Kai Lukas Unger, M.Sc.

Kai Lukas Unger, M.Sc.

  • Engesserstr. 5

    76131 Karlsruhe

Forschung

Low Latency Trigger

Moderne Teilchenbeschleunigerexperimente produzieren heutzutage immense Datenmengen die nicht gespeichert werden können. Deshalb werden die Daten durch Trigger Systeme in Echtzeit analysiert und nur die wirklich relevanten Daten gespeichert. Diese Analyse wird durch mehrstufige Trigger durchgeführt. Am ITIV werden, in enger Zusammenarbeit mit Experimental Physikern, neue Hardware Architekturen auf FPGA Basis für die Level 1 Trigger Stufe entwickelt. Dazu werden klassische Algorithmen, sowie auf Maschine Learning basierende Systeme implementiert und analysiert.

High throughput Data Acquisition

In Physik Großexperimenten fallen immense Datenmengen die übertragen werden müssen. Deshalb ist ein leistungsfähiges DAQ System extrem wichtige für einen erfolgreichen Verlauf des Experiments. Das ITIV entwickelt mit dem Campus Nord solche Systeme. Wir untersuchen dabei zukünftige FPGA Architekturen für die effiziente Verarbeitung und Weiterleitung der Experimentdaten.

Fast AI in High Energy Physics

Künstliche Intelligenz wird in der Hoch Energiephysik immer wichtiger. Die Maschinen Learning Algorithmen werden zurzeit meist in den Physik Rechenzentren eingesetzt. Dazu werden hauptsächlich GPU oder TPU basierte Server eingesetzt. Wir versuchen diese Algorithmen in FPGA Hardware zu implementieren um sie schneller ausfuhren zu können.

Lehre

Exercise for 2311608 Hardware Modeling and Simulation

Betreute studentische Arbeiten (Auswahl)

  • SA:“ Vergleich der Implementierungen des Track-Findings in den L1-Trigger-Systemen des ATLAS- und des CMS-Projekts“
  • BA: “Hardware/Software Co-Simulation of the Track Segment Finder for the Belle II Experiment “
  • BA: “Slow Control Monitoring for the Neural Network Trigger in the Belle II Experiment “

