanket area. In addition, she mentioned we needed to develop similar guidance regarding the divertor area. It would be helpful if PPPL or ORNL could provide a sketch of the configuration and the blanket and divertor regions.

Farrokh Najmabadi reminded the group he had requested some reading information for the group that would help raise the understanding of the engineering and physics principles involved in the compact stellarator. Jim Lyon had agreed to provide two sets of reference materials for reading.

Maintenance - René Raffray said that Seigfried Malang is temporally working at UCSD and will be helping on the reactor maintenance definition. Les Waganer said he would work closely with Siegfried on this topic.

Status of IFE Technical Areas

Administrative

René Raffray told the group that there still remain some technical papers to document the wetted wall concept analyses have not been submitted. He and Farrokh will list those papers and submission still required and forward the list to the primary authors with inputs still outstanding. All inputs need to be submitted by January 1st.

Chamber Engineering, Magnets, and Beam Propagation

René said that he obtained some calculations from Phil Sharp on the aerosol properties and behavior. These data will be presented at the upcoming meeting.

Liquid Experiments - Liquid Experiments - Said Abdel-Khalik told the group that the GT group is still busy with the liquid experiments and data analysis. They are currently working on the flow around the curved port entrances and porous surfaces.

Beam Transport - Dale Welch said he is continuing to document his beamline transport results. The main emphasis is to define the parametric operational windows for transport into candidate chambers.

Chamber Nuclear Analysis

Laila El-Guebaly said she has completed all the recycling analysis and now she is documenting the study results for the FED special issue. Presently, there is no work being done on shielding for the thick wall concept.

Systems Analysis

Simon Yu said that LLNL is continuing to improve code modeling of the pumping power. He noted the recent materials discussion led by Rene Raffray. The final robust point design has been completed (60 beams on each side). The most effort has been on the final magnet area to better define the shielding and activation, primarily to determine the expected lifetime (currently it is thought to be around 100 full power years).

Target Materials, Injection, and Tracking

Ron Petzoldt is continuing to collect information for potential ID target materials. GA and LANL are also working on determining the commercial processes and costs to produce ID targets in the required quantities and quality.