Fast synchronous distribution network of data streams for RPC Muon Trigger in CMS experiment

Filipek, Tomasz A.; Poźniak, Krzysztof T.; Kudła, Ignacy M.; Kierzkowski, Krzysztof; Okliński, W.; Romaniuk, Ryszard S.

doi:10.1117/12.610615

Cited by 7 publications

(3 citation statements)

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“…The data from two slave LBs are transmitted to the master LB. The master LB multiplexes the data from slave LBs and from itself and converts them into optical signal (1.6 GHz) [6,7] transmitted through a fibre to the trigger boards (TB) [8] located in the counting room. In total there are 444 fibres, and they vary in length from 40 to 80 m. Since the data from every optical link have to be delivered to two or four TBs, the links are split by splitter boards (SpB, 60 pieces).…”

Section: Rpc Trigger Systemmentioning

confidence: 99%

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Synchronization methods for the PAC RPC trigger system in the CMS experiment

Buńkowski

Poźniak

Bluj

et al. 2007

Meas. Sci. Technol.

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The PAC (pattern comparator) is a dedicated muon trigger for the CMS (Compact Muon Solenoid) experiment at the LHC (Large Hadron Collider). The PAC trigger processes signals provided by RPC (resistive plate chambers), a part of the CMS muon system. The goal of the PAC RPC trigger is to identify muons, measure their transverse momenta and select the best muon candidates for each proton bunch collision occurring every 25 ns. To perform this task it is necessary to deliver the information concerning each bunch crossing from many RPC chambers to the trigger logic at the same moment. Since the CMS detector is large (the muon hits are spread over 40 ns), and the data are transmitted through thousands of channels, special techniques are needed to assure proper synchronization of the data. In this paper methods developed for the RPC signal synchronization and synchronous transmission are presented. The methods were tested during the MTCC (magnet test and cosmic challenge). The performance of the synchronization methods is illustrated by the results of the tests.

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Section: Rpc Trigger Systemmentioning

confidence: 99%

“…The transmitted signature is automatically compared with the local one by module (8). If a discrepancy is detected, the corrupted data are blocked (zero value is sent to the output).…”

Section: The Parametrized Receiver Modulementioning

confidence: 99%

Synchronization methods for the PAC RPC trigger system in the CMS experiment

Buńkowski

Poźniak

Bluj

et al. 2007

Meas. Sci. Technol.

Self Cite

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show abstract

“…The data are transmitted to the counting room [60]. The splitters distribute the optical links to over 100 trigger boards [61][62][63], where data deconcentration is done. Here, the particle collision image, registered previously in the RPCs, is reconstructed.…”

Section: Networked Structure Of the Tridaq Measurement Systemmentioning

confidence: 99%

Diagnostic layer integration in FPGA-based pipeline measurement systems for HEP experiments

Poźniak¹

2007

Meas. Sci. Technol.

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Integrated triggering and data acquisition systems for high energy physics experiments may be considered as fast, multichannel, synchronous, distributed, pipeline measurement systems. A considerable extension of functional, technological and monitoring demands, which has recently been imposed on them, forced a common usage of large field-programmable gate array (FPGA), digital signal processing-enhanced matrices and fast optical transmission for their realization. This paper discusses modelling, design, realization and testing of pipeline measurement systems. A distribution of synchronous data stream flows is considered in the network. A general functional structure of a single network node is presented. A suggested, novel block structure of the node model facilitates full implementation in the FPGA chip, circuit standardization and parametrization, as well as integration of functional and diagnostic layers. A general method for pipeline system design was derived. This method is based on a unified model of the synchronous data network node. A few examples of practically realized, FPGA-based, pipeline measurement systems were presented. The described systems were applied in ZEUS and CMS.

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Photonics applications and web engineering: SPIE-PSP WILGA Symposium series

Romaniuk

2010

SPIE Proceedings

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SPIE -PSP WILGA Symposium gathers two times a year in January and in May new adepts of advanced photonic and electronic systems. The event is oriented on components and applications. WILGA Symposium on Photonics and Web Engineering is well known on the web for its devotion to "young research" promotion under the eminent sponsorship of international engineering associations like SPIE and IEEE and their Poland Sections or Counterparts. WILGA is supported by the most important national professional organizations like KEiT PAN and PSP-Photonics Society of Poland. The Symposium is organized since 1998 twice a year. It has gathered over 4000 young researchers and published over 2000 papers mainly internationally, including more than 900 in 10 published so far volumes of Proc. SPIE. This paper, in two parts, is a digest of WILGA Symposium Series (part 1) and WILGA 2010 summary (part 2). Part 1 (this one) treats WILGA Photonics Applications characteristics over the period 1998-2010. Part 2 presents a short report on the XXVth and XXVIth Symposia held consecutively in January and May 2010. The events took place on 29-30 January at the Faculty of Electronics and Information Technologies of Warsaw University of Technology and on 24-30 May in Wilga Village near Warsaw. Both meetings gathered around 200 young researchers with 150 papers presented on current subjects of advanced photonics and electronics issues. Apart of young researchers the Wilga Symposium is always richly attended by students' mentors and tutors.

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Fast synchronous distribution network of data streams for RPC Muon Trigger in CMS experiment

Cited by 7 publications

References 0 publications

Synchronization methods for the PAC RPC trigger system in the CMS experiment

Synchronization methods for the PAC RPC trigger system in the CMS experiment

Diagnostic layer integration in FPGA-based pipeline measurement systems for HEP experiments

Photonics applications and web engineering: SPIE-PSP WILGA Symposium series

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