Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Design and Simulation of a high order mode cavity bunch length monitor   A new bunch length measurement method based on high order mode cavity was
proposed. Operating the harmonic cavity at mode TM0n0 so that its radius could
be chosen, in order to break the limitation of beam pipe radius. A two-cavity
bunch length monitor for linac of positron source was designed. Operating
frequency selection for different bunch time structure was discussed and
calculation formula of bunch length was deducted. Fundamental harmonic cavity
resonates at 2.856 GHz with mode TM010. Fifth harmonic cavity resonates at
14.28 GHz (fifth harmonic of the linac fundamental frequency 2.856 GHz) with
mode TM020, which could provide larger radius. Each cavity equipped with a
filter to suppress unwanted signal. A simulation measurement was conducted in
CST Particle Studio for beam current from 100-300mA, bunch length from 5-10ps,
calculation results shows a fairly high accuracy (better than 3%). Several
cases were discussed.

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The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex