Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extracting superconducting parameters from surface resistivity by using
  inside temperatures of SRF cavities   The surface resistance of an RF superconductor depends on the surface
temperature, the residual resistance and various superconductor parameters,
e.g. the energy gap, and the electron mean free path. These parameters can be
determined by measuring the quality factor Q0 of a SRF cavity in helium-baths
of different temperatures. The surface resistance can be computed from Q0 for
any cavity geometry, but it is not trivial to determine the temperature of the
surface when only the temperature of the helium bath is known.
  Traditionally, it was approximated that the surface temperature on the inner
surface of the cavity was the same as the temperature of the helium bath. This
is a good approximation at small RF-fields on the surface, but to determine the
field dependence of Rs, one cannot be restricted to small field losses.
  Here we show the following: (1) How computer simulations can be used to
determine the inside temperature Tin so that Rs(Tin) can then be used to
extract the superconducting parameters. The computer code combines the
well-known programs, the HEAT code and the SRIMP code. (2) How large an error
is created when assuming the surface temperature is same as the temperature of
the helium bath? It turns out that this error is at least 10% at high RF-fields
in typical cases.

35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
16
The categories of this paper are: stat
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga