Integration issues at IHEP Xiaoping Jing, Xiaoyan Ma, Mingyi Dong 2017.09.15

Outline Extraction tooling for inner MDC Carbon fiber cylinder mounting The compatibility of the MDC/CGEM extraction/ insertion tooling Interfaces Water cooling problems

Extraction tooling for inner MDC Long rail and supporting legs Long rail Supporting legs #1 #2 #3 #4 #5 East platform MDC 3.82m Tooling :Long rail+ 5 supporting legs (2 in west side, 3 in east side) Sliding inner MDC on the rail for extraction Span of working area: 3.82m ID of inner MDC:118mm Main design parameters of long rail

Carbon fiber cylinder mounting The new cylinder will be installed after inner MDC removed East side West side Thickness: 0.6mm (0.5mm carbon fiber +0.1mm Al film) Clearance between cylinder and CGEM: 1.9mm Clearance between cylinder and MDC: 0.3mm for inserting and gluing (If 0.5mm is not successfully made, the thickness will be added and the clearance will be reduced.) ID of MDC (step #1): R183.5mm Cylinder Outer R:183.2mm Cylinder Inner R:182.6mm CGEM Rmax: R180.7mm Load test and leak checking will be finished in the manufacturer

glue New west ring east 0.1~0.3mm clearance Glue the separation cylinder to the new west ring(~1.5Kg): in manufacturer Insert the cylinder with west ring from east side (slide on the rail using tooling )

Fix the new west ring with 8 special screws Fixed west flange glue New west ring East Fix the new west ring with 8 special screws Gluing the cylinder with first step ring of MDC in east side New east flange Gluing and sealing the west side Insert CGEM detector together with new east flange and supporting flange from east side Mount the east flange Fix the supporting flange glue

The compatibility of the MDC/CGEM extraction/insertion tooling The CGEM detector will be installed once the inner MDC and fixture have been removed and the new separation cylinder is already in place. The long rail and the 5 supporting legs will be used both for the MDC removal and for the CGEM insertion. They will be left in place after the inner chamber removal to host the inserting carriage for CGEM.

Interfaces Supporting flange for CGEM Drawing had been checked and modified, no interference now M4 screw hole 4-M5 screw holes in the new east flange and west flange 4-Ø6 though holes in supporting flange M4 screw hole M4 screw hole M6 screw hole These slots keep the same size and leave the same space with the previous design Slots (had been added in the new version) for hiding cable ties

CGEM cables supporter 1278 1037 1157.5 1329 #3 Cutting the half of tube, CGEM Cable supporter has no interference with the supporting leg #3

Consideration of sharing the cooling system of the EMC with CGEM Requirements of CGEM water cooling were raised in last workshop inlet temperature: 18℃ pressure drop: 2 bar Flow rate: 5 l/min There are cooling systems for the EMC and magnets Share the cooling system of the EMC with CGEM existing bypass connectors convenient maintenance low cost

Cooling system for the EMC (1) Operating parameter inlet temperature: 21℃, Inlet pressure: 2.2 bar, outlet pressure: 1bar Flow rate: 92 l/min

Cooling system for the EMC (2) Connectors at the inlet and outlet pipes The system has the capability of decreasing the water T to 18℃ In order to meet the requirements of CGEM cooling, only a booster pump is needed to increase the pressure to 3bar in the bypass water pipe

Other issues of the cooling system If a booster pump is used, another pump will be used as a backup Inlet pressure, outlet pressure , water temperature and the flow rate monitoring Water pipes routing The pipes connected to the CGEM detector come out along with the signal/HV cables? Or is it possible along with the beam pipe?

Summary Extraction and insertion tooling has been well designed CF inner cylinder and new ring are being manufactured Good cooperation in the integration issues, such as the insertion tooling, operating procedure, the cooling system and the cable routing Thanks!