The meeting of the Beam Dynamics Home group takes place on Mondays, 14:00, building 30b, room 459
Order by person, keyword
- Schmid,Steffen, Gjonaj,Erion, De Gersem,Herbert: Simulation Studies for the PITZ THz SASE FEL (PDF)
- Lueangaramwong,Anusorn: Update on Design and CSR Simulation Study of Bunch Compressor for the PITZ THz SASE FEL Experiment (PPTX)
- Li,Xiangkun: Simulation of the radiation in the THz SASE FEL at PITZ with Warp (PPTX)
- Dohlus,Martin: Discrete Resonator Models (PDF)
- Ackermann,Wolfgang, Müller,Wolfgang, De Gersem,Herbert: Dipole Mode Simulations for a TESLA 1.3 GHz Cavity (PDF)
- Gjonaj,Erion, Flisgen,T.: A high order FEM wakefield solver in the frequency domain (PDF)
- Bazyl,Dmitry, Müller,Wolfgang, De Gersem,Herbert: HOMs Study in the 500 MHz BESSY Cavity (PDF)
- Yong-Chul,Chae, Agapov,Ilya, Brinkmann,Reinhard, Chao,Hung-Chun, Ehrlichmann,Heiko, Keil,Joachim, Leemans,Wim, Gavalda,Xavier Nuel, Wanzenberg,Rainer, Zhang,JieXi: Petra IV Overview Collective Effects (PDF)
- Wei,Junhao: HOM-based Beam and Cavity Diagnostics in 1.3GHz SC Cavity at FLASH (PDF)
- Bazyl,Dmitry, De Gersem,Herbert: HOMs Study in the 500 MHz BESSY Cavity (PDF)
- Schmid,Steffen, Gjonaj,Erion, De Gersem,Herbert: Beam Dynamics Studies for the PITZ Undulator (PDF)
- Wanzenberg,Rainer: Petra IV, Overview and RF System (PDF)
- Ackermann,Wolfgang, De Gersem,Herbert, Müller,Wolfgang: Beam Loading Simulations for a TESLA 1.3 GHz Cavity (PDF)
- Wei,Junhao, Baboi,Nicoleta: HOM based cavity tilt measurement in TESLA cavities at FLASH (PDF)
- Quetscher,Frederik, Gjonaj,Erion: Heating of a beam dechirper for the XFEL (PDF)
- Ackermann,Wolfgang, De Gersem,Herbert: Eigenmode Calculations for a 1.5 Cell SRF Gun Derived from a TESLA Cavity (PDF)
- Dohlus,Martin: Calculation of a SC Gun cavity with Pickup (PDF)
- Chen,Ye: Experimental observation of a frequency detuning dependent RF gun coupler kick (PDF)
- Boine-Frankenhein,Oliver, De Gersem,Herbert, Klingbeil,Harald, Kurz,Stefan, Muntenau,Irina, Schoeps,Sebastian, Weiland,Thomas: Institute for Accelerator Science and Electromagnetic Fields (PDF)
- Mueller,Jost: Recent Upgrades of the Optical Synchronization System at FLASH (PDF)
- Wesch,Stephan: Comparative Measurements between CRISP and LOLA-TDS at 13SMATCH (PDF)
- Müller,Wolfgang, Ackermann,Wolfgang, De Gersem,Herbert: Evaluating Designs for a PETRA IV Cavity (PDF)
- Pfeiffer,Sven: Precision Control of SRF Cavities (PDF)
- Wei,Junhao, Baboi,Nicoleta: HOM Based Beam Diagnostics in TESLA Superconducting Cavities at FLASH (PDF)
- Pham-Xuan,Vinh, Ackermann,Wolfgang, De Gersem,Herbert: Contour Integral Method for Computation of Eigenmodes of Tesla Cavities (PDF)
- Ackermann,Wolfgang, De Gersem,Herbert: Code Development for Large-Scale Eigenvalue Calculations (PDF)
- Bizzozero,David, Gjonaj,Erion, De Gersem,Herbert: Updates on the Validity of the Paraxial Approximation for CSR Wake Fields (PDF)
- Krasilnikov,Mikhail: S2E simulations for proof-of-principle experiment on THz SASE FEL at PITZ (PDF)
- Wei,Junhao, Baboi,Nicoleta, Shi,Liangliang: HOM Based Beam Diagnostics in TESLA Superconducting Cavities at FLASH (PDF)
- Gjonaj,Erion: Wakefield calculation in the frequency domain (PDF)
