| Paper |
Title |
Page |
| WEPP026 |
Reliable Operation of the AC Dipole in the LHC
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2575 |
| |
- R. Tomas, S. D. Fartoukh, J. Serrano
CERN, Geneva
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The AC dipole in the LHC will not only provide transverse oscillations without emittance growth but also with a safety guarantee. These two features are due to the adiabaticity of the excitation. However chromaticity and non-linear fields spoil this adiabaticity. This paper assesses the margins of the relevant parameters for a reliable and safe operation of AC dipoles in the LHC.
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| THPC159 |
Timing and Event Distribution for FERMI@ELETTRA
|
3363 |
| |
- A. Rohlev, A. O. Borga, G. D'Auria
ELETTRA, Basovizza, Trieste
- L. R. Doolittle, A. Ratti
LBNL, Berkeley, California
- J. Serrano, M. W. Stettler
CERN, Geneva
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FERMI@ELETTRA is a 4th generation light source under construction at Sincrotrone Trieste. It will be operated as a seeded FEL driven by a warm S-band Linac which places very stringent specifications on control of the amplitude and phase of the RF stations. The local clock generation and distribution system at each station will not be based on the phase reference distribution but rather on a separate frequency reference distribution which has significantly less stringent phase stability requirements. This frequency reference will be embedded in the serial data link to each station and has the further advantage of being able to broadcast synchronous machine timing signals with sub-nanosecond temporal accuracy. The phase and amplitude of the phase reference line is measured for each pulse and used to calibrate the other measurements. This paper describes the architecture used to distribute the frequency reference along with the precision machine timing and clocking signals.
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