SND is a spherical non-magnetic detector,which operated since 1996 at VEPP-2M electron-positron collider in Novosibirsk.Now VEPP-2M collider is dismantled to be replaced by a new VEPP-2000 machine with higher energy a...SND is a spherical non-magnetic detector,which operated since 1996 at VEPP-2M electron-positron collider in Novosibirsk.Now VEPP-2M collider is dismantled to be replaced by a new VEPP-2000 machine with higher energy and luminosity.The SND detector is also performing upgrade of its subsystems including electronics,and software,Expected substantial growth of events dataflow requires radical changes in the Data Acquisition (DAQ) system software.This paper describes the SND2000 software architecrure and its principal components.First the main events flow processuing components are considered-the readout process and the L3-trigger farm.After processing by L3 the events flow is either logged to tape or fed to calibration and slow control process.Using auxiliary control and service software components,which are also described.performs the management of these activities.展开更多
On late afternoon July 19, 2008, researchers at the CAS Institute of High Energy Physics (IHEP) in Beijing produced the first collisions in the upgraded Beijing Electron-Positron Collider (BEPCII).The feat was observe...On late afternoon July 19, 2008, researchers at the CAS Institute of High Energy Physics (IHEP) in Beijing produced the first collisions in the upgraded Beijing Electron-Positron Collider (BEPCII).The feat was observed in the brand-new associated detector, Beijing Electron Spectrometer III (BESIII). Although careful and separate tests have been conducted to the two devices,展开更多
文摘SND is a spherical non-magnetic detector,which operated since 1996 at VEPP-2M electron-positron collider in Novosibirsk.Now VEPP-2M collider is dismantled to be replaced by a new VEPP-2000 machine with higher energy and luminosity.The SND detector is also performing upgrade of its subsystems including electronics,and software,Expected substantial growth of events dataflow requires radical changes in the Data Acquisition (DAQ) system software.This paper describes the SND2000 software architecrure and its principal components.First the main events flow processuing components are considered-the readout process and the L3-trigger farm.After processing by L3 the events flow is either logged to tape or fed to calibration and slow control process.Using auxiliary control and service software components,which are also described.performs the management of these activities.
文摘On late afternoon July 19, 2008, researchers at the CAS Institute of High Energy Physics (IHEP) in Beijing produced the first collisions in the upgraded Beijing Electron-Positron Collider (BEPCII).The feat was observed in the brand-new associated detector, Beijing Electron Spectrometer III (BESIII). Although careful and separate tests have been conducted to the two devices,
