We report on measurements of coherent tune shifts, head-tail growth rates, and current-dependent betatron phase advances at the CERN SPS in the year 2000. Comparing results obtained at two different energies shows that there is no notable contribution from space charge. Within the measurement resolution the impedance is the same as in 1999, consistent with the expected small effect from changes to only a small number of pumping ports. In 2000, data were taken over an expanded range of chromaticities, which increases the sensitivity to the impedance frequency distribution. Measurements of the current-dependent phase advance around the ring help localizing the most important impedance sources.
|Title of host publication||PACS2001. Proceedings of the 2001 Particle Accelerator Conference|
|Number of pages||3|
|Publication status||Published - 2001|
|Event||19th IEEE Particle Accelerator Conference - Chicago, United States|
Duration: 18 Jun 2001 → 22 Jun 2001
|Conference||19th IEEE Particle Accelerator Conference|
|Period||18/06/01 → 22/06/01|