Publikationen


2025
Zeitschriftenaufsätze
ToASt: A 64-channel ASIC for the readout of the Silicon Strip Detectors of the PANDA experiment
Mazza, G.; Calvo, D.; Cossio, F.; De Remigis, P.; Lenta, F.; Mignone, M.; Wheadon, R.; Becker, J.; Brinkmann, K. T.; Caselle, M.; Kopmann, A.; Manzhura, O.; Peter, M.; Sidorenko, V.; Stanek, P.; Stockmanns, T.; Tomasek, L.; Troll, N.; Unger, K. L.; Zaunick, H. G.
2025. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1071, 170069. doi:10.1016/j.nima.2024.170069
2024
Zeitschriftenaufsätze
Characterization of the radiation tolerant ToASt ASIC for the readout of the PANDA MVD strip detector
Lenta, F.; Calvo, D.; Cossio, F.; Mazza, G.; Wheadon, R.; Becker, J.; Brinkmann, K.-T.; Caselle, M.; Kopmann, A.; Manzhura, O.; Mattiazzo, S.; Peter, M.; Sidorenko, V.; Staněk, P.; Stockmanns, T.; Tomášek, L.; Tröll, N.; Unger, K. L.; Zaunick, H.-G.
2024. Journal of Instrumentation, 19 (04), Art.-Nr.: C04047. doi:10.1088/1748-0221/19/04/C04047
The data acquisition system for the PANDA Micro-Vertex Detector
Manzhura, O.; Caselle, M.; Ardila-Perez, L. E.; Calvo, D.; Chilingaryan, S.; Cossio, F.; Dritschler, T.; Kopmann, A.; Lenta, F.; Mazza, G.; Peter, M.; Sidorenko, V.; Staněk, P.; Stockmanns, T.; Tomášek, L.; Tröll, N.; Unger, K. L.; Zaunick, H.-G.; Becker, J.; Brinkmann, K.-T.
2024. Journal of Instrumentation, 19 (03), Art.-Nr.: C03036. doi:10.1088/1748-0221/19/03/C03036
Real-Time Graph Building on FPGAs for Machine Learning Trigger Applications in Particle Physics
Neu, M.; Becker, J.; Dorwarth, P.; Ferber, T.; Reuter, L.; Stefkova, S.; Unger, K.
2024. Computing and Software for Big Science, 8 (1), Artl.Nr.: 8. doi:10.1007/s41781-024-00117-0
Proceedingsbeiträge
VHDL Crash Course: A Multimedia-Based Teaching Approach
Kreß, F.; Sidorenko, V.; Topko, I.; Unger, K.; Harbaum, T.; Becker, J.
2024. 2024 IEEE 3rd German Education Conference (GECon), Munich, Germany, 05-07 August 2024, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/GECon62014.2024.10734007
Audio & Video
[VHDL Crash Course] Testbenches - How to Test your VHDL model
Kreß, F.; Sidorenko, V.; Topko, I.; Unger, K.; Schneider, M.; Becker, J.
2024
[VHDL Crash Course] Concurrent Modeling - The Register-Transfer-Level Mindset
Kreß, F.; Sidorenko, V.; Topko, I.; Unger, K.; Schneider, M.; Becker, J.
2024
[VHDL Crash Course] Sequential Modeling - Introduction to If and Case Statements
Kreß, F.; Sidorenko, V.; Topko, I.; Unger, K.; Schneider, M.; Becker, J.
2024
[VHDL Crash Course] Processes in VHDL - How to model sequential Algorithms
Kreß, F.; Sidorenko, V.; Topko, I.; Unger, K.; Schneider, M.; Becker, J.
2024
[VHDL Crash Course] Avoiding Code Duplicates - VHDL Module Parameters and Architectures
Kreß, F.; Sidorenko, V.; Topko, I.; Unger, K.; Schneider, M.; Becker, J.
2024
[VHDL Crash Course] Bit Vectors and Numbers - Basic VHDL Types
Kreß, F.; Sidorenko, V.; Topko, I.; Unger, K.; Schneider, M.; Becker, J.
2024
[VHDL Crash Course] Entity and Architecture - Introduction to the basic VHDL structure
Kreß, F.; Sidorenko, V.; Topko, I.; Unger, K.; Schneider, M.; Becker, J.
2024
[VHDL Crash Course] HDLs in general - What are HDLs used for
Kreß, F.; Sidorenko, V.; Topko, I.; Unger, K.; Schneider, M.; Becker, J.
2024
[VHDL Crash Course] How to Learn with Videos - Introduction to Self-regulated Learning
Kreß, F.; Sidorenko, V.; Topko, I.; Unger, K.; Schneider, M.; Becker, J.
2024
2023
Buchaufsätze
A Convolution Neural Network Based Displaced Vertex Trigger for the Belle II Experiment
Unger, K.; Becker, J.; Kiesling, C.; Ma, Y.; Meggendorfer, F.; Neu, M.; Schmidt, E.; Zweigart, U.
