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Javier Serrano (CERN)27/05/2026, 10:00
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Amanda Diez Fernandez (CERN), Javier Serrano (CERN)27/05/2026, 10:05
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Adam Artur Wujek (CERN), Maciej Marek Lipinski (CERN)27/05/2026, 10:20
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Robert Noseworthy (UNH Interoperability Labs)27/05/2026, 11:00
The University of New Hampshire Interoperability Labs (UNH‑IOL) continues its role as a neutral, third‑party contributor to the White Rabbit (WR) ecosystem, supporting both open‑source development and multi‑vendor interoperability. Building on prior WR Workshop presentations covering conformance testing methodology, interoperability validation, and open WR community engagement, this talk...
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Daniel Chung, Maciej Marek Lipinski (CERN)27/05/2026, 11:25
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Daniel Chung, Karmjit Banga (IQD), Nick Amey27/05/2026, 11:45
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Tristan Gingold (CERN)27/05/2026, 13:30
Starting and experimenting with White Rabbit was possible using a starter kit based on the SPEC board. However, the SPEC design is old (more than 10 years)and based on an old FPGA (Spartan 6, which is supported only by ISE toolchain).
The need for a new hardware kit is still present. But to reduce costs
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and to avoid managing low-volume production, we'd better to use an
already available... -
Konstantinos Asteriou27/05/2026, 14:00
The servo is a control algorithm that aligns the phase of the
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timeReceiver White Rabbit reference clock with the timeTransmitter
clock, based on timing information exchanged via PTP messages.
This process involves several steps. The White Rabbit reference clock is
locked to the timeTransmitter clock. Next it is determined (SYNC_TAI, SYNC_NSEC) which White Rabbit reference clock cycle... -
Michal Spacek (Czech Technical University (CZ))27/05/2026, 14:20
A quick tour through results of White Rabbit Switch temperature dependency with preliminary results of offline and online correction.
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Claudio Calosso27/05/2026, 14:40
Modern time and frequency systems rely extensively on digital electronics for signal distribution and synchronization. Understanding the noise contribution of digital components is therefore important to assess system performance.
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This contribution focuses on noise in logic devices, such as FPGA-based circuits, introducing a simple framework to describe phase and time fluctuations and their... -
Daniel Chung27/05/2026, 15:05
The requirements for time synchronization in communication networks have become increasingly stringent. Applications such as power distribution and telecommunications demand accuracies which can be tight as 100 ns. GNSS-based methods can achieve this but are susceptible to jamming and spoofing. Wired solutions like the Precision Time Protocol (PTP), White Rabbit (WR), or ELSTAB also show...
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Mikolaj Sowinski (TechnoSystems)27/05/2026, 15:45
Sinara and DIOT provide a concrete opportunity to bring White Rabbit timing into a broader class of scientific control systems, including—but not limited to—quantum computing and quantum networking. The White Rabbit Timing proposal already identifies the need for a reusable layer above WR, with APIs, test programs, documentation, and demonstrators that make precise timing easier to adopt. This...
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Reindert Hommes (Tallgrass)27/05/2026, 16:05
This presentation focuses on the practical implications of deploying a White Rabbit-based commercial Time as a Service network. We address topics including DWDM filter design, firewalls, bookkeeping, and silent errors — the operational details that determine reliability.
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Our service is scoped strictly to T&F transport, with 1PPS and 10MHz as the customer demarcation point. This clean boundary... -
Fabio Sansone27/05/2026, 16:25
The Southern Wide Field Gamma-ray Observatory (SWGO) is a next-generation ground-based array employing the Water Cherenkov technique for gamma-ray detection. Planned at 4,770 m a.s.l. in Chile’s Atacama Astronomical Park, SWGO will cover energies from hundreds of GeV up to the PeV range, complementing northern observatories such as the High-Altitude Water Cherenkov Observatory (HAWC) and the...
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Jean Michel Friedt (Femto-st)27/05/2026, 16:45
White rabbit is most often used to distribute the traditional 10 MHz and 1-PPS, possible for synchronizing instruments accepting such signals as input.
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However, many components such as RF frontends need to operate at others clock frequencies and lack the ability to synchronize on a PPS: while being syntonized, their use of dividing PLLs introduces nondeterministic phase and hence time... -
Istvan Baumann (SCK-CEN)27/05/2026, 17:25
MYRRHA is an accelerator-driven research reactor at SCK CEN (Belgium) whose timing system will be based on White Rabbit and the White Rabbit Event Node. At SCK CEN, we have ported the White Rabbit Event Node project to the DAMC-FMC2ZUP mTCA AMC card. In this implementation, the host applications run on the APU of the Zynq UltraScale+ MPSoC instead of an external CPU.
This presentation...
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Dietrich Beck (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))27/05/2026, 17:45
WR at GSI and FAIR: Status Report
At GSI, the White Rabbit based General Machine Timing (GMT) System is
in productive use since 2022 and includes more than 70 White Rabbit
switches and about 500 nodes.As the first FAIR buildings of the upcoming FAIR facility are complete,
installation of White Rabbit equipment on the FAIR site has started.This presentation gives a short...
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Adam Artur Wujek (CERN)27/05/2026, 18:05
Update on real-life WR performance evaluation for LHC experiments.
