WP3 meeting Pylos 16-04-07 1 of 21 Jelle Hogenbirk et al. electronic department The sphere...
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Transcript of WP3 meeting Pylos 16-04-07 1 of 21 Jelle Hogenbirk et al. electronic department The sphere...
WP3 meeting Pylos 16-04-07
1 of 21
Jelle Hogenbirk et al. electronic department
The sphere containing multi PMT’s: - HV and discriminator board for each individual PMT- Continuing tests 3.5 inch PMT specifications - Basin for testing half a sphere 16 PMT’s movable in water with a fixed photon source- Suspension/fixation of the 16 PMT’s in half a sphere
The DAQ system, especially:- Vertical cabling and suspension of spheres- First data transport tests over copper - Developments in the all optical readout system
Major external contacts:- Infineon VDSL 2 evaluation board set (on technical non disclosure base with NIKHEF)
- Interaction with the Technical University of Eindhoven- Interactions with ACREO (Sweden) developments of a poled fiber based modulator- Visiting C.I.P. about the feasibility of the “all optical” read out system especially custom integrated photonic circuits- Visiting Seacon Europe for the construction of the vertical line cabling
Progress of developments for KM3NeT @ the NIKHEF technical departmentssince the WP3 and WP4 meetings in Paris 09-11-06
WP3 meeting Pylos 16-04-07
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Jelle Hogenbirk et al. electronic department
1. PMT data from sphere to shore (10 Gb/sec)
2. Detector control data from shore to sphere v.v. (100 Mb/sec??) compass, tilt, temperature, flow, salinity, acoustics, beacons ??
3. Communication for time calibration
4. Determine a different physical layer for emergency reset, a fallback channel, redundant control??
General KM3NeT data communication requirements ?
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Jelle Hogenbirk et al. electronic department
C.I.P. Is a partner in European research programs on WDM-PON e.g. PIEMAN ~ Photonic Integrated Extended Metro and Access Network
low cost reliable
Many variations of the booming FTTH architecture
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Jelle Hogenbirk et al. electronic department
vdsl2vdsl2
10kV/400VRef: Catania
400/48V
3GbpsLINE 1
apd
30:1
AD
M
1
1.. n 2.. n
logic
mux
vdsl2
48V/3.5
logic 1 .. 32 x
c
PMT
PMT
c
OM 1
<100Mbps
Vertical Cable VDSL2
Maincable
GPSrec.
Shore station
laser1..n
1
n
Clock
apd
clck-sc-cal.
data
GbECopper
Logics
CPUs
Power
apd
1:n
1.. n
branch equivalent
10kV
JB branch
AnchorsLINE 2..n
n = number of lines on 10kV branch (<60)
Branch cable: n x in one fibre, 1 x 10kV power line
m branches
Main cable: m fibres, 1 x 10kV power line
m = number of branches
vdsl2
General diagram photonic-copper mix
OM 2..30
WP3 meeting Pylos 16-04-07
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Jelle Hogenbirk et al. electronic department
VDSL 2 CO (central office) VDSL 2 CPE (customer premises equipment)
Infineon VDSL2 evaluation boards
540 meter twisted pair18 x 30 meter
WP3 meeting Pylos 16-04-07
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Jelle Hogenbirk et al. electronic department
time
ampl
itude
frequency
pow
er
4096 carriers
First VDSL 2 channel measurement
WP3 meeting Pylos 16-04-07
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Jelle Hogenbirk et al. electronic department
General diagram “all optical”
GPSrec.
1 .. 16 x
Shore station
c
PMT
PMT
Optical module
c
laser1..n
2
n+1
1>2
1+2n+n+1
data
~30 x
Clock
apd
clck-sc-cal.
data
GbECopper
Logics
CPUs
Power
~16 x
Power
apd
Clockcal
½ns
serdes
Production modelIndependent manufacturing 365 lines?
Single Fibre
per line
WP3 meeting Pylos 16-04-07
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Jelle Hogenbirk et al. electronic department
GPSrec.
1 .. 16 x
Shore station
c
PMT
PMT
Optical module or instrumentation
c
laser1..n
2
n+1
1 or1 + 2
n+n+1
SOA
data
~25 x
Clock
apd
clck-sc-cal.
data
GbECopper
Logics
CPUs
Power
~16 x
Power
apd
Clockcal
½ns
serdes
EAM
Production modelIndependent manufacturing 365 lines?
Single Fibreper line ?
200 optical channels in
1 fibre
possible
O/E process
Concentrated equipment on shore Distributed modules offshore
Line base
Suits well in the base line approach:Cost driven,Proven technology
Progress on the general diagram “all optical”
WP3 meeting Pylos 16-04-07
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Jelle Hogenbirk et al. electronic department
Hit 1Hit 1
Hit 2
Two with overlap
Shower?
Late hit?
0
7
8
10
9
12
11
Single photon pulse : Typ 5 nsec (Min 2 nsec and 7 nsec post ampl.)
1 nsec
PM
T n
um
ber
time7 nsec
15
Random or first?