2023. Applied Reconfigurable Computing. Architectures, Tools, and Applications – 19th International Symposium, ARC 2023, Cottbus, Germany, September 27–29, 2023, Proceedings. Ed.: F. Palumbo, 173–184, Springer Nature Switzerland. doi:10.1007/978-3-031-42921-7_12
Zeitschriftenaufsätze
Operation of the Neural z-Vertex Track Trigger for Belle II in 2021 - a Hardware Perspective
Unger, K. L.; Bähr, S.; Becker, J.; Knoll, A. C.; Kiesling, C.; Meggendorfer, F.; Skambraks, S.
2023. Journal of Physics: Conference Series, 2438, Article no: 012056. doi:10.1088/1742-6596/2438/1/012056
Data-driven design of the Belle II track segment finder
Unger, K. L.; Neu, M.; Becker, J.; Schmidt, E.; Kiesling, C.; Meggendorfer, F.; Skambraks, S.
2023. Journal of Instrumentation, 18 (2), Art.-Nr.: C02001. doi:10.1088/1748-0221/18/02/C02001
Proceedingsbeiträge
Design and Implementation of Staggered-SAR Azimuth-Processing
Marten, J. C.; Younis, M.; Krieger, G.; Pfau, J.; Unger, K.; Becker, J.
2023. 24th International Radar Symposium (IRS), Berlin, Germany, 24-26 May 2023, Institute of Electrical and Electronics Engineers (IEEE). doi:10.23919/IRS57608.2023.10172405
2022
Zeitschriftenaufsätze
The Event Timing Finder for the Central Drift Chamber Level-1 Trigger at the Belle II experiment
Sue, Y.; Hanwook, B.; Iijima, T.; Iwasaki, Y.; Koga, T.; Lai, Y.-T.; Nakazawa, H.; Unger, K. L.
2022. Journal of Physics: Conference Series, 2374, Art.-Nr.: 012103. doi:10.1088/1742-6596/2374/1/012103
Applications and Techniques for Fast Machine Learning in Science
Deiana, A. M.; Tran, N.; Agar, J.; Blott, M.; Di Guglielmo, G.; Duarte, J.; Harris, P.; Hauck, S.; Liu, M.; Neubauer, M. S.; Ngadiuba, J.; Ogrenci-Memik, S.; Pierini, M.; Aarrestad, T.; Bähr, S.; Becker, J.; Berthold, A.-S.; Bonventre, R. J.; Müller Bravo, T. E.; Unger, K. L.; u. a.
2022. Frontiers in Big Data, 5, Art.Nr. 787421. doi:10.3389/fdata.2022.787421
2021
Zeitschriftenaufsätze
Feasibility studies of conserved charge fluctuations in Au-Au collisions with CBM
CBM Collaboration; Samanta, S.; Bähr, S.; Balzer, M.; Becker, J.; Blank, T.; Caselle, M.; Sidorenko, V.; Trifonova, E.; Unger, K. L.; Weber, M.
2021. Nuclear physics <Amsterdam> / A, 1005, Art.-Nr.: 121896. doi:10.1016/j.nuclphysa.2020.121896
CBM Collaboration
CBM Collaboration; Ablyazimov, T.; Adak, R. P.; Adler, A.; Agarwal, A.; Agarwal, K.; Ahammed, Z.; Ahmad, A.; Ahmad, F.; Ahmad, N.; Akindinov, A.; Akishin, P.; Akishina, V.; Al-Turany, M.; Alekseev, I.; Alexandrov, E.; Alexandrov, I.; Andronic, A.; Appelshäuser, H.; Unger, K. L.; u. a.
2021. Nuclear physics <Amsterdam> / A, 1005, Article no: 122089. doi:10.1016/S0375-9474(20)30414-0
2020
Zeitschriftenaufsätze
Transverse and longitudinal segmented forward hadron calorimeters with SiPMs light readout for future fixed target heavy ion experiments
BM@N Collaboration; CBM Collaboration; NA61/SHINE Collaboration; Guber, F.; Finogeev, D.; Golubeva, M.; Ivashkin, A.; Izvestnyy, A.; Karpushkin, N.; Morozov, S.; Kugler, A.; Mikhaylov, V.; Senger, A.; Bähr, S.; Balzer, M.; Becker, J.; Blank, T.; Caselle, M.; Sidorenko, V.; Unger, K. L.; u. a.
2020. Nuclear instruments & methods in physics research / A, 958, Art.-Nr. 162728. doi:10.1016/j.nima.2019.162728
Status of the Compressed Baryonic Matter experiment at FAIR
CBM Collaboration; Senger, P.; Bähr, S.; Balzer, M.; Becker, J.; Blank, T.; Caselle, M.; Sidorenko, V.; Trifonova, E.; Unger, K. L.; Weber, M.
2020. International journal of modern physics / E, 29 (02), 2030001–1. doi:10.1142/S0218301320300015
Probing dense QCD matter in the laboratory—The CBM experiment at FAIR
CBM Collaboration; Senger, P.; Bähr, S.; Balzer, M.; Becker, J.; Blank, T.; Caselle, M.; Sidorenko, V.; Trifonova, E.; Unger, K. L.; Weber, M.
