Data acquisition systems for the high energy and Nuclotron internal target polarimeters with network access to polarization calculation results and raw data

2005 ◽  
Vol 55 (S1) ◽  
pp. A407-A414 ◽  
Author(s):  
A. Yu. Isupov
Keyword(s):  
Data Acquisition ◽  
High Energy ◽  
Network Access ◽  
Internal Target ◽  
Raw Data ◽  
Data Acquisition Systems ◽  
Calculation Results ◽  
Polarization Calculation

A Generic Streaming Software Platform Design for High-energy Physics Data Acquisition Systems

2021 ◽  
pp. 1-1
Author(s):  
Tianxing Wang ◽  
Junfeng Yang ◽  
Hongchao Wang ◽  
Hongwei Yu ◽  
Zhengyang Sun ◽  
...  
Keyword(s):  
Data Acquisition ◽  
High Energy Physics ◽  
High Energy ◽  
Software Platform ◽  
Platform Design ◽  
Data Acquisition Systems ◽  
Energy Physics

scholarly journals VME–based DAQ system for the Deuteron Spin Structure setup at the Nuclotron internal target station

2019 ◽  
Vol 204 ◽  
pp. 10003
Author(s):  
Alexander Isupov
Keyword(s):  
Data Acquisition ◽  
Spin Structure ◽  
Precise Determination ◽  
Beam Polarization ◽  
Internal Target ◽  
Software Module ◽  
Raw Data ◽  
Target Station ◽  
Current Implementation ◽  
Deuteron Spin

The new powerful VME–based data acquisition (DAQ) system has been designed for the Deuteron Spin Structure setup [1] placed at the Nuclotron Internal Target Station [2]. The DAQ system is built using the netgraph–based data acquisition and processing framework ngdp [3, 4]. The software dealing with VME hardware is a set of netgraph nodes in the form of the loadable kernel modules. The specific for current implementation nodes are described, while specific software utilities for the user context are the following. The b2r (binary–to–ROOT) server converts raw data into per trigger and per accelerator spill representations, which are based on C++ classes derived from the ROOT framework [5] ones. This approach allows us to generalize the code for histograms filling and polarization calculations. The b2r optionally stores ROOT events as ROOT TTree in file(s) on HDD, and supports the design of some express offine. The histGUI software module provides an interactive online access for human operator to histograms filled by the r2h (ROOT–to–histograms) server, which obtains the ROOT event representations from b2r. The r2h supports the calculation and histograming of runtime configurable variables as well as raw data variables, and optionally stores ROOT histograms in file(s) on HDD. Since the spin studies at the Nuclotron require fast and precise determination of the deuteron and proton beam polarization, the polarization calculator software module is introduced. This calculator based on runtime configurable r2h code allows us to compute polarization values online and integrate them into the Web–based scheme of representation and control of the polarimeters [6, 7].

scholarly journals The design of a distributed key-value store for petascale hot storage in data acquisition systems

2019 ◽  
Vol 214 ◽  
pp. 01014 ◽  
Author(s):  
Danilo Cicalese ◽  
Grzegorz Jereczek ◽  
Fabrice Le Goff ◽  
Giovanna Lehmann Miotto ◽  
Jeremy Love ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Data Storage ◽  
High Energy Physics ◽  
High Capacity ◽  
High Energy ◽  
Data Selection ◽  
Online Data ◽  
Promising Alternative ◽  
Data Acquisition Systems ◽  
High Bandwidth

Data acquisition systems for high energy physics experiments readout terabytes of data per second from a large number of electronic components. They are thus inherently distributed systems and require fast online data selection, otherwise requirements for permanent storage would be enormous. Still, incoming data need to be buffered while waiting for this selection to happen. Each minute of an experiment can produce hundreds of terabytes that cannot be lost before a selection decision is made. In this context, we present the design of DAQDB (Data Acquisition Database) — a distributed key-value store for high-bandwidth, generic data storage in event-driven systems. DAQDB offers not only high-capacity and low-latency buffer for fast data selection, but also opens a new approach in high-bandwidth data acquisition by decoupling the lifetime of the data analysis processes from the changing event rate due to the duty cycle of the data source. This is achievable by the option to extend its capacity even up to hundreds of petabytes to store hours of an experiment’s data. Our initial performance evaluation shows that DAQDB is a promising alternative to generic database solutions for the high luminosity upgrades of the LHC at CERN.

scholarly journals Simulation and modeling of data acquisition systems for future high energy physics experiments

1991 ◽  
Vol 38 (2) ◽  
pp. 316-321
Author(s):  
A. Booth ◽  
D. Black ◽  
D. Walsh ◽  
M. Bowden ◽  
E. Barsotti
Keyword(s):  
Data Acquisition ◽  
High Energy Physics ◽  
High Energy ◽  
Simulation And Modeling ◽  
Data Acquisition Systems ◽  
Physics Experiments ◽  
Energy Physics
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