Transcript VCI07_session2FD

F. DRUILLOLE,
CEA-Saclay
France
The ANTARES
underwater neutrino
telescope
Physics goals of ν telescopes
• High energy n astrophysics:
Galactic sources
X-ray binaries, SNRs, Microquasars,
Extra-Galactic: AGNs, GRBs,..
Point-like sources: n direction + time, energy
Crab Nebula
SS433
Diffuse fluxes: energy
• Dark matter: WIMPs, Monopoles
• Atmospheric n’s
•New physics, new sources
• Host to other sciences: oceanography,
seismology
GRB 971214
GALACTIC
Supernova
e
E X T R A - G A L A C T IC
Possible sources
Gamma Ray Bursts
Pulsars
Microquasars
Active Galactic
Nuclei
ANTARES universe window
atmospheric ν’s :104
reconstructed per year
Atmosphere
Sea
Earth
atmospheric μ’s:
107 reconstructed
per year
high energy diffuse flux,
point sources
cosmic ν’s:
1 to 100 selected per
year
Detection
principle
Milieu
transparent
γč
θč
μ
Earth
The ANTARES Collaboration
International Collaboration
• 21 Institutes
• 6 European Countries
CPPM, Marseille
 DSM/DAPNIA/CEA, Saclay
 APC Paris
 IPHC (IReS), Strasbourg
 Univ. de H.-A., Mulhouse
 IFREMER, Toulon/Brest
 C.O.M. Marseille
 LAM, Marseille
 GeoAzur Villefranche
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University of Bari
University of Bologna
University of Catania
LNS – Catania
University of Pisa
University of Rome
University of Genova

IFIC, Valencia
NIKHEF, Amsterdam
 KVI Groningen
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ITEP,
Moscow
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University of Erlangen
La Seyne sur Mer
ANTARES detector
12 strings, 900 PMTs
shore station
2400 m
float
electro-optic
submarine cable
~ 40 Km
Acoustic beacon
anchor
Junction box
A 13th string dedicated to the measurement of environmental properties completes the detector
Antares detector
action
La logistique
dansinANTARES
• 12 lines with 75 PMTs
• 5 sectors/line
• 5 storeys/sector
• 3 PMs/storey
14,5 m
350 m
40 km cable
2475m
100 m
~ 60 m
lecture
Junction
box
25 Mb/s maximum
Data Stream
PMT
PMT
LCM 1
PMT
LCM 2
100 Mb/s
maximum
Physics
Event
LCM 3
DWDM
MLCM
DWDM
=
Dense Wavelength
Division Multiplexing
PC 1
DataFilter
LCM 5
1 Gb/s
maximum
DWDM
mux &
demux
From other
sectors
SCM
PC 2
DataFilter
PC 3
DataFilter
From other detector strings
1 Gb/s
JB
1 Gb/s
to shore (40 km)
Junction Box
PC N
DataFilter
Storey elements
10” PMT
LED beacon for time calibration
Mu-metal cage
Optical Module
Electronics module
Hydrophone
RX
Optical
Modules:
Antares
eyes
(ARS) Front end
board x 3
Acquisition
-106 gate FPGA
- VxWorks
- 100 Mbit/s
Ref Clock 20Mhz
(50 ns)
Compass, tiltmeters
Power supply
Local Control Module (LCM)
Ethernet 100 Mbit/s  1 Gbit/s
Optical link, hydrophone…
Antares electronic front
end
sampling
PMT
TVC
Pipeline
PSD
ADC
ADC
Data formatting
photon
Selecter
ARS : Analog Ring Sampler
1 GHz
Time
base
Trigger request
Time Stamp
Full custom ASIC (AMS CMOS 0.8mm)
23 mm2 (68000 transistors)
92 input/output pins
“ARS” Chip
4 x 5 mm2
200mW at 5V
Main features:
4 channels 1GHz analog sampler
2 ADC (8 bits) - 24 DACs
20 Mbit/s Fast output port
Fully configurable (online)
via 75 SC parameters
OFF-SHORE DATA PROCESSING
3x (L0 et L1)
L2
Trigger
Counting
ARS 2
ARS 3
ARS 4
Two ARS/
reducing dead time
ARS 5
Buffer
Multiplexer
ARS 0
ARS 1
ARS 0
Logical gate (FPGA)
SPE
anode
waveform
counting
RAM
CPU BUS
100 Mb/s
Ethernet Port
Slow control
object
Slow control on
request/configuration
13 ms data
RS485
Processor MPC860P
To the shore
PC1
To the shore
PC2
ON-SHORE & OFF-SHORE DATA PROCESSING
LINE N°1
Time calibration with the led beacon
Time accuracy
< 0.5 ns
Positionning
better than
10 cm
Pic du photoélectron
(40K et bioluminescence)
2 cm
Charge range ~ 20 p.e
With waveform < 150 p.e
Continuous seismic monitoring in situ
Lavandou (France)
9 /02/ 2006
Mozambique
22 /02/ 2006
One line data
• Connection of the first line on 2 March
2006
Muon reconstruction, single line
Dt < 20 ns
• Data filtering in line
– Local triggering L1:
coincidence < 20 ns on one storey
– 5 L1 in coincidence
Dt < 20 ns
Dt < 20 ns
Dt < 20 ns
Dt < 20 ns
• One single line
 low accuracy on azimuth angle
 4 parameter fit with c2
minimization
c(ti  t0)  (zi  z0)  cos   tgc  d2  (zi  z0)2 sin 2 
The first muon on March 06 !!!
Random noise
Run 22980, time slice 37253
z (m)
21 étages
t (ns)
Line 1:
angular distribution
Hz
data
MC
Two line data
• Connection of the first line on March 06
• Connection of the second line on 21
September 06
line 1 & 2 shapes (acoustic data)
4–12 cm/s
15-26 cm/s
32-33 cm/s
Distance from the
vertical line (m)
Counting rate on first two lines
jour de septembre
2 line event
Five line data
• Connection of the lastest 3 lines at the end
of January 2007
•  Five lines are fully operational for 3D
detection.
5 line event
CONCLUSION
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3D detector is working with 5 lines.
375 PMT at 2450 meter depth.
130 processor network in the sea.
Ready to reconstruct upward events.
data storage on GRB alert is working.
• End of deployment (beginning of 2008)
• A new window to the universe