Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Feasibility study of beam-expanding telescopes in the interferometer
  arms for the Einstein Telescope   The optical design of the Einstein Telescope (ET) is based on a dual-recycled
Michelson interferometer with Fabry-Perot cavities in the arms. ET will be
constructed in a new infrastructure, allowing us to consider different
technical implementations beyond the constraints of the current facilities. In
this paper we investigate the feasibility of using beam-expander telescopes in
the interferometer arms. We provide an example implementation that matches the
optical layout as presented in the ET design update 2020. We further show that
the beam-expander telescopes can be tuned to compensate for mode mismatches
between the arm cavities and the rest of the interferometer.

29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph