Speaker
Andy BUTTERWORTH
Description
The main RF system of the LHC, which uses 400MHz
superconducting cavities, will be used to capture,
accelerate and store the injected beam. A separate
transverse damper system using electrostatic deflectors
will be used to damp transverse oscillations. The
associated low-level RF (LLRF) equipment is responsible
for fast control of the accelerating voltage and phase in
the cavities, the phase and radial position of the beam,
and the synchronization of beam transfers between
SPS and LHC. The LLRF system combines high-
frequency analogue components with digital signal
processing using FPGAs and DSPs. The extensive use of
digital technology allows not only to achieve the
required performance and stability but also to provide
full remote control and diagnostics facilities needed in a
machine where most of the RF system is inaccessible
during operation.
