Measurements of SPS Single - Bunch Coherent Tune Shifts and Head - Tail Growth Rates in the Year 2001
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چکیده
Measurements of transverse oscillations of single bunches of protons in the SPS at 26 GeV are described. They are used to monitor the transverse impedance of the SPS. There has been a major effort to reduce the SPS impedance in the last winter shutdown, by shielding of most pumping ports and removal of obsolete (lepton) components. In fact, a significant reduction in the coherent tune shift with current compared to previous years is seen.
منابع مشابه
Measurements of coherent tune shift and head-tail growth rates at the SPS
Measurements of the coherent tune shifts with intensity and of head-tail growth rates have been performed with single proton bunches in the SPS, at 26 GeV. From these measurements, the real and imaginary part of the transverse impedance can be estimated. Together with earlier and future measurements, this will be used to experimentally document and follow up the effect of the impedance improvem...
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تاریخ انتشار 2001