- Schmid,Steffen, Gjonaj,Erion, De Gersem,Herbert: REPTIL - Relativistic 3D Space Charge Particle Tracking Using the Fast Multipole Method (PDF)
- Bazyl,Dmitry, Müller,Wolfgang, De Gersem,Herbert: A 3 GHz SRF reduced-beta Cavity for the S-DALINAC (PDF)
- Baboi,Nicoleta: The HOMSC2018 Workshop in Cornell (PDF)
- Faatz,Bart: Simulations of FLASH1 undulator deterioration on the FEL performance (PDF)
- Faatz,Bart: Results of energy cross-calibration at FLASH (PDF)
- Chen,Ye, Krasilnikov,Mikhail: Updates on Beam Dynamics Studies and Emission Modelling at PITZ (PDF)
- Pham-Xuan,Vinh, Ackermann,Wolfgang, De Gersem,Herbert: Calculation of Eigenmodes for Accelerator Cavities with Losses using CIM (PDF)
- Zagorodnov,Igor: Beam Manipulation and Diagnostics with Wakefield Structure at the European XFEL (PDF)
- Ackermann,Wolfgang, De Gersem,Herbert, Müller,Wolfgang: Convergence Study for FEM- and FIT-Based Eigenvalue Solvers (PDF)
- Dohlus,Martin: Poisson Approaches and 3D-Gun (PDF)
- Dohlus,Martin, Zagorodnov,Igor: Effect of Collimator-Wake in BC-Bypass (PDF)
- Schmid,Steffen, Gjonaj,Erion, De Gersem,Herbert: Advanced space charge tracking methods for high brilliance electron sources (PDF)
- Schmid,Steffen, Pumpe,Sebastian,, Dohlus,Martin: DOE laser beam shaping at XFEL (PDF)
- Bizzozero,David, Gjonaj,Erion, De Gersem,Herbert: Comparison of CSR Wake Fields with CSRDG and Other Methods (PDF)
- Bizzozero,David, Gjonaj,Erion, De Gersem,Herbert: Updates on CSR Wake Fields with a Discontinuous Galerkin Time Domain Method (PDF)
- Schmid,Steffen, Gjonaj,Erion, De Gersem,Herbert: Advanced space charge tracking methods for high brilliance electron sources (PDF)
- Pham-Xuan,Vinh: Contour Integral Method for Simulation of Acceleration Cavities (PDF)
- Hellert,Thorsten: Coupler Kick Studies (PDF)
- Chen,Ye, Krasilnikov,Mikhail: Selected Beam Studies at PITZ in 2017 (PDF)
- Krasilnikov,Mikhail: Beam Dynamics Simulations for the current setup of the EXFEL Photo Injector (PDF)
- Ackermann,Wolfgang, De Gersem,Herbert, Müller,Wolfgang: Field Map Calculation of the Fundamental Mode for the Normal Conductive PITZ Gun (PDF)
- Dohlus,Martin: Problems with Poisson Approach (PDF)
- Gjonaj,Erion: Wakefield calculations with PBCI (PDF)
- De Gersem,Herbert, Koch,Stephan, Roemer,Ulrich, Schoeps,Sebastian: Simulating Hysteresis and Remanence in Accelerator Magnets (PDF)
- Ackermann,Wolfgang: Field Map Calculation for the Fundamental Mode for a Single TESLA 3.9 GHz Cavity with Couplers (PDF)
- Wanzenberg,Rainer: Petra IV - 100 MHz Cavity (PDF)
- Ebert,Michael: Petra-III 500 MHz Cavity (PDF)
- Zagorodnov,Igor: Passive Wakefield Structure Insertion for the European XFEL (PDF)
- Bizzozero,David: CSR Modelling with Discontinuous Galerkin (PDF)
- Dohlus,Martin: Calculations for Non-Uniform Cathode-Distributions (PDF)
- Krasilnikov,Mikhail: Selected BeamStudies at PITZ in 2016 (PDF)
- Liangliang,Shi: Higher Order Mode Based Beam Phase Measurements: Simulations and Results (PDF)
- Tsakanian,Andranik, Gjonaj,Erion, De Gersem,Herbert, Weiland,Thomas: Geometric and resistive wake field calculations with PBCI (PDF)
- Ackermann,Wolfgang, De Gersem,Herbert, Weiland,Thomas: Eigenmode Analysis for the PETRA III Cavity (PDF)
