Observation of transverse quadrupolar tune shifts in the Photon Factory storage ring
2005; American Physical Society; Volume: 8; Issue: 4 Linguagem: Inglês
10.1103/physrevstab.8.042801
ISSN1098-4402
AutoresS. Sakanaka, T. Mitsuhashi, T. Obina,
Tópico(s)Gyrotron and Vacuum Electronics Research
ResumoThe frequencies (tunes) of transverse quadrupolar oscillations were measured in the 2.5-GeV Photon Factory storage ring at the High Energy Accelerator Research Organization (KEK). As a result, remarkable shifts in the quadrupolar frequencies with the bunch current were found; they were both positive and negative in the horizontal and vertical directions, respectively. This result can be explained by a focusing effect due to short-range wakefields containing a quadrupolar component.
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