Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vortex dynamics and losses due to pinning: Dissipation from trapped
  magnetic flux in resonant superconducting radio-frequency cavities   We use a model of vortex dynamics and collective weak pinning theory to study
the residual dissipation due to trapped magnetic flux in a dirty
superconductor. Using simple estimates, approximate analytical calculations,
and numerical simulations, we make predictions and comparisons with experiments
performed in CERN and Cornell on resonant superconducting radio-frequency NbCu,
doped-Nb and Nb$_3$Sn cavities. We invoke hysteretic losses originating in a
rugged pinning potential landscape to explain the linear behavior of the
sensitivity of the residual resistance to trapped magnetic flux as a function
of the amplitude of the radio-frequency field. Our calculations also predict
and describe the crossover from hysteretic-dominated to viscous-dominated
regimes of dissipation. We propose simple formulas describing power losses and
crossover behavior, which can be used to guide the tuning of material
parameters to optimize cavity performance.

24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn