Title :
Observation and analysis for motions of trapped microparticles in the TRISTAN accumulation ring
Author :
Saeki, Hiroshi ; Momose, Takashi ; Ishimaru, Hajime
Author_Institution :
Japan Synchrotron Radiat. Res. Inst., Kobe, Japan
Abstract :
Signals of high-energy bremsstrahlung in the TRISTAN accumulation ring was observed with lead-glass counters, accompanied by a sudden decrease in the electron beam lifetime which occurred due to microparticle trapping in the electron beam. The observation showed a trapped microparticle made a periodic oscillation; the period was 1 s. The observation coincides with the result based on our newly developed theory for vertical oscillation of a trapped microparticle. Furthermore, the calculated variation in the beam lifetime also coincides with the actual variation in the beam lifetime
Keywords :
particle beam diagnostics; storage rings; 1 s; TRISTAN accumulation ring; beam lifetime; electron beam lifetime; microparticle trapping; periodic oscillation; vertical oscillation; Counting circuits; Electron beams; Electron traps; Glass; Laboratories; Motion analysis; Motion detection; Radiation detectors; Signal analysis; Signal detection;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.309801
