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BGC Collaboration Meeting at CERN

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864/1-B04 (CERN)

864/1-B04

CERN

22
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Raymond Veness (CERN), Rhodri Jones (CERN)
Description

The aims of the meeting are to:

  • Identify all requirements for a fully working demonstrator instrument in the LHC tunnel by March 2020 (V3)
  • Identify “must haves” installation for LS2,
  • Summarise the know-how gained at Cockcroft, GSI and with the LHC fluorescence experiment. Identify the open issues with this knowledge gained with the aim of an operational instrument in LS2.
  • Review the administration progress (Planning, ECR done and in progress, Infrastructure requests, project founding, responsibility share boundaries)
  • Up-date on the status, requirements and compatibility with the HEL of the LS3 BGC (V4)
  • Agree on an experimental programme on the Crockcroft 2 test bench (V2) for 2019
  • Review the status and compatibility with the HEL of the LS3 BGC (V4)
  • Gas type: Neon is baseline. Summarise reasons for that choice. What were the impacts if change to Nitrogen or Argon.
  • Evaluate realistic goals for the performance concerning precision and resolution
  • Arguments to keep and modify the fluorescence test set-up for Run 3

___________________________________________________________________________________

Previous collaboration meetings:

  • Tuesday 27 November
    • 08:45 → 08:50
      Welcome to CERN 5m
      Speaker: Rhodri Jones (CERN)
    • 08:50 → 09:05
      Review of actions from last meeting and objectives of the workshop 15m
      Speaker: Raymond Veness (CERN)
      CERN-meeting-1118-intro-veness.pdf
      CERN-meeting-1118-intro-veness.pptx
    • 09:10 → 09:30
      Future prospects for the BGC instrument 20m
      Speaker: Carsten Peter Welsch (Cockcroft Institute / University of Liverpool)
    • 09:35 → 10:05
      Experimental results in 2018 from Cockcroft (20min + 10min) 30m

      i. Neon and Nitrogen gas jet formation
      ii. Integration times
      iii. Nozzle distances, Pressures of Neon
      iv. Optimisations performed
      v. Pressure profile across chambers with electron gun on/off and gas jet on/off

      Speakers: Amir Salehilashkajani (Liverpool University), Dr Hao Zhang (University of Liverpool/Cockcroft Institute)
      meeting20181127_v1.pdf
      meeting20181127_v1.pptx
      Pressure Details20180920_before_special_gasket.xlsx
      Pressure details after adding special gaskets.xlsx
    • 10:10 → 10:30
      Experimental results in 2018 from LHC fluorescence measurements (15min + 5min) 20m

      i. Experiment performed
      ii. Data obtained
      iii. Obstacles (synchrotron radiation, scattered particles)

      Speaker: Stefano Mazzoni (CERN)
      2018.11.27_CollabMeeting.pdf
      2018.11.27_CollabMeeting.pptx
    • 10:30 → 10:50
      ☕ Coffee Break ☕ 20m
    • 10:50 → 11:10
      Experimental results and developments from GSI in 2018 (15min + 5min) 20m

      i. Update on Argon
      ii. Experiment in Munich
      iii. Results and Discussion

      Speaker: Serban Udrea (GSI Darmstadt)
      Udrea_CERN_eLens_LatestDevelopments_20181127.pdf
    • 11:15 → 11:35
      Synchrotron Radiation (15min + 5min) 20m

      i. Source and Profile
      ii. Synchrotron light stopper
      iii. Blackening (calculation aspects)

      Speakers: Johanna Glutting (Fachhochschule Kaiserslautern University of Applied Sciences (D), Marton Ady (CERN)
      BGC Collaboration Meeting Syncrotron Radiation.pdf
      BGC Collaboration Meeting Syncrotron Radiation.pptx
    • 11:40 → 12:00
      Nuclear scattered particles in camera electronics (15min + 5min) 20m

      i. Compare fluorescence measurements with expected gas jet
      ii. Estimate creation of background in camera

      Speaker: Stefano Mazzoni (CERN)
    • 12:00 → 13:30
      🍽️ Lunch 🍽️ 1h 30m

      Cafeteria 774 backroom

    • 13:30 → 13:55
      Cockcroft collaboration (20min + 5min) 25m

      i. Recruitment situation and plans, financial situation, main milestones
      ii. Foreseen publications in 2019

      Speaker: Carsten Peter Welsch (Cockcroft Institute / University of Liverpool)
    • 14:00 → 14:25
      Update on of the Hollow e-lens and e-beam (20min + 5min) 25m

      i. Update on HEL and electron beam diameter
      ii. Clearing electrodes
      iii. Update on e-lens parameters and interface
      iv. Impact of nuclear scattered particles in E-lens?
      v. Light sources in the E-lens?

      Speaker: Adriana Rossi (CERN)
      Rossi_BGC_2018_meeting.pdf
      Rossi_BGC_2018_meeting.pptx
    • 14:30 → 14:55
      Expected limitations of the performance of the BGC (20min + 5min) 25m

      i. Update on limits to precision, resolution, integration time
      ii. Can we confirm Neon as gas of choice

      Speaker: Peter Forck (GSI)
      Udrea_CERN_eLens_PerformanceLimits_20181127.pdf
    • 15:00 → 15:25
      Mechanical design of BGC (20min + 5min) 25m

      i. As per ECR (Tom)
      ii. On-going minimisation work (Johanna)
      iii. Nozzle chamber simplification
      iv. Technical issues of blackening

      Speakers: Johanna Glutting (Fachhochschule Kaiserslautern University of Applied Sciences (D), Tom Dodington (CERN)
      BGC Collaboration Meeting Ongoing Design Work.pdf
      BGC Collaboration Meeting Ongoing Design Work.pptx
    • 15:30 → 16:00
      Vacuum design (20min + 10 min) 30m

      i. Calculations performed
      ii. Pumping requirements and proposals
      iii. Control system
      iv. Cabling

      Speakers: Eric Page (CERN), Giuseppe Bregliozzi (CERN), Marton Ady (CERN)
      bgc_integration_variants_cern_review_meeting.pdf
      bgc_integration_variants_cern_review_meeting.pptx
    • 16:00 → 16:20
      ☕ Coffee Break ☕ 20m
    • 16:25 → 16:45
      Experimental programme 2019 (15min + 5min) 20m

      i. Experimental goals with the existing (v1) and new (v2) set-ups for 2019
      ii. Vacuum qualification (Pumping speeds, blackening)

      Speaker: Dr Hao Zhang (University of Liverpool/Cockcroft Institute)
      2019Plan.pdf
      2019Plan.pptx
    • 19:40 → 21:40
      Dinner 2h
  • Wednesday 28 November
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