Task2: Liquid Metal Target Thermo hydraulic and structural analysis of the Eurisol liquid metal target Ashrafi-Nik M. * C.E.R.N, AB Department, ATB Group *Correspondence:

Task2: Liquid Metal Target Window Optimisation Process

Inserting Slat & Hydraulic Blades Mechatronic Slat Fixed Slat Reducing the pressure losses Guiding Liquid metal to hot zone. Note: The pressure losses are decreased by 20% with help of fixed Slat. Hydraulic Blades Task2: Liquid Metal Target 0.8[mm]

Buckling Mood under Static Pressure Task2: Liquid Metal Target Proton Beam Window Normalised Displacement s Centre Thickness 0.8 [mm] Opening Angle 20 [°] Curvature radius 90[mm] Static Pressure 40[Bar]

Task2: Liquid Metal Target Final optimized model Hollowed Airfoil Guide Tube The purpose is to reduce the LM temperature to avoid boiling. This goal is achieved with a peak temperature of 257C, well below the boiling point for 5 Bar (460°C). A maximum temperature of Window Hull is 252 C, which shows that the cooling is moderately efficient, In terms of stresses,

Stress Calculation corresponding to temperature distribution According to Allowable Stress graph admissible is;  Adm = 190[MPa] The margin of safety is therefore: This margin is sufficient to guarantee the window will not break up to 200 [MPa], the limit validated by RCCMR Task2: Liquid Metal Target

Pressure drop corresponding to velocity profile Task2: Liquid Metal Target velocity profile decreases with opposite direction to Y coordinate and around the guide tube. A consequence of that produces pressure gradient in this region. Liquid Metal Pressure Liquid Metal Velocity Computational domain for around guide tube

Stress Calculation corresponding to static pressure P = 10 [Bar] The compression of the cone reduces the tensile stress caused by differential thermal expansion Task2: Liquid Metal Target

Different Beam with Various intensity Task2: Liquid Metal Target Radial Direction [mm] CFD Model 25[mm] Beam CFD Model 15[mm] Beam

Comparison of Von-Mises stress Corresponding to temp distribution Task2: Liquid Metal Target Von-Mises stress(25mm)Von-Mises stress(15mm)

Thickness optimisation for a 25mm beam Task2: Liquid Metal Target 3.5mm 0.8mm 1.3mm

Mesh Optimization Task2: Liquid Metal Target Very Fine MeshFine Mesh Intermediate Mesh Coarse mesh

Temperature Distribution of various meshing Task2: Liquid Metal Target Very Fine MeshFine Mesh Intermediate MeshCoarse mesh

Graphs correspond to differ mesh definition Task2: Liquid Metal Target

Pulse Beam Task2: Liquid Metal Target pulse duration of 1ms and 50 Hz repetition rate (pulse distance = 20ms) and a density power of 4 MW on the target are presented. Monitor Probes Convergence of monitor probes to equilibrium point

Von-Mises stress of pulse beam at s Task2: Liquid Metal Target

Conclusion The final optimisation has yielded a satisfactory solution to the all necessary objectives. Definite advantages from inserting blades and spacers within target hull from the point of view of lower stresses and temperature. A mesh refinement control helped choosing an adequate mesh for the computation. The result of pulse beam was quite divergent, however it is recommended that, study on shock waves and stress propagation as effect of the pulses. Finally, the major goal, which consists in the prediction of erosive effects of gravity in liquid metal flow, has to be followed. This goal can be achieved by simulating 3D model. Task2: Liquid Metal Target