LCE, Light Collection Efficiency simulation tool

Paper: 212
Session: A (poster)
Presenter: Shamov, Andrei, Budker Institute of Nuclear Physics, Novosibirsk
Keywords: simulation, simulation tools

LCE, Light Collection Efficiency simulation tool.

A.G. Shamov, A.R.Buzykaev
Budker Institute of Nuclear Physics
630090 Lavrentiev street 11, Novosivirsk, Russian Federation


The LCE code simulates main physical processes essential for
light collection in Cherenov and scintillation detectors: light
reflection and absorption on detectors walls, absorption and
scattering of light in radiators and light guides, re-emission
of light by wave length shifters.
For simulation in the LCE frame a detector must be described
as the set of blocks, the space regions limited by pieces of
plains of second order surfaces. Each blocks must have constant
optical parameters. These parameters can have arbitrary depen-
dence on the light wave length.
As input language LCE employs the specialized version of OPAL
(Open Physical Analysis Language), the command language develop-
ed in BINP for data acquisition and analysis systems of the KEDR
and CMD-2 detectors. The language includes most important
FORTRAN-77 operators and can be expanded by an user at the link-
ing stage or interactively.
OPAL is used both for the detector description and the simu-
lation process control. Using of OPAL allows one easily describe
complex detector, dynamically (without program relinking) speci-
fy dependence of the optical parameters on the wave length and
simulate physical processes or their modes which were not fore-
seen in the program.
LCE was used for design of the Cherenkov counter for KEDR and
BaBar detectors. The simulated detector parameters are in agree-
ment with the measured ones.
Currently it is available under VAX/VMS only.