International Workshop on Breakdown Science and High Gradient Technology (HG2022)
We are pleased to announce the 14th workshop on breakdown science and high gradient technology, HG2022, will be held virtually on Zoom from May 16-19, 2022.
The HG workshop series dedicate to the discovery and advancement of high gradient technologies for advanced beam applications to both magnificent fundamental researches and civil life. As the idea of X-band technologies was born out of the demand of compact collider, it is naturally boned with the high gradient conception and has been substantially discussed in previous HG workshops. At all times, with the participation of material science, our vision on breakdowns has been expanded to a more microscopical area. By the tight collaborations worldwide, we have climbed to peaks that no one has ever reached before: accelerators with gradients over 100 MV/m and less breakdown probability have been achieved, and the gradient limitation has been pushed to over 200 MV/m. Such achievement has pushed the application of high-gradient technologies to scientific facilities and to both electron and proton radiotherapy equipment.
In previous HG workshops, from large collider to desktop light, from room-temperature to cryogenic, from new structures to high power-sources, from horizons under microscope to simulations with enormous particles, voice of discussions rises one after another, benefits far beyond the high gradient community.
HG2022 will continue our adventures. The workshop will share the latest advancements in, but not limited to, breakdown theory, low breakdown rate high-gradient accelerators, novel structure designs, low-cost accelerator fabrication technologies, accelerator applications to light source, medical, and industrial technologies, high efficiency high power RF sources, etc. Although this workshop will be hold virtually, the format of HG2022 follows the format of preceding workshops, including oral presentations and poster sessions and discussions.
We look forward to seeing you again.
Local Organizing Committee๏ผ
Jiaru Shi (Tsinghua University)
Hao Zha (Tsinghua University)
Qiang Gao (Tsinghua University)
Workshop Series International Organizing Committee๏ผ
Walter Wuensch (CERN)
Toshiyasu Higo (KEK)
Valery Dolgashev (SLAC)
Emilio Nanni (SLAC)
Gerardo D'Auria (Elettra)
Jiaru Shi (Tsinghua University)
Chunguang Jing (ANL)
Angeles Faus-Golfe (LAL)
Alessandro Gallo (INFN)
Wencheng Fang (SSRF/SARI)
Evgenya Simakov (LANL)
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Poster Session: File Upload
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1
Design and Prototyping of high-gradient Ka-band accelerating structuresSpeakers: Bruno Spataro, Luigi Faillace
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2
High temperature superconductor-based RF cavity development high power testSpeakers: Jessica Golm (Friedrich-Schiller-Universitaet Jena (DE)), Mitch Schneider
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3
SEY reduction and assembly techniques of dielectric accelerating structure applicationsSpeaker: Alexej Grudiev (CERN)
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4
Status and plans of the new XBand laboratory for accelerators and beams, X-LABSpeakers: Matteo Volpi (University of Melbourne (AU)), Matteo Volpi (The Melbourne University)
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5
Wakefield Damping of a Distributed Coupling LINAC for CLICSpeaker: Evan James Ericson (University of Saskatchewan (CA))
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1
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Facility Update: MON-1
Facility Updates
Convener: Walter Wuensch (CERN)-
7
Nextef2: Reborn X-band High-Gradient Test Stand at KEKSpeaker: Tetsuo Abe (High Energy Accelerator Research Organization (KEK))
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8
Operation status of C-band accelerator at SACLA and NewSUBARUSpeaker: Takahiro Inagaki (RIKEN SPring-8 center)
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10
Updates on Tsinghua High-power test standSpeaker: Hao Zha
- 11
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12
Analysis of the Commissioning and Operation of the SwissFEL LinacSpeaker: Tom Lucas
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7
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17:05
Break
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Facility Update: MON-2
Facility Updates
Conveners: Chunguang Jing (Euclid Techlabs / Argonne National Laboratory), Chunguang Jing-
13
Update on C-band High Gradient Testing at Los AlamosSpeaker: Evgenya Simakov (Los Alamos National Laboratory)
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15
Updates on the High Gradient S Band Experiments at IFICSpeaker: Pablo Martinez-Reviriego
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16
Status of FERMI upgrade and RF system development and testSpeakers: Nuaman Shafqat (Elettra Sincrotrone), nuaman shafqat (Elettra)
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13
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Poster Session: Poster MON
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18
Design and Prototyping of high-gradient Ka-band accelerating structuresSpeakers: Bruno Spataro, Luigi Faillace
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19
High temperature superconductor-based RF cavity development high power testSpeakers: Jessica Golm (Friedrich-Schiller-Universitaet Jena (DE)), Mitch Schneider
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20
SEY reduction and assembly techniques of dielectric accelerating structure applicationsSpeaker: Alexej Grudiev (CERN)
