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000425664 0247_ $$2arXiv$$aarXiv:1902.07744
000425664 0247_ $$2datacite_doi$$a10.3204/PUBDB-2019-03341
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000425664 0881_ $$aDESY-19-033; arXiv:1902.07744
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000425664 088__ $$2arXiv$$aarXiv:1902.07744
000425664 1001_ $$0P:(DE-H253)PIP1021777$$aDietrich, Felix$$b0
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000425664 245__ $$aStatus of the undulator-based ILC positron source
000425664 260__ $$c2019
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000425664 520__ $$aThe design of the positron source for the International Linear Collider (ILC) is still under consideration. The baseline design plans to use the electron beam for the positron production before it goes to the IP. The high-energy electrons pass a long helical undulator and generate an intense circularly polarized photon beam which hits a thin conversion target to produce $e^+e^-$ pairs. The resulting positron beam is longitudinally polarized which provides an important benefit for precision physics analyses. In this paper the status of the design studies is presented with focus on ILC250. In particular, the target design and cooling as well as issues of the optical matching device are important for the positron yield. Some possibilities to optimize the system are discussed.
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000425664 7001_ $$0P:(DE-H253)PIP1011115$$aMoortgat-Pick, Gudrid$$b1$$udesy
000425664 7001_ $$0P:(DE-H253)PIP1003733$$aRiemann, Sabine$$b2$$eCorresponding author$$udesy
000425664 7001_ $$aSievers, Peter$$b3
000425664 7001_ $$aUshakov, Andriy$$b4
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