- Dohlus,Martin: A Transverse Deflecting RF Structure for Sub-Micrometer Bunches at 5 to 50 MeV (PDF)
- Chen,Ye, Gjonaj,Erion, De Gersem,Herbert, Müller,Wolfgang, Weiland,Thomas: Beam Imperfection Studies - Status of RF coupler asymmetry studies (PDF)
- Wanzenberg,Rainer: Petra III (PDF)
- Chen,Ye, Gjonaj,Erion, De Gersem,Herbert, Müller,Wolfgang, Weiland,Thomas: Electron Emission Studies Using Enhanced QE Models (PDF)
- Krasilnikov,Mikhail: Update on Beam Imperfections Studies at PITZ (PDF)
- Dinter,Hannes: Longitudinal Diagnostics for Beam-Based Intra Bunch-Train Feedback (PDF)
- Krasilnikov,Mikhail: Hamburg Investigations on electron beam imperfections at the PITZ photo injector (PDF)
- Ackermann,Wolfgang, De Gersem,Herbert, Liu,Cong, Weiland,Thomas: Eigenmode Calculations for the PETRA III 7-Cell 500 MHz Cavity (PDF)
- Tsakanian,Andranik, Gjonaj,Erion, De Gersem,Herbert, Weiland,Thomas: Status of Resistive Wall Wakefield Calculations with PBCI (PDF)
- Corno,Jacopo, De Falco,Carlo, De Gersem,Herbert, Schoeps,Sebastian: Isogeometric Analysis and its Application to Cavity Simulation (PDF)
- Chen,Ye, Gjonaj,Erion, De Gersem,Herbert, Weiland,Thomas: Beam dynamics studies for PITZ using a 3D full-wave Lienard-Wiechert PP code (PDF)
- Krasilnikov,Mikhail: Investigations on electron beam imperfections at the PITZ photo injector (PDF)
- Baboi,Nicoleta: HOM-based Diagnostics in SC Accelerating Cavities at FLASH and the European XFEL (PDF)
- Yurkov,Mikhail: Fundamental Limitations of the SASE FEL Photon Beam Pointing Stability (PDF)
- Ackermann,Wolfgang, De Gersem,Herbert, Liu,C., Weiland,Thomas: Mode Atlas for Tesla Cavity (PDF)
- Hernandez-Garcia,Carlos, Krasilnikov,Mikhail: Photoemission studies at PITZ:Analysis on extracted charge (PDF)
- Krasilnikov,Mikhail: Motivation of emission studies at PITZ (PDF)
- Ackermann,Wolfgang, De Gersem,Herbert, Liu,C., Weiland,Thomas: Mode Atlas for the TESLA 1.3 GHz Structure (PDF)
- Lei,Bifeng, Gjonaj,Erion, De Gersem,Herbert, Weiland,Thomas: Numerical Study of the self-modulation process in PWFA (PDF)
- Chen,Ye, Gjonaj,Erion, Müller,Wolfgang, De Gersem,Herbert, Weiland,Thomas: Numerical modelling of photoemission for the PITZ photoinjector (PDF)
- Tsakanian,Andranik, Gjonaj,Erion, De Gersem,Herbert, Weiland,Thomas: Current Status of Time Domain Wakefield Solver for Resistive Structures (PDF)
- De Gersem,Herbert: 3D Simulation of Transient Effects in Accelerator Magnets (PDF)
- Tsakanian,Andranik: Time Domain Numerical Method for Resistive Wakefield Calculations of Ultra-Short Bunches (PPTX)
- Chen,Ye, Gjonaj,Erion: Photoemission Modeling of the High Brightness Electron Bunch for E-XFEL Applications (PDF)
- Dohlus,Martin: Coupler Kicks, CSR and Petra-Cavity Martin Dohlus (PDF)
- Lei,Bifeng: Numerical Study of the Self-modulated Plasma Wakefield Acceleration (PDF)
- Dohlus,Martin: High-Precision Field-Maps of TESLA Cavity: Coupler Kicks (PDF)
- Tsakanian,Andranik: Outlook on Surface-Impedance-Boundary-Conditions Implementation in Time-Domain Wakefield Calculations (PDF)
- Chen,Ye: Photoemission Studies of the PITZ Photoinjector: Bunch Charge Extraction (PDF)
