Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Preliminary Measurements for a Sub-Femtosecond Electron Bunch Length
  Diagnostic   With electron beam durations down to femtoseconds and sub-femtoseconds
achievable in current state-of-the-art accelerators, longitudinal bunch length
diagnostics with resolution at the attosecond level are required. In this
paper, we present such a novel measurement device which combines a high power
laser modulator with an RF deflecting cavity in the orthogonal direction. While
the laser applies a strong correlated angular modulation to a beam, the RF
deflector ensures the full resolution of this streaking effect across the bunch
hence recovering the temporal beam profile with sub-femtosecond resolution.
Preliminary measurements to test the key components of this concept were
carried out at the Accelerator Test Facility (ATF) at Brookhaven National
Laboratory recently, the results of which are presented and discussed here.
Moreover, a possible application of the technique for novel accelerator schemes
is examined based on simulations with the particle-tracking code elegant and
our beam profile reconstruction tool.

28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg