Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 40: Methods in Particle Physics II (Misc.)

T 40.7: Vortrag

Dienstag, 1. April 2025, 17:45–18:00, VG 4.101

Polarized Positron Production for HALHF concept — •Malte Trautwein, Manuel Formela, and Gudrid Moortgat-Pick — University of Hamburg

The HALHF concept represents an energy-efficient and cost-effective alternative to Higgs production using plasma-accelerated electrons and SRF accelerated positrons. The energy asymmetry of electrons (500 GeV) and positrons (31.3 GeV) reduces the overall effort of the acceleration process. An optimised positron source is required for eventful collision processes and for providing polarized beams to optimze the physics potential. Therefore, CAIN simulations are used to generate photon distributions originating from a helical undulator setup. The photon spectra are influenced by parameters such as the undulator strength parameter K, the spatial period of undulator λ_u or the drive beam energy E. The aim is to optimize a set of suitable parameters to generate a matching (polarized) positron spectrum and simultaneously maximise positron yield.

Keywords: Positron Source; Polarized Positrons; Positron Yield; HALHF