Welcome to CERN

• Rhodri Jones (CERN)

Room: 864/1-B04

Review of actions from last meeting and objectives of the workshop

• Raymond Veness (CERN)

Room: 864/1-B04

Future prospects for the BGC instrument

• Carsten Peter Welsch (Cockcroft Institute / University of Liverpool)

Room: 864/1-B04

Experimental results in 2018 from Cockcroft (20min + 10min)

• Hao Zhang (University of Liverpool/Cockcroft Institute)
• Amir Salehilashkajani (Liverpool University)

Room: 864/1-B04 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

Experimental results in 2018 from LHC fluorescence measurements (15min + 5min)

• Stefano Mazzoni (CERN)

Room: 864/1-B04 i. Experiment performed ii. Data obtained iii. Obstacles (synchrotron radiation, scattered particles)

Experimental results and developments from GSI in 2018 (15min + 5min)

• Serban Udrea (GSI Darmstadt)

Room: 864/1-B04 i. Update on Argon ii. Experiment in Munich iii. Results and Discussion

Synchrotron Radiation (15min + 5min)

• Johanna Glutting (Fachhochschule Kaiserslautern University of Applied Sciences (D)
• Marton Ady (CERN)

Room: 864/1-B04 i. Source and Profile ii. Synchrotron light stopper iii. Blackening (calculation aspects)

Nuclear scattered particles in camera electronics (15min + 5min)

• Stefano Mazzoni (CERN)

Room: 864/1-B04 i. Compare fluorescence measurements with expected gas jet ii. Estimate creation of background in camera

Cockcroft collaboration (20min + 5min)

• Carsten Peter Welsch (Cockcroft Institute / University of Liverpool)

Room: 864/1-B04 i. Recruitment situation and plans, financial situation, main milestones ii. Foreseen publications in 2019

Update on of the Hollow e-lens and e-beam (20min + 5min)

• Adriana Rossi (CERN)

Room: 864/1-B04 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?

Expected limitations of the performance of the BGC (20min + 5min)

• Peter Forck (GSI)

Room: 864/1-B04 i. Update on limits to precision, resolution, integration time ii. Can we confirm Neon as gas of choice

Mechanical design of BGC (20min + 5min)

• Johanna Glutting (Fachhochschule Kaiserslautern University of Applied Sciences (D)
• Tom Dodington (CERN)

Room: 864/1-B04 i. As per ECR (Tom) ii. On-going minimisation work (Johanna) iii. Nozzle chamber simplification iv. Technical issues of blackening

Vacuum design (20min + 10 min)

• Eric Page (CERN)
• Marton Ady (CERN)
• Giuseppe Bregliozzi (CERN)

Room: 864/1-B04 i. Calculations performed ii. Pumping requirements and proposals iii. Control system iv. Cabling

Experimental programme 2019 (15min + 5min)

• Hao Zhang (University of Liverpool/Cockcroft Institute)

Room: 864/1-B04 i. Experimental goals with the existing (v1) and new (v2) set-ups for 2019 ii. Vacuum qualification (Pumping speeds, blackening)

Dinner Room: 864/1-B04

Nozzle expansion (10min + 5min)

• Barbara Kedzierska (Warsaw University of Technology (PL))

Room: 864/1-B04 i. High pressure expansion ii. Nozzle options

Blackening of the Interaction Chamber (10min + 5min)

• Johanna Glutting (Fachhochschule Kaiserslautern University of Applied Sciences (D)

Room: 864/1-B04

Summary of Gas Jets

• Tom Dodington (CERN)

Room: 864/1-B04

Planning (15min + 5 min)

• Gerhard Schneider (CERN)

Room: 864/1-B04 i. Milestones ii. To-do list (infrastructure requirements, cabling, gas piping) iii. Engineering change requests with agreement on impedance, safety, aperture, vacuum

Project Status

• Raymond Veness (CERN)

Room: 864/1-B04 i. Funding ii. Boundaries between partners iii. Collaboration deliveries

Wrap-Up

• Raymond Veness (CERN)

Room: 864/1-B04 i. Identify show-stoppers ii. Agree priorities iii. Review summary