1. Undersea Neutrino Telescope Possible Solutions
Antoine Lecroart – 31 August 2005

2. Scope
Alcatel propose to offer the following elements for an undersea Neutrino telescope in a turnkey approach:
Submarine cable (OALC-4, power+fibers);
Cable Termination Assembly (CTA);
Node/Jointing Box (different solutions foreseen):
Single node solution (8 x10/100/1000 Mbit/s, 9 KW)
(Oil & Gas Solution)
Multiple nodes WDM solution (2 x GigE per node, 9 KW per node)
(NEPTUNE Canada Solution)
Installation

3. Cable (OALC-4) Well proven structure Addition of bedding layers
Strain-free fibres in steel tube
Steel wire vault
Copper tube
PE insulation
Optional armour schemes or steel tape
Addition of bedding layers
Crush resistance 9 kN/cm
It was 5 kN/cm

4. Poor Burial/Crossings
OALC Armour Range DA
Beach to 20m Shore Ends
Poor Burial/Crossings LW
> 1000m
Smooth Sea Bed
LWP
Steep/Rough Sea Bed SA
> 20m m
Full Burial

5. The OALC-4 supply record
Record of supply and commitment (over km)
Sea Me We km 1998
Atlantis km 1999
NorthStar km 1999
UK Germany km 1998
America II km 1999
Southern Cross km 2000
Mac km 2000
Japan-US km 2000
BS FOCS km 2000
Flag Atlantic km 2001
Apollo km 2003
Sea Me We 4 TBC km 2005
MedLink km (TBC)

6. CTA: Splits Power and Optical Connectors

7. CTA: Proven Jointing with Cable

8. ODI 10 KV Connector

9. Sea Earth Electrode

10. Bulkhead

11. Single Node Solution Still under definition
Up to 8 x 10/100/1000 Mbit/s
Direct light modulation
Simple Optical Multiplexing of 8 channels
Very reliable (allows point to point links)
Up to 9 KW of available power (400V)
NEPTUNE Type Converters (MV + LV)

12. CTA LVconvert MVconver WDM LVconvert Ethernet interfaces Simple
Transponder
Ethernet interfaces

13. STAGE 1: Basic Configuration (1fibre pair)

14. Stage 1: 1fp Basic configuration
BU BC
Node
BU889
BU End
BU1027
Node
Node
Node

15. STAGE 1 ASN OND T Alcatel Canada Maripro Satlantic ASN & Supplier IP
Router
GigE
To the Ethernet
IEEE802.3 HV
Conductor
10 A/10 KV
1696 MS
Management
1352CM
IP&Timing
Equipment
Timing
Generator
NTP/
1µsec PTP
Cable
Termination
Rack
Port Alberni Terminal Station
Ground Bed
PFE
2.5Gbit/s
FP 1X
10*1000 Base T
1696MS
4*MCC3
FP 1Y
ASN Sub Mgt
MV Software
LV Software
Node Powering
PFE Software
Line
Supervision

16. CTA 1696 Compact AO Filter AO Filter LVconvert MVconver MCC3
West Opt Fiber
East Opt Fiber
2.5Gbit/s
CTA
1696
Compact
AO Filter
AO Filter
LVconvert
MVconver
MCC3
2*1 Gig Ethernet
MCC3
2*1 Gig Ethernet
LVconvert
ESC
Media
Conv
G Ethernet
G Ethernet
G Ethernet
6800
6800
10 / 100 Base T
10 / 100 Base T
Media
Conv
O-1 and S-1 interfaces

17. Backbone Branching Scheme
Extension Node
Extension Cable Assembly
(up to 100 km)
Cable Pack Assembly
(100 m) BU
Backbone
Fully Compliant Node
Spur Cable
PBOF Hose Assembly

18. LV Power/Comms Housing
Node Module
Float Assembly
Guard Frame
Telemetry Cable
MV Housing
LV Power/Comms Housing
ROV Connector Panel
Science Harness Cable
Dummy Load
Weight (in-air) 4000 kg (8,800 lbs)
Weight (in-water) 45 kg (100 lbs)
Length m (9 ft)
Width m (6.4 ft)
Height m (4.6 ft)

19. Node Module Block Diagram
Power/Telemetry
Cable
Parking Panel (CTA & 4 Science)
CTA
Cathode
Science Harness
Cables (8)
MV Power
Housing
O-1 Interface/
Extension Node
Power/FO Cables
CTA-Power
Connector
Covers (typical)
Node Module
Parking Panel (2 O-1 & 4 Science)
Node Base
CTA-F/O
LV PWR/
COMMS
Wet
Dry
ROV
Panel
ROV Connector Panel
LV Power/Comms Housing
Dummy Load Housing

20. Medium Voltage Power Housing Assembly 10KVDC to 400VDC
Bellows
MV Power Converter
Chassis Assembly
MV Penetrators (3)
Power/Telemetry
Connector
Weight (in-air) 770 kg (1700 lbs)
Weight (in-water) kg (1200 lbs)
Housing Diameter mm (16.6 in)
Housing Length mm (60 in)

21. Low Voltage Power/Comms Housing Assembly
Optical Penetrators (3)
Optical Splice Tray
E/O Media
Converters (4)
Inner Bulkhead
Science Harness Cable Assemblies (8)
Power/Telemetry Connector
Pressure Relief
Assembly (2)
Fill Ports (3)
LV Power Chassis Assembly
Dummy Load
Connector
Alcatel 1696SM
Alcatel 6300 (2)
Bellows
Weight (in-air) 1060 kg (2300 lbs)
Weight (in-water) 620 kg (1360 lbs)
Housing Diameter 550 mm (21.5 in)
Housing Length 1850 mm (73 in)

22. Top Assembly Weight (in-air) 6600 kg (14600 lbs)
CTA
TRF
Node Module
TRF Door (2 sets)
ROV Docking Assembly Access Hole
TRF Skirt
Science Cable (Active)
ROV Connector
Mounting Panel
Parking Panel
O-1 Interface/Power (2)
O-1 Interface/FO (2)
S-1 Science Interface (8) Sc
Parking Position W/Cover
Pad Eyes (4)
Science Cable (Parked)
Weight (in-air) 6600 kg (14600 lbs)
Weight (in-water) 2300 kg (5100 lbs)
Length 5.4 m (17.8 ft)
Width 4.6 m (15 ft)
Height 1.4 m (4.6 ft)

23. Extension Cable Pack Assembly
Extension CTA
Temporary Tray
NASPos
USBL Tracking Pinger
Flying F/O Connector
Flying Power Connector
Cable Pack Deployment Cover
PBOF Hose Assembly
PBOF Hose “Y”
(Removeable from Tray)
Cable Pack/Anchor
ROV Pulling
Handle

24. ROV Interfacing with ROV Wet Mateable Connectors

25. Science Cables (parked)
Node Module Removed
CTA
TRF
Node Module
TRF Doors (open)
ROV (Alcatel Work
Class ROV Shown)
ROV Tether
Parking Panel
Parking Position
Science Cables (parked)

26. End