Quick summary on the work presented last year by Lilith Kafka[1] and new developments that include monitoring of offset in a chain of WR switches and monitoring of long links (~10km) at CERN.[1] - https://indico.cern.ch/event/1524513/contributions/6556133/
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Javier Tegedor (JRC)28/05/2026, 08:45
The Italian Quantum Backbone (IQB)—an ≈ 1800 km optical‑fiber network that is part of the European Quantum Communication Infrastructure (EuroQCI)—was extended in 2025 to connect the National Metrology Institute of Italy (INRiM) with the European Commission Joint Research Centre (JRC) in Ispra. This presentation evaluates the preliminary timing performance of the White Rabbit (WR) link over...
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Mr Antoine Back (IJCLab - CNRS/IN2P3 - Université Paris-Saclay)28/05/2026, 09:05
We present the latest advancements in White Rabbit protocol integration on the Idrogen platform, based on an Altera Arria10 FPGA, with a focus on long-distance synchronization applications. Two major use cases are highlighted:
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First, the synchronization of a pulsed laser over 100 km, achieving picosecond-level phase stability—a critical requirement for applications such as particle... -
Paul Klop (SURF)28/05/2026, 09:25
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Gijs Schoonderbeek (ASTRON)28/05/2026, 09:45
Status of the Ethernet Receivers at ASTRON
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At ASTRON we are developing White Rabbit–enabled Ethernet receivers in which the ADC is located close to the antenna. Two receiver types are under development: a low-frequency receiver with bandwidths up to 100 MHz, and a high-bandwidth receiver exceeding 1 GHz. Initial prototypes are operational and able to stream antenna data, providing a basis for... -
Josef Vojtěch (CESNET), Raimena Veisllari (SIKT), Vladimír Smotlacha28/05/2026, 10:251
We present the results of the “Long‑Haul White‑Rabbit (WR) Incubator” project, encompassing both test‑bed experiments and trial deployment on the GÉANT and large scale real deployment on the CESNET operational networks.
First, we demonstrate a 400 km long‑haul WR transfer on a laboratory‑spooled test‑bed, evaluating several reach‑extension strategies. These findings informed the subsequent...
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Raphaël Marion (Royal Observatory Belgium)28/05/2026, 11:00
During this talk, after a quick introduction of the initial project, I'll expose the technical choices made for the roll-out of the first WR links in Belgium.
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Obtained performances as well as scientific and commercial perspectives will be also discussed. -
Neelam Neelam (LTE, Observatoire de Paris)28/05/2026, 11:25
Precise time and frequency signals are required for many applications such as navigation, cyber security, Internet of Things, and advanced scientific research in high-energy physics, astronomy, quantum telecommunications, etc. In France, the national time and frequency
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reference signals are generated at Observatoire de Paris/Laboratoire Temps Espace/LNE-OP.
REFIMEVE is a French national... -
Andrzej Wojnar (Salumanus)28/05/2026, 13:451
My presentation explores the latency compensation mechanism implemented
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in QSFP28 100G coherent transceivers to actively compensate for internal
phase shifts and data mapping delays. By utilizing internal DSP
measurements and dynamic hardware correction, the module successfully
reduces latency variation to meet highest PTP requirements. We will
discuss how integrating such predictable,... -
Roel de Vries (Fugro)28/05/2026, 14:00
Combining WhiteRabbit with AtomiChron HA (High Accuracy) real-time PPP GNSS service, allows for WhiteRabbit links to extend beyond the need for Fiber Optic availability and connect WR networks anywhere in the world. Real-time PPP enables WR links by jumping any distance at similar performance levels to WR. Besides this possible hybrid approach combining the 2 technologies, the UTC(k) reference...
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Bartek Kropiewnicki (Oscilloquartz)28/05/2026, 14:20
Telecom networks increasingly rely on highly accurate time distribution to support mobile fronthaul, critical infrastructure synchronization, and emerging 5G/6G use cases. To address these needs, telecom standards define PTP High Accuracy Links, opening the door for sub‑nanosecond timing techniques traditionally associated with research and fintech environments.
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This presentation discusses... -
Sougandh Kannoth Mavila28/05/2026, 14:40
We have developed an upgrade to White Rabbit (WR) that solves ambiguities in networks were the active Grand Master (GM) is backed up by several 'passive' GMs, each synchronized to their own reference clock. In such networks, each clock defines a different reference time (often with relative offsets of nanoseconds to microseconds). These offsets will cause severe time jumps when failing over...
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Unai Sainz (EHU)28/05/2026, 15:00
Integrating SPAD-based photon-counting capabilities with sub-nanosecond distributed synchronization provided by an Ethernet network managed through the White Rabbit protocol offers significant advantages. By merging these two technologies, we introduce a novel concept termed White Rabbit time-resolved SPAD (WR-TR-SPAD). In this regard, we aim to develop an infrastructure that operationalizes...
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Dr Vitalii Sliusar (University of Geneva)28/05/2026, 15:20
High-precision (nanosecond- to picosecond-scale) time synchronization in astronomy is used mainly in radio interferometry (e.g., VLBI) and Imaging Atmospheric Cherenkov Telescopes (IACTs), which time-tag air showers from cosmic gamma rays. In contrast, intensity interferometry in the visible requires stricter timing, as correlations of intensity fluctuations measured across telescope baselines...
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Javier Serrano (CERN)28/05/2026, 15:40
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Raimena Veisllari (SIKT)
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Annick Teepe
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