ANTARES

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

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

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

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

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).

ANTARES Last connections Previous plan: Connection lines 6-10 & IL December 07 Connection lines 11-12 & repair line 4 May 08

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

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

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

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 : - 13 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

Latest sea operation Wednesday May 28, 2:51 pm

Latest sea operation

Latest sea operation

Friday May 30, 7:10 pm

ANTARES online event display t [ns]

ANTARES event reconstruction t [ns]

___ 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

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

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

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)

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

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

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

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 2009 - 2011 will be agreed upon by the FRB” INFN has fully satisfied its financial commitments for both Construction and CF !!

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

Richieste 2008

Proposte referee 2008 BARI BOLOGNA CATANIA

Proposte referee 2008 GENOVA LNS PISA ROMA

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% 135.5+50 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

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

The End

Diambrini at LOMONOSOV

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