SPEAR (Stanford Positron-Electron Asymmetric Ring) consists of a single ring of magnets threaded by an aluminum vacuum chamber in which counterrotating beams of electrons and positrons will circulate. A high luminosity is achieved by making the beams collide in one of two long 71low-beta71 interaction regions. 132 The ring is composed of the two matched low-beta regions connected by nearly circ...

A synchrotron radiation (SR) facility typically consists of an injector, a storage ring, and SR beamlines. The latter two features are unique to SR facilities, when compared to other types of accelerator facilities. The SR facilities have the characteristics of low injection beam power, but high stored beam power. The storage ring is generally above ground with people occupying the experimental...

The Duke storage ring is a dedicated facility for the UV-VUV FEL operation. The low level computer control system for the Duke storage ring is developed using EPICS. The control hardware employs several different architectures including CAMAC, GPIB, Allen Bradley, and VME. The high level control is implemented in Tcl-Tk scripts running on SPARCstations. TclTk provides the global control capabil...

Importance of vibration problems increases with the smaller emittance of a storage ring for synchrotron radiation source. Vertical emittance of the SPring-8 storage ring is so small that effect of vibration to an electron beam can not be neglected. We thus studied the vibration of the SPring-8 storage ring. Measurements of beam oscillation and magnet vibration were done and the relation between...

Particles circulating at specific velocities in a storage ring can undergo betatron resonances at which static perturbations of the particles' orbit yield large transverse (betatron) oscillations. We have observed betatron resonances in an ultracold-atom storage ring and found these resonances to cause the near-elimination of the longitudinal dispersion of atomic beams propagating at resonant v...