BA6 – crab cavity activities in EYETS G.Vandoni

System architecture in SPS BA6 – surface area RF power amplifiers IOT Warm Cryogenics Racks, utilities PA6 - shaft RF power coaxials Warm Cryo pipework Cables TA6 – alcove & access tunnel Cryo distribution line CC SPS test stand See next slide Cold-box & Valve box New handling equipment

Crab cavity SPS test stand Helium pumps Valve-box2 Service module RF power, loads & circulators Vacuum sectorization valve Vacuum sectorization valve Y-chamber Transfer table Transport lane Cryo-module All this, after YETS2018. Y-chamber

Objectives of EYETS BA6 – surface area PA6 - shaft Supports for heavy stuff Warm Cryo pipework Cables RF power coaxials PA6 - shaft RF power coaxials Warm Cryo pipework Cables TA6 – alcove & access tunnel Cryo distribution line CC SPS test stand Cables New vacuum sector RF power coaxials Cryo distribution line Cables New handling equipment Floor preparation RF power coaxials New handling equipment

Co-activity

Co-activity – Dec / Jan

Co-activity – Feb / Mar

Main activities What Start Finish Duration Comments Magnet campaign 9/1 13/1 1 wk No obstruction of transport lane Scaffolding, crab zone 5/1 6/1 2 days Removal 28/2 Scaffolding, LSS6 16/1 20/1 Removal 1/3 Cabling 17/1 13/3 8 weeks BA6, shaft, TA6, tunnel. Not compatible with welding (shaft) Cryo line installation 23/1 28/2 5 weeks Pressure test at night, 27/2 Handling equipment, TA6 alcove 20/12 5 days Handling equipment, crab zone 7/3 15/3 10 days Zone free from anything, only EN/HE Cryo warm pipework, BA6 27/1 3 weeks Pipe segments installation, welding Cryo warm pipework, shaft 15/12 “

Zones Crab zone LSS6 tunnel TA6 tunnel TA6 alcove

Scaffolding Scaffold 2 Scaffold 1 Scaffold 2 Scaffold 2 Platform

Cryogenic distribution line (“the QRL”)

Open issues I will define better the sequence in each zone (for example in BA6 surface bdg.) with your help. Can EN/EL deal with removal of the cable tray and yellow support from the crab cavity zone and all along the tunnel? Are INSTALLATION of scaffold in the tunnel and cabling campaign in the tunnel compatible, can they be done at the same time? Can TE/CRG work (a bit more) in parallel on the warm cryogenic pipework in BA6 and shaft? This activity determines the start of the cabling campaign.