Algorithm and implementation of muon trigger and data transmission system for barrel-endcap overlap region of the CMS detector

Zabołotny, W.; Byszuk, A.

doi:10.1088/1748-0221/11/03/c03004

Cited by 15 publications

(16 citation statements)

References 12 publications

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“…The other modules are optional and can be used for future upgrades of the system. The T2 Clock Distribution module enables the use of the White Rabbit standard [16] to synchronize multiple AMCs and MTCAs with sub-ns accuracy. The JTAG Switch Module allows remote debugging of FPGA devices.…”

Section: Mcord System Descriptionmentioning

confidence: 99%

“…The track and direction of the muon will be calculated in the FPGA basing on coincident hits from different detector layers. The fast and low latency process of a muons trajectory identification will be based on the muon trajectory processor original concept for the Overlap Muon Track Finder [15], [16] in the CMS muon trigger system [17].…”

Section: Fpga Based Muon Triggermentioning

confidence: 99%

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MCORD - MPD Cosmic Ray Detector a new features

et al. 2019

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The main detector system at the Nuclotron-based Ion Collider fAcility (NICA) located in Dubna, Russia is the Multi-Purpose Detector (MPD). For better calibration reason, the MPD needs an additional trigger system for an off-beam calibration of MPD sub-detectors and for rejection (veto) of cosmic muons. The system should also be useful for practical astrophysics observations of cosmic showers. The consortium NICA-PL group defines goals and basic assumptions for the MPD Cosmic Ray Detector (MCORD). This article describes the conceptual design and simulation plans of the MCORD detector based on plastic scintillators with SiPM photodetectors and electronic digital system based on the MicroTCA crate.

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Section: Mcord System Descriptionmentioning

confidence: 99%

Section: Fpga Based Muon Triggermentioning

confidence: 99%

MCORD - MPD Cosmic Ray Detector a new features

et al. 2019

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“…Through its upgrade, the Level-1 muon triggers moved from a muon detector-based scheme (DT, RPC, and CSC) to a geometry-based system of Muon Track Finders: Barrel (BMTF) [8], Overlap (OMTF) [9], and Endcap (EMTF) [10], covering the pseudorapidity range 0 < |η| < 0.83, 0.83 < |η| < 1.23 and 1.24 < |η| < 2.4, respectively. The goal of the new architecture is to bring in together data from the 3 complementary detector technologies early in the track finding procedure to improve p T resolution.…”

Section: Muon Trigger Upgradementioning

confidence: 99%

Design and performance of the upgrade of the CMS L1 trigger

Davignon¹

2019

Proceedings of the 39th International Conference on High Energy Physics — PoS(ICHEP2018)

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At the CMS experiment [1], the trigger system is used to perform an online selection of physics processes of interest whose cross sections are typically orders of magnitude lower than the total proton-proton cross section. The trigger is implemented as a two-level system. First, the Level-1 (L1) [2] reduces the event rate from 40 MHz to 100 kHz with a total latency of 3.8 µs, and consists of custom electronics hardware. Then, the High-Level Trigger (HLT), based on software running on CPUs, subsequently reduces the event rate from about 100 kHz to 1 kHz. To maintain or improve its performance despite increasing LHC luminosity, the CMS L1 trigger subsystem was fully upgraded in 2016 (Phase-1 upgrade) [3].

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“…The original idea of the OMTF algorithm was described in [3] from the perspective of implementation in FPGA devices.…”

Section: Naive Bayes Classifier In the Omtf Algorithmmentioning

confidence: 99%

The algorithm of the CMS Level-1 Overlap Muon Track Finder trigger

Buńkowski

2019

Nuclear Instruments and Methods in Physics Research Section A:

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The CMS Level-1 trigger, based on custom electronics built around FPGA devices, was upgraded in 2016 to achieve the required performance with almost two times higher LHC luminosity than originally designed. The upgraded Level-1 muon trigger merges data from the three muon detectors in the CMS (DT, CSC, and RPC) in the track reconstruction stage-contrary to the legacy trigger which comprised three separate systems each based on one muon detector. This approach allows better use of the detector redundancy and improved measurement of the muon transverse momentum. However, it is particularly challenging in the barrel-endcap transition region, where up to 18 muon chamber layers are present, the detector geometry is complex, and the magnetic field bending the muon tracks is heterogeneous. For this region the Overlap Muon Track Finder (OMTF) uses a novel algorithm based on a naive Bayes classifier. The algorithm identifies the muon tracks and measures their momentum by calculating the probabilities of matching the detector hits to defined transverse momentum hypotheses. The algorithm was tailored to the needs of muon measurements based on the detector data (e.g. to cope with missing hits or multi-muon events) and implementation in FPGA technology. The algorithm details, performance, and optimization methods are discussed in this report.

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Algorithm and implementation of muon trigger and data transmission system for barrel-endcap overlap region of the CMS detector

Cited by 15 publications

References 12 publications

MCORD - MPD Cosmic Ray Detector a new features

MCORD - MPD Cosmic Ray Detector a new features

Design and performance of the upgrade of the CMS L1 trigger

The algorithm of the CMS Level-1 Overlap Muon Track Finder trigger

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