Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Development of a Geant4 Solid for Stereo Mini-jet Cells in a Cylindrical
  Drift Chamber   Stereo mini-jet cells will be indispensable components of a future $e^+e^-$
linear collider central tracker such as JLC-CDC. There is, however, no official
Geant4 solid available at present to describe such geometrical objects, which
had been a major obstacle for us to develop a full Geant4-based simulator with
stereo cells built in. We have thus extended Geant4 to include a new solid
({\tt TwistedTubs}), which consists of three kinds of surfaces: two end planes,
inner and outer hyperboloidal surfaces, and two so-called twisted surfaces that
make slant and twisted $\phi$-boundaries. Design philosophy and its realization
in the Geant4 framework are described together with algorithmic details. We
have implemented stereo cells with the new solid, and tested them using
geantinos and Pythia events ($e^{+}e^{-}\to ZH$ at $\sqrt{s} = 350 {\rm GeV}$).
The performance was found reasonable: the stereo cells consumed only 25% more
CPU time than ordinary axial cells.

30
The categories of this paper are: q-alg
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom