1. Interdisciplinary Activity ANTARES
Privileged site for the observation of Mediterranean deep sea
C. Curtil – 16 / 09 / 2008

2. Antares detector One floor 14.5 m 40 km deep sea cable to shore
12 lines
25 floors / line
3 PMs / floor
900 PMs
Antares detector
One floor 25
14.5 m
350 m
40 km
deep sea
cable to shore
100 m
Junction
Box
~70 m
Interlink cables
depth : 2500m
© F. Montanet

3. Neutrino telescope: Detection principle
3D PMT array m
Cherenkov light from m gč nm
43°
Sea floor
Simulation de l’interaction nNmX
Section efficace vs énergie
Absorption dans la Terre
Simulation des bruits de fond
muons atmosphériques
muons induits par n atmosphériques m
interaction n

4. ANTARES Collaboration
ANTARES shore station
40 km submarine cable
-2475m depth
25 Institutes from 7 European countries

5. Line connection by ROV ROV « VICTOR » from IFREMER
ODI link equipped with
wet mateable connector (4 optical, 2 electrical contacts)
Line connection
Junction box connection

6. 2 years operation from 05 to 07
Interdisciplinary
Instrumentation line
Lines Std
MILOM
IL 07
Ligne 12
6 storeys with new devices:
Cameras O2
Hydrophones for
acoustic detection
Deployed in July 07
hydrophones CT
IODA (F25)
Seismometer (BSS)
Line with 3 storeys:
ADCP SV CT
C-Star
Seismometer
OMs
LOB
2 years operation from 05 to 07
14.5m
Camera
ADCP
Ligne 5 OM
80m
C-Star
Courantometer AquaDopp (F23) SV CT
14.5m
hydrophones
Ligne 4 O2
14.5m
SV–CTD (F24)
hydrophones
C-Star
80m
Camera
Extension OM
ADCP
hydrophone
98m
Secondary JB Pr …
Sismomètre

7. Oceanographical probes
Various probes measure the characteristics of deep water
Temperature
CT(D) : Conductivity – Temperature (– Depth)  Salinity
Preliminary
MILOM F1
IL07 F4 & F6
2005
2006
2007
2008
ADCP
AquaDopp
OM off
Sea current speed
MILOM F1
L5 F23
IL07 F1 & F5
Preliminary
2005
2006
2007
2008

8. Characteristics of the deep sea current
Under influence of the Ligure current N E W NW NE N S E W NW NE SE SW
Preliminary
The mean velocity around 7 cm/s.
Speed > 2cm/s
Speed < 2cm/s
Preliminary
High variability in the deep sea current direction

9. Bioluminescence : Optical Background
In the literature:
“baseline”
40K and bioluminescent
bacteria (?)
Photomultiplier counting rate
kHz
secondes

10. Correlation between bioluminescent activity and parameters of Mediterranean deep water.
2007
2008
In general: The number of bioluminescent flashes increases with the current velocity.
Preliminary
From 15 cm/s, the rate of flash (BurstFraction) is so important, that we must turn off the photomultipliers to avoid a premature ageing
Since Summer 2006
MILOM 2005
Preliminary
Stéphanie Escoffier (2006)

11. Seismology Collaboration with Géosciences Azur @ laboratory
On Antares Site
The seismograph of ANTARES belongs to a seismic monitoring network, complementary with the ground stations.

12. In situ Oxygen Dynamics Auto-sampler (IODA6000)
IODA6000 v1.0
Battery housing
ANR
Motors
Translation &
rotation axis
Incubation chamber
Optode sensor
Silicon joint
C. Tamburini, D. Lefèvre, A. Robert, P. Payre, M. Billault, S. Berthey, K. Arnaud…

13. A Video camera to see the macro organism present on ANTARES site
AXIS221 Video monitoring
Sensitivity 0.1 lux
Field of sight up to 90 degrees, infra-red…
ADCP OM
Cam
IL07
Web server integrated & software of release and capture in real-time
J. Brunner

14. Web site for the Interdisciplinary development
Dedicated
Web Server +
Local DB
Real time
Internet
Data Base
Antares
Antares
Administration interface
Public
Pages
Secure and
user friendly interface
for the data access

15. END…