Hubertus Bromberger

Laser Physicist

Center for Free-Electron Laser Science (CFEL)
Deutsches Elektronen-Synchrotron DESY
Notkestrasse 85 (building 99, room O3.004)
22607 Hamburg
Germany

CMI

hubertus.bromberger@cfel.de

+49-40-8998-6334

Research

With my extensive expertise in laser physics and a keen interest in technology-related subjects, I aim to facilitate and advance science through my research by combining my strong laser physics background with a focus on technology. My current area of interest is to facilitate molecular science experiments by utilizing cutting-edge detectors such as Timepix3 and 4, which enable multi-mass 3D ion and electron imaging.

Curriculum Vitae

Publications

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Position in scientific management

03 January 2025

Timepix3: single-pixel multi-hit energy-measurement behaviour

13 November 2024

The event-driven hybrid-pixel detector readout chip, Timepix3, has the ability to simultaneously measure the time of an event on the nanosecond timescale and the energy deposited in the sensor. However, the behaviour of the system when two events are recorded in quick succession of each other on the same pixel was not studied in detail previously. We present experimental measurements, circuit simulations, and an empirical model for the impact of a preceding event on this energy measurements, which can result in a loss as high as 70%. Accounting for this effect enables more precise compensation, particularly for phenomena like timewalk. This results in significant improvements in time resolution — in the best case, multiple tens of nanoseconds — when two events happen in rapid succession.

Recent Publications