PIMS prototype construction experience

Tuesday, November 16, 2010 G. Favre EN/MME 1

PIMS prototype construction experience

Details of the construction procedure elaborated by CERN for the PIMS prototype


Construction sequence for standard rings type 3


Table 1: Construction sequence for standard rings type 3 (1/2)

pieces p. cav.

drawing number sequence responsibility/task

sub parts

4 SPLACPMT0001 Tuner port machining (this part integrates a backing support designed to receive the welding root)

IPJ - task 1

4 SPLACPMB0037 Flange rough machining, stabilization, final machining

IPJ - task 1

4 SPLACPMT0002 Vacuum brazing IPJ - task 1

main parts

4 SPLACPMT0012 1. Ring rough machining (+1 mm) IPJ - task 1

2. Milling of port apertures according to the requirements by FZJ

IPJ - task 1

3. Cleaning IPJ - task 1

4. Packing and transport of rings and port tubes to FZJ

IPJ - task 1

4 5. Welding of port tubes FZJ - task 2

6. Leak test of ports FZJ - task 2

7. Packing and transport to IPJ FZJ/IPJ - task 2


+ 2 mm

+ 2 mm

- 2 mm

Rough machining: oversize + 1 mm


pieces p. cav.

drawing number sequence responsibility/task

main parts

SPLACPMB0018 8. Port backing support machining IPJ - task 3

9. X-ray testing IPJ – task 3

10. Leak test of ports IPJ - task 3

SPLACPMB0018 11. Ring final machining IPJ - task 3


13. Metrological report IPJ - task 3

14. Packing and transport to CERN IPJ - task 3

Table 1: Construction sequence for standard rings type 3 (2/2)


Construction sequence for pick-up rings


Table 2: Construction sequence for pick-up rings (1/2)

pieces p. cav.

drawing number sequence responsibility/tasks

sub parts

2 SPLACPMT0001 Tuner port machining (this part integrates a backing support designed to receive the welding root)

IPJ - task 1

2 SPLACPMB0037 Flange rough machining, stabilization, final machining

IPJ - task 1

2 SPLACPMT0002 Vacuum brazing IPJ - task 1

2 SPLACPMT0003 Pick-up port machining (this part integrates a backing support designed to receive the welding root)

IPJ - task 1

2 SPLACPMB0038 flange rough machining, stabilisation, fine machining

IPJ - task 1

2 SPLACPMT0002, SPLACPMT0004

Vacuum brazing IPJ - task 1


Table 2: Construction sequence for pick-up rings (2/2)

pieces p. cav.

drawing number

sequence responsibility/tasks

main parts

2 1. Ring rough machining (+1 mm) IPJ - task 1

SPLACPMT0013 2. Milling of port apertures according to the requirements of FZJ

IPJ - task 1


4. Packing and transport of rings and port tubes to FZJ

IPJ - task 1

2 5. Welding of port tubes FZJ - task 2

6. Leak test of ports FZJ - task 2

7. Packing and transport to IPJ FZJ/IPJ - task 2

SPLACPMB0020 8. Port backing support machining IPJ - task 3

9. X-ray testing IPJ – task 3

10. Leak test of ports IPJ - task 3



13. Metrological report (the ring shall be unclamped to carry out the measurements)

IPJ - task 3

14. Packing and transport to CERN IPJ - task 3


Construction sequence of central ring type 4


Table 3: Construction sequence of central ring type 4

pieces p. cav.

drawing number sequence responsibility

Sub parts

1 SPLACPMB0025 square flange: rough machining, stabilization, final machining

IPJ - task 1

1 SPLACPMB0026 tube machining IPJ - task 1

1 SPLACPMB0027 pick-up tube machining IPJ - task 1

1 SPLACPMB0028 fitting elbows machining IPJ - task 1

1 SPLACPMB0029 nipples machining IPJ - task 1

1 SPLACPMB0037 flange rough machining, stabilisation, final machining

IPJ - task 1

1 SPLACPMB0038 flange rough machining, stabilisation, final machining

IPJ - task 1


Table 3: Construction sequence of central ring type 4

pieces p. cav.


Main parts

1 SPLACPMT0014 1. Ring rough machining (+1 mm) IPJ - task 1


3. Stabilisation (heat treatment) IPJ - task 1

SPLACPMT0015 4. Ring rough machining (+0.5 mm) IPJ - task 1


6. Stabilisation (heat treatment) IPJ - task 1



9. Metrology (the ring shall be unclamped to carry out the measurements)

IPJ - task 1

SPLACPMB0017 10. Brazing of ports, fitting elbows, nipples and square flange

IPJ - task 1

11. Leak test IPJ – task 1

12. Water pressure test IPJ – task 1

13. Metrology IPJ – task 1

11. Packing and Transport to CERN IPJ - task 3


Construction sequence of central disc type 1, type 3 and & disc type 3


Table 4: Construction sequence of central disc type 1, type 3 and & disc type 3

pieces p. cav.


2 1. Disc rough machining including coupling slots (all +1 mm)

IPJ - task 1

2. Drilling of cooling circuits IPJ - task 1

3. Installation of temporary threaded plugs to protect cooling circuits during final machining and cleaning

IPJ - task 1

4. Final machining IPJ - task 1

5. Cleaning IPJ – task 1

6. Leak test of cooling circuits IPJ – task 1

7. Pressure test of the cooling circuits IPJ – task 1

8. Metrology control (the disc shall be unclamped to carry out the measurements)

IPJ - task 1

9. Packing and Transport to CERN IPJ - task 3

PIMS prototype construction experience

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