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21
Status and plans of the new XBand laboratory for accelerators and beams, X-LABSpeakers: Matteo Volpi (University of Melbourne (AU)), Matteo Volpi (The Melbourne University)
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22
Wakefield Damping of a Distributed Coupling LINAC for CLICSpeaker: Evan James Ericson (University of Saskatchewan (CA))
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18
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Poster Session: File Upload / Asian Session
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24
Design and test of a short pulse X-band deflectorSpeakers: Chunguang Jing, Chunguang Jing (Euclid Techlabs / Argonne National Laboratory), Chunguang Jing
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25
Design of disk-loaded traveling wave structure for the muon linacSpeaker: Kazumichi Sumi
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26
Development of X-band high gradient structures and CuAg alloysSpeaker: Bruno Spataro (Istituto Nazionale Fisica Nucleare (IT))
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29
Results and observations from high-gradient photoinjector testingSpeaker: Louise Cowie (Science and Technology Facilities Council)
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HG Structure: TUE-1Convener: Wencheng Fang (Shanghai Advanced Research Institute (SARI-SSRF))
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30
High Gradient Linac for High Intensity Positron ProductionSpeaker: Yoshinori Enomoto
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33
X-band Linacs in AWAKESpeaker: Steffen Doebert (CERN)
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35
X-band linac and optimized accelerating structures of the CompactLight projectSpeaker: Marco Diomede (DESY - MSK)
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30
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17:00
Break
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HG Structure: TUE-2Conveners: Gerardo D'Auria (Elettra Trieste), Gerardo D'Auria (Elettra Trieste)
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36
Recent Results on S and C band high gradient/high repetition rate RF Guns design, construction and testSpeaker: David Alesini
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37
Progress of accelerator system for the VIGAS project in Tsinghua UnviersitySpeaker: Gao Qiang
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38
Demonstration of Gradient above 300MV/m in short pulse regime using an X-band single-cell structureSpeaker: Jiahang Shao
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39
Commissioning results of the ASU CXLS kHz repetition rate X-band photoinjector and linacSpeaker: William Graves
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40
Metamaterial structures for High-Gradient Wakefield AccelerationSpeaker: Xueying Lu
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36
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Poster Session: Poster TUE-2
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42
Design and test of a short pulse X-band deflectorSpeakers: Chunguang Jing, Chunguang Jing (Euclid Techlabs / Argonne National Laboratory), Chunguang Jing
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43
Design of disk-loaded traveling wave structure for the muon linacSpeaker: Kazumichi Sumi
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44
Development of X-band high gradient structures and CuAg alloysSpeaker: Bruno Spataro (Istituto Nazionale Fisica Nucleare (IT))
- 45
- 46
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47
Results and observations from high-gradient photoinjector testingSpeaker: Louise Cowie (Science and Technology Facilities Council)
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Poster Session: File Upload / Asian Session
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48
Applying Machine Learning to Breakdown Prediction in High-Gradient RF CavitiesSpeakers: Christoph Obermair (Graz University of Technology (AT)), Lee Millar (CERN)
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49
Atomistic modeling of the coupling between electric field and bulk plastic deformationSpeaker: Soumendu Bagchi
- 50
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51
Cathode versus Anode Breakdown Features in Cryogenic Conditioning
Iaroslava Profatilova1, Marek Jacewicz1, Piotr Szaniawski1, Inna Popov2, Yinon Ashkenazy2
1Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
2Recah Institute of Physics, The Hebrew University of Jerusalem, IsraelSpeakers: Iaroslava Profatilova, Marek Jacewicz (Uppsala University (SE)) -
52
Comparative material study of breakdown threshold and robustness to low-energy proton irradiationSpeakers: Catarina Serafim (University of Helsinki (FI)), Ruth Peacock (Lancaster University (GB))
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53
Field enhancement sharpening mechanism via biased surface diffusionSpeaker: Jyri Kimari
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54
Recent Developments in X-band Klystrons at CETDSpeaker: Toshiyasu Higo (KEK)
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48
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Application: WED-1Convener: David Alesini
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56
The CHUV/CERN FLASH radiation facility collaborationSpeaker: Walter Wuensch (CERN)
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57
Compact Linac systems for VHEE and X-ray Flash radiotherapySpeaker: Hao Zha (Tsinghua University)
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58
Proton CT facility based S-band linacSpeaker: Wencheng Fang
