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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
C.S. Debonnel1,2, S.S. Yu2, P.F. Peterson1
(1) Thermal Hydraulics LaboratoryDepartment of Nuclear EngineeringUniversity of California, Berkeley
(2) Accelerator & Fusion Research DivisionLawrence Berkeley National Laboratory
Heavy-Ion Inertial Fusion Virtual National Laboratory
ARIES Meeting, Madison, April 22, 2002
Strategies to Control the Heavy-Ion Beam Line Gas Density and Pressure in the HYLIFE Thick-
Liquid Chamber
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
9x9-beam Hybrid HYLIFE II configuration
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
Cut-away view shows beam and target injection paths
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
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
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
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
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
Axially symmetric 9x9 – Density Contour Plots
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
Show Time!
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
Axially symmetric 9x9 – Pressure Contour Plots
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
Impulse Load on Target-Facing Liquid Structures
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
Centerline Beam Port: Integrated Mass Flux
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
Centerline Beam Port: Integrated Energy Flux
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
Centerline Beam Port: Pressure
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
Centerline Beam Port: Velocities
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
Key heavy-ion thick-liquid chambers phenomena include gas dynamics and vapor condensation in the
target chamber and in the beam tubes
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
Strategies to Prevent Debris Deposition in the Beam Tubes (II)
• Liquid Vortex
• Ablation
• Condensation
• Magnetic sweeper
• Mechanical shutter
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
Centerline Beam Port: Density
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The Heavy Ion Fusion Virtual National Laboratory
UC Berkeley
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