Shot-by-shot 250 kHz 3D ion and MHz photoelectron imaging using Timepix3

We demonstrate the application of event-driven Timepix3-based detectors in combination with a double-sided velocity-map-imaging spectrometer to record the full 3D momentum of charged particles at the free-electron-laser facility FLASH. We measured the extreme ultraviolet induced fragmentation of N 2...

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Bibliographic Details
Published in:Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2022-07, Vol.55 (14), p.144001
Main Authors: Bromberger, Hubertus, Passow, Christopher, Pennicard, David, Boll, Rebecca, Correa, Jonathan, He, Lanhai, Johny, Melby, Papadopoulou, Christina C, Tul-Noor, Atia, Wiese, Joss, Trippel, Sebastian, Erk, Benjamin, Küpper, Jochen
Format: Article
Language:English
Subjects:
3D momentum
electron imaging
FLASH
time-of-flight
Timepix3
velocity-map-imaging
VMI
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Summary:We demonstrate the application of event-driven Timepix3-based detectors in combination with a double-sided velocity-map-imaging spectrometer to record the full 3D momentum of charged particles at the free-electron-laser facility FLASH. We measured the extreme ultraviolet induced fragmentation of N 2 using 250 kHz FLASH bursts with sub-pixel spatial resolution and up to 1.7 ns temporal resolution for photoelectrons. To further demonstrate the capabilities of this camera at even higher repetition rates we measured single-shot images of He(1 s ) photoelectrons for bursts with a repetition rate of 1 MHz. Overall, with the Timepix3 camera we overcome limitations of standard-camera technology for advanced-imaging experiments with requirements on high event-rates and high spatio-temporal resolution.
ISSN:0953-4075
1361-6455
DOI:10.1088/1361-6455/ac6b6b