Cornelius Vollbrecht M.Sc.
Cornelius Vollbrecht M.Sc.
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Work - The OSIRIS detector
I am working on both hardware and software topics around the OSIRIS detector, a subdetector of the JUNO experiment. The main goal of OSIRIS is to evaluate the radiopurity of the JUNO liquid scintillator during the months-long filling phase of JUNO. Furthermore, OSIRIS will be used to detect air leaks and malfunctions in the liquid scintillator purification process.Between 09/2019 and 01/2020, I have supported the Aachen hardware group with the production of the intelligent PMT system. During that time, I worked on the following topics:
- Development and construction of a cleaning facility for OSIRIS parts from Germany
- Design and simulation of holding structures for the iPMT system
- Potting / glueing support for the iPMT system
- Support of the iPMT production in 2021
- Development of OSIRIS calibration and device control software
- Simulation and analysis of OSIRIS data
- Preparations for the OSIRIS commissioning phase in autumn 2022
My travel was supported by the DAAD (Deutscher Akademischer Austauschdienst), which approved a PhD research scholarship for the time in China. For more information, please have a look at Awards.
Outreach
- Foschungszentum Jülich: Tag der Neugier 2022
Neutrinos - Rätselhafte Geisterteilchen - RWTH Aachen: Tag der Physik 2021
JUNO & OSIRIS (for both Aachen and Jülich workgroups)
Awards
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PhD research scholarship for stays abroad with 3.5 months duration, granted by Deutscher Akademischer Austauschdienst (DAAD)
Selected events
- The 22nd JUNO collaboration meeting (Jiangmen, China / virtual, 2023)
Parallel talk: Status update on OSIRIS calibration systems
- DPG Spring Meeting (Dresden, March 2023)
Parallel talk: Calibration of the JUNO pre-detector OSIRIS
- The 21st JUNO collaboration meeting (Jiangmen, China / virtual, 2023)
Parallel talk: Mechanical integration of JUNO LPMTs into OSIRIS
- German JUNO Research Unit meeting (Mainz, Germany, 2022)
Talk: Status of the OSIRIS LPMT integration
- The 20th JUNO collaboration meeting (Virtual, China, 2022)
Parallel talk: Update on ACU calibration
- Low Radioactivity Techniques Conference LRT 2022 (Rapid City, South Dakota, United States, 2022)
Talk: OSIRIS: The Online Scintillator Internal Radioactivity Investigation System of JUNO
- The International Conference on Neutrino Physics and Astrophysics (Virtual, Republic of Korea, 2022)
Poster: OSIRIS: The Online Scintillator Internal Radioactivity Investigation System of JUNO
- JUNO DFG meeting (Jülich, Germany, 2020)
Parallel talk: OSIRIS calibration
- DPG Spring Meeting (Virtual / Heidelberg, Germany, 2022)
Parallel talk: Calibration of the JUNO pre-detector OSIRIS
- The 19th JUNO collaboration meeting (Virtual, 2022)
Parallel talk: OSIRIS cleaning report
- JUNO European Meeting (Aachen, 2021)
Parallel talk: Status update iPMT production & cleaning
- European Physics Society Conference on High Energy Physics EPS-HEP (Virtual / Hamburg, Germany, 2021)
Poster: OSIRIS – An online scintillator radiopurity monitor for the JUNO experiment
- The 18th JUNO collaboration meeting (Virtual, China, 2021)
Parallel talk: Cleaning for OSIRIS
- JUNO European Meeting (Virtual, 2021)
Parallel talk: Waveform reconstruction with the iPMT system of OSIRIS
- DPG Spring Meeting (Virtual / Dortmund, Germany, 2021)
Parallel talk: Cleaning for OSIRIS - Introduction to a cleaning facility on ultra pure water basis
- The 17th JUNO collaboration meeting (Virtual, China, 2021)
Parallel talk: Cleaning for OSIRIS - Status update on cleaning preparations in Aachen
- JUNO DFG meeting (Jülich, Germany, 2020)
Parallel talk: Cleaning for OSIRIS - Status update on cleaning preparations in Aachen
- The 16th JUNO collaboration meeting (Virtual, China, 2020)
Parallel talk: Cleaning of components in Aachen
- The 15th JUNO collaboration meeting (Nanning, China, 2020)
Parallel talk: Update iPMT-mechanics review
Selected Publications
- A. Abusleme et al. , Radioactivity control strategy for the JUNO detector, Journal of High Energy Physics, 2021, 102
- A. Abusleme et al., JUNO sensitivity to low energy atmospheric neutrino spectra, Eur. Phys. J. C 81(10), 2021, 887
- L. Bieger et al. , Potential for a precision measurement of solar pp neutrinos in the Serappis Experiment, arXiv:2109.10782
- A. Abusleme et al., JUNO physics and detector, Progr. Part. Nucl. Ph. 123, 2022, 103927.
- A. Abusleme et al., The Design and Sensitivity of JUNO's scintillator radiopurity pre-detector OSIRIS, Eur. Phys. J. C 81(11), 973.
- J. Wang et al., Damping signatures at JUNO, a medium-baseline reactor neutrino oscillation experiment, J. High En. Phys. 62, 2022, 82.
- A. Abusleme et al., Prospects for Detecting the Diffuse Supernova Neutrino Background with JUNO, J. Cosm. Astrop. Phys. 1, 2022, 033.
- A. Abusleme et al., Sub-percent Precision Measurement of Neutrino Oscillation Parameters with JUNO, Chin. Phys. C 46, 2022, 123001.
Education
- M.Sc. in Physics (RWTH Aachen University) -- Verifikation der akustischen Positionierung der Autonomen Pinger-Einheiten des EnEx-RANGE-Projektes in Gletschereis
- B.Sc. in Physics (RWTH Aachen University) -- Zur Bestimmung der akustischen Dämpfung von Ultraschall in Wasser im Frequenzbereich 100 − 800 kHz für die Vorfelderkundung des EnEx-RANGE-Projektes