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42nd Impedance Working Group meeting

Wednesday 1 Jul 2020, 15:30 → 17:30 Europe/Zurich

CERN

CERN

- 15:30 → 15:45
  
  Review of last meeting minutes 15m
  
  Speakers: Benoit Salvant (CERN), Christine Vollinger (CERN)
  
  41st_IWG_12_June_2020_OB_ILG_BS_CV.pdf
- 15:45 → 16:00
  
  Consistent list of high impedance bypasses that may remain in the machine after repairs 15m
  
  Speaker: Christine Vollinger (CERN)
  
  RecapPSBBypasses.pdf
  
  RecapPSBBypasses.pptx
- 16:00 → 16:15
  
  Impact of RF bypass on the beam coupling impedance of insulated flanges 15m
  
  Speaker: Carlo Zannini (CERN)
  
  PSB_RFbypass_IWG_CZ.pdf
  
  PSB_RFbypass_IWG_CZ.pptx
- 16:15 → 16:30
  
  Measurements of HL-LHC collimators 15m
  
  Speakers: Adnan Kurtulus (ETH Zurich (CH)), Nicolo Biancacci (CERN)
  
  Collimator measurements-IWG-AK-NB.pdf
  
  Collimator measurements-IWG-AK-NB.pptx
- 16:30 → 16:45
  
  Crab cavity HOM shunt impedance thresholds and tolerance 15m
  
  Speakers: Benoit Salvant (CERN), Nicolo Biancacci (CERN)
  
  crab recommendation.docx
  
  crab recommendation.pdf
  
  Engineering_specification_dressed_cavities.v2.55.pdf
  
  Summary_recommendation_HOM_Crabs_01072020_IWG_NB.pdf
  
  Summary_recommendation_HOM_Crabs_01072020_IWG_NB.pptx
- 16:45 → 17:05
  
  AoB 20m
  
  QA for impedance shields
  HL weld issue
  Crystals and shielded valve
  LHCb Velo comment
  
  Speakers: Benoit Salvant (CERN), Christine Vollinger (CERN)
  
  Comment from the Impedance WG - LHCb Velo.docx
  
  Comment from the Impedance WG - LHCb Velo.pdf