Polarized positrons for the ILC - update on simulations
A. Ushakov (1), O. S. Adeyemi (1), G. Moortgat-Pick (1), F., Staufenbiel (2), S. Riemann (2) ((1) II. Institute for Theoretical Physics,, University of Hamburg, Germany, (2) DESY Standort Zeuthen, Germany)
TL;DR
This paper updates simulations for producing polarized positrons at the ILC, focusing on heat deposition and stress analysis in the target using FLUKA and ANSYS tools.
Contribution
It provides new simulation data on heat deposition and stress in the target for polarized positron production at the ILC.
Findings
High heat density in the target identified
Stress levels after one bunch train quantified
Simulation results inform target design improvements
Abstract
To achieve the extremely high luminosity for colliding electron-positron beams at the future International Linear Collider (ILC) an undulator-based source with about 230 meters helical undulator and a thin titanium-alloy target rim rotated with tangential velocity of about 100 meters per second are foreseen. The very high density of heat deposited in the target has to be analyzed carefully. The energy deposited by the photon beam in the target has been calculated in FLUKA. The resulting stress in the target material after one bunch train has been simulated in ANSYS.
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