Name: 9th International Workshop on Mechanisms of Vacuum Arcs (MeVArc 2021)
Start: 2021-03-08T00:00:00+01:00
End: 2021-03-12T23:59:00+01:00
Location: Online

9th International Workshop on Mechanisms of Vacuum Arcs (MeVArc 2021)

from Monday 8 March 2021 (00:00) to Friday 12 March 2021 (23:59)

Monday 8 March 2021

14:00 Opening remarks
Opening remarks
14:00 - 14:15
14:15 Effects of H- irradiation
Effects of H- irradiation
14:15 - 15:45
Contributions

14:15 Low-energy H- irradiation of accelerators components: influence of material and material properties on the breakdown resistance at high electric fields - Sergio Calatroni (CERN)

14:45 Microscopy investigation of the surface behaviour of different materials after H- irradiation in different conditions - Ana Teresa Perez Fontenla (CERN)

15:15 Pulsed DC Large Electrode System Study of the effects of H- Irradiation on Breakdowns - Ruth Peacock (Lancaster University (GB))
15:45 Coffee break
Coffee break
15:45 - 16:00
16:00 DC systems
DC systems
16:00 - 17:30
Contributions

16:00 Identification of Dislocation Structure in Cu Electrodes - Inna Popov

16:30 Copper Surfaces: Comparative Studies in Cryogenic High Fields - Elias Waagaard (Uppsala University)

17:00 In-situ plasma cleaning of Cu surfaces for reducing the generation of vacuum arc breakdowns - Anton Saressalo (Helsinki Institute of Physics (FI))
Tuesday 9 March 2021
14:00 Arc and plasma dynamics
Arc and plasma dynamics
14:00 - 15:30
Contributions

14:00 Electrostatic discharges on very large spacecrafts solar panels: coupled model of a cathode spot and flash-over expansion in vacuum - Loanne Monnin

14:30 Investigation of Vacuum Breakdown in Pulsed DC Systems - Helena T. C. Kaufmann (University of Madeira)

15:00 Kinetic Simulation of the Plasma Dynamics in the Post-arc Stage - Dan Wang
15:30 Coffee Break
Coffee Break
15:30 - 15:45
15:45
15:45 - 17:45
Contributions

15:45 Real-time observation of strong electric-field-induced surface modification - Sergei Vlassov

16:15 Characterization of Cu electrodes after vacuum breakdown with AFM and SEM - Sven Oras (University of Tartu)

16:45 New Development of BIRD model - Emanuele Spada (Consorzio RFX)

17:15 Characterization of the breakdown voltage of vacuum interrupters by different procedures - Erik D.Taylor (Siemens AG, Smart Infrastructure)
Wednesday 10 March 2021
14:00 Theory
Theory
14:00 - 15:30
Contributions

14:00 General scaling laws of space charge effects in field emission - Mihkel Veske

14:30 Quantum regime of field emission based on exchange-correlation effects in a nanogap - Nan Li (Xi‘an Jiatong University)

15:00 Theoretical study of field emission from dielectric coated surfaces - Peng Zhang (Michigan State University)
15:30 Coffee Break
Coffee Break
15:30 - 15:45
15:45 Breakdown in RF structures & diamond
Breakdown in RF structures & diamond
15:45 - 17:00
Contributions

15:45 Field Emission Microscopy of Diamond and Nanotube Materials - Taha Y. Posos (Michigan State University)

16:10 FEgen v.1: Fowler-Nordheim Equation Based Initial Particle Distribution Freeware for Advanced Beam Dynamics Simulations - Emily Jevarjian (Michigan State University)

16:35 FEbeam: A Comprehensive Field Emission Data Processing for Field Emission and Breakdown Analysis in RF Environment - Mitchell Schneider (Los Alamos National Laboratory)
Experiments & Diagnostics
Experiments & Diagnostics
15:45 - 17:05
Contributions

