Contributions to a conference proceedings

This work investigates the use of SIMD for the computation of three-body interactions in molecular dynamics. Our main focus are non-additive potentials in the form of the Axilrod-Teller-Muto (ATM). [...]

At the Photo Injector Test facility at DESY in Zeuthen (PITZ) 22 MeV, high brightness electron beams are generated to serve mainly as a test facility for the European XFEL. Low emittance beams with bunch charges of less than a pC up to several nC are generated in an L-band photogun, which can provide bunch trains (4.5 MHz bunch repetition rate) of up to 1 ms in length at 10 Hz repetition rate. [...]

We present the first observation of single top quark production in association with a W and a Z boson in proton-proton collisions using 13 and 13.6 TeV data recorded with the CMS detector corresponding to integrated luminosities of 138 and 61.9 fb$^{-1}$, respectively. Events are selected if they contain three or four charged leptons, which can be electrons or muons. [...]

The study of vector boson production in association with jets (V+jets, where V = W, Z, γ) is a crucial component of the LHC physics program. These processes serve both as stringent tests of perturbative Quantum Chromodynamics (pQCD) and as important backgrounds in searches for new physics and precision measurements, including Higgs boson studies and top quark analyses. [...]

The Radio Neutrino Observatory-Greenland (RNO-G, at Summit Station) experiment comprises an extensive fat-dipole antenna array deployed into ice boreholes over an eventual area of approximately 35 km2. Since the RNO-G experimental sensitivity depends on the radio-frequency properties of the firn, which are known to vary laterally on sub-km distance scales and vertically on sub-meter distance scales, a technique for quickly extracting information on firn ice properties with depth (𝑛⁡(𝑧)) during drilling and deployment is desirable. [...]

Neural network surrogates have been shown to decrease computational costs of simulations, but often at the risk of unreliable predictions. This work integrates and evaluates multiple epistemic uncertainty quantification methods for a reproduced convolutional autoencoder–recurrent neural network surrogate architecture for molecular data in a coupled spatiotemporal molecular-continuum flow prediction. [...]

We demonstrate a dual-color 1.55/1.03 μm all-fiber femtosecond laser exhibiting sub-femtosecond relative timing jitter. The 1.03 μm channel is generated via resonant dispersive-wave emission in a short segment of highly nonlinear fiber pumped by a sub-30-fs, 1.5-μm laser. [...]

The increasing integration of high-performance computing (HPC) resources into data-intensive scientific workflows places new demands on storage systems traditionally developed for grid and distributed computing environments. dCache, a mature, exascale storage system jointly developed by Deutsches Elektronen-Synchrotron (DESY), Fermi National Accelerator Laboratory (FNAL), and the Nordic e-Infrastructure Collaboration (NeIC), has evolved to support a broad range of scientific communities beyond its origins in High-Energy Physics, including astrophysics, Photon science, and AI training. [...]

Accelerator-based THz sources offer high energy and repetition rates, making them attractive for pump-probe experiments at X-ray free-electron lasers. The superradiant terahertz radiation generation (STERN) experimental chamber was recently successfully integrated into the European XFEL electron beamline during its long installation and maintenance period. [...]

In the past two decades, radio-frequency (RF) controls have improved by two orders of magnitude achieving meanwhile sub-10 fs phase stabilities and 0.01 % amplitude precision. Analog-to-digital-converters (ADCs) are the main limitation for further increase in detector resolution. [...]