Faculties of University Bonn: Search
Now showing items 711-720 of 748
Measuring Excitations of a Strongly Interacting Superfluid Fermi Gas
(2022-11-24)
This thesis investigates experimentally the superfluid phase of strongly interacting ultracold Fermi gases. The diluteness of the considered gases of neutral atoms ensures that their interaction can be described by a single ...
Gain Calibration of the Upgraded ALICE TPC
(2022-11-24)
For the upcoming Run 3 of the LHC at CERN, the interaction rate of lead-lead collisions will be increased to 50kHz . Especially for the main detector of the ALICE experiment, the TPC, this is a major challenge, as its ...
Fluctuation-Dissipation Relation for a Bose-Einstein Condensate of Photons
(2023-01-20)
For equilibrium systems, the magnitude of thermal fluctuations is closely linked to the dissipative response to external perturbations. This fluctuation-dissipation relation has been described for material particles in a ...
Spectroscopic Gas Sensor Based on a Fiber Fabry-Perot Cavity
(2022-10-17)
Optical spectroscopic sensors are powerful tools for analyzing gas mixtures in industrial and scientific applications. Whilst highly sensitive spectrometers tend to have a large footprint, miniaturized optical devices ...
C and CP Violation in Light-Meson Decays
(2023-11-29)
This dissertation delves into the systematic parameterization of a simultaneous violation of C and CP in the light-meson sector, i.e., a source of CP violation that has been mostly disregarded over the past six decades. ...
On the Numerical Computation of Modular Forms
(2023-12-12)
This thesis presents a fast method for the numerical computation of modular forms. Our method significantly improves the performance of previous methods by using mixed-precision iterative solving techniques to reduce the ...
Adding New Functionalities to Optical Fiber Cavities by Direct Laser Writing
(2023-12-12)
Fiber Fabry–Pérot cavities (FFPCs) are fiber-based optical cavities, which find widespread applications, for example, in cavity quantum electrodynamics, spectroscopy, sensing, metrology, and in many more fields. They provide ...
Development of a Laboratory Readout System for DEPFET Pixel Detector Modules and Investigation of Radiation Backgrounds at the SuperKEKB Accelerator
(2023-01-23)
With the upgrade from the e^+ e^- -collider KEKB to SuperKEKB, a 40-fold increase in instantaneous luminosity is targeted posing new challenges for the Belle II detector. Particularly the innermost detector layers, consisting ...
Hybrid Pixel Readout Chip Verification, Characterization and Wafer Level Testing for the ATLAS-ITK Upgrade at the HL-LHC
(2023-07-04)
The HL-LHC upgrade starting in 2026 will provide an opportunity for new high-energy physics experiments, but also present challenges for its tracking detectors, particularly the pixel detectors close to the interaction ...
Searching for the Ashes of Dead Stars
(2023-08-08)
Hydrogen, helium, and trace amounts of lithium were formed during the Big Bang, but most other elements originally formed deep inside stars by the process of nuclear fusion. They were later scattered across the cosmos, ...