2020. Physica scripta, 95 (7), Art.-Nr.: 074003. doi:10.1088/1402-4896/ab8c14
Physics Performance Studies for Anisotropic Flow Measurements with the CBM Experiment at FAIR
CBM Collaboration; Golosov, O.; Klochkov, V.; Kashirin, E.; Selyuzhenkov, I.; Bähr, S.; Balzer, M.; Becker, J.; Blank, T.; Caselle, M.; Sidorenko, V.; Trifonova, E.; Unger, K. L.; Weber, M.
2020. Physics of particles and nuclei, 51 (3), 297–300. doi:10.1134/S1063779620030119
Using multiplicity of produced particles for centrality determination in heavy-ion collisions with the CBM experiment
CBM Collaboration; Segal, I.; Lubynets, O.; Selyuzhenkov, I.; Klochkov, V.; Bähr, S.; Balzer, M.; Becker, J.; Blank, T.; Caselle, M.; Sidorenko, V.; Trifonova, E.; Unger, K. L.; Weber, M.
2020. Journal of Physics: Conference Series, 1690, Art.-Nr.: 012107. doi:10.1088/1742-6596/1690/1/012107
Performance for proton anisotropic flow measurement of the CBM experiment at FAIR
CBM Collaboration; Golosov, O.; Klochkov, V.; Kashirin, E.; Selyuzhenkov, I.; Bähr, S.; Balzer, M.; Becker, J.; Blank, T.; Caselle, M.; Sidorenko, V.; Trifonova, E.; Unger, K. L.; Weber, M.
2020. Journal of Physics: Conference Series, 1690, Art.-Nr. 012104. doi:10.1088/1742-6596/1690/1/012104
Search for Axionlike Particles Produced in e⁺ e⁻ Collisions at Belle II
Belle 2 Collaboration; Abudinén, F.; Adachi, I.; Aihara, H.; Akopov, N.; Aloisio, A.; Ameli, F.; Anh Ky, N.; Asner, D. M.; Aushev, T.; Aushev, V.; Babu, V.; Baehr, S.; Bahinipati, S.; Bambade, P.; Banerjee, S.; Bansal, S.; Baudot, J.; Becker, J.; Unger, K.; u. a.
2020. Physical review letters, 125 (16), Article: 161806. doi:10.1103/PhysRevLett.125.161806
Development of the Level-1 track trigger with Central Drift Chamber detector in Belle II experiment and its performance in SuperKEKB 2019 Phase 3 operation
Belle 2 Collaboration; Lai, Y.-T.; Aoyama, M.; Bae, H.; Bähr, S.; Chang, M.-C.; Hayashii, H.; Iwasaki, Y.; Kim, J.-B.; Kim, K.-T.; Kiesling, C.; Koga, T.; Lu, P.-C.; Liu, S.-M.; Meggendorfer, F.; Moon, H.-K.; Moon, T.-J.; Nakazawa, H.; Rados, P.; Unger, K.; u. a.
2020. Journal of Instrumentation, 15 (6), Art. Nr.: C06063. doi:10.1088/1748-0221/15/06/C06063
Search for an Invisibly Decaying Z’ Boson at Belle II in e⁺e⁻ → μ⁺μ⁻(eμ) Plus Missing Energy Final States
Belle 2 Collaboration; Adachi, I.; Ahlburg, P.; Aihara, H.; Akopov, N.; Aloisio, A.; Anh Ky, N.; Asner, D. M.; Atmacan, H.; Aushev, T.; Aushev, V.; Aziz, T.; Babu, V.; Baehr, S.; Bambade, P.; Banerjee, S.; Bansal, V.; Barrett, M.; Baudot, J.; Unger, K.; u. a.
2020. Physical review letters, 124 (14), Article: 141801. doi:10.1103/PhysRevLett.124.141801
Measurement of the integrated luminosity of the Phase 2 data of the Belle II experiment
Belle 2 Collaboration; Abudinén, F.; Adachi, I.; Ahlburg, P.; Aihara, H.; Akopov, N.; Aloisio, A.; Ameli, F.; Andricek, L.; Anh Ky, N.; Asner, D. M.; Atmacan, H.; Aushev, T.; Aushev, V.; Aziz, T.; Azmi, K.; Babu, V.; Baehr, S.; Bahinipati, S.; Unger, K.; u. a.
2020. Chinese physics / C, 44 (2), Article: 021001. doi:10.1088/1674-1137/44/2/021001
Proceedingsbeiträge
Online Estimation of Particle Track Parameters based on Neural Networks for the Belle II Trigger System
Baehr, S.; Unger, K. L.; Becker, J.; Meggendorfer, F.; Skambraks, S.; Kiesling, C.
2020. Proceedings of Artificial Intelligence for Science, Industry and Society — PoS(AISIS2019), 010, Scuola Internazionale Superiore di Studi Avanzati (SISSA). doi:10.22323/1.372.0010
Realization of a state machine based detection for Track Segments in the Trigger System of the Belle II Experiment
Unger, K. L.; Bähr, S.; Becker, J.; Iwasaki, Y.; Kim, K.; Lai, Y.-T.
