Karlsruhe School of Elementary Particle and Astroparticle Physics: Science and Technology (KSETA)

Kathrin Bismark

Karlsruhe Institute of Technology (KIT)
Institute for Astroparticle Physics (IAP)
Pierre Auger Observatory
Campus North, Bldg. 425
Hermann-von-Helmholtz-Platz 1
76344 Eggenstein-Leopoldshafen

Room: 101
Email: kathrin.bismark#kit.edu

Research Topic

Energy Scale of the Pierre Auger Observatory
Supervisor: Dr. Michael Unger
Referees: Prof. Dr. Ralph Engel
Starting date: September 2020

The project is divided into two parts: data analysis and calibration.
The first part aims to develop new and improved ways for determining the hybrid energy spectrum of cosmic rays. The hybrid spectrum combines the calorimetric measurements by the fluorescence detectors (FD) with the measurements by the surface detector (SD) of particle showers in the atmosphere induced by cosmic rays. Due to high statistics, most event selection criteria and environmental influences on detection capabilities and reconstruction parameters can now be investigated using measured data and not just simulated ones; This enables improved possibilities for determining the energy spectrum.
The second part aims to determine the absolute calibration of the telescopes of the FD. This will be achieved by a measurement of the light collection efficiency and the point-spread function of the telescopes. These topics will be addressed by illuminating the telescope optics with a Lambertian and directed light source.


Type Title Supervisor
Master's thesis Winkelverteilung von Photonpaaren mit hohem Transversalimpuls
in unpolarisierten hadronischen Kollisionen
(Angular distribution of photon pairs with high transverse momentum
in unpolarized hadronic collisions)
Prof. Dr. Werner Vogelsang
(pQCD - Tübingen)
Bachelor's thesis Paarproduktion von Pionen in der Myon-Proton-Streuung
(Pair production of pions in muon-proton scattering)
Prof. Dr. Werner Vogelsang
(pQCD - Tübingen)

Academic Service

Date Description
March 2022 - March 2023 Main PhD student representative at KSETA
Summer semester 2021
and 2022
Tutor for the lecture ,Moderne Experimentalphysik III (Teilchen und Hadronen)'
(Modern Experimental Physics III (Particles and Hadrons))
Oct. and Nov. 2021 (Re)presentation of the Auger group and its research for pupils at the ,BOGY-Praktikum' (pupil internship)
April 2021 (Re)presentation of the Auger group and its research for pupils at the Girls Day
Since 2021 Co-organizer of the IAP journal club
March 2021 Data taking with Fluorescence Detectors of the Pierre Auger Observatory
(Responsibility for telescope operations)

Conferences, Talks, Workshops & Summer Schools

Date Description
June 2023 3rd GCOS workshop
June 2023 Pierre Auger Collaboration Meeting
Talk: Towards an update of the hybrid energy spectrum
March 2023 KSETA Plenary Workshop
Poster: Improved determination of the Hybrid Energy Spectrum
March 2023 DPG Spring Meeting SMuK23
Talk: Determination of the Energy Spectrum of UHECRs using Air Showers
detected by the Fluorescence and Surface Detector of the Pierre Auger Observatory
February/March 2023 KSETA PhD Workshop
October 2022 School for Astroparticle Physics in Obertrubach-Bärnfels
Talk: Determination of the Energy Spectrum of UHECRs
with the Fluorescence Detector of the Pierre Auger Observatory
September 2022 Auger Youngsters Meeting
March 2022 Virtual DPG Spring Meeting of the Matter and Cosmos Section (SMuK)
Talk: Measurement of the Energy Spectrum of UHECRs with the Fluorescence Detector
of the Pierre Auger Observatory
March 2022 Pierre Auger Collaboration Meeting
March 2022 KSETA Plenary Workshop
February/March 2022 Workshop zur Vermittlung der Physik der kleinsten Teilchen
January 2022 Workshop UHECR Snowmass White Paper part 2
November 2021 HIRSAP Workshop
Talk: Hybrid Spectrum Studies: Fiducial Distance
September 2021 KSETA Plenary Workshop
September 2021 KSETA PhD Workshop
July 2021 International Cosmic Ray Conference (ICRC)
June 2021 Pierre Auger Collaboration Meeting
May 2021 Global Cosmic Ray Observatory (GCOS) workshop
March 2021 Pierre Auger Collaboration Meeting
November 2020 Pierre Auger Collaboration Meeting
October 2019 Kepler Center PhD Workshop ,Particles, Fields and Messengers of the Universe’
organized by Eberhard Karls Universität Tübingen


Date Description Organizer
16-17 March 2023 Chip design course KSETA
8-9 March 2023 Multi-Messenger Data Analysis KSETA
7-8 March 2023 Superconducting Quantum Technology KSETA
17, 21 October 2022 Projectmanagement KSETA
7-9 September 2022 Fitting data with the likelihood method Auger
16, 24 February 2022 Statistical methods in particle physics data analysis 2022 KSETA
15, 17 February 2022 Introduction to general relativity for experimentalists KSETA
14 February 2022 Monte Carlo simulations KSETA
7-10 December 2021 Cosmic Rays of the Highest Energies KSETA
14 October 2021 Neutrino mass phenomenology KSETA
11, 13 October 2021 Broad introduction into modern experimental particle physics KSETA
6 October 2021 Baryogenesis KSETA
22-23 July 2021 Scientific Writing ICRC2021
March - May 2021 Statistical methods for research in Natural Sciences KHYS
8-9 March 2021 Introduction to astroparticle physics KSETA
3-10 March 2021 Statistical methods in particle physics data analysis KSETA
12 March 2021 Observational Cosmology KSETA
28-29 October 2020 Introduction to Machine Learning and Deep Learning KSETA
7-8 October 2020 Neutrino physics KSETA
1-2 October 2020 Interpretations of quantum mechanics KSETA

Annual KSETA reports

January 2022 - December 2022
September 2020 - December 2021