G. RICCOBENE INFN-LNS KM3NET CALIB WG LEADER - CU PDR 02/07/2019 G. RICCOBENE INFN-LNS - CERN INDICO
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G. Riccobene INFN-LNS
KM3NeT Calib WG leader
G. Riccobene INFN-LNS CU PDR 02/07/2019
KM3NeT: the giant scale neutrino telescope
neutrino telescope Network of cabled observatories located in deep waters
of the Mediterranean Sea.
Array of
optical sensors
Centrally managed: common hardware, software, data
handling and control
Cherenkov light
Astronomy: ARCA @ Capo Passero
muon Phase 1 under construction, Phase 2 defined:
Cable to shore 2 building blocks (few km among the blocks)
interaction 115 Detection Units(DU) / block
18 DOMs (36 m inter-DOM)
neutrino 90 m inter-DU distance
1 km3 volume
Oscillations and Mass Hierarchy: ORCA @ Toulon
1 building block
115 detection Units
18 DOMs (9 m inter-DOM)
6 Mton volume
G. Riccobene INFN-LNS CU PDR 02/07/2019
KM3NeT: The Detector
750 m
Digital Optical Module (DOM)
A fly’s eye light detector Inside
a 17’’ glass sphere 2 km2
Plus:
compass, acoustic sensor, KM3NeT - ARCA
front-end and data Detection Unit 230 Detection Units
transmission electronics A vertical slender sling KM3NeT - ORCA
with 18 DOMs 115 Detection Units
1 hydrophone at each 260 W
Detection Unit base 400 Mbps Data sent in real-time to shore for analysis
G. Riccobene INFN-LNS CU PDR 02/07/2019
KM3NeT: The Sites
ORCA: 2500 m wd, 45 km offshore ARCA: 3500 m wd, 95 km offshore
230 DUs
115 DUs Footprint: 2 x 1000 x 1000 m
Footprint: 300 x 300 m height: 700 m
height: 300 m inter DU distance (average): 80 m
inter DU distance: 25 m
Phase 1:
Phase 1: 24 DUs
7 DUs
G. Riccobene INFN-LNS CU PDR 02/07/2019
KM3NeT: Challenges
Transportation (truck, ship)
“Standard”
Deployment and Recovery (ship, rov)
Design: safe monoueving
Marking: rigging, lashing, connection, disconnection, grabbing
Labelling: WiA, WiW
Interaction with third parties: certifications
Operation (seawater)
“No” vibration
Constant “low” temperature (13.5°)
High External Pressure
Conductive and “live” medium: Corrosion, short circuit propagation
No maintenance during detector operation lifetime!
G. Riccobene INFN-LNS CU PDR 02/07/2019
This Review: Who are we Miles Lindsay Clark (APC): Technical Coordinator of KM3NeT Ernst Jan Buis (TNO): Chief System Engineer of KM3NeT Giorgos Androulakis (Demokritos): QA/QC Task leader of KM3NeT Giorgio Riccobene: Calibration WG leader IU ORCA: P. Keller (L), Ph. Lagier, A. Cosquer - CPPM CB ARCA: M. Anghinolfi (L), R. Cereseto, S. Ottonello – INFN Genova Laser Beacon: R. Le Breton (L), A. Creusot, A. Ilioni, S. Boutonet - APC CB ORCA: A. Ilioni (L), C. Boutonet, S. Colonges, L. Confucius – APC IU ARCA: Rovelli (L), C. D’Amato, A. Grmek – INFN LNS G. Riccobene INFN-LNS CU PDR 02/07/2019
This Review: what we want
Deals with mechanics of the assets (but suggestions on others are welcome!)
We ask you to help us to:
verify that materials and design are OK to fulfil the request
all documentation is in place and clear
Tell us clearly:
what is good
what is “wrong”
what is not clear
what we must do, yet
what would be diligent to do
G. Riccobene INFN-LNS CU PDR 02/07/2019
This Review: Documentation
We use CERN indico
https://indico.cern.ch/event/829590/
and vydio
https://vidyoportal.cern.ch/join/3moTzTrv6r
Documents will be stored on Google Drive
https://drive.google.com/open?id=1OjRW4kaF8G2Ngfut4BPAuBsWFBGerTQf
G. Riccobene INFN-LNS CU PDR 02/07/2019
This Review: Documentation On Indico and Gdrive: Calibration_Unit_Preliminary_Design_Review_PDR.zip On Gdrive: KM3NeT_CALIB_2019_103_MechReview_RIDtemplate.xlsx https://drive.google.com/open?id=1rgdelCxhyGiOxgLkhSkhr90 CrqbSRlcczCmUswnRrnQ G. Riccobene INFN-LNS CU PDR 02/07/2019
KM3NeT at Capo Passero: The ARCA Calib Unit
Calibration Base
Lifetime 20 y 300 m
electro-optical interlink
cable CB-JB
Teldyne ODI NRH
CB electronics/optics container
(DU base design)
Host 2 instruments
Hydrophone -> Acoustic Positioning System
M.Anghinolfi INFN-Genova Acoustic Beacon -> Acoustic Positioning System
Permits connection to IU
G. Riccobene INFN-LNS CU PDR 02/07/2019KM3NeT at Capo Passero: The ARCA Calib Unit
Instrumentation Unit
Recovered evey 2/3 years for instrument recalibration and battery change
A.Rovelli INFN-LNS
Base of the IU: design inherited from ITF and SHB
Working at CP site since January 2019
G. Riccobene INFN-LNS CU PDR 02/07/2019KM3NeT at Toulon: The ORCA Calibration Unit
Calibration Base
Lifetime 15 y
Host 3 instruments
Laser Beacon -> Time Calibration
Hydrophone -> Positioning System
Acoustic Beacon -> Positioning System
Permits connection to IU A. Ilioni APC
G. Riccobene INFN-LNS CU PDR 02/07/2019KM3NeT at Toulon: The ORCA Calib Unit
Instrumentation Unit P. Keller CPPM
Recovered evey 2/3 years for instrument recalibration and battery change
Base of the IU
IU electronics
vessel
(ANTARES)
Base of the IU: design inherided from ITF and SHB
G. Riccobene INFN-LNS CU PDR 02/07/2019The Laser Beacon
Lifetime
20 years
Emit short pulses of laser light to Flange
illuminate all DUs at the “same” time
Laser
Same Design for Titanium cylinder
ORCA (Calibration Base) Quartz rod
ARCA (JB) LPMI+
O-rings
Flange
Laser board control
Connector
Internal Structure
O-rings
R. Le Breton APC
G. Riccobene INFN-LNS CU PDR 02/07/2019PBS G. Riccobene INFN-LNS CU PDR 02/07/2019
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