Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: In Situ Cryomodule Demagnetization   The feasibility of in-situ demagnetization of fully assembled superconducting
RF cryomodules is demonstrated. Useful parametric values for demagnetization as
well as measured effects on sensitive components within the cryomodule are
listed and discussed. A practical arrangement for active compensation of the
axial component of magnetic field is described.

30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
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The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc