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Mini-workshop on impedance modeling and impedance effects at SuperKEKB and future colliders

Meeting room, KEKB control building

This topical two-day mini-workshop is a follow-up workshop after the eeFACT2022 for scientists working on various projects to discuss impedance modeling and impedance effects at circular accelerators, including colliders SuperKEKB, FCC-ee, CEPC, EIC, and light sources ESRF, NSLS-II, etc.

The event will take place at KEK, Tsukuba, Japan, from 15 to 16 December 2022 in a hybrid in-person and online participation format.

Workshop organization committee:

D. Zhou, T. Ishibashi (KEK, Japan)

M. Migliorati (UNIROMA1, Italy)

N. Wang (IHEP, China)

A. Blednykh (BNL, USA)

Video recordings of the presentations:

Impedance mini-workshop 2022
  • Aamna Khan
  • Alexei Blednykh
  • Ali Rajabi
  • Andrii Natochii
  • Demin ZHOU
  • Emanuela carideo
  • Gabriele Bassi
  • Gaku Mitsuka
  • Haruyo Koiso
  • Katsunobu Oide
  • kazuhito ohmi
  • Kodai Matsuoka
  • Lee Carver
  • Makoto Tobiyama
  • Mauro Migliorati
  • Michael Blaskiewicz
  • Mitsuo Kikuchi
  • Na Wang
  • Naoko Iida
  • Naoto Yamamoto
  • Olga Tanaka
  • Prakash Joshi
  • Shalva Bilanishvili
  • Shogo Sakanaka
  • Takashi Yoshimoto
  • Takeshi Nakamura
  • Takuya Ishibashi
  • Viacheslav Kubytskyi
  • Victor Smaluk
  • Yoshihiro Funakoshi
  • Yuan Zhang
  • Yuki Abe
  • Yukiyoshi Ohnishi
  • Yuting Wang
  • Zachary Liptak
  • Thursday, December 15
    • 9:00 AM 12:30 PM
      Thursday morning: Morning session 1

      Join Zoom Meeting
      Meeting ID: 864 7780 3363
      Passcode: 969597

      Conveners: Alexei Blednykh (BNL), Na Wang (IHEP)
      • 9:00 AM
        Opening remark 10m
      • 9:10 AM
        Generalized Nyquist Criterion for Transverse Stability 30m
        Speaker: Dr Michael Blaskiewicz (BNL)
      • 9:40 AM
        Coupled-bunch instability for arbitrary multibunch configurations 30m
        Speaker: Dr Gabriele Bassi (BNL)
      • 10:10 AM
        Impedance modeling and its application to the analysis of the collective effects 30m
        Speaker: Dr Alexei Blednykh (BNL)
      • 10:40 AM
        Break 10m
      • 10:50 AM
        Collimator model & FCC-ee impedance model 30m
        Speaker: Dr Mostafa Behtouei (INFN-LNF)
      • 11:20 AM
        Resistive wall impedance and incoherent tune shift for elliptical multilayer beam pipe 30m
        Speaker: Yuting Wang (IHEP)
    • 3:00 PM 6:10 PM
      Thursday afternoon

      Join Zoom Meeting
      Meeting ID: 864 7780 3363
      Passcode: 969597

      Conveners: Demin ZHOU (KEK), Takuya ISHIBASHI (KEK)
      • 3:00 PM
        Impedance modeling for SuperKEKB 30m

        There is a follow-up correction to the old results from T. Ishibashi. See the skb_imp_follow1 file for further details.

        Speaker: Takuya ISHIBASHI (KEK)
      • 3:30 PM
        -1 mode instability at SuperKEKB LER 30m
        Speaker: Prof. Kazuhito Ohmi (KEK)
      • 4:00 PM
        Development and operation experience of collimators at SuperKEKB 30m
        Speaker: Shinji Terui (KEK)
      • 4:30 PM
        Break 10m
      • 5:10 PM
        Optimization of Belle II background and its impact on collimator settings 30m
        Speaker: Dr Andrii Natochii ( University of Hawaii)
      • 5:40 PM
        Methods and results of bunch length measurements at SuperKEKB (Canceled) 30m
        Speaker: Dr Gaku Mitsuka (KEK)
  • Friday, December 16
    • 9:00 AM 12:30 PM
      Friday morning

      Join Zoom Meeting
      Meeting ID: 849 6032 6327
      Passcode: 554874

      Conveners: Alexei Blednykh (BNL), Na Wang (IHEP)
      • 9:00 AM
        Impedance computations and beam-based measurements: A problem of discrepancy 30m
        Speaker: Dr Victor Smalyuk (BNL)
      • 9:30 AM
        Beam Induced Heating Analysis for the EIC Vacuum Components 30m
        Speaker: Dr Medani Sangroula (BNL)
      • 10:00 AM
        A cross-check of wakefield simulations by GdfidL and ECHO3D codes 30m
        Speaker: Dr Aamna Khan (BNL)
      • 10:30 AM
        Break 10m
      • 10:40 AM
        Coupled-bunch instability driven by resistive wall impedance at SuperKEKB main rings 30m
        Speaker: Demin ZHOU (KEK)
      • 11:10 AM
        Fokker-Planck analysis of transverse collective instabilities in electron storage rings (Canceled) 30m
        Speaker: Dr Ryan Lindberg (ANL)
    • 3:00 PM 6:20 PM
      Friday afternoon

      Join Zoom Meeting
      Meeting ID: 849 6032 6327
      Passcode: 554874

      Convener: Mauro Migliorati (Univ. Roma1)