Assembly Hall in Hybrid-A’ and ILD

2014/9/6

Yasuhiro Sugimoto

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Assembly hall for ILD

• Five pieces of ILD yoke (YE-, YB-, YB0, YB+, YE+) are assembled in the surface assembly hall (AH)

• Each yoke is assembled on the floor, and moved to a platform in AH by air-pads, and lowered to the underground detector hall after installation of some sub-detectors and magnetic field mapping

• Muon detectors, solenoid coil, and barrel/endcap calorimeters are installed on surface (Trackers are installed underground)

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ILD requirement for AH• Space

– ILD needs assembly space for 5 yoke rings and solenoid – If we assume 25mx10m space for each of YE± and YB±, and

25x20m for YB0 and solenoid, respectively, 25mx80m space is necessary

• Crane– A 250 ton crane for yoke assembly and an 80 ton crane for

solenoid/detector assembly and installation are needed– ~4000 ton gantry crane for detector lowering

• Hall height– 22.6m from the floor to crane rail, 6m from crane rail to ceiling,

plus alpha for lights and fans on the ceiling

• Cryogenics– He gas pipes have to be connected from the compressor

building for magnetic field mapping in AH

• Platform– ILD should have its own platform on surface to avoid the risk

of delay of SiD construction3

YB0

YE+

YE-

YB+

YB-

Solenoid

Inner Vacuum Tank

AH with a garage

• AH should have a garage (alcove) for ILD to put 2 pieces (YE+, YB+) aside

• This configuration gives several merits

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Solenoid

Inner Vacuum Tank

YB0

YE-

YB-

YE+

YB+

Garage

Merits of AH with garage

• Shorter AH– ILD assembly area: 80m65m

• Flexibility of assembly area configuration, and effective use of 2 cranes

• Preferable lowering order of ILD– YE- YB- YE+ YB+ YB0 is

preferable, and can be achieved if we have a garage

– YE- YB- YB0 YB+ YE+ might be OK if cryogenic apparatus on YB0 is small enough

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80t crane has no task at this stage

YB0

Lowering order of ILD• AH w/o garage

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YE- YB- YB0 YB+ YE+

Lowering order of ILD• AH w/o garage using SiD platform

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1. Field mapping

2. YE-

3. YB-

4. YE+

5. YB+

6. YB0

Platform for ILD

Platform for SiD

• AH with a garage

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Lowering order of ILD

1. Field mapping

2. YE-

3. YB-

4. YE+

5. YB+

6. YB0

YE+, YB+ step asideYB0 step back

A possible design of AH

• Plan viewCompressor building

965m

52.5m

35m

15m

ILDSiD

Path for He pipesGarage

80 ton crane250 ton crane

12.5m

25m

1st phase assembly hall for ILD

50m space between 2 assembly halls is required for VS/DHconstruction

A possible design of AH

• Side view

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Platform for ILD

Verticalshaft

Crane rail

Helium pipes

Size of garage

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A possible ILD assembly scenario

• Assumption– Similar timeline as Fig.14.10. in TDR Vol.3.II– Surface AH shown in the previous pages– Same assembly scenario of superconducting magnet

as CMS; YB0 Outer Vacuum Tank (OVT) Coil Inner Vacuum Tank (IVT)

OVT assembly Coil insertion IVT insertion 12

A possible ILD assembly scenario

1 32 4 5 6 7 98 10

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• Not ILD official timeline• Just a working assumption for the assembly

space study

YB0

A possible ILD assembly scenarioStep-1

• Surface platform construction

• YB0 assembly• Preparation for coil

assembly

250t crane

80t crane

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Swiveling platformfor coil assembly

Platformfor ILD

Garage

1st phase assembly hall

YB0

YE+

Step-2

• YE+ assembly• Coil outer vacuum

tank (OVT) assembly• Coil assembly

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Step-3

• YE- assembly• YE+ Muon detector

installation• Inner vacuum tank

(IVT) assembly• Coil assembly

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IVT

YB0

YE+

YE-

Step-4

• YE- assembly• YE+ Calorimeter

installation• IVT, Coil assembly

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YB0

YE+

YE-

Step-5

• YE- assembly• YE+ Calorimeter

cabling• YB0 Muon detector

installation• Coil assembly

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YB0

YE+

YE-

Step-6

• YB+ assembly• YE+ pushed into

garage, ECAL cabling• YE- Muon detector

installation• Coil assembly

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YB0

YE+ YE-

YB+

Step-7

• YB+ assembly• YE- Calorimeter

installation• Coil, IVT installation

test for vacuum, cooling, and low current

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YE+ YE-

YB+

YB0

Step-8

• YB+ Muon detector installation

• YB0 Calorimeter installation

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YE+ YE-

YB+

YB0

Step-9

• YB+ pushed into garage

• YE- pushed to vertical shaft side

• YB- assembly, Muon detector installation

• YB0 Calorimeter installation

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YB0

YE+

YE-

YB+YB-

Step-10

• Close detector• Field mapping (SiD is

>50m away from ILD)

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YB0

YE+

YE-

YB+

YB-

Conclusion

• AH with a garage has several merits for ILD

• If AH can have a garage, ILD can be assembled with 65m (=52.5m+12.5m) length of AH (1st phase AH)

• Total length of AH could be ~180m (65+50+65m) if SiD requires same length of assembly area

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