- Ackermann,Wolfgang: Calculation of Complex Eigenmodes for TESLA 1.3 GHz and BC0 structures (PDF)
- Wacker,Violetta: Sub-femtosecond Single-Spike X-Ray Pulse from Electron Bunches with Very Low Charge at LCLS (PDF)
- Rehders,Marie: Emittance Measurements for Low Charge Operation with Short-Pulse Injector Laser at FLASH (PDF)
- Marchetti,Barbara: Short bunch, low charge operation at the European XFEL using different longitudinal photo-cathode laser distributions (PDF)
- Hass,Eugen: Longitudinal Bunch Profile Reconstruction Using CRISP4 Spectrometer (PDF)
- Ackermann,Wolfgang, Liu,C., Müller,Wolfgang, Weiland,Thomas: Application of a Complex Eigenmode Solver to the TESLA 1.3 GHz Structure (PPTX,PDF)
- Krasilnikov,Mikhail: Beam dynamics simulations for the European XFEL photo injector (PDF)
- Chen,Ye, Gjonaj,Erion, Müller,Wolfgang, Weiland,Thomas: Bunch Emission Simulation for the PITZ* Electron Gun Using CST Particle Studio (PPTX)
- Agapov,Ilya: Overview of Xcode, a Radiation and Beam Dynamics Simulation Code for European XFEL (PDF)
- Gjonaj,Erion: DESY/TEMF Meeting - Status 2012 (PDF)
- Dohlus,Martin: Longitudinal SC Amplifier (PDF)
- Krasilnikov,Mikhail: Simulations at PITZ, status 2012 (PDF)
- Ackermann,Wolfgang, Liu,C., Müller,Wolfgang, Weiland,Thomas: Calculation of Eigenmodes in Superconducting Cavities (PDF)
- Chen,Ye, Gjonaj,Erion, Müller,Wolfgang, Weiland,Thomas: PIC Simulation for the Electron Source of PITZ (PDF)
- Feng,Guangyao: Study of ACC1 voltage amplitude changing impact on SASE at FLASH (PDF)
- Kot,Evgenij: Injector Optimization for Simultaneous Operation with Different Bunch Charges (PPTX)
- Zholents,Alexander, Carlsten,Bruce, Stupakov,Gennady, Gover,Avi, DiMitri,Simone, Limberg,Torsten, Fawley,Bill, Cornacchia,Max, Fiorito,Ralph, Douglas,Dave: Summary Microbunching Workshop 2012 (PPTX)
- Krasilnikov,Mikhail: TUD-TEMF-Meeting: Photo injector optimization at PITZ, status 2011 summary (PDF)
- Gjonaj,Erion: TUD-TEMF-Meeting:Emittance studies for the PITZ injector-Field map calculations (PDF)
- Ackermann,Wolfgang: TUD-TEMF-Meeting:Calculation of Eigenfieldsfor the European XFEL Cavities (PDF)
- Lünzer,Laura: TUD-TEMF-Meeting:Wakefield computation of PETRAIII taper section (PDF)
- Dohlus,Martin: About Micro Bunching - Investigation for DOGLEG with Longitudinal Dispersion (PDF)
- Behrens,Christopher, Decking,Winfried, Dohlus,Martin, Edwards D., Edwards H., Gerth,Christopher, Hellert,Thorsten, Limberg,Torsten, Poit,P., Schneidmiller,Evgeny, Scholz,Matthias, Vogt,Mathias, Wesch,S., Yurkov,Mikhail, Zagorodnov,Igor: Beam Dynamic Shifts 2011 (PPTX)
- Schneidmiller,Evgeny, Yurkov,Mikhail, Behrens,Christopher, Decking,Winfried, Delsim-Hashemi,Hossein, Limberg,Torsten, Kammering,Raimund, Treusch,R., Guerassimova,N.: Tuning and characterization of short electron and FEL radiation pulses at FLASH during shifts 19(a)-21(m).01.2011 (PPT)
- Ackermann,Wolfgang: Calculation of Eigenfieldsfor the European XFEL Cavities (PDF)
- Gjonaj,Erion: Projektbericht 2010:Strahldynamiksimulationen fuer XFEL, Wakefeldberechnungen fuer PETRA III,Wakefelder kurzer Bunche in der Undulatorkammer (PDF)
- Balandin,Vladimir: Errors in Measuring Transverse and Energy Jitters by Beam Position Monitors (PPT)
