SODA: Time distribution system for the PANDA experiment

Konorov, I.; Angerer, H.; Mann, A.; Paul, S.

doi:10.1109/nssmic.2009.5402172

Cited by 19 publications

(14 citation statements)

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“…Instead, all PANDA subsystems use a freely streaming data acquisition concept where the synchronization is performed using SODAnet [2,3], a high resolution global time distribution system. For event building, a two-stage approach is used.…”

Section: Panda Data Acquisition Challengesmentioning

confidence: 99%

Data Acquisition and Online Event Selection for the PANDA Experiment

Kühn¹,

Lange²,

Liang³

et al. 2017

Proceedings of the 12th International Conference on Low Energy Antiproton Physics (LEAP2016)

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The PANDA experiment at FAIR features a comprehensive experimental program based on a high quality antiproton beam and a state-of the art detector. Luminosities exceeding 10 32 /cm 2 /s leading to event rates above 20 MHz require a novel approach to data acquisition and real-time event selection. After digitisation with sampling ADCs, the data is pre-processed in front-end electronics performing feature extraction and data compression. After this stage, the raw data rate still exceeds 200 GB/s. Event filtering after full online reconstruction of the events will be performed in two stages using dedicated FPGA based hardware, also utilised in the Belle II experiment at KEK, and a server/GPU farm. Since most physics channels of interest have small cross sections when compared to the total annihilation cross section, the aim is to reduce the raw data rate by three orders of magnitude. A complication arises from the large event rate leading to partial overlap of events. This is of particular importance for slow detectors, such as the straw tube tracker of PANDA.

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Section: Panda Data Acquisition Challengesmentioning

confidence: 99%

Data Acquisition and Online Event Selection for the PANDA Experiment

Kühn¹,

Lange²,

Liang³

et al. 2017

Proceedings of the 12th International Conference on Low Energy Antiproton Physics (LEAP2016)

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“…The readout electronics therefore have to work without a central trigger. Instead a timestamping system with 20 ps timing resolution [11] will be used to generate virtual high level triggers for event preselection in a massive parallel computing network [12]. Various options for the frontend electronics are under investigation [13].…”

Section: The Novel Focusing Disc Dircmentioning

confidence: 99%

The Focusing Disc DIRC for the PANDA experiment at FAIR

Cowie

Foehl

Glazier

et al. 2011

J. Phys.: Conf. Ser.

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“…The connection to front-end modules is realized via 8 SFP fiber transceivers, which defines also the form-factor of the module to a single-width, full-size MicroTCA card. To allow a direct interface to a time distribution system like SODA (Synchronization Of Data Acquisition) [8], the SFP links are routed through an input crosspoint stage, based on three Mindspeed analog crosspoint switches. Thus, a SODA uplink can be supplied either via SFP or a backplane signal and can be broadcasted transparently to all front-end destinations.…”

Section: The Microtca Buffer Modulementioning

confidence: 99%

An AdvancedTCA based data concentrator and event building architecture

Mann

Konorov

Goslich

et al. 2010

2010 17th IEEE-NPSS Real Time Conference

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To address the data rate requirements for upcoming experiments in high energy physics, we present a configurable architecture for data concentration and event building, based on the AdvancedTCA and MicroTCA standards. The core component is a µTCA based module which connects a Lattice ECP3 FPGA to up to 8 front panel fiber ports for data input from front-end electronics. In addition, the fiber ports can distribute synchronization clock and configuration information from a central time distribution system. To buffer the incoming data, the module provides up to 2 soDIMM sockets for standard DDR3 memory modules. With different firmware functionality, the buffer module can then interface to a µTCA shelf backplane via e.g. PCI Express. To allow event building for more than 8 input links, 4 buffer modules can be combined on an ATCA carrier card, which connects to the high speed links on the µTCA connector. The connections between the 4 µTCA cards and the ATCA backplane can then be configured dynamically by a passive crosspoint switch on the ATCA carrier card. Thus, multiple event building topologies can be configured on the carrier card and within the full ATCA shelf to adapt to different system sizes and communication patterns.

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SODA: Time distribution system for the PANDA experiment

Cited by 19 publications

References 0 publications

Data Acquisition and Online Event Selection for the PANDA Experiment

Data Acquisition and Online Event Selection for the PANDA Experiment

The Focusing Disc DIRC for the PANDA experiment at FAIR

An AdvancedTCA based data concentrator and event building architecture

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