Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Some studies using capillary for flow control in a closed loop gas
  recirculation system   A Pilot unit of a closed loop gas (CLS) mixing and distribution system for
the INO project was designed and is being operated with (1.8 x 1.9) m^2 glass
RPCs (Resistive Plate Chamber). The performance of an RPC depends on the
quality and quantity of gas mixture being used, a number of studies on
controlling the flow and optimization of the gas mixture is being carried out.
In this paper the effect of capillary as a dynamic impedance element on the
differential pressure across RPC detector in a closed loop gas system is being
highlighted. The flow versus the pressure variation with different types of
capillaries and also with different types of gasses that are being used in an
RPC is presented. An attempt is also made to measure the transient time of the
gas flow through the capillary.

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
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin