Detector Assembly and Cryogenics Requirements for ILD Project

DH in Hybrid-A and ILD
2014/9/5
Yasuhiro Sugimoto
1
ILD assembly scheme
Baseline option
Detector is pre-assembled on
surface up to <200 ton (400
ton for solenoid) pieces
These pieces are transported
to DH and assembled to a
complete detector
Sub-detectors are installed in
DH
Magnetic field measurement
is carried out in DH
We need plenty of space for
detector assembly and
installation in DH
Hybrid-A’ option
Detector consisting of 5 rings
is mostly assembled on
surface
Each ring is lowered to DH
using 4000 ton gantry crane
Muon detector, solenoid, and
calorimeters are installed on
surface
Magnetic field measurement
is carried out on surface after
barrel calorimeter installation
Trackers are installed in DH
2
ILD yoke
 
3
DH a
ssembly area in Baseline
option
Area 1: Platform
YB0 assembly
Barrel detectors
installation/cabling
Endcap calorimeters installation
Area 2/3: Alcoves
Endcap calorimeters cabling
QD0 support tube assembly
FCAL install/cabling
Area 4: Tentative platform on
beam line side
YE, YB+, YB- (iron yoke and
muon detector)
assembly/install/cabling
Area 5: Loading area side
HCAL rings assembly
Tooling assembly
Storage area
4
DH assembly area in Hybrid-A’
option
Area 1: Platform
Landing of lowered
detector rings
Barrel trackers
installation/cabling
Area 2/3: Alcoves
QD0 support tube
assembly
FCAL install/cabling
5
Requirements for cryogenics
Baseline option
He compressor in a
compressor cavern
located near the
center of damping ring
Cold box on the
detector platform or on
the utility floor (6F)
Hybrid-A’ option
He compressor on
surface
He gas pipes through
18m shaft
Cold box on the
detector (YB0)
6
Cranes in DH for ILD
Baseline option
One 250 ton crane for
yoke assembly
One 80 ton crane for CAL
installation
Another 250 ton crane
(borrowed from SiD) for
solenoid installation
5 ton cranes in alcoves
for end-cap CAL and
FCAL installation
Hybrid-A’ option
One 40 ton crane for
tracker installation
Another
 40 ton crane
(borrowed from SiD) for
CAL maintenance, if
needed
5 (or 2.5?) ton cranes in
alcoves for FCAL
installation
(If a >80 ton piece has to
be taken out from DH,
250 ton crane of
assembly hall will be
used)
7
DH size
Height
In Hybrid-A’ option, smaller cranes
than baseline option are needed
Therefore DH height (space above
crane rails) could be slightly smaller
than Baseline option (by ~2.4m?)
Length
In Hybrid-A’ option, assembly area at
both ends of DH needed in Baseline
option can be reduced
Loading area at both ends is still
necessary for sub-detector installation
and detector maintenance
L=108m seems OK (track of trailer in
the loading area has to be seriously
studied)
8
DH in Baseline
option
DH size
9
Assembly schedule
Baseline option
In the new estimate by J-
Power (ALCW2014), DH
construction takes much
longer time than TDR: 54
months 
 68 months
 (62
months if land forming period
is subtracted)
ILD will be ready for
commissioning with beam in 9
year from the beginning of
land forming (8.5 years from
the beginning of excavation)
Hybrid-A’ option
In the estimate by J-Power at
ALCW2014, DH construction
takes 62 months, which is
not the critical path
Assembly hall construction
period and detector
assembly period on surface
are critical
If assembly hall can be
constructed in 2 years, ILD
will be ready for
commissioning with beam
8.5 year from the beginning
of land forming (8 years from
the beginning of excavation)
Hybrid-A’ option can make ILD schedule earlier by 0.5 year
10
Assembly schedule
Baseline
Hybrid-A’
11
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The ILD project involves assembling detectors using pre-assembled pieces on surface and lowering them into the assembly area. The detectors are equipped with various components like muon detectors, solenoids, and calorimeters. Magnetic field measurements are carried out during the assembly process. Cryogenics requirements include helium compressors and cold boxes positioned strategically for efficient operation. Specialized cranes are used for yoke assembly. The assembly areas in both Baseline and Hybrid-A options are detailed, depicting the specific tasks carried out in each area.


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  1. DH in Hybrid-A and ILD 2014/9/5 Yasuhiro Sugimoto 1

  2. ILD assembly scheme Baseline option Detector is pre-assembled on surface up to <200 ton (400 ton for solenoid) pieces These pieces are transported to DH and assembled to a complete detector Sub-detectors are installed in DH Magnetic field measurement is carried out in DH We need plenty of space for detector assembly and installation in DH Hybrid-A option Detector consisting of 5 rings is mostly assembled on surface Each ring is lowered to DH using 4000 ton gantry crane Muon detector, solenoid, and calorimeters are installed on surface Magnetic field measurement is carried out on surface after barrel calorimeter installation Trackers are installed in DH 2

  3. ILD yoke 3

  4. DH assembly area in Baseline option Area 1: Platform YB0 assembly Barrel detectors installation/cabling Endcap calorimeters installation Area 2/3: Alcoves Endcap calorimeters cabling QD0 support tube assembly FCAL install/cabling Area 4: Tentative platform on beam line side YE, YB+, YB- (iron yoke and muon detector) assembly/install/cabling Area 5: Loading area side HCAL rings assembly Tooling assembly Storage area Beam line Area4 50m Area3 Area2 Area1 71m Alcove Alcove Area5 Loading area Access tunnel Utility space (6F) 4

  5. DH assembly area in Hybrid-A option Area 1: Platform Landing of lowered detector rings Barrel trackers installation/cabling Area 2/3: Alcoves QD0 support tube assembly FCAL install/cabling Beam line 50m Area3 Area2 Area1 54m Alcove Alcove Loading area Access tunnel 5

  6. Requirements for cryogenics Baseline option He compressor in a compressor cavern located near the center of damping ring Cold box on the detector platform or on the utility floor (6F) Hybrid-A option He compressor on surface He gas pipes through 18m shaft Cold box on the detector (YB0) 6

  7. Cranes in DH for ILD Baseline option One 250 ton crane for yoke assembly One 80 ton crane for CAL installation Another 250 ton crane (borrowed from SiD) for solenoid installation 5 ton cranes in alcoves for end-cap CAL and FCAL installation Hybrid-A option One 40 ton crane for tracker installation Another 40 ton crane (borrowed from SiD) for CAL maintenance, if needed 5 (or 2.5?) ton cranes in alcoves for FCAL installation (If a >80 ton piece has to be taken out from DH, 250 ton crane of assembly hall will be used) 7

  8. DH size Height In Hybrid-A option, smaller cranes than baseline option are needed Therefore DH height (space above crane rails) could be slightly smaller than Baseline option (by ~2.4m?) Length In Hybrid-A option, assembly area at both ends of DH needed in Baseline option can be reduced Loading area at both ends is still necessary for sub-detector installation and detector maintenance L=108m seems OK (track of trailer in the loading area has to be seriously studied) DH in Baseline option 8

  9. DH size 108m 28m 28m Platform moving jacks 4.5m 3m 6.5m 2m 3m 3m Cable trench Trailer (L=16.5m) Crane accessible area 9

  10. Assembly schedule Baseline option In the new estimate by J- Power (ALCW2014), DH construction takes much longer time than TDR: 54 months 68 months (62 months if land forming period is subtracted) ILD will be ready for commissioning with beam in 9 year from the beginning of land forming (8.5 years from the beginning of excavation) Hybrid-A option In the estimate by J-Power at ALCW2014, DH construction takes 62 months, which is not the critical path Assembly hall construction period and detector assembly period on surface are critical If assembly hall can be constructed in 2 years, ILD will be ready for commissioning with beam 8.5 year from the beginning of land forming (8 years from the beginning of excavation) Hybrid-A option can make ILD schedule earlier by 0.5 year 10

  11. Assembly schedule Baseline Hybrid-A 11

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