Liquid Lead Bismuth Target for Positron Production
Intro
Need for positrons
Conventional W target (for a 10 MeV electron beam) – power limits?
Liquid metal targets as an alternative=
Beam Power capability of W -vs- LBE
Simple 1D calculations of heat transfer and temperature gradients
If we can back it up with ANSYS that would be great
Impact of windows on positron production
Walls might be needed for liquid LBE – windowless design is tricky
Effect of thin windows (different materials, different thickness) needs to be evaluated - by how much the production rate drops
Impact of LBE flow rate
Maximum LBE flow rate is defined by corrosion and depends on the material of the window (~ 2 m/s)
Limit on the flow rate means limit on the beam current and e+ production rate.
Conclusions
References
Positrons