Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analog read-out of the RPCs in the ARGO-YBJ experiment   The ARGO-YBJ experiment, currently under construction at the Yangbaijing
Laboratory (4300 m a.s.l.), consists of a single layer of about 2000 Resistive
Plate Chambers (RPCs) for a total instrumented area of about 6700 m^2. The
digital read-out, performed by means of pick-up electrodes 6.7 X 62 cm^2
('strips'), allows one to measure the particle number of small size showers. To
extend the size range up to the knee region it is necessary to implement the
charge read-out of the detector chambers. In order to achieve this goal each
RPC has been instrumented with two large size pads of dimensions 140 X 125
cm^2. In this paper the performance of the prototype circuit devoted to the
charge read-out is reported.

13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an