Survey and Alignment for BEPCII Storage Ring
نویسندگان
چکیده
منابع مشابه
Constructing a Distributed Developing Environment Using Epics for Bepcii Control System
Probe: to debug database records. • Alarm handler ALH The current Beijing Electron Position Collider (BEPC) is going to be upgraded to reach a higher energy as 1.89 GeV and a luminosity of 1.0E33cms. A second storage ring will be installed in the same tunnel of BEPC. The control system of BEPCII will be constructed based on EPICS. During the past two years a basic prototype has been set up, inc...
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The Beijing Electron Collider is being upgraded (BEPCII) to a two-ring collider with a design luminosity of 1 × 10cm s at a center-of-mass energy of 3.89 GeV. It will operate between 2 and 4.2 GeV in the center of mass. With this luminosity, the BESIII detector will be able to collect, for example, 10 billion J/ψ events in one year of running. This will be a unique facility in the world opening...
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The BEPC e+e− storage ring and the BES detector have made important contributions to our understanding of the τ -lepton and charmed quark systems. For instance, measurements of R = σ(e+e− → hadrons)/σ(e+e− → μ+μ−), crucial for determining the hadronic contribution to the vacuum polarization in the BEPC energy region, have had a profound impact on the determination of αQED at the mass scale of t...
متن کاملThe Electron Cloud Instability Studies in Bepc*
The electron cloud instability (ECI) in the BEPC was studied systematically with experiments and simulations in recent years. Several electron cloud detectors have been installed into the BEPC storage ring to measure the electron yielding. The effects of solenoid, the clearing electrode, the chromaticity and the octupole on ECI have been investigated in BEPC experimentally. To evaluate the ECI ...
متن کاملControl System of the Bepcii
Recently the Chinese Academy of Sciences has chosen BEPCII as the future development of the Beijing Electron Positron Collider (BEPC), i.e. upgrade of both the machine and detector. The luminosity of the machine is expected to increase to 1.0x10cms. The project will be started at the beginning of 2002 and finished within 3-4 years. The BEPC control system was built in 1987 and upgraded in 1994....
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تاریخ انتشار 2003