Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Longitudinal dynamics with RF phase modulation in the LNLS electron
  storage ring   In the Brazilian synchrotron light source, we observed that modulating the
phase of the accelerating fields at approximately twice the synchrotron
frequency suppressed remarkably well a longitudinal coupled-bunch mode of the
beam driven by a higher order mode (HOM) in one of the radiofrequency (RF)
cavities. In this work, we present the results of a set of systematic
measurements, in single and multibunch mode, aimed at characterizing the
effects of RF phase modulation on the beam. We compare those experiments with
the results of tracking simulations and of a theoretical model in which Landau
damping is the stabilizing mechanism that explains the suppression of the
longitudinal coupled bunch instability. We also measure the frequency of the
stable islands created in longitudinal phase space by phase modulation and the
longitudinal beam transfer function (BTF) as a function of the modulation
frequency and amplitude. The experimental results are in good agreement with
theoretical expectations.

5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th