Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Design of a Compact Spectrometer for High-Flux MeV Gamma-Ray Beams   A novel design for a compact gamma-ray spectrometer is presented. The
proposed system allows for spectroscopy of high-flux multi-MeV gamma-ray beams
with MeV energy resolution in a compact design. In its basic configuration, the
spectrometer exploits conversion of gamma-rays into electrons via Compton
scattering in a low-Z material. The scattered electron population is then
spectrally resolved using a magnetic spectrometer. The detector is shown to be
effective for gamma-ray energies between 3 and 20MeV. The main properties of
the spectrometer are confirmed by Monte-Carlo simulations.

13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys