Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Noninvasive measurement of micron electron beam size of high energy
  using diffraction radiation   Treatments of the usage of optical diffraction radiation from the
relativistic electrons moving though a conductive slit for the noninvasive
transverse beam size measurement encounter hard limitation of the method
sensitivity for the electron energy larger than 1 GeV. We consider in this
article a possibility of application in a diffraction radiation technique the
artificial phase shift, which can take place when transverse electron position
varies. This allows us to realize the nonivasive measurements of transverse
size of supper-relativistic electron beams with the small emittance.

12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph