Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Liquid Argon Time Projection Chamber Research and Development in the
  United States   A workshop was held at Fermilab on March 20-21, 2013 to discuss the
development of liquid argon time projection chambers (LArTPC) in the United
States. The workshop was organized under the auspices of the Coordinating Panel
for Advanced Detectors, a body that was initiated by the American Physical
Society Division of Particles and Fields. All presentations at the workshop
were made in plenary sessions organized into seven topical categories: $i)$
Argon Purity, $ii)$ Cryogenics, $iii)$ TPC and High Voltage, $iv)$ Electronics,
Data Acquisition and Triggering, $v)$ Scintillation Light Detection, $vi)$
Calibration and Test Beams, and $vii)$ Software. This document summarizes the
current efforts in each of these topical categories. It also highlights areas
in LArTPC research and development that are common between neutrino experiments
and dark matter experiments.

18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph