Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Haloscope Amplification Chain based on a Travelling Wave Parametric
  Amplifier   In this paper we will describe the characterisation of a rf detection chain
based on a travelling wave parametric amplifier (TWPA). The detection chain is
meant to be used for dark matter axion searches and thus it is mounted coupled
to a high Q microwave resonant cavity. A system noise temperature $T_{\rm sys}
= (3.3 \pm 0.1$) K has been measured at a frequency of 10.77 GHz, using a novel
scheme allowing measurement of $T_{\rm sys} $ exactly at the cavity output
port.

36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
14
The categories of this paper are: math-ph