Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High brightness electron beam for radiation therapy: A new approach   I propose to use high brightness electron beam with 1 to 100 MeV energy as
tool to combat tumor or cancerous tissues in deep part of body. The method is
to directly deliver the electron beam to the tumor site via a small tube that
connected to a high brightness electron beam accelerator that is commonly
available around the world. Here I gave a basic scheme on the principle, I
believe other issues people raises will be solved easily for those who are
interested in solving the problems.

33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat