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8th International Workshop on Mechanisms of Vacuum Arcs (MeVArc 2019)

from Sunday 15 September 2019 (00:00) to Thursday 19 September 2019 (23:30)
Orto Botanico - Padova

        : Sessions
    /     : Talks
        : Breaks
15 Sept 2019
16 Sept 2019
17 Sept 2019
18 Sept 2019
19 Sept 2019
AM
08:00
Registration (until 08:15)
08:15
Opening remarks (until 08:30)
08:30
Field Emission - Modeling and Simulations (until 10:00)
08:30 First principles calculations of field emission from a defected metal surface - Andreas Kyritsakis Flyura Djurabekova (University of Helsinki)  
09:10 Suggestions about the role of carbon nanowhiskers in electrical breakdown - Dr Richard Forbes (University of Surrey)  
09:30 Consideration of the origin of enhanced field emission - Walter Wuensch (CERN)  
09:50 Field electron emission in an external magnetic field parallel to the surface - Yuliia Lebedynska (Sumy State Pedagogical University named after A.S. Makarenko, Sumy, Ukraine. )  
10:00
Coffee Break (until 10:30)
10:30
Field Emission - Modeling and Simulations (until 12:15)
10:30 Observations on the link between cathode plastic activity and arc nucleation - Yinon Ashkenazy (The Hebrew University of Jerusalem (IL))  
11:10 Investigations of the transition from field electron emission to plasma discharges (glow discharges and micro-arcs) with extended use of the Fowler-Nordheim plot - Dr Wolfram Knapp (Otto-von-Guericke-Universitaet Magdeburg)  
11:30 Does field emission from ‘real’ surfaces affect the high-pressure air breakdown in electric power equipment? - Dr Mikhail Benilov (Departamento de Física, FCEE, Universidade da Madeira, Funchal, Portugal, and Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal)  
11:50 The Breakdown Induced by Rupture of Dielectric layer (BIRD) model: insights and future developments - Dr emanuele spada  
08:30
Experiment and Diagnostics - Applications (until 10:00)
08:30 Diagnostics of hot anode surface by optical methods - Dr Sergey Gortschakow (Leibniz institute for plasma science and technology)  
09:10 Field estimation and the statistical analysis of dark currents - Sagy Itschak Lachmann (Hebrew University of Jerusalem)  
09:30 Spectroscopic and Microscopic Observations of Anode Behaviors in Vacuum Breakdown - Mr Zhipeng Zhou (University of Helsinki)  
10:00
Coffee Break (until 10:30)
10:30
Experiment and Diagnostics - Applications (until 12:15)
10:30 Vacuum breakdown voltage distributions between different contact arrangements and materials - Dr Erik Taylor (Siemens AG)  
10:50 Precision hign voltage platform for ion mass analysis - Marco Cavenago (INFN-LNL)  
11:10 Roles and Physical Processes of Anodes in the Initial Stage of Vacuum Breakdowns - Zhenxing Wang  
11:30 HVDC insulation between shaped electrodes separated by large vacuum gaps - Dr Nicola Pilan (Consorzio RFX )  
08:30
Experiment and Diagnostics - Applications (until 10:15)
08:30 Study on the post-arc sheath and the post-arc current in vacuum interrupters - Prof. Shenli Jia (Xi'an Jiaotong University)  
09:10 Simulations of vacuum arcs with liquid-metal cathodes - Dr Vladimir Kolobov (CFDRC)  
09:30 Study on breakdown phenomenon of high energy ions bombarding electrode - Ao Xu  
09:50 Generalizing Models of Vacuum Arcs - Jim Norem (Argonne (Retired))  
10:15
Coffee Break (until 10:45)
10:45
Experiment and Diagnostics - Applications (until 12:35)
10:45 Theory of electric field breakdown nucleation: mobile dislocation population dynamics and atomic simulations - Eli Engelberg (The Hebrew University of Jerusalem)  
Theory of electric field breakdown nucleation: mobile dislocation population dynamics and atomic simulations
11:15 Numerical Simulation of the Initial Phase of Unipolar Arcing in Fusion Relevant Conditions - Dr Helena Kaufmann (Departamento de Física, FCEE, Universidade da Madeira and Instituto de Plasmas e Fusão Nuclear, IST, Universidade de Lisboa)  
11:45 Diffusion on metal surfaces under high electric fields - Ekaterina Baibuz (University of Helsinki)  
12:15 Direct Field Ionisation - Sergio Calatroni (CERN)  
08:30
Modeling and Simulations - Applications (until 10:00)
08:30 Collective motion of large number of cathode spots - Prof. abdellah Kharicha (Christian-Doppler Laboratory for Metallurgical Applications of Magnetohydrodnamics)  
