IPAC2014 - List of Authors (Moortgat-Pick, G.A.)

Paper	Title	Page
TUPME001	Heat Load, Stress and Reaction Force Studies of a Polarized Positron Production Target for the Future International Linear Collider	1331
	F. Staufenbiel, S. Riemann DESY Zeuthen, Zeuthen, Germany G.A. Moortgat-Pick, A. Ushakov University of Hamburg, Hamburg, Germany
	The International Linear Collider requires an intense polarized positron beam with yields of about 10¹⁴ positrons per second. A polarized positron beam can be produced with a helical undulator passed by the accelerated electron beam to create a high power polarized photon beam. The photon beam penetrates a thin titanium-alloy rotating target wheel of 1m diameter with 500 to 2000 rpm rotation speed and produces polarized positrons. The system should run for 1-2 years without failure. A break down can occur due to the huge heat load in a short time (<1ms). The target design must keep the resulting thermo-mechanical stress below the yield strength and the fatigue limit of the material. FEM ANSYS simulations are used to evaluate the thermo-mechanical stress as well as the vibrations at the bearings of the rotating system. Results are presented with the goal to optimize the target wheel design parameters for a long lifetime.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPME001
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Paper

Title

Page

Heat Load, Stress and Reaction Force Studies of a Polarized Positron Production Target for the Future International Linear Collider

1331

F. Staufenbiel, S. Riemann
DESY Zeuthen, Zeuthen, Germany
G.A. Moortgat-Pick, A. Ushakov
University of Hamburg, Hamburg, Germany

The International Linear Collider requires an intense polarized positron beam with yields of about 10¹⁴ positrons per second. A polarized positron beam can be produced with a helical undulator passed by the accelerated electron beam to create a high power polarized photon beam. The photon beam penetrates a thin titanium-alloy rotating target wheel of 1m diameter with 500 to 2000 rpm rotation speed and produces polarized positrons. The system should run for 1-2 years without failure. A break down can occur due to the huge heat load in a short time (<1ms). The target design must keep the resulting thermo-mechanical stress below the yield strength and the fatigue limit of the material. FEM ANSYS simulations are used to evaluate the thermo-mechanical stress as well as the vibrations at the bearings of the rotating system. Results are presented with the goal to optimize the target wheel design parameters for a long lifetime.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPME001

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)