| Paper |
Title |
Page |
| PS02 |
Chromaticity Measurements at HERA-P Using the Head-Tail Technique with Chirp Excitation
|
103 |
| |
- M. Wendt, F. Willeke
DESY, Deutsches Elektronen-Synchrotron, Hamburg, Germany
- A. Boudsko
TRIUMF, Vancouver, Canada
- O.R. Jones, H. Schmickler
CERN, Geneva, Switzerland
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| |
Experiments have been performed in the HERA proton ring
(HERA-p) to test a quasi non-destructive method of chromaticity
measurements for protons. The method is based
on the detection of the head-tail phase shift of coherend betatron
oscillations using a broadband beam position pickup
and a commercial “fast-frame” oscilloscope. Previous experiments
have relied on a single kick for transverse excitation,
whereas the results presented here were carried out
using swept frequency “chirp” excitation. The tests proved
to be successful, and the method seems to be a good candidate
for chromaticity measurement in new large hadron
accelerators, such as LHC.
|
|
| PT05 |
First results on closed-loop tune control in the CERN-SPS
|
165 |
| |
- L. Jensen, O.R. Jones, H. Schmickler
CERN, Geneva, Switzerland
|
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| |
This paper presents the first measurements performed
with the SPS Qloop. The emphasis will be laid on the
model used for designing the regulation loop and how
well it fits reality.
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