2020. Proceedings of Topical Workshop on Electronics for Particle Physics, TWEPP 2019, Santiago de Compostela, Spain, 2 - 6 September 2019, Code 160323. doi:10.22323/1.370.0145
2019
Zeitschriftenaufsätze
The very forward hadron calorimeter PSD for the future CBM@FAIR experiment
CBM Collaboration; Mikhaylov, V.; Kugler, A.; Kushpil, V.; Svoboda, O.; Tlustý, P.; Golubeva, M.; Guber, F.; Ivashkin, A.; Morozov, S.; Klochkov, V.; Selyuzhenkov, I.; Senger, A.; Bondarenko, S.; Burov, V.; Malakhov, A.; Bähr, S.; Balzer, M.; Becker, J.; Unger, K. L.; u. a.
2019. The European physical journal / Web of Conferences, 204, Art.-Nr.: 11004. doi:10.1051/epjconf/201920411004
The Projectile Spectator Detector for measuring the geometry of heavy ion collisions at the CBM experiment on FAIR
CBM Collaboration; Karpushkin, N.; Finogeev, D.; Golubeva, M.; Guber, F.; Ivashkin, A.; Izvestnyy, A.; Ladygin, V.; Morozov, S.; Kugler, A.; Mikhaylov, V.; Senger, A.; Bähr, S.; Balzer, M.; Becker, J.; Blank, T.; Caselle, M.; Sidorenko, V.; Trifonova, E.; Unger, K. L.; u. a.
2019. Nuclear instruments & methods in physics research / A, 936, 156–157. doi:10.1016/j.nima.2018.10.054
Exploring Cosmic Matter in the Laboratory—The Compressed Baryonic Matter Experiment at FAIR
CBM Collaboration; Senger, P.; Bähr, S.; Balzer, M.; Becker, J.; Blank, T.; Caselle, M.; Sidorenko, V.; Trifonova, E.; Unger, K. L.; Weber, M.
2019. Particles, 2 (4), 499–510. doi:10.3390/particles2040031
Proceedingsbeiträge
Low Latency Neural Networks using Heterogenous Resources on FPGA for the Belle II Trigger
Baehr, S.; Poehler, J.; Unger, K.; Hochstuhl, A.; Becker, J.; Skambraks, S.; McCarney, S.; Meggendorfer, F.; Kiesling, C.
2019. Connecting the Dots and Workshop on Intelligent Trackers (CTD/WIT 2019), València, E, April 2-5, 2019
Forschungsberichte/Preprints
Measurement of the integrated luminosity of the Phase 2 data of the Belle II experiment
Belle 2 Collaboration; Bähr, S.; Becker, J.; Unger, K.
2019
2018
Zeitschriftenaufsätze
Event Topology Reconstruction in the CBM Experiment
CBM Collaboration; Kisel, I.; Bähr, S.; Balzer, M.; Becker, J.; Blank, T.; Caselle, M.; Sidorenko, V.; Trifonova, E.; Unger, K. L.; Weber, M.
2018. Journal of Physics: Conference Series, 1070, 012015. doi:10.1088/1742-6596/1070/1/012015
Proceedingsbeiträge
Level-1 track trigger with Central Drift Chamber detector in Belle II experiment
Lai, Y.-T.; Baehr, S.; Chang, M. C.; Iwasaki, Y.; Kim, J. B.; Kim, K. T.; Kiesling, C.; Koga, T.; Lu, P. C.; Liu, S. M.; Meggendorfer, F.; Moon, H. K.; Moon, T. J.; Nakazawa, H.; Shiu, J. G.; Skambraks, S.; Sheng, T. Z.; Unger, K.; Wang, C. H.; Won, E.
2018. 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference / 25th International Symposium on Room-Temperature Semiconductor X-Ray and Gamma-Ray Detectors (IEEE NSS/MIC 2018), Sydney, AUS, November 10-17, 2018, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/NSSMIC.2018.8824506
2017
Zeitschriftenaufsätze
A precision device needs precise simulation: Software description of the CBM Silicon Tracking System
CBM Collaboration; Malygina, H.; Friese, V.; Bähr, S.; Balzer, M.; Becker, J.; Blank, T.; Caselle, M.; Sidorenko, V.; Trifonova, E.; Unger, K. L.; Weber, M.
2017. Journal of Physics: Conference Series, 898, Art.-Nr.: 042022. doi:10.1088/1742-6596/898/4/042022
The high-rate data challenge: computing for the CBM experiment
CBM Collaboration; Friese, V.; Bähr, S.; Balzer, M.; Becker, J.; Blank, T.; Caselle, M.; Sidorenko, V.; Trifonova, E.; Unger, K. L.; Weber, M.
2017. Journal of Physics: Conference Series, 898, Art.-Nr. 112003. doi:10.1088/1742-6596/898/11/112003