WP5.2 - TCLPX/TCTPXH Prototypes Production Follow-up

Friday 16 Dec 2022, 14:00 → 14:50 Europe/Zurich

zoom (CERN)

MINUTE 60:

TCC:

• Financial issues between CERN and Julabo : solved, equipment will arrive max 3^rd week of January 
• Waiting for Jean-Marc updates on soft and to get back the datas from TCSPM LS2
• PT100 connectors installed – Régis ordered the connectors

BPM flanges:

• Test of connectors only are all good, so the problem does not come from connector before welding
• The welding process from MME is the same as usual and it is the thinner parameters used
• Hypothesis: local heat can create a leak on the connectors 
• After discussion with S. Sgobba, tomography will be performed on the connectors. A connector that is leaking after welding will be analysed 
• Emilien said that we can extract the connector without damaging the flange with electro-erosion. If we want to analyse the welding, the flange would be destroyed
• Ositrade order passed
• Sub D-9 connector to be ordered by Jerome

RF fingers:

• Hybrid version between TCS and TCSPM: longer than TCSPM to avoid stress, additional screw to avoid stress on welding + lyre for flexibility (design TCSPM with TCS length)
• Update: adding shorter screws et deeper threads 
• Emilien is proposing mid-March (production ongoing) – Romain is looking for firms to do these fingers 
• Rhodium is stayed on the part (chemical analysis attached to the INDICO)
• Adjust length of the RF fingers testbench 
• Warning about the limitor and get the adequate space for fingers 
• Weld the testbench support to limit mechanical play 

Design:

• RF fingers: done 
• DN300 flanges with pinch-off: waiting the CDD from VSC 
• Jaw flatness measurement tool -> give the CDD to Dylan for the tooling list
• TCLP, TCSPM, TCTPM folders: not started 
• Post-proto modifications regarding Dylan’s Excel: ongoing for jaws, done for mechanical table, almost finished for feet
• Taller feet for IP1: done 
• Switch integration: drawing to be done
• TCTPXV review and modifications for serie: Emanuel working on it 
• Mechanical table procedure check: ongoing 
• Gabarit for cooling pipes production: ongoing, wait for comments 
• Copper wedges for jaws posing during vacuum test (STI)
• Check if we can use the same jaw design for TCTPXH as TCLPX (1 week) 
• Taperings drawing done
• Drawing folders for Brazil in-kind (CNPEM)
• Mock-up integration 

Assembly:

• TCLPX jaws under metrology to perform flatness measurements post-bakeout 
• TCTPXH jaws disassembled and copper parts under metrology control for additional measurements
• Vacuum vessel reception 16^th of January : Assembly of components before (indexing plates, Screen rails, mechanical tables,…) and Romain need to annotate et check the screws references -> meeting to check the procedure before assembly 

Procurement:

• Inermet blocks production ongoing, arriving at CERN mid-February
• CuCr1Zr taperings ordered to DEM 
• Romain is checking the stocks for the TCSPM copper parts 
• Vireur received 

Production MME: 

• Tanks under control with new references
• RF screen rail electropolished, metrology done
• LHCTCLPX__0142 transition support ongoing
• RF fingers production 
• 2 references for tank missing
• RF collar modification

Production STI: 

• Jaw flatness measurement tool: ongoing
• Levelling parts: finished
• Remaining feets components: ongoing
• Adaptation for vireur: finished
• Transitions and pinch-off: not started
• IPN for tank assembly: assembly to be done
• TCC rack: done
• Lifting ears: not started

Update on planning: 

 

Update for the serie:

• Having a defined and precise mechanical play to let the RF fingers sliding properly
• Give more thickness to the tanks extremities to avoid deformation