Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Experiment and simulations of sub-ps electron bunch train generation at
  Fermilab photoinjectors   Recently the generation of electron bunch trains with sub-picosecond time
structure has been experimentally demonstrated at the A0 photoinjector of
Fermilab using a transverse-longitudinal phase-space exchange beamline. The
temporal profile of the bunch train can be easily tuned to meet the
requirements of the applications of modern accelerator beams. In this paper we
report the A0 bunch-train experiment and explore numerically the possible
extension of this technique to shorter time scales at the Fermilab SRF
Accelerator Test Facility, a superconducting linear electron accelerator
currently under construction in the NML building.

22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph