Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The design study for a 500 MeV proton synchrotron with CSNS linac as an
  injector   Using the China Spallation Neutron Source (CSNS) linac as the injector, a 500
MeV proton synchrotron is proposed for multidisciplinary application, such as
biology, material and proton therapy. The synchrotron will deliver proton beam
with energy from 80 MeV to 500 MeV. A compact lattice design was worked out,
and all the important beam dynamics issues were investigated. The 80 MeV H-
beam is stripped and injected into the synchrotron by using multi-turn
injection. In order to continuously extraction the proton with small beam loss,
the achromatic structure is proposed and slow extraction method with RF
knock-out is adopted and optimized.

14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex