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 Progress of developments for KM3NeT @ the NIKHEF technical departments since the WP3 and WP4 meetings in Paris 09-11-06
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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.
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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 ?
WP3 meeting Pylos 16-04-07
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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
WP3 meeting Pylos 16-04-07
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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
Production modelIndependent manufacturing 365 lines?
Single Fibre
per line
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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”
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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
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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.