Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cavity types   In the field of particle accelerators the most common use of RF cavities is
to increase the particle velocity of traversing particles. This feature makes
them one of the core ingredients of every accelerator, and in the case of
linear accelerators they are even the dominant machine component. Since there
are many different types of accelerator, RF cavities have been optimized for
different purposes and with different abilities, e.g., cavities with fixed or
variable RF frequency, cavities for short or long pulses/CW operation,
superconducting and normal-conducting cavities. This lecture starts with a
brief historical introduction and an explanation on how to get from Maxwell's
equations to a simple cavity. Then, cavities will be classified by the type of
mode that is employed for acceleration, and an explanation is given as to why
certain modes are used in particular cavity types. The lecture will close with
a comparison of normal versus superconducting cavities and a few words on the
actual power consumption of superconducting cavities.

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The categories of this paper are: nlin
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess