BGC Collaboration Meeting at GSI

Name: BGC Collaboration Meeting at GSI
Start: 2018-03-19T08:30:00+01:00
End: 2018-03-20T15:50:00+01:00
Location: Hotel Krone

19 Mar 2018, 08:30 → 20 Mar 2018, 15:50 Europe/Zurich

Hotel Krone

69493 Hirschberg, Germany

Raymond Veness (CERN), Rhodri Jones (CERN)

Description

The aims of the meeting are to:

Review the objectives for the LHC fluorescence tests in 2018
Agree on an experimental programme for the Cockcroft 1 test bench (v1)
Agree on an experimental programme for the Cockcroft 2 test bench (v2)
Prepare for an demonstrator
instrument installation during LS2 at CERN (v3)
Review the status and compatibility with the HEL of the LS3 BGC (v4)
Define the strategy to agree on a gas type
Evaluate realistic goals for the performance concerning precision and resolution

___________________________________________________________________________________

Previous collaboration meetings:

Monday 19 March
- Mon 19 Mar
- Tue 20 Mar
- 1
  Introduction and welcome to the review
  - Peter: Welcome to GSI (5 min)
  - Ray: Review of actions from last collaboration meeting, (27/28 June 2017, Cockcroft Institute), and objectives of the workshop (15 min + 10 min)
  Speakers: Peter Forck (GSI), Raymond Veness (CERN)
  
  intro elens march 2018.pdf
  
  intro elens march 2018.pptx
  
  Review of actions.pdf
  
  Review of actions.pptx
- 2
  Cockcroft collaboration
  - Recruitment situation and plans, financial situation, main milestones
  - Foreseen publications in 2018
    (20 min + 10 min)
  Speaker: Carsten Peter Welsch (Cockcroft Institute / University of Liverpool)
- 3
  Status of the Hollow e-lens and BBLR e-beam
  - Update on HEL
  - Residual gas and ion capture
  - Electron trapping and build-up: Clearing electrodes?
  - Update on e-lens parameters and interface
  - Plans for e-lens test stand
    (20 min + 10 min)
  Speaker: Adriana Rossi (CERN)
  
  Status of HEL e-beam - GSI _19March18.pdf
  
  Status of HEL e-beam - GSI _19March18.pptx
- 4
  Expected limitations of the performance of the BGC
  - Which gas? What have we learned, pros and cons of each gas type, vacuum issues for the gas selection (Split with Marton)
  - Limits to precision, resolution, integration time
    (30 min + 10 min)
  Speakers: Peter Forck (GSI), Serban Udrea (GSI Darmstadt)
  
  Udrea_CERN_eLens_GasComp_20180319.pdf
- 10:40
  
  ☕ Coffee Break ☕
- 5
  Experimental programme
  - What we learned in 2017
  - Experimental goals with the existing (v1) and new (v2) set-ups for 2018
  - Associated needs for additional equipment, design, visits etc.
    (30 min + 10 min)
  Speaker: Dr Hao Zhang (University of Liverpool/Cockcroft Institute)
  
  meeting20180318.pdf
  
  meeting20180318.pptx
- 6
  LHC fluorescence measurement
  - Status of the set-up
  - Experimental plans for 2018
  - What we hope/fear to learn, and how this feeds-back to the design
    (20 min + 10 min)
  Speaker: Stefano Mazzoni (CERN)
  
  2018.03.19_CollabMeeting.pdf
  
  2018.03.19_CollabMeeting.pptx
- 7
  Objectives for the LHC-compatible (v3) instrument
  - Project management: Schedule, ECRs for LHC installation, risk analysis for interface equipment
  - What do we need to change or improve: input from gas jet, input from vacuum,
  - Design plans for 2018
    (15 min + 10 min)
  Speaker: Gerhard Schneider (CERN)
  
  Objectives for the LHC-compatible (v3) instrument 2018-03-19.pdf
  
  Objectives for the LHC-compatible (v3) instrument 2018-03-19.pptx
- 12:35
  
  🍽️ Lunch 🍽️
- 8
  Gas-curtain generation, gas expansion
  - High-pressure expansion: What we have learned?
  - How can we optimise the performance while minimising the dimensions?
  - Impact on nozzle to skimmer 1 design?
    (20 min + 10)
  Speaker: Przemyslaw Smakulski (Wroclaw University of Technology)
  
  Nozzle_HighPressure_BGCMeeting_PS.pdf
  
  Nozzle_HighPressure_BGCMeeting_PS.pptx
- 9
  Gas-curtain generation, density and pumping optimisation
  - Compare model to measured pressures/densities of v1 model
  - Show expected model for v2 system
  - Optimisation and simplification of the skimmers
  - Putting both together: Realistic expectations for the final gas jet, absolute signal and signal/noise
    (20 min + 10 min)
  Speaker: Marton Ady (CERN)
  
  ady_darmstadt.pdf
  
  ady_darmstadt.pptx
  
  ady_darmstadt_shorter.pdf
  
  ady_darmstadt_shorter.pptx
- 15:30
  
  ☕ Coffee Break ☕
- 10
  Optical Beam Diagnostics
  - Introduction and Status Report for the Year 2017
    (20 min + 10 min)
  Speaker: Jochen Wieser (GSI)
  
  Heidelberg_2018-short.pdf
  
  Heidelberg_2018-short.ppt
- 11
  Optical system
  - What we have learned in 2017, objectives for 2018?
  - Blackening of chambers? What would be required to set-up an LHC-compatible instrument?
    (20 min + 10 min)
  Speaker: Serban Udrea (GSI Darmstadt)
  
  Udrea_CERN_eLens_SetupStatus_20180319.pdf
- 12
  Nozzle, Skimmer Update and v3 design
  - Update on Nozzles and skimmers
  - Mechanical designs for v2 at Cockcroft
  - Introduction to v3 LHC design
    (15 min + 5 min)
  Speaker: Tom Dodington (CERN)
  
  BGC Review GSI.pdf
  
  BGC Review GSI.pptx
- 13
  
  Discussion
Tuesday 20 March
- Mon 19 Mar
- Tue 20 Mar
- 14
  Wrap-up
  - Draft meeting minutes
  - Decisions
  - Actions
  Speakers: Peter Forck (GSI), Raymond Veness (CERN)
  
  Wrap-up.pdf
  
  Wrap-up.pptx
- 11:00
  
  🚌 Transport to GSI 🚌
- 15
  
  Visit to GSI