2014

CFEL Molecular Physics Seminars 2014

16.01.2014 10:00h

Ionization of naphthalene molecules with strong femtosecond laser pulses: Information from photoelectron angular distributions in the molecular frame and the laboratory frame

Speaker: Henrik Stapelfeldt (Aarhus University, Denmark)

Location: DESY Hamburg - Room: seminar room I and II (EG.076/078)

Abstract

23.01.2014 10:00h

Structural chemistry and rotational spectroscopy: what's new?

Speaker: Alberto Lesarri (Faculdad de Ciencias, Universidad de Valladolid, Spain)

Location: DESY Hamburg - Room: Seminar Room I+II (EG)

Abstract

20.02.2014 10:00h

High intensity and ultra-cold supersonic beams sources

Speaker: Uzi Even (Tel Aviv University, Israel)

Location: DESY Hamburg - Room: seminar room I and II (EG.076/078)

Abstract

05.03.2014 10:00h

A Study of Infrared Upconversion in RF-Magnetron Sputtered Erbium-doped ZnO Thin Films

Speaker: Kristian Sigvardt (Aarhus University, Denmark)

Location: DESY Hamburg - Room: SR4

09.04.2014 11:30h

Investigation of the solvation dynamics of ferulic acid by femto-second time-resolved Kerr-gating fluorescence spectroscopy

Speaker: Joss Wiese (Universität Kiel)

Location: DESY Hamburg - Room: CFEL seminar room 3 (ground floor)

09.04.2014 11:30h

Simulations and Experiments toward the Polarization Measurement of Laser Accelerated Ions

Speaker: Mohammad Hessan (Forschungszentrum Jülich and RWTH)

Location: DESY Hamburg - Room: CFEL seminar room 3 (ground floor)

17.04.2014 10:00h

Scientific Publishing - a cornerstone of academic success

Speaker: Guido Fuchs (University Kassel, Germany)

Location: DESY Hamburg - Room: seminar room I and II (EG.076/078)

Abstract

30.04.2014 10:30h

Absolute measurements of ultra-low densities of radical species using cavity-enhanced laser-induced fluorescence

Speaker: Eckart Wrede (Durham University, U.K.)

Location: DESY Hamburg - Room: seminar room I and II (EG.076/078)

Abstract

12.06.2014 10:00h

Probing intermolecular interactions using VCD spectroscopy: From noble gas matrices to asymmetric catalysis

Speaker: Christian Merten (Universität Bochum, Germany)

Location: DESY Hamburg - Room: Seminar Room I and II (EG)

Abstract

26.06.2014 10:00h

Chiral recognition in spectroscopy and photophysics of weakly-bound complexes in the gas phase

Speaker: Anne Zehnacker (CNRS, Institut des sciences moléculaires d'Orsay, Université de Paris-Sud, Orsay, France)

Location: DESY Hamburg - Room: Seminar Room I & II (EG)

Abstract

03.07.2014 10:00h

Femtochemistry–some theoretical studies

Speaker: Niels Engholm Henriksen (Technical University of Denmark)

Location: DESY Hamburg - Room: CFEL 99/SR 1+2

Abstract

10.09.2014 10:00h

Boosting the difference between left and right: Amplified vibrational circular dichroism

Speaker: Sérgio Domingos (Universiteit van Amsterdam, The Netherlands)

Location: DESY Hamburg - Room: Seminar Room I (EG)

Abstract

10.09.2014 10:00h

Valence-shell Photoelectron Circular Dichroism (PECD) On Isolated Chiral Systems

Speaker: Maurice Tia

Location: DESY Hamburg

Abstract

10.09.2014 10:45h

Recombination in Low Temperature Plasma Environment

Speaker: Peter Rubovic

Location: DESY Hamburg

Abstract

25.09.2014 10:00h

2D-detectors for Photo Ionization Studies of Atoms, Molecules and Clusters at Elettra

Speaker: Michele DiFraia (University of Trieste)

Location: DESY Hamburg - Room: seminar room I+II (ground floor)

Abstract

30.10.2014 10:00h

Observation of pure electron dynamics in biomolecules induced by attosecond pulses

Speaker: Francesca Calegari (Politecnico Milano)

Location: DESY Hamburg - Room: CFEL 99/SR I+II

Abstract

18.11.2014 11:00h

Selektive multiphotonische Anregung von Fluorophoren mit phasen- und polarisationsgeformten Laserpulsen

Speaker: Georg Achazi

Location: DESY Hamburg - Room: 25f/204

20.11.2014 10:00h

Attosecond charge migration and its laser control

Speaker: Hans Jakob Wörner (ETH Zürich)

Location: DESY Hamburg - Room: seminar room I+II (ground floor)

Abstract

04.12.2014 10:00h

Studying dynamic processes in chiral solutions by quantum cascade laser-based vibrational circular dichroism

Speaker: Steffen Lüdeke (Universität Freiburg)

Location: DESY Hamburg - Room: Seminar Rooms I+II (EG)

Abstract

11.12.2014 10:00h

Precision spectroscopic measurements and tests of fundamental physics with molecules

Speaker: Benoit Darquie (Laboratoire de Physique des Lasers, CNRS, Université Paris 13, France)

Location: DESY Hamburg - Room: Seminar Room I+II (EG)

Abstract

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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.

Keynote lecture at Sino-German Physics Conference

20 October 2024

Jochen presented a keynote lecture on CMI research at the 33rd Annual Meeting of the Chinese Society of Physicists in Germany (GCPD) in Jinan, Shadong, China. The lecture was well attained locally and, according to the organizers, followed by more than 10,000 people in the koushare online stream.

Recent Publications