DOM in Antares On behalf of Patrick Lamare

DOM in Antares On behalf of Patrick Lamare WP F-L

PPM-DOM in Antares hydrophones CT motivation 14. 5 m In situ qualification of the BEOC (storey part of the backbone) Validation of the DAQ system with data rates Camera OM? ADCP OM C-Star Mini-DOM? Validation of clock distribution on Ethernet and time stamping 80 m CT SV 14. 5 m hydrophones Validation of timing calibration O 2 14. 5 m Validation of the optical data transmission with REAM hydrophones C-Star 80 m 1 st comparison between piezos and hydrophones PPM-DOM Camera hydrophone Coincidences between PMTs ADCP OM 98 m LB Comparison with Antares OMs IL 11 WP F-L

PPM-DOM = standard KM 3 Ne. T DOM Weight Support Weight WP F-L 30 kg air -15 kg sea 3 kg air 2 kg sea

DOM mechanical overview http: //wiki. km 3 net. physik. uni-erlangen. de/index. php/OM_Structure Nano beacon Hydrophone Temperature Piezo PMT WP F-L

DOM sensors PMT ETEL Hamamatsu Piezo sensor Hydrophone Compass Nano Beacon WP F-L

DOM electronics • Distribution boards to PMTs • Central logic board Optical line terminator Acoustic board Nano beacon Alluminium plate (cooling, rf shielding) • Power conversion board • Folie Thermal conduction Electric isolation • Cooling shield Alluminium • Upper hemisphere WP F-L

Distribution to / from PMTs Nicknamed; Octopus board Χταπόδια Pulpo Piovra WP F-L

PPM-DOM functions WP F-L

CLB test setup Ethernet Switch CLB ML 605 ML 507 SACLAY test bench GPS LMK 0300 WP F-L

DOM-LCM cable (BEOC) Equipressure cable (PBOF) Penetrator into Optical Module 6 electrical wires (3 x UTP) 2 fibres Bendbright Dry mateable connector on to LCM 2 electrical wires (1 UTP) 2 fibres bendbright 0. 3 m 1 m DC/DC Dry mateable connector 2 x UTP Hydrophone Vent / fill for oil Tube knee Bent limit tube for fiber Position ring Seacon Ti connector Silicon Isolation stud Silicon Titanium house Vin: Vout: Pout: ƞ: Position ring WP F-L 400 Vdc 12 Vdc < 18 W > 90%

PPM-DOM Antares Geographics λ 1 MOD + Drivers λ 4 Li. Nb. O 3 D 1 λ 5 λ 1 1λ CW+1λ AC @1. 25 Gbps) D 2 2 Lasers tunable 50/50 A Li. Nb. O 3 λ 8 SMA D 4 A 3 C 2 λ 8 40 km λ 4 C 2 λ 5 C 2 λ 4 SS-part C 1 λ 1 D 3 +? APD on/off SPM λ 1 PIN λ 5 VOA Antares DWDM crate SMA 80/20 λ 8 Junction Box SMA A&D λ 5 2 x. Cu REAM DOM A LCM ILxx Available wavelengths λ 4= C 33=1550. 92 nm λ 5= C 37=1547. 72 nm λ 6= C 41=1544. 53 nm Sea presentation Jan. Willem Schmelling Existing component Supplement to existing component New component WP F-L Nikhef for KM 3 Ne. T: PPM DOM in Antares, designed by Nikhef Optical team. v 4

On shore DAQ Independent from Antares DAQ, use of evaluation boards

Shore components WP F-L

Integration in LCM crate storey 1 Connectors side § § Converter board Optics Clock board CAMPOW § Acoustics boards not present DAQ board Free slot 3 Free slot 4 CAMETH ARS MB Compass MB § 2 ARS_MB not present (The 3 rd one could be removed) LPB side Install optical components Install a new converter board (380 V/5 V) Control the VOA with DAC on the Compass board (used to set the OM HV) May be optical components splitted in 2 slots WP F-L

Planning mile stones § Planning driven by optical part § All optical part available beginning of April § Electronic boards available in March § PMTs and bases available from end of February § DOM ready Mid May 2012 WP F-L

Status § Project going on smoothly § Optics defined and mainly ordered § Optics on critical path § Detailed integration study in LCM will start § KM 3 Ne. T project with high priority WP F-L