15:45 Study of X-ray spectra emitted during High Voltage DC conditioning in high vacuum - Nicola Pilan (Consorzio RFX)

16:05 Low-Z anode wires testing for particle accelerator electrostatic septa - Jan Borburgh (CERN)

16:25 Application of Machine Learning to Breakdown Prediction in CERN’s High-Gradient Test Stands - Lee Millar (Lancaster University (GB))

16:45 Analysis of surface temperature dynamics of switching vacuum arc contacts - Sergey Gortschakow (Leibniz institute for plasma science and technology)
Thursday 11 March 2021
14:00 Experiments
Experiments
14:00 - 15:30
Contributions

14:00 ANALYZING EXPERIMENTAL DATA ON INGINITION OF CORONA DISCHARGES AND BREAKDOWN ON POSITIVE ELECTRODES IN HIGH-PRESSURE AIR FOR DIAGNOSTICS OF SURFACE MICROPROTRUSIONS - Nuno Ferreira (Universidade da Madeira)

14:30 Silicon Field Emitter fabrication by TMAH Etching of convex/concave corners - Andreas Schels (Institute of Physics, Faculty of Electrical Engineering and Information Technology, Universität der Bundeswehr München)

15:00 A New Experimental Method of beta Estimation - Sagy Itschak Lachmann (Hebrew University of Jerusalem)
15:30 Coffee Break
Coffee Break
15:30 - 15:44
15:45 Field emission
Field emission
15:45 - 17:05
Contributions

15:45 Quantum oscillations as a possible way of the increasing pre-breakdown field emission current - Serhii Lebedynskyi (Institute of Applied Physics, National Academy of Sciences of Ukraine)

16:05 A tutorial commentary on the Schottky constant - Richard Forbes (University of Surrey)

16:25 Comments on the presentation of field emission theory in the SLAC report - Richard Forbes (University of Surrey)

16:45 Nano-tendril bundles behavior under plasma-relevant electric fields - Vladimir Kulagin (National Research Nuclear University MEPhI)
Modelling and simulations
Modelling and simulations
15:45 - 17:05
Contributions

15:45 Diffusion on Cu Surface under Electric Field with Collective Variable -accelerated Molecular Dynamics - Jyri Kimari

16:05 Micron-scale Field Emission Model for PIC-DSMC Simulations Based on Nanoscale Surface Characterization - Chris Moore (Sandia National Labs)

16:25 Polarization characteristics of adatoms diffusing on W{110} surface under applied electric field - Ekaterina Baibuz (University of Helsinki)

16:45 Hydrogen accumulation in copper: hydrostatic effect on dislocations - Alvaro Lopez Cazalilla (University of Helsinki)
Friday 12 March 2021
14:00 Breakdown in RF structures
Breakdown in RF structures
14:00 - 15:30
Contributions

14:00 Light and Electron Emission as Breakdown Probes in X-band rf microscope - Sergey Baryshev

14:30 Mo/Cu Multilayers by Bias HiPIMS for X-Band technology - Valentino Rigato (INFN - National Institute for Nuclear Physics)

15:00 FEbreak: A Comprehensive Diagnostic and Automated Conditioning Interface for Analysis of Breakdown and Dark Current Effects - Mitchell Schneider (Los Alamos National Laboratory)
15:30 Coffee Break
Coffee Break
15:30 - 15:45
15:45 Breakdown Models
Breakdown Models
15:45 - 17:45
Contributions

15:45 Monte Carlo Model of High-Gradient Conditioning and Operation - Lee Millar (Lancaster University (GB))

16:15 Application of the Voltage Holding Prediction Model to floating and fixed shield vacuum interrupters - Tommaso Patton (Consorzio RFX)

16:45 Ab initio investigation of Cu nanoparticle behavior under high electric field - Ye Wang

17:15 An integrated approach to understanding RF vacuum arcs - Jim Norem (Argonne Labs (retired))

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