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C.S. Debonnel 1,2 , S.S. Yu 2 , P.F. Peterson 1 (1) Thermal Hydraulics Laboratory

Strategies to Control the Heavy-Ion Beam Line Gas Density and Pressure in the HYLIFE Thick-Liquid Chamber. C.S. Debonnel 1,2 , S.S. Yu 2 , P.F. Peterson 1 (1) Thermal Hydraulics Laboratory Department of Nuclear Engineering University of California, Berkeley

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C.S. Debonnel 1,2 , S.S. Yu 2 , P.F. Peterson 1 (1) Thermal Hydraulics Laboratory

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  1. Strategies to Control the Heavy-Ion Beam Line Gas Density and Pressure in the HYLIFE Thick-Liquid Chamber C.S. Debonnel1,2, S.S. Yu2, P.F. Peterson1 (1) Thermal Hydraulics Laboratory Department of Nuclear Engineering University of California, Berkeley (2) Accelerator & Fusion Research Division Lawrence Berkeley National Laboratory Heavy-Ion Inertial Fusion Virtual National Laboratory ARIES Meeting, Madison, April 22, 2002

  2. 9x9-beam Hybrid HYLIFE II configuration

  3. Cut-away view shows beam and target injection paths

  4. Strategies to Prevent Debris Deposition in the Beam Tubes (I) • Design efficient target chamber structures • Mass and energy fluxes at the entrance of beam ports should be as low as possible • Venting in target chamber has been modeled to determine inlet boundary conditions for the beam tubes

  5. The TSUNAMI 2.8.1 Code • TranSient Upwind Numerical Analysis Method for Inertial confinement fusion • Provides estimates of the gas dynamics behavior during the venting process in inertial confinement energy systems • Ideal gas equation (gives conservative results) • Solves Euler’s equations for compressible flows • Two-dimensional, axially symmetric pocket

  6. Axially symmetric 9x9 – Density Contour Plots

  7. Show Time!

  8. Axially symmetric 9x9 – Pressure Contour Plots

  9. Impulse Load on Target-Facing Liquid Structures

  10. Centerline Beam Port: Integrated Mass Flux

  11. Centerline Beam Port: Integrated Energy Flux

  12. Centerline Beam Port: Pressure

  13. Centerline Beam Port: Velocities

  14. Key heavy-ion thick-liquid chambers phenomena include gas dynamics and vapor condensation in the target chamber and in the beam tubes

  15. Strategies to Prevent Debris Deposition in the Beam Tubes (II) • Liquid Vortex • Ablation • Condensation • Magnetic sweeper • Mechanical shutter

  16. Centerline Beam Port: Density

  17. Current & Future Work: Gas Transport in Beam Lines • Detail Geometrical Modeling of Beam Tubes • Improving the Physics in TSUNAMI: • Condensation, Evaporation • Real gas equation • Radiative Transport

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