The DAQ needle in the big-data haystack

Meschi, E.

doi:10.1088/1742-6596/664/8/082032

Cited by 7 publications

(5 citation statements)

References 11 publications

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“…The detector (E) plays the role of a sensor, in modern terms. As another paper explains it [14], it is connected to a programmable trigger (HR, for High Resistance) and analog front-end electronics (G, for Geiger tube), through which the signal is acquired by an amplifier (vacuum tube, which plays a role of an analog processor), and then directed to an actuator, which is a relay (R), and through a local circuit (LC) recorded on analog media (P for Pen).…”

Section: Principles Of Data Acquisition and Controlmentioning

confidence: 96%

From Camac to Wireless Sensor Networks and Time-Triggered Systems and Beyond: Evolution of Computer Interfaces for Data Acquisition and Control. Part I

Zalewski¹

2016

IJC

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The objective of this paper is to present a historical overview of design choices for data acquisition and control systems, from the first developments in CAMAC, through the evolution of their designs operating in VMEbus, Firewire and USB, to the latest developments concerning distributed systems using, in particular, wireless protocols and time-triggered architecture. First part of the overview is focused on connectivity aspects, including buses and interconnects, as well as their standardization. More sophisticated designs and a number of challenges are addressed in the second part, among them: bus performance, bus safety and security, and others.

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Section: Principles Of Data Acquisition and Controlmentioning

confidence: 96%

From Camac to Wireless Sensor Networks and Time-Triggered Systems and Beyond: Evolution of Computer Interfaces for Data Acquisition and Control. Part I

Zalewski¹

2016

IJC

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“…Profiting from the large amounts of physical memory that can be installed in modern servers at a relatively modest cost, the file-based HLT infrastructure (F3), deployed in Run-2 [12], enabled CMS to achieve a high level of decoupling between the event builder, the HLT algorithms, running inside the same reconstruction framework (CMSSW) also used for offline reconstruction and analysis, and the storage and transfer system responsible for the aggregation of HLT-accepted events for subsequent transfer to Tier-0. This is achieved by storing raw data of complete events into files in a memory-based file system on the event builder nodes 3 .…”

Section: Hlt Data Distribution and Collectionmentioning

confidence: 99%

The Phase-2 Upgrade of the CMS Data Acquisition

et al. 2021

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The High Luminosity LHC (HL-LHC) will start operating in 2027 after the third Long Shutdown (LS3), and is designed to provide an ultimate instantaneous luminosity of 7:5 × 1034 cm−2 s−1, at the price of extreme pileup of up to 200 interactions per crossing. The number of overlapping interactions in HL-LHC collisions, their density, and the resulting intense radiation environment, warrant an almost complete upgrade of the CMS detector. The upgraded CMS detector will be read out by approximately fifty thousand highspeed front-end optical links at an unprecedented data rate of up to 80 Tb/s, for an average expected total event size of approximately 8 − 10 MB. Following the present established design, the CMS trigger and data acquisition system will continue to feature two trigger levels, with only one synchronous hardware-based Level-1 Trigger (L1), consisting of custom electronic boards and operating on dedicated data streams, and a second level, the High Level Trigger (HLT), using software algorithms running asynchronously on standard processors and making use of the full detector data to select events for offline storage and analysis. The upgraded CMS data acquisition system will collect data fragments for Level-1 accepted events from the detector back-end modules at a rate up to 750 kHz, aggregate fragments corresponding to individual Level- 1 accepts into events, and distribute them to the HLT processors where they will be filtered further. Events accepted by the HLT will be stored permanently at a rate of up to 7.5 kHz. This paper describes the baseline design of the DAQ and HLT systems for the Phase-2 of CMS.

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“…This clearly illustrates the trend towards moving more complex algorithmic processing into the online systems. A possible evolution of TDAQ architectures could lead to detectors with extremely deep asynchronous or even virtual pipelines, where data streams from the various detector channels are analysed and indexed in situ quasi-real-time, using intelligent, pattern-driven data organization, and the final selection is operated as a distributed "search for interesting event parts" [173].…”

Section: Advanced Concepts In Electronics Trigger and Daqmentioning

confidence: 99%

Next frontiers in particle physics detectors: INSTR2020 summary and a look into the future

Titov¹

2020

J. Inst.

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The physics goals of high luminosity particle accelerators, from LHC to HL-LHC and to the next generation of lepton colliders, have set quite stringent constraints on the future needs at the Instrumentation Frontier. Many technologies are reaching their sensitivity limit and new approaches need to be developed to overcome the currently irreducible technological challenges. The detrimental effect of the material budget and power consumption represents a very serious concern for a high-precision silicon vertex and tracking detectors. One of the most promising areas is CMOS sensors offering low mass and potentially radiation-hard technology for the future proton-proton and electron-positron colliders, intensity frontier and heavy-ion experiments. MPGDs have become a well-established technique in the fertile field of gaseous detectors; these will remain the primary choice whenever the large-area coverage with low material budget is required. Vacuum tube technology is inherently fast and new developments include advances in microchannel plates for photomultipliers with a potential for a picosecondtime resolution in large systems. Several novel concepts of picosecond-timing detectors will have numerous powerful applications in particle identification, pile-up rejection and event reconstruction, and serve numerous scientific goals. The story of modern calorimetry is a textbook example of physics research driving the development of an experimental method. Silicon photomultipliers have seen a rapid progress in the last decade, becoming the standard solution for scintillator-based devices. The integration of advanced electronics and data transmission functionalities plays an increasingly important role and needs to be addressed. Bringing the modern algorithmic advances from the field of machine learning from offline applications to online operations and trigger systems is another major challenge. The timescales spanned by future projects in particle physics, ranging from few years to many decades, constitute a challenge in itself, in addition to the complexity and diversity of the required accelerator and detector R&D. This paper summarizes advances and recent trends in the instrumentation techniques for particle physics experiments, largely based on the presentations given at the International Conference "Instrumentation for Colliding Beam Physics" (INSTR-20), held at BINP Novosibirsk, Russia, from 24 to

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The DAQ needle in the big-data haystack

Cited by 7 publications

References 11 publications

From Camac to Wireless Sensor Networks and Time-Triggered Systems and Beyond: Evolution of Computer Interfaces for Data Acquisition and Control. Part I

From Camac to Wireless Sensor Networks and Time-Triggered Systems and Beyond: Evolution of Computer Interfaces for Data Acquisition and Control. Part I

The Phase-2 Upgrade of the CMS Data Acquisition

Next frontiers in particle physics detectors: INSTR2020 summary and a look into the future

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