09:10 Machine learning for Cu surface kinetic Monte Carlo - Jyri Kimari  
09:30 Electrical Design and Voltage Holding Analyses of the MITICA Beam Source Mock-up and its Intermediate Electrostatic Shield - Tommaso Patton (Consorzio RFX)  
10:00
Coffee Break (until 10:30)
10:30
Modeling and Simulations - Applications (until 12:15)
10:30 Dynamic coupling between particle-in-cell and atomistic simulations - Andreas Kyritsakis  
11:10 Mutual exchange of charged particles in high voltage dc devices insulated by high vacuum - Dr Nicola Pilan (Consorzio RFX )  
11:30 Electric field devices for the EDM prototype ring - Jan Borburgh (CERN)  
11:40 Development of the design technique with empirical scaling of vacuum insulation for electrostatic accelerators with large surface area and locally concentrated electric field for fusion application - Dr Atsushi Kojima (QST)  
PM
14:30
Registration (until 18:30)
16:00 --- Organizing Committee Meeting ---
12:15
Lunch Break (until 14:00)
14:00
Field Emission - Modeling and Simulations (until 15:30)
14:00 A "nearly semi-quantitative" explanation of electrical breakdown effects reported by Julius Caesar and Pliny the Elder - Dr Richard Forbes (University of Surrey)  
14:40 3D Modeling of field electron emission from a micro/nano structured surface - Darius Mofakhami (Group of electrical engineering of Paris (GeePs), UMR 8507, CNRS)  
15:00 Field Emission and Multipactor Simulations in High Gradient RF Accelerators - Mr David Banon Caballero (CERN - IFIC - University of Valencia (ES))  
15:20 COMSOL simulation of the surface flashover in a MEMS insulator - Xiaoli Guo  
15:30
Coffee Break (until 16:00)
16:00
Modeling and Simulations - Applications (until 17:30)
16:00 Field Emission Model for PIC-DSMC Simulations Based on Nanoscale Surface Characterization - Chris Moore (Sandia National Labs)  
16:40 Simulations of material surface modifications due to combined influence of femtosecond laser irradiation and applied electric fields - Vahur Zadin (University of Tartu (EE))  
17:00 Breakdown-loaded electric field as a high gradient limit - Mr Jan Paszkiewicz (University of Oxford (GB))  
17:20 RF Breakdowns in the SPIDER experiment during its first operational phase - Andrea Zamengo (Consorzio RFX)  
17:30
Poster (until 19:00)
17:30 Why Murphy-Good plots are better than Fowler-Nordheim plots - Dr Richaard Forbes (University of Surrey)  
17:35 Modeling the Role of Effective β on Vacuum Breakdown Initiation: Scaling from Micro to Macro Dimensions - Dr Ashish Jindal (Sandia National Laboratories)  
17:40 Using Fowler-Nordheim plots to measure characteristic local field values - Dr Richard Forbes (University of Surrey)  
17:45 Field-emission investigations of micro-structured stainless steel 1.4301 (ASTM 304) for application of vacuum components as very large FE cathode arrays - Dr Wolfram Knapp (Otto-von-Guericke-Universitaet Magdeburg)  
17:50 Negative ion beam extraction in an RF hydrogen plasma with Cs seeding - Dr Min Park (Korea Atomic Energy Research Institute)  
17:55 Dark current fluctuation measurements the pulsed DC system - Mr Jan Paszkiewicz (University of Oxford (GB))  
18:00 Commissioning of IFIC High Gradient RF Laboratory to test S-band accelerating structures for hadron-therapy accelerators. - David Banon Caballero (CERN - IFIC - University of Valencia (ES))  
18:05 Combined Field Emission and Multipactor Simulation in High-Gradient RF Accelerating Structures - Mr David Banon Caballero (CERN - IFIC - University of Valencia (ES))  
18:10 The smooth transition from field electron emission to glow discharge (as a pre-stage of glow-to-arc transition) - a novel approach for the detection - Dr Wolfram Knapp (Otto-von-Guericke-Universitaet Magdeburg)  
18:15 Recent technical improvements to and plans for ArcPIC - Kyrre Ness Sjobaek (University of Oslo (NO))  
18:25 RF Breakdowns in the SPIDER experiment during its first operational phase - Andrea Zamengo (Consorzio RFX)  
18:30 Field electron emission in an external magnetic field parallel to the surface - Yuliia Lebedynska  
18:35 Investigations of the transition from field electron emission to plasma discharges (glow discharges and micro-arcs) with extended use of the Fowler-Nordheim plot - Dr Wolfram Knapp (Otto-von-Guericke-Universitaet Magdeburg)  
