mercury beam dump simulations
DESCRIPTION
Mercury Beam Dump Simulations. Tristan Davenne Ottone Caretta Chris Densham STFC Rutherford Appleton Laboratory, UK 1 st joint meeting of EUROnu WP2 (Superbeam) and NF-IDS target 15-17 December-2008. Mercury beam dump design from NUFACT Feasibility Study. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Mercury Beam Dump Simulations](https://reader031.vdocument.in/reader031/viewer/2022020717/568131c3550346895d982bb7/html5/thumbnails/1.jpg)
Mercury Beam Dump Simulations
Tristan Davenne Ottone Caretta Chris Densham
STFC Rutherford Appleton Laboratory, UK
1st joint meeting of EUROnu WP2 (Superbeam) and NF-IDS target
15-17 December-2008
![Page 2: Mercury Beam Dump Simulations](https://reader031.vdocument.in/reader031/viewer/2022020717/568131c3550346895d982bb7/html5/thumbnails/2.jpg)
Mercury beam dump design from NUFACT Feasibility Study
![Page 3: Mercury Beam Dump Simulations](https://reader031.vdocument.in/reader031/viewer/2022020717/568131c3550346895d982bb7/html5/thumbnails/3.jpg)
Peter Loveridge, November-2008
Mercury beam dump design from NUFACT Feasibility Study
![Page 4: Mercury Beam Dump Simulations](https://reader031.vdocument.in/reader031/viewer/2022020717/568131c3550346895d982bb7/html5/thumbnails/4.jpg)
Thermal shocks and magnetohydrodynamics in
highpower mercury jet targets
J Lettry, A Fabich, S Gilardoni, M Benedikt, M
Farhat and E Robert
![Page 5: Mercury Beam Dump Simulations](https://reader031.vdocument.in/reader031/viewer/2022020717/568131c3550346895d982bb7/html5/thumbnails/5.jpg)
Fluka Simulation - Energy deposition in mercury pool with 24GeV beam
How much of the beam energy is absorbed in the beam dump?
![Page 6: Mercury Beam Dump Simulations](https://reader031.vdocument.in/reader031/viewer/2022020717/568131c3550346895d982bb7/html5/thumbnails/6.jpg)
Autodyne
Governing equations
Conservation of• Mass• Momentum• Energy
Achieve solution of governing equations with material models• Equation of state (density = f(pressure, energy))• Strength/failure model
Solution method
Explicit forward marching scheme with small time step to maintain stability
Lagrange or Euler meshing
Peter Loveridge, November-2008
![Page 7: Mercury Beam Dump Simulations](https://reader031.vdocument.in/reader031/viewer/2022020717/568131c3550346895d982bb7/html5/thumbnails/7.jpg)
Agitation ‘eruption’ of mercury pool surface due to 24GeV proton beam Autodyne simulation
Splash following pulse of 20Terra protons
![Page 8: Mercury Beam Dump Simulations](https://reader031.vdocument.in/reader031/viewer/2022020717/568131c3550346895d982bb7/html5/thumbnails/8.jpg)
Damage to underside of stainless steel plate fluid - structure interaction model
maybe sprung baffles would be help reduce damage
![Page 9: Mercury Beam Dump Simulations](https://reader031.vdocument.in/reader031/viewer/2022020717/568131c3550346895d982bb7/html5/thumbnails/9.jpg)
Damage as a result of high speed impact of a mercury dropletStainless Steel vs. Ti-6Al-4V
![Page 10: Mercury Beam Dump Simulations](https://reader031.vdocument.in/reader031/viewer/2022020717/568131c3550346895d982bb7/html5/thumbnails/10.jpg)
Damage as a result of high speed impact of a mercury dropletReduction in momentum during impact (1mm diameter)
![Page 11: Mercury Beam Dump Simulations](https://reader031.vdocument.in/reader031/viewer/2022020717/568131c3550346895d982bb7/html5/thumbnails/11.jpg)
Damage as a result of high speed impact of a mercury dropletChange in contact area and surface pressure during impact (1mm diameter)
![Page 12: Mercury Beam Dump Simulations](https://reader031.vdocument.in/reader031/viewer/2022020717/568131c3550346895d982bb7/html5/thumbnails/12.jpg)
Consider helium bubbles in beam dump to reduce splash velocity
helium
Proton beam
![Page 13: Mercury Beam Dump Simulations](https://reader031.vdocument.in/reader031/viewer/2022020717/568131c3550346895d982bb7/html5/thumbnails/13.jpg)
Mercury beam dump design from NUFACT Feasibility Study
![Page 14: Mercury Beam Dump Simulations](https://reader031.vdocument.in/reader031/viewer/2022020717/568131c3550346895d982bb7/html5/thumbnails/14.jpg)
Agitation of mercury pool surface due to impinging mercury jet
2 phase CFX modelmercury jet velocity = 20m/s
Angle of attack = 5.7°mercury pool surface area = 0.05m2
![Page 15: Mercury Beam Dump Simulations](https://reader031.vdocument.in/reader031/viewer/2022020717/568131c3550346895d982bb7/html5/thumbnails/15.jpg)
Summary
Simulations indicate that mercury splashes with a maximum velocity of 75m/s will result when a pulse from the undisrupted 24GeV beam is absorbed by the mercury beam dump.
A 3mm diameter mercury droplet impacting a stainless steel plate at 75m/s is predicted to cause significant damage. Ti-6Al-4V is predicted to be more resistant to damage due to higher ultimate strength and shear strength.
Significant agitation of the mercury surface also results from the entry of the mercury jet.
04/20/23