Optical Fibres for the LHC Machine and Experimental Areas
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Transcript of Optical Fibres for the LHC Machine and Experimental Areas
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Optical Fibres for the LHC Machine and Experimental
Areas
Optical Fibre Meeting3 October 2002
Luit Koert de Jonge/ST-EL-OF
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ST-EL-OF / L K de Jonge 2
Agenda
The Optical Network PolicyThe Optical Network STAR pointsTechnologyInstallationContractWhat we require from YOUQuestions
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ST-EL-OF / L K de Jonge 3
The optical network policy
The CERN Optical Network is built of Optical Trunks connecting STAR points
IT and ST plan the Optical Network together The optical fibres in and between STAR
points are managed and allocated by IT-CS Individual fibre usage (dark fibres) out of a
STAR point is handled by ST-EL Users shall use the IT-CS IP/Ethernet
Network for all their Communications needs
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ST-EL-OF / L K de Jonge 4
The main surface STAR points
TCR
513 PCR
BA5
24m+192s
24m+192s
24m+192s
24m+48s
24m+48s
48m+96s
48m+144s
36m+144s
24m+24s
PS 354
Main
SM18
BA7
BA2
24m+24s
BA1
BA6
12m+12s
5848m+96s
P8
48m+96s
Geneva Airport
48m+96s
BA4CNGSMeyrin
France
CERN CCC
LHC LHC
Y
Y
LHC
P2
SR1
P6
P7
P5
P4
PZ33
UJ32
TZ32P32
TZ76UJ76“LAME VIBRANTE”
To lay the HDPE ducts P32-PZ33
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ST-EL-OF / L K de Jonge 5
The “Lame Vibrante” at work
The machine advanced at a speed of about 60 cm per minute and left a clean field behind.One must of course be absolutely sure that no obstacles, like water supplies or electrical cables are on its way.
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Optical fibre cabling SURFACE
SURFACE TO UNDERGROUND (SHAFTS)
TUNNEL
BEAM INSTRUMENTATION
EXPERIMENTAL AREAS
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Surface optical links from PCR
Sites 1, 5, 6, 7, 8, 513 and CNGS OK
Sites 2, 32, 33 and 4 to be done
Old HDPE ducts to above sites in bad state– they are in place since 1986– ducts to P6 had (have) to be replaced– ducts to P8 had to be repaired at several spots
Blowing of cables difficult/impossible
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Optical cabling with tube systems
Install (blow) guide tubes (low cost)
Blow mini optical cables on demand
Modular and Flexible
Lower initial cost
Easy to replace cables
Outdoor resistant
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Blowing of guide tubes
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Blowing of mini optical fibre cables
This Micro-Jet can blow mini optical fibre cables with(1- 72) fibres.
Size of an A4 sheet and 10 cm high.
Several units can be cascaded. Blowing pressure is 10 Bar.
Micro-Jet from Plumettaz/CHMicro-Jet from Plumettaz/CH
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Surface ducts with guide tubes
Ø 40/50 mm duct
7 x Ø 10 mm guide tubes
Capacity 7 x 72=504 optical fibres
Ø 32/40 mm duct
5 x Ø 10 mm guide tubes
Capacity 5 x 72=360 optical fibres
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3 ducts types with guide tubes
Ø 25 mm duct with 7 x Ø 7 mm guide tubes
Capacity 7 x 24=168 optical fibres
Ø 40 mm duct with 10 x Ø 7 mm guide tubes
10 x 24=240 optical fibres
Guide tubes replaceable (change size)
Ø 18 mm duct with 3 x Ø 7 mm guide tubes
Capacity 3 x 24=72 optical fibres
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Installation principles
Ø 40 mm duct with 10 guide tubes between SR and US/UJ
Ø 40 mm duct in the LHC tunnel with stops at US/UJ and partial stops at the alcoves RE– duct fixed together with leaky feeder cable to tunnel
wall Ø 25 mm duct for SL-BI and medium installations Ø 18 mm duct for low capacity installations Once the above infrastructure is in place, the
mini optical cables can be blown The tunnel fibres must be replaceable in case of
radiation damage
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Radiation measurements (RADWG)
Measurements of optical cable (multimode and single-mode fibre)
0.1
1
10
100
1000
Dose [Gy]
Days
Attenuation [dB / Km]MM 850 nm
Attenuation [dB / Km]MM 1300 nm
Attenuation [dB / Km]SM 1310 nm
Attenuation [dB / Km]SM 1550 nm
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OTDR OTAU
NTE NTE
Optical Test Access Unit
RTU Remote Test UnitRTU Remote Test UnitCable under test
Optical Time Domain Reflecto meter
CERN intranet
SNMPWEB Client
Internet
System Management
Network terminal
to othercables under
test
Fibre monitoring system “ATLAS”
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Mini optical fibre cables
Single-mode G.652.B 9/125 optical fibres– 4 – 8 (6) – 12– 24– 48 (60) (72)
Multimode G.651 50/125 optical fibres– 6– 12– 24
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Optical terminations in STAR points
Single-mode G.652.B 9/125 optical fibres are terminated with E-2000/APC (8)
Multimode G.651 50/125 optical fibres are terminated with ST-HQ connectors
Other optical connectors are possible SC or LC
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Optical termination equipment
Fibre port 3 (4)U 19” frame for max. 144 fibres
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Fibre frame 1U 19”for max. 24 fibres
Optical termination equipment
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Optical patch cords
Very large quantities of various optical patch cords will be required
The Market Survey indicated 10’000 We must know from you what you
want and how many you want Any patch cord type is possible
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Optical fibre management
With such a dense optical network, we need to manage it
We are actually studying ways how to integrate our data into a common data base which should be linked to geographical information
We want make make use of the existing geographical information systems (GIS) and databases
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Presentation from STAR INFORMATICS
le 9 octobre 2002 à 14h30Amphithéâtre SL – Bâtiment 864 – Site de Prévessin
AGENDA 14h30 Accueil et introduction
Michel Mayoud, Chef du Groupe EST-SU 14h45 Présentation du Système d’Informations Géographiques du CERN et de ses applications
Bernard Guyot EST-SU/TOP 15h30 Pause 15h45 Présentation des applications spécialisées dans la gestion des réseaux de distribution, ainsi que dans le domaine de la gestion des chantiers et du suivi d’une flotte de véhicule de STAR INFORMATICS
Philippe Berle de STAR France 16h45 Fin de la présentation
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To resume
Market Survey MS-3120/ST/LHC– Supply, Installation, Test and Commissioning
of Optical Fibre Cabling Systems for LHC
CERN’s preference for tube systemsReceived 12 replies6 or 7 Companies will be selectedTender IT-3120/ST/LHC - FC June 2003Contract with unit pricesUsers get what they payFirst installations September 2003
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Optical Fibres for the LHC Machine and Experimental
Areas
Now we must getyour requirements!
QUESTIONS? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Luit Koert de Jonge/ST-EL-OF