1. ANTARES

2. ANTARES Detector&Physics Status of construction Detector performance
Preliminary results
Budget situation

3. ANTARES detector 12 strings, 900 PMTs float ~60 m ~350 m
Acoustic beacon
time calibration
LED beacon
electronic
container
Optical
modules
hydrophone
~100 m
shore station
electro-optic
submarine cable
~ 40 Km
2400 m
Junction box
anchor
12 strings, 900 PMTs
An 13th string dedicated to environmental properties measurements completes the detector

4. ANTARES – Junction Box connections
LINE 5
LINE 3
LINE 4
LINE 1
MILOM
LINE 2
Line 6 deployed March 16,2007
Line 7 deployed April 6, 2007
Lines 8, 9 deployed July, 2007
MILOM recovered in April
New IL deployed July, 2007
Interlink cables
Situation in April 2007

5. Situation in April 2007
375 PMTs now in the
DAQ stream
IL07

6. Line assembly Modules for line 11 completed September 07
Modules for line 12 completed January 08
(Line 12 has one acoustic sector – top one)
Problems with some JB connectors solved
(Y cables solution).

7. ANTARES Last connections
Previous plan:
Connection lines 6-10 & IL December 07
Connection lines & repair line 4 May 08

8. ANTARES now an operational Neutrino Telescope
Mediterranean Sea, 43° N
South pole
<25%
exposure
not
visible
Less background light
Better angular resolution
ANTARES now biggest NT in Northern Hemisphere
(Effective area very similar to AMANDA)
Chance of major original discoveries

9. Autonomous Transponder
Measurement of PMT positions  acoustic measurements + use of compasses&tiltmeters
Line 1
hydro phones
Autonomous Transponder

10. Line Alignment using tiltmeters-compasses + hydrophones
5 position sampling points
25 gradients (tiltmetre data
from each storey)
 can reconstruct line shape

11. Acoustic positioning in Antares
Test results of the 3 recently (re)connected lines : - L4 works nominally (5 Rx + 1 RxTx) - L11 works nominally (5 Rx + 1 RxTx) - L12 works nominally (5 Rx + 1 RxTx) To resume, the status of the AP system on the full Antares Detector : RxTx emitters fully functionnal on BSS - all Rx receivers fully functional located along the lines (almost 60 if concerned LCM are alive) ==> the acoustic positioning is ready to provide data to perform precise alignments.
Already available for lines 1-5 for data collected up to December 2007

12. Latest sea operation
Wednesday May 28, 2:51 pm

13. Latest sea operation

14. Latest sea operation

15. Friday May 30, 7:10 pm

16. ANTARES online event display
t [ns]

17. ANTARES event reconstruction
t [ns]

18. ___ MC ___ Data Atmospheric m reconstruction using alignements
Very preliminary
___ MC
___ Data
Data
MC*0.61
Rate (Hz)
Atmospheric ms
Nadir (degrees)
Agreement in shape
Agreement in rate to within ~10%
Integral of data: 0.71
Integral of MC : 0.79

19. m zenith angle distribution after cut
No alignements used !!
applied the standard cut: L > -5.3
Very preliminary
number of events
Neutrino candidates
cos q

20. Coincidence rates between adjacent PMTs Main contribution: 40K decays
Time difference (ns)

21. Coincidence rates in the lines
Main contribution: 40K decays
But also atm. Muons !!!
Coincidence rates in the lines
Analysis by D. Zaborov (ITEP)
Time difference (ns)

22. Extracting muon rate Main contribution: 40K decays
But also atm. Muons !!!
Extracting muon rate
Analysis by D. Zaborov
Very preliminary
~ 3400 m
~ 3050 m

23. ANTARES Bioluminescence&Efficiency
High bioluminescence rate in March-May 2006
Big improvement starting from June
Bioluminescence much lower in 2007 than in 2006
March-May 2007 best ever period for ANTARES

24. ANTARES Budget&MoU
New MoU ready since November 2006 (waiting for signatures)
Already signed by CNRS, Saclay, Strasbourg, INFN, Nikhef, Bucharest  Valencia

25. ANTARES Common Fund Common Fund Budget:
2007  705 kEuro (INFN: 135 kEuro)
2008  450 kEuro (sharing proportional to # of “authors”)
(INFN contribution  118 kEuro)
“The CF for the years will be agreed upon by the FRB”
INFN has fully satisfied its financial commitments for both
Construction and CF !!

26. ANTARES Common Fund Common Fund Budget:
2008  450 kEuro (sharing proportional to # of “authors”)

27. Richieste 2008

28. Proposte referee 2008
BARI
BOLOGNA
CATANIA

29. Proposte referee 2008
GENOVA
LNS
PISA
ROMA

30. proposte dei referee LAB. Rich. Prop. Taglio% Taglio corr. Ass.2007 BA
75.5 51
32% 53 BO
95.8 66
31% 44 CT
65.36 45
43.5 GE
31.6 23
27%
LNS
26.7 19
29% PI
215.78
188
12.8%
28%
176 RM 42 31
26% 38
Totale
552.74
423
23.4%
29%
509+50

31. Taglio su miss. Est. LAB. Rich. Prop. Taglio% BA 45.5 27 40% BO 66 44
33% CT
21.6 14
35% GE
24.6 17
31%
LNS
21.0 PI
55.4 37 RM 30 21
30%
Totale
264
174
34%
- Il drastico taglio su ME nel 2007 ha creato non pochi problemi
- Il 2008 sara’ un anno in cui la presa dati sara’ piu’ intensa

32. The End

33. Diambrini at LOMONOSOV

34. Taglio su miss. Est. LAB. Rich. Prop. Ass.2007 Taglio% BA 45.5 27 40%
27.5 BO 66 44
33%
33.5 CT
21.6 14
35%
17.5 GE
24.6 17
31% 23
LNS
21.0
13.5 PI
55.4 37
29.5 RM 30 21
30% 22
Totale
264
174
34%
166.5
- Il drastico taglio su ME nel 2007 ha creato non pochi problemi
- Il 2008 sara’ un anno in cui la presa dati sara’ piu’ intensa