1. Detector Status J. Brunner 15/10/2014

2. May 2014 Proudly take over commando on MS ANTARES Astronomy with a Neutrino Telescope and Abyss Environmental Research

3. October 2014 Consider Rebaptizing Truly Immense Telescope for Astronomy with Neutrinos Inducing Cherenkov light

4. Content Losses of Detector Lines Upgrade shore station Optical Margins UPS Situation Data Taking Status Planning of shifts for 2015

5. Active Lines per time End of stability period this summer Active Lines Usable JB output 20112012 20132014 Instrumentation Line Change of Management

6. Details on Losses End of stability period this summer Loss L3 Return L3 Loss L5 Loss L6, IL Victor Operation

7. Details on Losses Line 3: – 25/06/14 : Thunderstorm : power cuts at IMP – power cut of the Detector at 05:09:07.6 – 25/07/14 : rearming successful, line operational Line 5: – 22/08/14 at 23:49:48 during Run 77623 – no power cut : Lines 1,5,10 stopped working – Lines 1,10 could be recovered by JB off/on – 52 active OMs lost Line 6, IL – 22/09/14 at 06:42:50.4 during run 78054 – No power cut, JB3 opened – 65 active OMs lost

8. Junction Box From June-September three JB breakers opened Suspicion : Problem inside JB 9 years trend of humidity : slight increase, stable Checked various other parameters : all ok 2005 2008 20112014 Card C (battery) Card B

9. Line 5,6, IL – Optical Measurements Optical Loop – Line 5 : June 17db  August 19db, stable – Line 6, IL : both better than 20db  ok OTDR : IL, Line 6 : reflection up to BSS, ok

10. ROV operation July Junction Box inspection IL Cables not under tension X-BOX PowerX-BOX FiberLine 3

11. ROV operation July Junction Box inspection IL Cables disappear in the ground Line 5Line 4

12. Asymmetries 7 lines have small asymmetries Subtle changes due to line losses Line 5 Line 6

13. Asymmetries Asymmetries normally linked to problems in interlink cables Suspect interlinks – IC13 (to IL) : repaired on ship years ago – All cables on JB14,15,16 : high tension due to JB movement in 2008 All lines with high asymmetry stopped working Line 6 : Asymmetry due to IL Next candidate : Line 4 Line3 : ok – not understood Line 6 Line 4 Line 3 Line 5 IL

14. Sea Operation October 2014 IFREMER : “Pourquoi Pas” and VICTOR ROV 14 days mission (“Estime”) First step : Connect Oxygen probe on BJS In parasitic mode : 2h on ANTARES – Various disconnections to identify problem Result – Oxygen probe installed, operational – 3 disconnections performed close to JB

15. Sea Operation October 2014 First step : Disconnect IC13 on X-Box Images from Nov 2010

16. Sea Operation October 2014 Images from July 2014 After 45min : successful disconnection !!

17. Sea Operation October 2014 Images from Oct 2014 After the successful disconnection !!

18. JB Connector Layout Situation before VICTOR operation L6 L13 Interlink cables under tension

19. JB Connector Layout Situation after VICTOR operation 11/10/14 L6 L13 2 1 3 Interlink cables under tension

20. Junction Box Breakers Successfully rearmed Successfully switched Rearming Unsuccessful

21. Summary Sea Operation Junction Box in good shape after 12 years Still 3 Lines non-operational (Line5, Line6, IL) 3 JB outputs recovered Interlink cables to IL and to Line 5 suspected Line 6 revival : only one connection operation Line 5 revival : new IC plus 2 connections Possibility of future “parasitic” use of submarins will be explored

22. Shore Station Upgrade Preparation Work for several months in 2014 dfilter code upgraded (64bit) by A. Heijboer 27-28 May 2014 : Upgrade successfully done – B. Vallage, M. Ageron, J. Brunner – Two fallback solutions retained : java : still version 1.6.0 (planned was 1.7.2) dhcp server off-shore : still polaris (planned was sagitA)

23. Shore Station Upgrade Current situation : new machines (SL6, 64b) – sagitA : new server nfs, dhcp (onshore), nis – sagitB : mirror (nightly synchronised) – nodes 60-87 (quadruple core) : new rack room 128 dfilter processes (maximum so far) – castor, pollux, procyon, mira (control room) Old machines (SL6,64b) : old rack room – nodes-9, node-10 : ligier message, logger – node 11-21 : 12 dqueue processes

