Review of the longitudinal impedance budget of the ELETTRA storage ring

Abstract

Changes in the longitudinal impedance budget occur due to the changes in the machine structure. Following the installation in ELETTRA storage ring of the new vacuum chambers in the last three years, estimation of the longitudinal loss factor are carried out. The measurements are performed by mapping the horizontal closed orbit deviation, taking full advantage of the newly installed high resolution BPM electron system. The current results are compared with those of the previous measurements and presented in this paper.

Design of a higher harmonic cavity for the SSRF storage ring

“…There are two super-conducting harmonic RF systems being operated at Swiss Light Source (SLS) and Elettra. As our reference, SLS's working point is 35 kHz with 200 mA, getting a voltage of 0.8 MV [5] ; Elettra's working point is 64 kHz with 320 mA, a voltage of 0.56 MV is reached [6] .…”