Talks (non-conference)

The Photoinjector test facility at DESY in Zeuthen develops and characterizes the electron guns for FLASH and Eu-XFEL. It consists of a normal-conducting L-band RF gun cavity with a Cs2Te photocathode, which can produce beam charge up to several nC. [...]

Cosmological evolution of axion field could be significantly modified in the presence of a thermalized hidden sector. We study pure hidden Yang-Mills (YM) gauge fields as an example, which generates friction through the sphaleron processes. [...]

FLASHlab@PITZ is a new setup for radiobiological irradiation experiments at the PITZ (Photo Injector Test stand at DESY, Zeuthen) accelerator. The main purpose is to investigate the FLASH effect and optimize irradiation parameters. [...]

Motivation, options and practice

Understanding the shape of the Higgs potential and the nature of electroweak symmetry breaking is a central goal of particle physics. Extensions of the Standard Model (SM) Higgs sector can lead to rich phenomenology, including modified Higgs self-couplings, new scalar states, and strong first-order phase transitions in the early Universe—potentially sourcing a stochastic gravitational wave background. [...]