18:40 Direct Field Ionisation - Sergio Calatroni (CERN)  
18:45 COMSOL simulation of the surface flashover in a MEMS insulator - Xiaoli Guo  
19:00
Visit to Greenhouses (until 20:00)
20:00
Welcome Reception (until 22:00)
12:15
Lunch Break (until 14:00)
14:00
BUS transfer to NBTF - RFX (until 14:30)
14:30
Applications (until 16:30)
14:30 Progress of the ITER Neutral Beam Test Facility project - Vanni Toigo  
14:50 First year of operation of SPIDER, prototype source of ITER neutral beam injectors - Dr Gianluigi Serianni (Consorzio RFX)  
15:30 Design of the first vacuum and low-pressure gas insulation tests for the MITICA 1 MV electrostatic Accelerator - Dr Giuseppe Chitarin (University of Padova and Consorzio RFX)  
15:50 Surface coatings for arc prevention between plasma facing components - Dr Luigi Cordaro (Consorzio RFX)  
16:30
Coffee Break (until 17:00)
17:00
Visit to NBTF - RFX (until 18:45)
18:45
BUS transfer to NBTF - RFX (until 19:15)
12:35
Lunch Break (until 13:30)
13:30
Excursion to Ville Venete (until 20:00)
12:15
Lunch Break (until 14:00)
14:00
Experiment and Diagnostics - Applications (until 15:30)
14:00 Recent progress at pulsed dc systems - Iaroslava Profatilova (CERN)  
14:40 Preliminary results from the cryogenic pulsed dc system - Marek Jacewicz (Uppsala University (SE))  
15:00 STATISTICAL ANALYSIS OF CURRENT AND X-RAYS SIGNALS FOR A VACUUM HIGH VOLTAGE HOLDING EXPERIMENT - silvia spagnolo  
15:20 X-rays spectrum characterization during high voltage conditioning in .vacuum insulated system using high rate detectors - Gabriele Croci (Universita & INFN, Milano-Bicocca (IT))  
15:30
Coffee Break (until 16:00)
16:00
Experiment and Diagnostics - Applications (until 17:30)
16:00 Micromachined Surface-Flashover Ion Source Based on MEMS Technology - Prof. Yajun Wang (Institute of Electronic Engineering, China Academy of Engineering Physics)  
16:20 Plasma cleaning of Cu surfaces before and after conditioning with DC pulses - Anton Saressalo (Helsinki Institute of Physics (FI))  
16:40 Breakdown Measurements in High-Gradient RF Test Stands - Lee Millar (Lancaster University (GB))  
17:30
Poster (until 19:15)
17:35 Dark Current Analysis at CERN's X-band Facility - Mr David Banon Caballero (CERN - IFIC - University of Valencia (ES))  
17:40 Development of the design technique with empirical scaling of vacuum insulation for electrostatic accelerators with large surface area and locally concentrated electric field for fusion application - Dr Atsushi Kojima (QST)  
17:45 Electrode conditioning for prevention of DC arc formation in presence of a cold plasma background. - roberto cavazzana  
17:50 Limiting BD Power in a Pulsed DC System - Anton Saressalo (Helsinki Institute of Physics (FI))  
18:00 Cathodic Arc Expansion in Low-Pressure Helium - Brian Bentz (Sandia National Laboratories)  
18:05 Electrical Design and Voltage Holding Analyses of the MITICA Beam Source Mock-up and its Intermediate Electrostatic Shield - Tommaso Patton (Consorzio RFX)  
18:10 Electric field devices for the EDM prototype ring - Jan Borburgh (CERN)  
poster Electric field devices for EDM PTR
18:15 X-rays spectrum characterization during high voltage conditioning in .vacuum insulated system using high rate detectors - Gabriele Croci (Universita & INFN, Milano-Bicocca (IT))  
18:20 Optical Spectroscopy in the Large Electrode System at CERN - Ruth Peacock (Lancaster University (GB))  
18:25 Recent progress at pulsed dc systems - Iaroslava Profatilova (CERN)  
18:30 Generalizing Models of Vacuum Arcs - Jim Norem (Argonne (Retired))  
18:35 Diffusion on metal surfaces under high electric fields - Ekaterina Baibuz (University of Helsinki)  
18:40 Machine learning for Cu surface kinetic Monte Carlo - Jyri Kimari  
18:45 STATISTICAL ANALYSIS OF CURRENT AND X-RAYS SIGNALS FOR A VACUUM HIGH VOLTAGE HOLDING EXPERIMENT - silvia spagnolo  
18:50 Breakdown Measurements in High-Gradient RF Test Stands - Lee Millar (Lancaster University (GB))  
18:55 Precision hign voltage platform for ion mass analysis - Marco Cavenago (INFN-LNL)  
19:00 Field estimation and the statistical analysis of dark currents - Sagy Itschak Lachmann (Hebrew University of Jerusalem)  
20:00
Conference Dinner (until 23:00)
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