24. Shore Station Upgrade Current situation : old machines (SL4, 32b) – polaris : server dhcp (off-shore), gateway http – sirius : GRB handling – antclock (do not touch) – antjbsc, antjbsc3 Investigate RS-232 problem (12V output needed) Replace machines once a solution is found (M. Ageron) – node 23-49 (SL4, 32b) : retired, standby

25. Optical margins D. Tezier & M. Ageron : 09/07/14 Comparison to 22/03/2011 : stable within 2dB -1db -6db

26. Optical margins Line 3 Ligne 3IPTXRX SCM192.168.4.5320,818,67 S I192.168.4.315,9317,76 S II192.168.4.1015,3216,84 S III192.168.4.814,7116,23 S IV192.168.4.16815,3216,54 S V192.168.4.6215,32 Reference 2011 : All values well above 30db  important loss since ! Likely reason for absence of optical loop

27. Line 3 Interlink cable Knot with some object (plastic bag) Try to open the know with Comex submarine  only partially successful Cable bending might explain strong attenuation Attenuation might explain absence of optical loop

28. UPS Situation IMP June 2014 – New batteries ordered for both main UPS at IMP Successfully installed 11/09/14 ! Warranty for upgraded systems 3 years Additional two small UPS (1.6 kW) installed for dedicated equipment – Clock computer – Card D of JB to avoid shutdown of JB in case of IMP power cut UPS for detector (~10,000 Euro) – currently not considered

29. UPS UPS for new rack room remotely monitored

30. UPS Situation IMP 10/10/2014 thunderstorm La Seyne Several differential breakers at IMP open – DWDM, some dqueue, switch in new rack room Intervention from CPPM needed Few hours data taking lost  it seems the installed UPS does not protect against voltage spikes in input (e.g. lightning during thunderstorm)  close to useless ….

31. Operations (plots from Damien) Neutrinos per day Averaged over 1 month until October 2014 Muon Rate from June- October 2014 Difficult to conclude due to corrleation with bio rate

32. Operations (plots from Damien) Active data taking until October 2014 Muon rate evolution Until Ocotber 2014 2016

33. Recent K40 Rates 20% Loss in rate per year despite charge calibration 10% loss of PMT efficiency ROV survey July : most likely due to “biofouling” Explore possibility to “clean” OMs (under study)

34. Shift quota Mail to group leaders on 01/10/2014 Author list group member count updated (118) Shift list will be filled in November InstitutA A A A Oujda2GRPHE3COM3Genova3 Wurzburg2APC9GeoAzur2Rome4 Bamberg2Clermont1LAM3Napoli3 ECAP27IPHC1IFIC6Bari1 CEA4CPPM11UPV5Catania2 NIKHEF9ISS3Bologna4LNS8

35. Run Coordinators & Operations Manager List of volunteers for 2015 in alphabetical order (2months == 4 shifts) : – Bruny Baret, Ronald Bruijn, Juergen Brunner, Damien Dornic, Oleg Kalekin, Vladimir Kulikovsky, Robert Lahmann, Dorothea Samtleben Operations Manager – Alexander Enzenhoefer – Start (probably) at 01/02/2015

36. Detector Dismantling Tender for dismantling study J.F. Drogou (ex-IFREMER) obtained contract Monthly meeting to progress with project Goal – Set up different scenarios – Define time and equipment needed – Define procedures

37. Conclusion We will continue to do our best ….

38. Detector Survey Line 1 survey during ROV operation July 2014 Likely reason for observed efficiency drop Cleaning possible ?  being investigated

39. Line 3 – Tests Optical loop measurements – No optical Loop for Line 3 –  all other lines OK Ping of acoustic releases (16/07/14) – Acoustic Releases Line 3 (both) do not respond –  other lines ok (with exception of 1 release) Suspicion : Line 3 is gone … Comex : Janus 2 + Apache ROV – 23-25/07/14, 12h dive on 24/07/14 – Check Line 3 still in place – Try to understand reason for failure – General detector survey

40. Line 3 Friday 25/07/14 : new trials to rearm breaker Documentation not clear Software gives ambiguous replies Correct RS232 command “ 0SB” – G. Hallewell, S. Henry, JB Rearming without problems ! Spontaneous breaker opening  not understood Acoustic Releases  Coincidence ? Optical Loop  see next slides

41. Line 3 – ROV operation Line 3 in place, nothing suspicious Release system ok Connector ok