The besiii detector and offline software inspire inspire hep. This addition to the software reduces the systematic uncertainty for the physics analysis in cases where the muon counter information is used. Lhc experiments make extensive use of web proxy caches, especially for software distribution via the cernvm file system and for conditions data via the frontier distributed database caching system. Beijing spectrometerbesiii experimentinstitute of high. Cosmicray data of 90 m events have been collected and used for calibration, alignment as well as detector tuning. In besiii, tracking and momentum measurements for charged particles are made by a. The besiii offline analysis software system and computing.
This tracking algorithm is implemented in the besiii offline software system, and its performance is checked using both monte carlo and data. By offline os updates we mean package installations and updates that are run with the system booted into a special system update mode, in order to avoid problems related to conflicts of libraries and services that are currently running with those on disk. Besiii offline software the besiii offline software 10, named boss, is a new offline data processing software system developed based on gaudi framework according to the requirements of besiii experiment. The expected performance will be given based on monte carlo simulations and results of cosmic ray and beam tests. Offline softwarebeijing spectrometerbesiii experiment. Besiii collaboration workshop on data quality and software held. Modify or redesign mc events generator and detector simulation packages study the application of geant4 for besiii mc system.
The construction of the besiii experiment sciencedirect. A data quality monitoring software framework for the besiii. The com port must be different in the different operating software instances. The besiii offline computing system is designed to have a pc farm of about 2000 nodes for both data and monte carlo production, as well as data analysis. Data quality monitoring dqm plays an important role in data taking at the besiii experiments. The software uses some external hep libraries such as cernlib, clhep, root, geant4 etc. Boss can only be of use if you are a member of the besiii collaboration and if you have access to the software of this collaboration. Based on these studies, a preliminary digitization model is implemented in the besiii offline software. The dqm system separates online daq and offline software environment as much as possible and is easy to expand. The besiii offline analysis software system and computing environment zepu mao march. A method for the direct absolute measurement of decay with. Distributions related to the lorentz angle, the diffusion effect, the drift time, the multiplication and the signal induction on the readouts are obtained from this simulation.
Its free version lets you manage 20 online orders, 20 offline orders, 12 shipments, and 1 warehouse per month. The boss framework has been developed based on gaudi3, which provides standard interfaces for the common software components necessary. The software is implemented into the besiii offline software system boss, capable to perform a full simulation and reconstruction of the besiii detector. Bes iii software boss bes offline software system based on gaudi. In this contribution, we present an ongoing work, which aims at benefiting besiii computing system for higher resource utilization and more efficient job operations brought by cloud and virtualization technology with openstack and kvm. Dqm is used to monitor detector status and data quality. The cmt is used as the software configuration management tool. Besiii, with its greater luminosity, will require an even larger amount of monte carlo than cleoc. The simulation and reconstruction software is based on geant4 and has been implemented into the besiii offline software system. Design and construction of the besiii detector inspirehep. Research on fine grained event service for the besiii offline software and its scheduling mechanism and research on besiii offline software and. Rec ana detector service caliration service physics service. This document is inspired by this gnome design whiteboard1.
Major magnets, superconducting rf cavities and quadrupole magnets, as well as the cryogenics system have been completed, and their installation is under way. Therefore, using the cmt tool is the recommended way to modify existing packages or rebuild the examples included in the release. These pages started as a collection of notes, but now aim to serve several purposes. Introduction to besiii experiment besiii at the bepcii accelerator is a major upgrade of besii at the bepc for the studies of hadron physics and. The work is performed in the framework of the besiii offline software system boss, the gaudi based, which contains five subprojects such as framework, simulation, calibration, reconstruction, and analysis tools.
Scilit article digitization modeling of a cgem detector. Ppt besiii offline software system boss powerpoint. With the software tool, tuning and analysis utilities tau, its system performance has been measured. Simulation of the besiii endcap time of flight upgrade nasaads. We begin with the architecture of besiii offline software to understand how it works. Provide accessible and uptodate tutorials on working with boss. Besiii physical offline data analysis on virtualization. Besiii physical data analysis on virtualization platform. The software is managed by cmt and supported by many external libraries like gdml, cernlib, geant4, root and so on. Besides a comparison of the simulated results with the data taken during a beam test, the enhanced capability of pion and kaon separation in the upgraded besiii detector is investigated. Monte carlo mc simulations are used to optimize the event selection and background estimation. The bes iii offline software is based on gaudi and uses geant4 to generate monte carlo, with mysql to manage databases.
Chapter 2 the besiii detector and offline software. Besiii offline software system boss boss development environment framework. The results of a full simulation of an endcap time of flight detector upgrade based on multigap resistive plate chambers for the besiii experiment are presented. Besiii offline software system boss, is an offline data processing software system which is developed based on gaudi framework. In this framework, the dqmf can also simulate a virtual data taking environment, transfer events to the. Bes iii offline software system and performance test. Simulation, calibration, reconstruction, and analysis use boss besiii offline software system, a software framework based on root 7 among other components. There are three types data stored in mysql database. Multiple instances it is possible to run more than one software instance of the operating software at the same time on the same computer. The besiii experiment at bepcii changzheng yuan ihep, beijing.
