BGC updates Giannis Papazoglou August 2020 CERN Geneva

BGC updates Giannis Papazoglou August 2020, CERN, Geneva 3/7/2020 2

Phase 1 updates

Phase 1 updates Mechanical works are completed last week • BGC is connected to the LHC vacuum tube! • Pumping down has started. • Bakeout is scheduled for next week but we might have a delay. •

Phase 2 updates Drawings are finalized now: • We should sign today or Monday • Hao can send for quotas • We need to check if approval from VSC is required as well We have verbal approval so far • Bellows have been selected moving with design finalization and ordering soon. •

Phase 2 updates • Gas line installation is shifted probably for week 40 or 41. • Fibre rack is installed: • Fibre works foreseen for next week. • Fixing the rack on the floor end of September (after drilling is scheduled).

Other updates We have all the TMPs now: • Arranging asset codes to be able to track them. • Arranging shipping to CI soon? • We are manufacturing a second LBD with the welded part for CI. • Should be ready next week. • CERN will make the drawing for the mounting addaptor, we need to figure out the manufacturing. •

Other topics • We need to discuss what is the gas jet profile expected: • Impacts the viewport design if we are looking for a constant pressure or pulsing. • We are trying to push the relocation of the BGI gas injection system to the BGC before October.