Thermal Analysis Of Fluid-solid Coupled Heat Transfer For Beam Stop And FFC

When beam dump and interceptive beam diagnostic devices are working, thebeam must be deposited on the surface of these devices. The kinetic energy of thebeam is transformed into heat energy and deposited on the devices, through theionization between beam and material. If the temperature caused by beam depositionis higher than the melting point of the material, the equipment would be damaged. Sothermal analysis of these devices is very necessary.In this paper, the simulation objects are Beam Stop and FFC (fast Faraday cup).They are equipped with water cooling system, so it is a fluid-solid coupled heattransfer problem. Choosing the fluent module of ANSYS Workbench software tosimulate.The reasonable heat source model is established by consulting literature andanalyzing&researching similar problems.The steady state thermal analysis of BeamStop is made under continuous waves mode. The beam radius should be larger than7.5mm when the beam power is5.6KW for the planar Beam Stop and the beam radiusshould be larger than15mm when the beam power is21KW for the conical Beam Stop.We discuss the influence of the maximum temperature by the beam power, beamradius and the cooling water flow rate, through analyzing simulated results of theplanar Beam Stop. Finally, we discussing the influence of the temperature distributionby mechanical design, through a one dimensional model, and we bring forward thedesign rules for Beam Stop.This paper also has given the transient thermal analysis of FFC under pulse beam.The pulse width should not be larger than0.001s, when the beam pulse period is1s, the beam power is21KW and the beam radius is5mm. In low frequency and smallpulse width condition, the water cooling system of FFC is not necessary.