# Abstracts

 2022-12-1514:26 [PUBDB-2022-07683] Abstract Schaper, L. ; Beye, M. ; Hartl, I. ; et al A bright future for new innovative and excellent opportunities for science at FLASH 14th International Particle Accelerator Conference, IPAC'23, VeniceVenice, Italy, 7 May 2023 - 12 May 2023   The FLASH2020+ project will open up new excellent opportunities for science on the highest level. The FLASH facility will not only produce soft x-ray SASE photon beams at full MHz repetition rate in a burst mode in FLASH2, but will also provide in FLASH1 several thousand fully coherent pulses per second using the HGHG and EEHG external seeding schemes. [...] 2022-12-1316:33 [PUBDB-2022-07585] Abstract Grech, C. ; Jafarinia, F. ; Geloni, G. ; et al Virtual Photon Pulse Characterisation Using Machine Learning Methods 14th International Particle Accelerator Conference, IPAC'23, VeniceVenice, Italy, 7 May 2023 - 12 May 2023   The use of fast computational tools is important in the operation of X-ray free electron lasers, in order to predict the output of diagnostics when they are either destructive or unavailable. Physics-based simulations can be computationally intensive to provide estimates on a real-time basis. [...] 2022-12-0710:38 [PUBDB-2022-07378] Abstract Ghanbari, R. ; Wenskat, M. ; Deyu, G. K. ; et al Surface Characterization of Mid-T Treated Nb Samples to Investigate the Origin of Residual Resistance 14th International Particle Accelerator Conference, IPAC'23, VeniceVenice, Italy, 7 May 2023 - 12 May 2023   Annealing of niobium (Nb) cavities in UHV is crucial for the performance in the later cryogenic tests and operation. Recently, a so-called “mid-T bake” treatment has exhibited very high-quality factors for Nb cavities. [...] 2022-12-0217:17 [PUBDB-2022-07288] Abstract Fogel, V. ; Bellandi, A. ; Bousonville, M. ; et al Optimization of Klystron Drive Signal and HV Shape to Reduce Energy Consumption during Operation of the European XFEL 14th International Particle Accelerator Conference, IPAC'23, VeniceVenice, Italy, 7 May 2023 - 12 May 2023   Currently 26 RF stations are in operation at the European X-ray Free Electron Laser (XFEL) and all RF stations can deliver sufficient power to support 600 µs beam pulse with an energy up to 17 GeV. These beam parameters require a power consumption of about 4.9 MW for high-power RF. [...] 2022-11-1610:11 [PUBDB-2022-06737] Abstract Rossi, G. M. ; Mainz, R. E. ; Scheiba, F. ; et al Tunable isolated attosecond pulse generation by sub-cycle synthesized waveforms European Conference on the Dynamics of Molecular Systems, MOLEC 2022, HamburgHamburg, Germany, 21 Aug 2022 - 26 Aug 2022   The future development of attosecond science will largely depend on the availability of better attosecond pulsesources. In particular, the current generation of laser-based attosecond sources suffers from a low photon-flux,especially in the soft X-ray region, and a limited tunability of attosecond pulse parameters, such as its centralenergy, bandwidth and consequently pulse duration, from a single source. [...] 2022-09-1517:33 [PUBDB-2022-04795] Abstract Sulc, A. ; Kammering, R. ; Wilksen, T. Status of Data-Driven Beam Trajectory Anomaly Detection at European XFEL 3rd ICFA Beam Dynamics Mini-Workshop on Machine Learning Applications for Particle Accelerators, ChicagoChicago, USA, 1 Nov 2022 - 4 Nov 2022   An accurate assessment of beam orbits is a reliable characteristic of operations at SASE beamlines at European XFEL. The current availability of hardware for data-driven models like GPUs enabled to deploy models which are capable of handling enormous throughput of data provide tools for more sophisticated analysis of current operations with state-of-the-art machine learning models. [...] 2022-07-0114:36 [PUBDB-2022-03237] Abstract Büchler, M. ; Hoffmann, M. ; Gümüs, C. ; et al Controller Latency Improvements at REGAE Low Level RF Workshop 2022, WindischWindisch, Switzerland, 9 Oct 2022 - 13 Oct 2022   REGAE is a facility for ultrafast electron diffraction (UED) experiments based on a normal conducting S-band gun and buncher cavity. Their RF regulation is performed by a single cavity controller, implemented by an FPGA firmware and operating at 125 MHz. [...] External link: Fulltext 2022-05-0720:59 [PUBDB-2022-02515] Abstract Sulc, A. ; Branlard, J. ; Eichler, A. ; et al Machine Learning for Detection of Anomalies on Klystrons at the European XFEL 31st Linear Accelerator Conference, LINAC2022, LiverpoolLiverpool, UK, 29 Aug 2022 - 2 Sep 2022   High-power multi-beam klystrons represent a key component to amplify the acceleration field of the radio frequency superconducting (SRF) cavities at European XFEL. Exchanging these high-power components takes time and effort, thus it is necessary to minimize maintenance and down times and at the same time maximize the device operation. [...] 2020-08-1013:13 [PUBDB-2020-02965] Abstract Virovets, A. ; Peresypkina, E. ; Scheer, M. Giant supramolecules as molecular containers European Crystallographic Meeting 2019, ECM 2019, ViennaVienna, Austria, 18 Aug 2019 - 23 Aug 2019   One of the most outstanding areas in the modern coordination chemistry is the rational design of giantsupramolecules built up from metal ions connected to each other via polytopic ligands resulting in large hollowcages. The systematic approach to the synthesis of hollow supramolecules developed in our group is thecoordination of Cu+ and Ag+ cations to phosphorus atoms of the pentaphosphaferrocenes, [CpRFe(hapta5-P5)] (CpR=hapta5-C5R5, R=Me (Cp*), CH2Ph (CpBn), etc.) [1-3]. [...] External link: Fulltext 2020-08-1013:07 [PUBDB-2020-02964] Abstract Peresypkina, E. ; Virovets, A. ; Scheer, M. Phosphorus can do more: $\pi–\pi$ stacking of planar aromatic P5-rings European Crystallographic Meeting 2019, ECM 2019, ViennaVienna, Austria, 18 Aug 2019 - 23 Aug 2019   The directed non-bonding interactions play an important role in modern supramolecular chemistry. Concerningphosphorus, so-called pnictogen bonding is usually mentioned in this context [1] [...] External link: Fulltext