Alexandr Ignatenko

TEMPUS, a Timepix4-based system for event-based X-rays detection

A readout system based on the Timepix4 ASIC, is being developed for photon science. The TEMPUS detector can be operated in two distinct modes: a photon counting mode, which allows for conventional full-frame readout at rates up to 40 kfps;…

Instrumentation and Detectors · Physics 2024-11-20 Jonathan Correa , Alexandr Ignatenko , David Pennicard , Sabine Lange , Sergei Fridman , Sebastian Karl , Leon Lohse , Bjoern Senfftleben , Ilya Sergeev , Sven Velten , Deepak Prajapat , Lars Bocklage , Hubertus Bromberger , Andrey Samartsev , Aleksandr Chumakov , Rudolf Rueffer , Joachim von Zanthier , Ralf Roehlsberger , Heinz Graafsma

Revealing the impact of polystyrene-functionalization of Au octahedral nanocrystals of different sizes on formation and structure of mesocrystals

The self-assembly of anisotropic nanocrystals (stabilized by organic capping molecules) with pre-selected composition, size, and shape allows for the creation of nanostructured materials with unique structures and features. For such a…

Materials Science · Physics 2023-06-27 Dmitry Lapkin , Shweta Singh , Felizitas Kirner , Sebastian Sturm , Dameli Assalauova , Alexandr Ignatenko , Thomas Wiek , Thomas Gemming , Axel Lubk , Knut Müller-Caspary , Azat Khadiev , Dmitri Novikov , Elena V. Sturm , Ivan A. Vartanyants

Classification of diffraction patterns using a convolutional neural network in single particle imaging experiments performed at X-ray free-electron lasers

Single particle imaging (SPI) at X-ray free electron lasers (XFELs) is particularly well suited to determine the 3D structure of particles in their native environment. For a successful reconstruction, diffraction patterns originating from a…

Data Analysis, Statistics and Probability · Physics 2021-12-17 Dameli Assalauova , Alexandr Ignatenko , Fabian Isensee , Sergey Bobkov , Darya Trofimova , Ivan A. Vartanyants

High spatial coherence and short pulse duration revealed by the Hanbury Brown and Twiss interferometry at the European XFEL

Second-order intensity interferometry was employed to study the spatial and temporal properties of the European X-ray Free-Electron Laser (EuXFEL). Measurements were performed at the soft X-ray SASE3 undulator beamline at a photon energy of…

Optics · Physics 2021-04-23 Ruslan Khubbutdinov , Natalia Gerasimova , Giuseppe Mercurio , Dameli Assalauova , Jerome Carnis , Luca Gelisio , Loïc le Guyader , Alexandr Ignatenko , Young Yong Kim , Benjamin van Kuiken , Ruslan P. Kurta , Dmitry Lapkin , Martin Teichmann , Alexander Yaroslavtsev , Oleg Gorobtsov , Aleksey P. Menushenkov , Matthias Scholz , Andreas Scherz , Ivan A. Vartanyants

Classification of diffraction patterns in single particle imaging experiments performed at X-ray free-electron lasers using a convolutional neural network

Single particle imaging (SPI) is a promising method for native structure determination which has undergone a fast progress with the development of X-ray Free-Electron Lasers. Large amounts of data are collected during SPI experiments,…

Image and Video Processing · Electrical Eng. & Systems 2021-04-23 Alexandr Ignatenko , Dameli Assalauova , Sergey A. Bobkov , Luca Gelisio , Anton B. Teslyuk , Viacheslav A. Ilyin , Ivan A. Vartanyants

Structure-transport correlation reveals anisotropic charge transport in coupled PbS nanocrystal superlattices

Semiconductive nanocrystals (NCs) can be self-assembled into ordered superlattices (SLs) to create artificial solids with emerging collective properties. Computational studies have predicted that properties such as electronic coupling or…

Materials Science · Physics 2020-03-09 Andre Maier , Dmitry Lapkin , Nastasia Mukharamova , Philipp Frech , Dameli Assalauova , Alexandr Ignatenko , Ruslan Khubbutdinov , Sergey Lazarev , Michael Sprung , Florian Laible , Ronny Loeffler , Nicolas Previdi , Thomas Guenkel , Monika Fleischer , Frank Schreiber , Ivan A. Vartanyants , Marcus Scheele

Forward Instrumentation for ILC Detectors

Two special calorimeters are foreseen for the instrumentation of the very forward region of the ILC detector, a luminometer designed to measure the rate of low angle Bhabha scattering events with a precision better than 10-3 and a low polar…

Instrumentation and Detectors · Physics 2010-12-13 Halina Abramowicz , Angel Abusleme , Konstantin Afanaciev , Jonathan Aguilar , Prasoon Ambalathankandy , Philip Bambade , Matthias Bergholz , Ivanka Bozovic-Jelisavcic , Elena Castro , Georgy Chelkov , Cornelia Coca , Witold Daniluk , Angelo Dragone , Laurentiu Dumitru , Konrad Elsener , Igor Emeliantchik , Tomasz Fiutowski , Mikhail Gostkin , Christian Grah , Grzegorz Grzelak , Gunter Haller , Hans Henschel , Alexandr Ignatenko , Marek Idzik , Kazutoshi Ito , Tatjana Jovin , Eryk Kielar , Jerzy Kotula , Zinovi Krumstein , Szymon Kulis , Wolfgang Lange , Wolfgang Lohmann , Aharon Levy , Arkadiusz Moszczynski , Uriel Nauenberg , Olga Novgorodova , Marin Ohlerich , Marius Orlandea , Gleb Oleinik , Krzysztof Oliwa , Alexander Olshevski , Mila Pandurovic , Bogdan Pawlik , Dominik Przyborowski , Yutaro Sato , Iftach Sadeh , Andre Sailer , Ringo Schmidt , Bruce Schumm , Sergey Schuwalow , Ivan Smiljanic , Krzysztof Swientek , Yosuke Takubo , Eliza Teodorescu , Wojciech Wierba , Hitoshi Yamamoto , Leszek Zawiejski , Jinlong Zhang