Title :
Time-resolved imaging of electron and positron beams at APS
Author :
Lumpkin, A.H. ; Yang, B.X.
Author_Institution :
Advanced Photon Source, Argonne Nat. Lab., IL, USA
Abstract :
Characterizations of stored electron beams and more recently positron beams circulating in the Advanced Photon Source (APS) 7-GeV storage ring have been done using optical synchrotron radiation (OSR) and X-ray synchrotron radiation (XSR) imaging techniques. Results include the measurement of the bunch length and horizontal beam size versus single-bunch current for both electron and positron beams, observations of multibunch bunch length effects near 100 mA stored beam current, and initial diagnostics of a coupled-bunch instability with a 15-minute period. Both the Hamamatsu C5680 dual-sweep streak camera using OSR and a pinhole camera using XSR from a bending magnet source point were utilized. Proposed enhancements to the beamline will also be presented
Keywords :
X-ray imaging; electron accelerators; particle beam bunching; particle beam diagnostics; particle beam stability; storage rings; synchrotron radiation; APS; Advanced Photon Source; Hamamatsu C5680; X-ray synchrotron radiation; beamline; bunch length; coupled-bunch instability; dual-sweep streak camera; electron beam; horizontal beam size; multibunch bunch length; optical synchrotron radiation; pinhole camera; positron beam; single-bunch current; Cameras; Current measurement; Electron beams; Electron optics; Length measurement; Optical imaging; Positrons; Storage rings; Synchrotron radiation; X-ray imaging;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.751086
