Contribution to a book

We report on the pulse characterization of octave spanning pulses in the mid-infrared. By adapting two-dimensional shearing interferometry, we achieve precise quantitative measurements of octave spanning pulses..

The PETRA IV storage ring currently under development at DESY will require a third harmonic 1.5 GHz RF-system to prevent negative effects on both, lifetime and emittance, caused by Touschek effect and Intrabeam scattering. These cavities lengthen the bunches and thereby reduce their charge density. [...]

Gun5, the new generation of high-gradient normal conducting 1.3 GHz RF guns for linac driven free-electron lasers like FLASH and European XFEL is under development at the Photo Injector Test facility at DESY in Zeuthen (PITZ). Its improved cell geometry and cooling concept allow for RF pulse durations of up to 1 ms at 10 Hz repetition rate, at gradients of ~60 MV/m at the cathode. [...]

The PETRA IV storage ring currently under development at DESY will require a third harmonic 1.5 GHz RF-system to prevent negative effects on both, lifetime and emittance, caused by Touschek effect and Intrabeam scattering. These cavities lengthen the bunches and thereby reduce their charge density.For this 3rd harmonic system, a one-cell single-mode cavity with a simple mechanical and electrical structure is under design that should also reduce Higher Order Modes (HOMs) to a quality factor less than 100. [...]

This contribution describes a monolithic digital silicon photomultiplier (dSiPM), designed and characterized at DESY. It consists of an array of single photon avalanche diodes (SPADs) arranged in a 32 x 32-pixel matrix at 70 μm pitch, with embedded CMOS circuitry for on-chip signal processing. [...]

The Belle II experiment at the SuperKEKB $e^{+}e^{-}$ collider took data from 2019 to 2022 (Run 1) and is currently undergoing its planned first long shutdown (LS1). During its operational period, SuperKEKB achieved a record-breaking instantaneous luminosity of 4.7 x 10$^{34}$ cm$^{-2}$s$^{-1}$ [1] and Belle II recorded a dataset corresponding to 428 fb$^{-1}$.The Belle II Pixel Vertex Detector (PXD), which is the innermost sub-detector, is based on the DEpleted P-channel Field Effect Transistor (DEPFET) technology [2]. [...]

At the variable polarization XUV beamline P04 of PETRA III the first mirror is used to switch the beam between the two branches of the beamline. The heat load on this white beam mirror is dependent on the degree of polarization and the energy of the first harmonic of the synchrotron radiation. [...]

The manufacturing and assembly of the CTAO Medium-Sized Telescopes (MST) is a complex process thatinvolves a geographically dispersed engineering collaboration. This collaboration must integrate all stakeholders,provide effective decision-making procedures, and establish reliable and efficient material and information flow.One of the key challenges in mastering this process is the digitalisation of manufacturing planning, coordinationand progress tracking processes based on a Product Lifecycle Management (PLM) system. [...]

The comprehension of microhole formation during percussion drilling of metals using ultrashort laser pulses is still limited. The shape of a microhole can be impacted by factors like heat accumulation, the emergence of side channels, bending, and bulging. [...]

The SASE3 Variable Polarization project is intended to offer polarization control of the X-ray FEL pulses at the European XFEL. The project was completed in early 2022. [...]