Study of besiii muc offline software with cosmicray data. The simulation software is developed in boss framework. Rec ana detector service caliration service physics service event data. Introduction to besiii experimentbeijing spectrometer.
This contribution introduces the besiii specific framework implementation for simulation. The results of the simulations are compared with beam test results and it is shown that a total time. Alignment and measurement of the magnetic field for the besiii. The besiii is a generalpurpose experiment for studying electronpositron collisions at bepcii, which is currently under construction at ihep, beijing. Not ready for integration in besiii daq in 20112012. The cylindrical core of the besiii detector consists of a heliumbased multilayer drift chamber mdc, a plastic scintillator timeofflight system tof, and a csitl electromagnetic calorimeter emc, which are all enclosed in a superconducting solenoidal magnet providing a 1. Offline software boss bes offline software system based on gaudi. The simulation and reconstruction software is based on geant4 and has been implemented into. The existing physics analysis applications for the besiii experiment like bes offline software system boss 7 or sniper 8 should use the system to access local and remote data without much. Jan 01, 2015 the software is implemented into the besiii offline software system boss, capable to perform a full simulation and reconstruction of the besiii detector. Besiii offline software system boss framework algorithms, services, io, converters, apps offline database oflline data process event generator offline calibration detector simulation reconstruction event display physics analysis evtgen geant4 gaudi root mc calib. Overview of the besiii detector besiii offline software main drift chamber timeofflight system electromagnetic calor. Chapter 2 the besiii detector and offline software request pdf.
Bes iii computing environment the computing environment for the experiment is composed of about 10 geographically distributed. The besiii offline software libraries have been built using the cmt. A dqm framework dqmf has been developed to make it possible to reuse the besiii offline reconstruction system in the online environment. The besiii oine software system boss is built on the gaudi architecture. For this, you in turn need to be a besiii member and have an sso account, which can be done here. Besiii offline software the besiii offline software10, named boss, is a new offline data processing software system developed based on gaudi framework according to the requirements of besiii experiment. Besiii software configuration management ma qiumei. The alignment and magnetic field strength measurement have been adopted in the latest version of the besiii offline software system. The besiii detector finished accumulating a sample of 10 billion j. The beijing spectrometer besiii is a particle detector experiment situated at the beijing electronpositron collider bepcii. The bes iii offline software is based on gaudi and uses geant4 to. This gitbook describes the use of the besiii offline software system boss. A data quality monitoring software framework for the. The besiii offline software sources are stored in cvs and can be accessed using the cvs command.
This man page describes how to implement offline system updates with systemd. Based on these studies, a preliminary digitization model is implemented in the besiii offline software system and the preliminary result is reasonable. A special tracking algorithm for the besiii muon counter is developed and verified with montecarlo simulation and then further confirmed with the cosmicray data. Zoho inventory is a cloudbased inventory and warehouse management solution for smbs. The boss framework has been developed based on gaudi3, which provides standard interfaces for the common software components. Home open zone besiii offline software distributed computing. The obtained strip resolutions are in good agreement with the design values. If you do not have an ihep networking account, it is better to check out the official offline software page of besiii. A computing center at ihep and several local centers at collaborating universities are anticipated. The results of a full simulation of an endcap timeofflight detector upgrade based on multigap resistive plate chambers for the besiii experiment are presented. Hepevt g4event mctruth digits hits rawdata cnvsvc bes iii rawdata generator event converters simulation digitization reconstruction algorithms calibration algorithms rechits rectracks. Based on these results, a preliminary digitization model is implemented in the besiii offline software system.
Since many jobs read the same data, cache hit rates are high and hence most of the traffic flows efficiently over local area networks. Besiii computing environment and dst data wen shuopin. Low transverse momentum track reconstruction based on the. The zdd was designed in frascati in the year 2010, built, tested and installed in 2011. The besiii offline software system is built on the gaudi architecture. Status of besiii event reconstruction system besiii offline software group 2006. Besiii physical offline data analysis on virtualization platform.
Besiii data management system epj web of conferences. Besiii common analysis tools clhep, histogramming and bparticle dr. Always attempt to take the library offline with acsls or els tape management software before using slc. Minnesota bes iii home page minnesota hep home page. The results show that this tracking method improves reconstruction efficiency at the low transverse momentum region. This version also lets you select and manage shipping providers for your orders. Offline software system transient event store generator simulation digitization gaudi event display simulation reconstruction physics analysis calibration calmdc. Beijing spectrometerbesiii experimentinstitute of high energy. May 12, 2018 this tracking algorithm is implemented in the besiii offline software system, and its performance is checked using both monte carlo and data.
The tracking algorithm based on hough transform is proved to be beneficial for the mdc. Take all library drives offline see taking a device offline. It is primarily designed to perform studies of charmonium and charm physics, light hadrons, determination of the tau mass, and r r r scans at a centerofmass energy of ranging between 2 to 5 gev. The results of the simulations are compared with beam test results and it is shown that a total.
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