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|15:15 - 15:30|Status and update on absolute calibration of WR-devices and SFP-transceivers|Anders Wallin (VTT), Kalle Hanhijärvi (VTT), Elizabeth Laier English (NPL), Peter Jansweijer (Nikhef)|
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|15:30 - 15:45|Coffee break||
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|15:45 - 16:15|SPEC7 and HPSEC: when Low Phase Noise matters|Peter Jansweijer (Nikhef), Guido Visser (Nikhef)|
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|16:15 - 16:45|A quick tour through the available diagnostic and monitoring tools for White Rabbit Networks|Adam Wujek|
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|16:15 - 16:45|A quick tour through the available diagnostic and monitoring tools for White Rabbit Networks|Adam Wujek (Independent Consultant)|
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|16:45 - 17:15|The Bunch-to-Bucket Transfer System for FAIR - 1st Operation|Dietrich Beck (GSI)|
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|14:00 - 14:30|White-Rabbit-powered applications that will transform telecommunication networks (as well as White Rabbit itself)|Jeroen Koelemeij (VU Amsterdam)|
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|14:30 - 15:00|White Rabbit applications at CERN|Dimitris Lampridis (CERN)|
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|15:00 - 15:15|New White Rabbit developments for Low Level RF systems|Tomasz Włostowski (CERN)|
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|15:15 - 15:30|Cost-effective and traceable time source for high accuracy timing distribution|Jaime Lozano (UGR)|
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|15:15 - 15:30|A complete, out-of-the-box ecosystem to manage your WR network|Adam Wujek (Independent Consultant)|
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|15:30 - 15:45|Coffee break||
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|15:45 - 16:15|Time-Sensitive Networking for aerospace applications|Jorge Sánchez (7S)|
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|16:15 - 16:45|Next generation White Rabbit Switch version 4|Maciej Lipiński (CERN)|
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|15:45 - 16:00|Cost-effective and traceable time source for high accuracy timing distribution|Jaime Lozano (UGR)|
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|16:00 - 16:30|Time-Sensitive Networking for aerospace applications|Jorge Sánchez (7S)|
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|16:30 - 17:00|Next generation White Rabbit Switch version 4|Maciej Lipiński (CERN)|
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## Short abstracts
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- **White-Rabbit-powered applications that will transform telecommunication networks (as well as White Rabbit itself)**: In this talk I will consider several emerging applications of White Rabbit, such as quantum communication and terrestrial networked positioning systems, which have the potential to transform the very nature of existing telecommunication networks. To make this real, however, continued research and development of White Rabbit is going to be crucial, and I will discuss a number of possible White Rabbit upgrades that will be essential for future high-impact applications.
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- **White Rabbit applications at CERN**: A summary of some of the most important WR applications at CERN, including White Rabbit Trigger Distribution (WRTD), the BTrain system for real-time fixed-latency distribution of magnetic field values and the use of WR to distribute RF signals. All these applications benefit from the combination of excellent synchronisation and upper-bound in message latency provided by WR.
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- **New White Rabbit developments for Low Level RF systems**: In 2021, a new Low Level Radio Frequency system has been commissioned for the Super Proton Synchrotron at CERN, relying entirely on WR for ultra-low-jitter RF distribution. The presentation describes the WR components developed within the scope of the LLRF project (eRTM14/15, WR2RF-VME, WR Switch Low Jitter), thanks to which WR can achieve performance (phase stability and phase noise) previously reserved for analog RF distribution systems. A brief description of the hardware, firmware and software as well as the techniques used to improve the WR performance will be also provided.
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- **A complete, out-of-the-box ecosystem to manage your WR network**: When switching from an analog system for synchronization distribution to White Rabbit, coaxial cables are replaced with optic fibers. This technology leap opens new opportunities that were not possible with coaxial cables. For example the live monitoring of synchronization parameters in your installation or how actually the devices in your network are connected. However, there may be also inconveniences after the change. With more and more devices added to the WR network it is getting harder to keep track of the state of the network. Since WR is built on top of well-established network standards every user can build their own solution to manage and monitor their own WR network. There are plenty of tools available on the market. Unfortunately, there is no specific set of tools that can be used as a complete solution which takes into account White Rabbit specificities. Moreover, small and medium-sized teams may not have enough resources to maintain a configuration and management system for a WR network in an efficient way. The author of this presentation would like to survey the interest in the White Rabbit community for a complete and ready to use solution to manage small to middle-sized WR networks.
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- **Cost-effective and traceable time source for high accuracy timing distribution**: A time transfer system is limited by the time reference it is distributing. Most of the timing networks use GNSS receivers as main reference but their accuracy or traceability to UTC is not properly handled. An embedded time source reference with high accuracy and low cost has been developed at the University of Granada based on the Common View technique in order to work as reference for White-Rabbit systems (thus these systems are able to distribute timing without degradation). Our device is traceable to a remote laboratory and it allows to obtain UTC(k), stamping events on a global scale with high accuracy and traceability. These approaches are usually performed with a high-cost atomic clock, but in this case it has been replaced by an oven-controlled oscillator (OCXO) and a high rate of corrections from a local reference. This reduces the cost of synchronization by two orders of magnitude, thus increasing the number of potential users and opening up a range of applications requiring accurate traceable time sources.
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- **Time-Sensitive Networking for aerospace applications**: Avionics communication networks for future aerospace aircraft require greater real time, bandwidth and flexibility while preserving the determinism and reliability expected in space-grade systems. Recently, IEEE 802.1 Time-Sensitive Networking (TSN) has emerged as a non vendor-locked alternative that could supersede the main aerospace onboard communication protocol technologies allowing space technologies to benefit from the convergent, deterministic, interoperable, and standards-based paradigm. This talk starts off by presenting our contribution of a TSN bus solution deployed on the Miura-1 microlauncher capable of delivering the higher bandwidth and flexibility of Gigabit Ethernet over a commercially available, off-the-shelf platform based on the Xilinx Zynq-7000 MPSoC FPGAs, which provides the economical adaptability required by changing microlauncher payloads. To this end, we have designed a lightweight FPGA logic architecture, driven by a real-time operating system (RTEMS) currently pending certification by the European Space Agency (ESA). After that, we will conclude by examining the implications of further enhancing our design with the inclusion of White Rabbit features to the synchronization component of our TSN-based avionics network. We envision that this could lead to the development of more robust networks with greater built-in levels of fault tolerance, streamline the reconfiguration process, or even pioneer novel approaches for distributing high-accuracy timing to scientific payloads.
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- **Next generation White Rabbit Switch version 4**: The presentation will provide an overview of the ongoing development of the hardware for the next generation White Switch v4. It will describe its design specification, architecture and features as well as provide the development status and plans. |
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