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BGC Collaboration Meeting at the Cockcroft Institute

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University of Liverpool (Other Institutes)

University of Liverpool

Other Institutes
Carsten Peter Welsch (Cockcroft Institute / University of Liverpool), Raymond Veness (CERN)
Description

The aims of the meeting are to:

  • Review status of “must haves” of the BGC V3 Stage 1

  • Summarise the knowhow gained at Cockcroft, GSI and with the LHC fluorescence experiment since the last meeting at CERN November 2018. Identify the open issues with this knowledge gained with the aim of an operational instrument.

  • Review the administration progress (Planning, ECR done and in progress, Infrastructure requests, project founding, responsibility share boundaries)

  • Update on the status, requirements and compatibility with the HEL test stand including expected light yields for HEL test stand and HEL of the LS3 BGC

  • Agree on an experimental programme on the Cockcroft 2 test bench (V2) for 2019 end half to start 2020

  • Skimmer and Nozzles: Define optimum dimensions for the V3

  • Update on pumping and gauges and V3 control system

  • Evaluate realistic goals for the performance concerning precision and resolution

  • Programme and instrument requirements for a residual gas fluorescence test setup for Run 3

___________________________________________________________________________________

Previous collaboration meetings:

  • Thursday 13 June
    • 09:00 → 09:45
      Welcome to the Review
      • 09:00
        Welcome to Cockcroft 20m

        i. Project Summary
        ii. Status of Collaboration
        iii. Summary of future goals for the collaboration
        iv. Recruitment situation and plans, financial situation, main milestones
        v. Payments for V3 model of stages 1 and 2 including designers

        Speaker: Carsten Peter Welsch (Cockcroft Institute / University of Liverpool)
      • 09:25
        Review of previous workshop and objectives 20m

        i. Review of actions from last meeting
        ii. Objectives for the workshop
        iii. Milestones for the project at CERN

        Speaker: Raymond Veness (CERN)
        Introduction talk.pdf
        Introduction talk.pptx
    • 09:45 → 11:00
      Results from 2018/19

      Summary of know-how gained at Cockcroft, GSI and with LHC fluorescence in 2018/19 with the resulting challenges

      • 09:45
        2018/2019 Experimental results from Cockcroft (20min + 5min) 25m

        i. Neon, Argon and Nitrogen gas jet formation:

        • Measured density
        • Measured dimensions
        ii. Integration times for different gases:
        • Comparison of measured vs predicted
        • Estimation of integration time to work as an overlap instrument
        • Estimation of integration time to work as a profile monitort
        iii. Optimisations performed:
        • Distances between skimmers and nozzles
        • Diameters of the nozzle
        • Pumping modifications
        iv. Pressure profile across chambers with electron gun on/off and gas jet on/off
        v. Optimum distance for nozzle/1st skimmer, using theory.

        Speakers: Amir Salehilashkajani (Liverpool University), Dr Hao Zhang (University of Liverpool/Cockcroft Institute)
        Cockcroft.pdf
        Cockcroft.pptx
      • 10:15
        Update of experimental results from LHC fluorescence measurements (15min + 5min) 20m

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

        Speaker: Stefano Mazzoni (CERN)
        2019.06.13_CollaborationMeeting.pdf
        2019.06.13_CollaborationMeeting.pptx
      • 10:40
        Experimental results and developments from GSI in 2018 (15min + 5min) 20m

        i. Measurements with Argon
        ii. Up-date table of gas yields comparison

        Speaker: Peter Forck (GSI)
        Forck meeting june2019.pdf
        Forck meeting june2019.pptx
    • 11:00 → 11:20
      ☕ Coffee Break ☕ 20m
    • 11:20 → 12:45
      BGC applications and collaborations
      • 11:20
        Hollow Electron Lens update (20min + 5min) 25m

        i. Schedule for the HEL test stand
        ii. HEL test stand parameters
        iii. Update on HEL and parameters, including e-beam diameter
        iv. Estimation possible on integration time

        Speaker: Adriana Rossi (CERN)
        Rossi_BGC_2019_meeting.pdf
        Rossi_BGC_2019_meeting.pptx
      • 11:50
        Summary of other jet experiments and non-invasive profile monitoring (15min + 5min) 20m
        Speaker: Tom Dodington (CERN)
        BGC_Collab_2019.pdf
        BGC_Collab_2019.pptx
      • 12:15
        BGV Instrument and integration of gas jet technology (15min + 5min) 20m

        i. Intro to the BGV working principle
        ii. How gas jet technology could help – required profile and density of gas jet
        iii. Next steps for development, verification.

        Speaker: Robert Kieffer (University of London (GB))
        2019_06_BGV_GasJetTarget.pdf
        2019_06_BGV_GasJetTarget.pptx
    • 12:45 → 14:15
      🍽️ Lunch 🍽️ 1h 30m
    • 14:15 → 15:45
      Requirements for the BGC instrument

      For both the stage 1 & full demonstrator installations, including planning and vacuum.

    • 15:45 → 16:10
      ☕ Coffee Break ☕ 25m
    • 16:30 → 18:00
      Project program for 2019/20
      • 16:30
        Nitrogen as a gas (15min + 5) 20m

        i. Possible interest in using a N2 gas jet
        ii. Possible experiments in 2019

        Speaker: Raymond Veness (CERN)
        N2 as a gas jet.pdf
        N2 as a gas jet.pptx
      • 16:55
        2019/20 Experimental programme (20min + 10min) 30m
        Speaker: Dr Hao Zhang (University of Liverpool/Cockcroft Institute)
        2019-2020Plan.pdf
        2019-2020Plan.pptx
      • 17:30
        Procurement and production of BGC parts by cockcroft Institute (15min + 5min) 20m
        Speaker: Dr Hao Zhang (University of Liverpool/Cockcroft Institute)
        procurement.pdf
        procurement.pptx
    • 19:30 → 21:30
      Dinner 2h
  • Friday 14 June
    • 09:00 → 09:30
      Wrap-up (20min + 10min) 30m

      Actions from the review

      Speaker: Raymond Veness (CERN)
      wrap-up-bgc.pdf
      wrap-up-bgc.pptx
    • 09:30 → 09:45
      Close-out 15m
      Speaker: Carsten Peter Welsch (Cockcroft Institute / University of Liverpool)
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