PMT outputs of a typical event in a multiple PMT OM~ 7ns
Time over threshold single photon pulse resourced by a 3.5 “ PMT
WP3 meeting Pylos 16-04-07
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Jelle Hogenbirk et al. electronic department
From PMT’s
02 14515I0 I1 Ix
identifier
D D D D D D D D D D D
one optical pulse triggers the intrinsic part of the photo diode
serialized output after one optical trigger
electric output to optical modulator
CW + clk pulsefrom shore
3
Electronic-photonic front end
15
1,6 nsec <=> 3,2 nsec
5 4 3 2 1 0
Puls det&
gain flattening
~ 7ns
16 PMT’s and 4 identifiers => 20 data bits. Optical trigger repetition rate: 1,6 nsec <=> 3,2 nsec80 <=> 160 psec sample pulse width.If “D” delay 100 psec then the system adapts to10Gbit/secoptical transmission technology.
e.g. every 2 nsec
I0 I1 Ix
Modulator, e/o and 2R or
3R ?unit
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Jelle Hogenbirk et al. electronic department
Hit 1Hit 1
Hit 2
Late hit?PMT 2
PMT 5
2 nsec
Readout pulses x + . . . 1 2 3 4 5 6 7 8
PMT 1 2 3 4 5 . . . . . .
100 psec
1
2
3
4
5
PMT value readout method “all optical”
Re
ad
ou
t p
uls
es
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Jelle Hogenbirk et al. electronic department
(metal-silicon-metal photo diode)
100 psec
Single Serial to parallel photonic chip
Optical trigger
e.g. signal from PMT circuitry
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Jelle Hogenbirk et al. electronic department
GPS
Trigg.
de_serialize
line control
Calibration pulse
Computer system
Data buffer
readout clk 1,6 <=> 3,2 nsec
event time
o/e
The shore station transmits a calibration signal. The calibration signal is reflected by each optical module
to the shore station for signal propagation delay calculation.
zero supp . ?
e/o
Basic approach “head end”
TDC
Clkgen.
enable
event
timestampgeneration
data
PropagationCal. pulse
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Jelle Hogenbirk et al. electronic department
BER: Bit Error Ratio or Bit Error Ratethe ratio of the number of bits received erroneously to the total number of bits transmitted.BER is limited by random noise and/or random jitter and is a statistical value
More detail: www. maxim-ic.com , app note: HFTA-010.0: Physical layer performance: testing bit error performance
Examples:10 Gb/sec transmission requirements specify a BER better than 10-12
Eye pattern
time jitter
nois
e jit
ter
Characterizing:Rise timesFall timesJitter at the middle of the crossing point of the eye overshootAnd many other numerical descriptions in order to compare devices.
Up to optical system simulation
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Jelle Hogenbirk et al. electronic department
• CD chromatic dispersion
• PMD polarization mode dispersion
• Length 100km• Attenuation 0.2 db/km• Wavelength nom. 1550 nm• Bit rate 10 Gb/sec
Standard fibre types:SMF 128 dispersion 0 @ 1310 nm
SMF 652 B dispersion 0 @ 1310 nm
G 655 reduced dispersion @ 1550 nm
Scoop, visualizer
simulation setup for fibre specification
VIPsystems (virtual photonics industries)
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Jelle Hogenbirk et al. electronic department
Optical output @ EAM => input for the fibre types to be simulated
eye pattern and BER contourHighest BER 10-4
Lowest BER 10-30
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Jelle Hogenbirk et al. electronic department
SMF 128 CD: 16.10-6 s/m2 (real world 16 ps/nm.km)
eye pattern and BER contourHighest BER 10-4
Lowest BER 10-5
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Jelle Hogenbirk et al. electronic department
Antares / Nemo fibre G655 with CD: -3.1 10-6 s/m2
eye pattern and BER contourHighest BER 10-4
Lowest BER 10-30
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Jelle Hogenbirk et al. electronic department
Antares fibre G 655 with PMD =< 0.08 ps/km-1/2 en CD: -3.1 ps/nmkm
eye pattern and BER contourHighest BER 10-4
Lowest BER 10-16
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Jelle Hogenbirk et al. electronic department
In relation with today's developments for fibre to the curb or fibre to the homeFTTx
All copper in detector strings (risers)
Event time stamp locally at each detector floor
Moderate high speed data communication
Enlarged local electronics off shore
Store and forward data communication
Joined power and data transport
All fibre in detector strings (risers)
Event time stamp on shore
Very high speed data communication
minimized local electronics off shore
Real time data communication (optical channels)
Power and data transport separated
Fibre network for data communication over a long distance based on optical channels includes “optical addressing”
KM3NeT DAQ vertical cabling solutions
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Jelle Hogenbirk et al. electronic department
Prospects
All copper in detector strings (risers)
Event time stamp locally at each detector floor
Moderate high speed data communication
More local electronics off shore
Store and forward data communication
Power and data can be transport united
All fibre in detector strings (risers)
Event time stamp on shore
Very high speed data communication
Less local electronics off shore
Real time data communication (optical channels)
Power and data transport separated
Costs relay on:• primary hardware • power needs • reliability• open system• construction • test benches• deployment• ease of mass production