The following email has been sent to REAL, Diego:
===
Dear Diego Real,
The submission of your abstract has been successfully processed.
Abstract submitted: https://indico.cern.ch/event/192695/call-for- abstracts/my-abstracts.
Status of your abstract: https://indico.cern.ch/event/192695/call- for-abstracts/367/.
See below a detailed summary of your submitted abstract:
Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics
Submitted by: REAL, Diego
Submitted on: 28 February 2014 16:55
Title: KM3NeT On-shore Station and Broadcast Customization of White- Rabbit Switches Towards Optimizing Communication Resources for Shared Control Link
Abstract content KM3NeT collaboration aims to build a cubic-kilometre scale neutrino telescope at the bottom of the Mediterranean Sea. KM3NeT is composed of an On-Shore Station which connects via an optical network to a matrix of underwater sensors, called Digital Optical Modules (DOMs). Bulk data will continuously flow from the sensors to the On-Shore Station and only a limited amount of bandwidth will be used for Slow Control. Therefore the physical topology of the optical network is asymmetric in order to significantly reduce the cost of the undersea electrical/optical cable. The same network is used to synchronize the sensors (within 1 ns) using White Rabbit technology. The requirements for timing accuracy and the asymmetry of the network make the system highly complex. Every single DOM has a unidirectional 1Gb/s uplink through which it delivers the acquired data to the On-Shore Station. The on-shore station has a unique unidirectional 1 Gb/s downlink to reach all the DOMs, this is called the broadcast or Slow Control (SC) link. This topology highly reduces the communication resource cost, but it requires customizing the communication elements and modifying the White Rabbit (WR) protocol that is embedded in them, especially at the On-Shore Station side. The present article explains the On-Shore station of KM3NeT and the modifications needed in the WR switches in order to implement the broadcast in detail.
Summary
Primary Authors: JANSWEIJER, Peter Paul Maarten (NIKHEF (NL)) peterj@nikhef.nl REAL, Diego (IFIC) real@ific.uv.es BELIAS, Tass (Institute for Astroparticle Physics (GR)) anastasios.belias@cern.ch MANOLOPOULOS, Konstantinos (University of Athens) kmanolo@phys.uoa.gr Mr. DIAZ, Javier (Seven Solutions) javier@sevensols.com Mr. MARIN, Emilio (Seven Solutions) emilio@sevensols.com Mr. MENDEZ, Miguel (Seven Solutions) mmendez@sevensols.com
Co-authors:
Abstract presenters: Mr. MENDEZ, Miguel
Track classification: Experiments: 2c) Detectors for neutrino physics
Presentation type: --not specified--
Comments: This talk is presented on behalf of the KM3NeT collaboration