Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Design and performance of coded aperture optical elements for the
  CESR-TA x-ray beam size monitor   We describe the design and performance of optical elements for an x-ray beam
size monitor (xBSM), a device measuring $e^+$ and $e^-$ beam sizes in the
CESR-TA storage ring. The device can measure vertical beam sizes of
$10-100~\mu$m on a turn-by-turn, bunch-by-bunch basis at $e^\pm$ beam energies
of $\sim2-5~$GeV. X-rays produced by a hard-bend magnet pass through a single-
or multiple-slit (coded aperture) optical element onto a detector. The coded
aperture slit pattern and thickness of masking material forming that pattern
can both be tuned for optimal resolving power. We describe several such optical
elements and show how well predictions of simple models track measured
performances.

37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org