- Orlov,Sergey: Representation of an arbitrary beam transfer matrix and solution of the beam matching problem using equally spaced thin-lens quadrupoles (PPT)
- Kuhn,Maria: Influence of the Third Harmonic Module on the Beam Size (PPT)
- Wang,Dong: The FEL Programs at Shanghai Institute of Applied Physics (SINAP) (PDF)
- Dohlus,Martin: Impact of CSR Effects in the XFEL Collimation Section and Beam Distribution (PDF)
- Zagorodnov,Igor: Expected Radiation in FLASH with 3rd Harmonic Module (PDF)
- Dohlus,Martin: Three Bunch Compressor Working Points for 0.5 and 1 nC (PDF)
- Dohlus,Martin: Emittance Growth by Transverse Wakes - Wakes from Surface Effects in Round Beam Pipes (PDF)
- Dohlus,Martin: S2E Simulation of FLASH with 3rd Harm. Section and Coupler Kicks (PDF)
- Vogt,Mathias: Dispersion-free Steering for the SASE Undulators in the XFEL (PDF)
- Li,Yuhui: Deflecting Section for the European XFEL Polarization Adjustable Beam Line (SASE3) (PDF)
- Kot,Evgenij: Chromaticity Properties of the Injector Beam Line and Operation at the Laser Heater for Different Working Points of the Three Stage Bunch Compressor System (PDF)
- Lipka,Dirk: Dipole Field Impact on Beam Axis Caused by BPM Magnetic Feedthrough (PDF)
- Dohlus,Martin: Working Points for Three Stage Bunch Compression in the XFEL (PDF)
- Dohlus,Martin: Wakes from Surface Effects in Round Beam Pipes (PDF)
- Kot,Evgenij: Laser Heater Integration into XFEL Injector and Overview of the Space Margins (PDF)
- Zagorodnov,Igor: Impedance Budget (Beam Collimation and Switchyard Review) (PDF)
- Wohlenberg,Torsten: Vacuum Issues (Beam Collimation and Switchyard Review) (PDF)
- Obier,Frank: Pulser (Beam Collimation and Switchyard Review) (PDF)
- Meyners,Norbert: Plattformwagen (Beam Collimation and Switchyard Review) (PDF)
- Meyners,Norbert: Installation, Tunnel Layout (Beam Collimation and Switchyard Review) (PDF)
- Krause,Bernward: Warm Magnets (Beam Collimation and Switchyard Review) (PDF)
- Golubeva,Nina, Balandin,Vladimir: Collimation Section (Beam Collimation and Switchyard Review) (PDF)
- Decking,Winfried: Section Overview (Beam Collimation and Switchyard Review) (PDF)
- Decking,Winfried: Diagnostics and Fast Transverse Feedback (Beam Collimation and Switchyard Review) (PDF)
- Decking,Winfried: Beam Switchyard (Beam Collimation and Switchyard Review) (PDF)
- Grimm,Oliver: Evidence for 'Small Scale Structures' Through Coherent Radiation (PDF)
- Dohlus,Martin: Absorption of Very High Frequent EM Fields in Cryo-Modules (PDF)
- Frisch,Josef: LCLS Accelerator R+D Issues: Beam Transverse Profile Measurement (PDF)
- Kot,Evgenij: Simulations on Multi Bunch Dynamics at FLASH with Different Damping of the HOM at 3,9GHz Cavities (PDF)
- Herb,Steve: IRMIS: A Practical Ansatz for an Accelerator Operations (PDF)
- Vogt,Mathias: Start-to-End Simulations for Micro-Bunching Experiments at FLASH (PDF)
- Prat,Eduard: Latest Projected Emittance Measurements at FLASH (PDF)
- Kot,Evgenij: Simulations on Multi Bunch Dynamics at FLASH with Different Damping of the HOM at 3,9GHz Cavities (PDF)
- Dohlus,Martin: XFEL BC Lattice and Chamber Geometry (PDF)
- Prat,Eduard: Dispersion Sensitivities for the XFEL (PDF)
