Timing and Triggering System Prototype for the XFEL Project

Hidvégi, A.; Geßler, P.; Rehlich, K.; Böhm, C.

doi:10.1109/tns.2011.2151205

Cited by 18 publications

(8 citation statements)

References 2 publications

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“…Fortunately, timing and synchronization problems have been deeply considered and solved at many accelerator science facilities [59][60][61][62] . The high-power laser community can learn from and adopt prior art in this area.…”

Section: Timing and Synchronizationmentioning

confidence: 99%

Control systems and data management for high-power laser facilities

Feister,

Cassou,

Dann

et al. 2023

High Pow Laser Sci Eng

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The next generation of high-power lasers enables repetition of experiments at orders of magnitude higher frequency than what was possible using the prior generation. Facilities requiring human intervention between laser repetitions need to adapt in order to keep pace with the new laser technology. A distributed networked control system can enable laboratory-wide automation and feedback control loops. These higher-repetition-rate experiments will create enormous quantities of data. A consistent approach to managing data can increase data accessibility, reduce repetitive data-software development and mitigate poorly organized metadata. An opportunity arises to share knowledge of improvements to control and data infrastructure currently being undertaken. We compare platforms and approaches to state-of-the-art control systems and data management at high-power laser facilities, and we illustrate these topics with case studies from our community.

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Section: Timing and Synchronizationmentioning

confidence: 99%

Control systems and data management for high-power laser facilities

Feister,

Cassou,

Dann

et al. 2023

High Pow Laser Sci Eng

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“…The latter case, on the other hand, requires transmission lines to be matched in length in order to obtain a fully balanced clock tree [17]- [19], which can be difficult when the number of acquisition nodes to be synchronized is large [20], forcing additional global timing calibrations [21]. Further problems arise when there is a large distance between system nodes, as fluctuating operating conditions such as temperature cause a variation of the delay of long lines [22].…”

Section: Introductionmentioning

confidence: 99%

“…The idea of individually self-calibrating, bidirectional links has been applied recently following the same principle [24]- [26] or variations thereof [22], [27], [28] in the generic setting of large scale, distributed readout systems for physics experiments, with the main goal of compensating for drifts in the propagation delay of long transmission lines. However, this clocking method carries additional benefits for smaller systems like PET, namely: vastly reduced calibration needs, deterministic latency, and detector mobility with simplified cabling.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a Modular PET System Architecture with Synchronization over Data Links

Aliaga

Bosch

Monzó

et al. 2014

IEEE Trans. Nucl. Sci.

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Abstract-A DAQ architecture for a PET system is presented that focuses on modularity, scalability and reusability. The system defines two basic building blocks: data acquisitors and concentrators, which can be replicated in order to build a complete DAQ of variable size. Acquisition modules contain a scintillating crystal and either a position-sensitive photomultiplier (PSPMT) or an array of silicon photomultipliers (SiPM). The detector signals are processed by AMIC, an integrated analog front-end that generates programmable analog outputs which contain the first few statistical moments of the light distribution in the scintillator. These signals are digitized at 156.25 Msamples/s with free-running ADCs and sent to an FPGA which detects single gamma events, extracts position and time information online using digital algorithms, and submits these data to a concentrator module. Concentrator modules collect single events from acquisition modules and perform coincidence detection and data aggregation. A synchronization scheme over data links is implemented that calibrates each link's latency independently, ensuring that there are no limitations on module mobility, and that the architecture is arbitrarily scalable. Prototype boards with both acquisition and concentration functionality have been built for evaluation purposes. The performance of a small PET system with two detectors based on continuous scintillators is presented. A synchronization error below 50 ps rms is measured, and energy resolutions of 19% and 24% and timing resolutions of 2.0 ns and 4.7 ns FWHM are obtained for PMT and SiPM photodetectors, respectively.

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“…The EuXFEL facility will generate coherent and intense Xray flashes with a ~4.5 MHz bunch frequency [3]. The Timing Receiver (TR) board [4], housed in the same crate as the CC system delivers the bunch clock which is the same frequency as the bunch frequency or double that frequency at ~9 MHz to the CC through the MTCA.4 backplane on TCLK1 line [9]. Fig.…”

Section: Introductionmentioning

confidence: 99%

Experiences with the MTCA.4 solution for the EuXFEL clock and control system

Motuk

Postranecky

Warren

et al. 2012

2012 18th IEEE-NPSS Real Time Conference

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Abstract-The clock and control (CC) system for the EuXFEL megapixel detectors consists of a multi-purpose MTCA.4 AMC card with a Xilinx FPGA and a custom designed Rear Transition Module (RTM) which provides the CC functionality. The system resides in a MTCA.4 crate with the Timing Receiver (TR) board and synchronises the DAQ system to the general EuXFEL timing. This paper presents the experiences with the prototype system in addition to describing the RTM hardware and the CC system firmware in detail. The tests that have been performed to validate the basic MTCA.4 specifications related functionality are presented first. The next stage of tests involve confirming the system functionality by using the TR board as it would be in the EuXFEL DAQ system and a development board to simulate a Front End Electronics (FEE) unit. The performance metrics in terms of jitter and bit error rates for FEE communication are presented. As a result of the performance tests, the improvements and modifications to the current hardware for the final system are outlined in the conclusions.

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Timing and Triggering System Prototype for the XFEL Project

Cited by 18 publications

References 2 publications

Control systems and data management for high-power laser facilities

Control systems and data management for high-power laser facilities

Evaluation of a Modular PET System Architecture with Synchronization over Data Links

Experiences with the MTCA.4 solution for the EuXFEL clock and control system

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