1. Integration issues at IHEP
Xiaoping Jing, Xiaoyan Ma,
Mingyi Dong

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

3. 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

4. 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

5. 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 )

6. 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

7. 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.

8. 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

9. 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

10. 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

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

12. 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

13. 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?

14. 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!