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ARIES Documents -- Meetings Archive

ARIES Conference Call, 11 June 2002

Documented by L. Waganer


Participants:
(ANL) -
(Boeing) Waganer
(DOE) Ku
(FPA) -
(GA) Petzoldt
(GT) -
(INEEL) Sharpe
(LBL) -
(LLNL) Reyes
(MIT) -
(MRC) Rose
(NRL) -
(PPPL) -
(RPI) -
(SNL) Olson
(UCSD) Miller, Najmabadi, Raffray, Tillack, Sze
(UW) El-Guebaly, Syiatoslavsky

Administrative

Les Waganer mentioned the next ARIES meeting date is Monday, July 1, and the morning of Tuesday, July 2. GA will be the host and Ron Petzoldt is in charge of the meeting arrangements and visitor badging. Please let Ron know of your expected visit as he needs to know who is coming to arrange badging. Rene Raffray would like your technical write-up inputs on the thin liquid wall comparison.

Systems Assessment

Ron Miller said he was continuing to work on the modeling of the coolant power flow requirements as a function of repetition rate and other influencing factors. Ron also noted new data available from the HYLIFE-II project.

Chamber Engineering

Beam Propagation - Dale Welch is simulating the assisted pinch beam propagation. He is finding some encouraging results regarding transport efficiency.

Dave Rose and Dale Welch are working on the magnetically sealed plasma trap to keep plasma particles and debris from entering the beamlines. The 3-D LSP simulations model the particle behavior in the magnetic particle divertor, located in the beam ports. The efficiency of the divertor is dependent on the magnet field, particle velocity and particle charge.

Craig Olson just returned from Moscow where he attended the Heavy Ion Symposium. He was invited to give a talk on the work he has been doing. He is converting the talk to an electronic format and will post the talk on the ARIES Web Site.

Igor Sviatoslavsky said he was getting up to speed on the engineering of the thick liquid wall systems. One of the good references was Ralph Moir's March 2001 paper on Flibe cleanup system of HYLIFE-II. He mentioned a lot of target debris materials that could be present. It was cautioned that the ARIES project has eliminated a lot of these as being unsuitable from a waste and economic standpoint and should not be further considered. Igor mentioned that the paper examined a range of flow rates through the waste cleanup system to bound the problem. He also mentioned three processes that could be used:

  • Volatility to remove gases and volatile material and compounds
  • Centrifuge to remove materials of differing densities
  • Chemical separation of materials and compounds

Igor stressed he is still in a learning process at this point.

Dai Kai Sze mentioned that he is looking into the thermodynamics of the HYLIFE-II FLiBe coolant system and is working with Rene and Mike Billone. There is also a question about the vapor pressure of FLiBe. ORNL has measured the vapor pressure at 800°C, which has been extrapolated to the region of interest. UC Berkeley has calculated the values theoretically, but Dai Kai questions if this is sufficiently accurate. Les Waganer asked about the structural material as Dai Kai was concerned if stainless steels (e.g., 304) would be used or if it should be the nanocomposited ferritic steel. Les wants to know the material choice, which determines the structure lifetime. Les will be examining the expected plant availability. Dai Kai will work with Mike Billone to recommend the structural material and lifetime.

Safety

Susanna Reyes has been examining the chemical toxicity of the materials in the power core, primarily those within the coolant system. She mentioned several elements that should be avoided or cautiously used.