- Kuk,Donghoon: Simulation Results of Microbunching Instability with Velocity Bunched Beam on the FLASH (PDF)
- Li,Yuhui: Tolerances for the XFEL Undulator System (PDF)
- Hacker,Kirsten: Update on Analysis and Simulations of Beam Tilt Measurements in BC2 (Part 2) (PDF)
- Gerth,Christopher: Update on Analysis and Simulations of Beam Tilt Measurements in BC2 (Part 1) (PDF)
- Weise,Hans: Linac Overview (Linac Review) (PDF)
- Vogel,Elmar: 3rd Harmonic RF Module Issues (Linac Review) (PDF)
- Lilje,Lutz, Lang,Rolf: Module Issues (Linac Review) (PDF)
- Kot,Evgenij: Multi-Bunch Beam Dynamics (Linac Review) (PDF)
- Dohlus,Martin: Wakes in Cavities (Linac Review) (PDF)
- Decking,Winfried: Main Beam Optics and Tolerances (Linac Review) (PDF)
- Brück,Heinich-Dieter: Cold Magnets and Vibrations (Linac Review) (PDF)
- Baboi,Nicoleta: BPMs and HOM-BPMs for the XFEL Linac (Linac Review) (PDF)
- Schmidt,Bernhard: Diagnostic Tools and Optical Replica (Bunch Compression system, Review) (PDF)
- Schlarb,Holger: Diagnostic Overview and FB (Bunch Compression System Review) (PDF)
- Mildner,Nils, Wohlenberg,Torsten, Zapfe,Kirsten: Vacuum (Bunch Compression System Review) (PDF)
- Limberg,Torsten: Tuning (Bunch Compression System Review) (PDF)
- Limberg,Torsten: Introduction and Concept (Bunch Compression System Review) (PDF)
- Gerth,Christopher: Diagnostic Sections Layout (Bunch Compression System Review) (PDF)
- Dohlus,Martin: Simulation Calculations (Bunch Compression System Review) (PDF)
- Dohlus,Martin: Bunch Compression Options (Bunch Compression System Review) (PDF)
- Decking,Winfried: Optic and Tolerances (Bunch Compression System Review) (PDF)
- Zapfe,Kirsten: Vacuum Issues (Injector Beam Line Review) (PDF)
- Schmitz,Michael: Beam Dump (Injector Beam Line Review) (PDF)
- Schlarb,Holger: Special Diagnostics (Injector Beam Line Review) (PDF)
- Nölle,Dirk: Standard Diagnostics (Injector Beam Line Review) (PDF)
- Krause,Bernward: Warm Magnets (Injector Beam Line Review) (PDF)
- Krasilnikov,Mikhail: Injector Simulations (Injector Beam Line Review) (PDF)
- Korepanov,Sergey: PITZ Transverse Deflecting Structure (Injector Beam Line Review) (PDF)
- Han,Jang Hui: Dark Current (Injector Beam Line Review) (PDF)
- Flöttmann,Klaus: Injector Introduction (Injector Beam Line Review) (PDF)
- Decking,Winfried: Summary (Injector Beam Line Review) (PDF)
- Decking,Winfried: Optics (Injector Beam Line Review) (PDF)
- Schlarb,Holger, Röhrs,Michael, Hüning,Markus: Slice Emittance Measurements at TTF - Introduction (PDF)
- Schlarb,Holger, Röhrs,Michael, Hüning,Markus: Horizontal Slice Emittance Measurements with LOLA (PDF)
- Seidel,Mike: Design Options for the XFEL Undulator Vacuum Chamber (PDF)
- Dohlus,Martin: Undulator Resistive Wall Wake (Bunch Shape from Longitudinal Tracking) (PDF)
- Dohlus,Martin: BC2 at 2.5GeV with ASTRA Particles (Scaled from old Energy) (PDF)
- Dohlus,Martin: CSR Gain in XFEL Double BC (Green's Method, Energy Modulation) (PDF)
- Baboi,Nicoleta: Preliminary Results on Long Range Wakefield Study in Cold Linear Collider (PDF)
- Kim,Yujong: S2E Simulations for TESLA XFEL Project with a New Bunch Compression Layout (PDF)
Last update: Tue Jan 14 17:07:07 2020 by meykopff