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59
High-gradient C-band linacs for a VHEE-FLASH radiotherapy facilitySpeaker: Luigi Faillace
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60
High-gradient linac for image-guided hadron therapy with FLASH capabilitySpeakers: Aurora Araujo (Radiabeam), Sergei Kutsaev
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17:00
Break
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Breakdown and HG Structure: WED-2Convener: John Power
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61
Monte Carlo Model of High-Gradient Conditioning and OperationSpeaker: Lee Millar (CERN)
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62
Ab-initio Cu alloy design for high-gradient accelerating structuresSpeaker: Gaoxue Wang
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63
Development of e-beam welding for high gradient accelerating structuresSpeaker: Paul Carriere (RadiaBeam Technologies)
- 64
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65
Millimeter and Submillimeter Wave Accelerating Structures Fed by High-Power Ultra-Short PulsesSpeaker: Sergey Kuzikov
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61
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Poster Session: Poster WED-2
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66
Applying Machine Learning to Breakdown Prediction in High-Gradient RF CavitiesSpeakers: Christoph Obermair (Graz University of Technology (AT)), Lee Millar (CERN)
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67
Atomistic modeling of the coupling between electric field and bulk plastic deformationSpeaker: Soumendu Bagchi
- 68
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69
Cathode versus Anode Breakdown Features in Cryogenic Conditioning
Iaroslava Profatilova1, Marek Jacewicz1, Piotr Szaniawski1, Inna Popov2, Yinon Ashkenazy2
1Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
2Recah Institute of Physics, The Hebrew University of Jerusalem, IsraelSpeakers: Iaroslava Profatilova, Iaroslava Profatilova, Marek Jacewicz (Uppsala University (SE)) -
70
Comparative material study of breakdown threshold and robustness to low-energy proton irradiationSpeakers: Catarina Serafim (University of Helsinki (FI)), Ruth Peacock (Lancaster University (GB))
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71
Field enhancement sharpening mechanism via biased surface diffusionSpeaker: Jyri Kimari
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72
Recent Developments in X-band Klystrons at CETDSpeaker: Toshiyasu Higo (KEK)
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66
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Poster Session: File Upload
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73
Copropagating schemes for highgradient Dielectric Laser Accelerators (DLAs)Speaker: Giuseppe Torrisi (INFN - National Institute for Nuclear Physics)
- 74
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75
Simulation Design of Multicell DDA StructureSpeaker: Sarah Weatherly
- 76
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73
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Power Source / SLED: THU-1Convener: Tetsuo Abe (High Energy Accelerator Research Organization (KEK))
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77
High-intesity 300-GHz Terahertz-wave generation based on nonlinear optical down-conversionSpeaker: Hiroaki Minamide
- 78
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79
Magnetron Power Combination as compact X-band RF sourceSpeaker: Jiayang Liu
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80
Pulse-to-Pulse Waveform Analysis for Evaluation of Pulse Compressor SystemSpeaker: Yusei Bando (SOKENDAI/KEK)
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81
X-band Novel open cavity SLEDSpeaker: Xiaowei Wu
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82
RF design of the Pulse compression system for the klystron-based CLIC main linacSpeaker: Ping Wang
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77
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17:00
Break
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HG Structure: THU-2Convener: Evgenya Simakov (Los Alamos National Laboratory)
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83
Development and high power testing of an APF IH-DTL for the muon linacSpeaker: Yuga Nakazawa
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84
High-performance RFQ developmentSpeaker: Alexej Grudiev (CERN)
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85
High Power Test Results of X-Band Dielectric Disk Accelerating StructuresSpeaker: Ben Freemire (Euclid Techlabs)
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86
Development of a THz-driven field emission electron gunSpeaker: Elliot claveau
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87
Design of a corrugated waveguide for a high gradient wakefield acceleratorSpeaker: Sasha Siy
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83
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88
Closing remarksSpeakers: Alessandro Gallo, Jiaru Shi, Walter Wuensch (CERN)
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Poster Session: Poster THU-2
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89
Copropagating schemes for highgradient Dielectric Laser Accelerators (DLAs)Speaker: Giuseppe Torrisi (INFN - National Institute for Nuclear Physics)
- 90
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91
Simulation Design of Multicell DDA StructureSpeaker: Sarah Weatherly
- 92
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89
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