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Session H20 - Gravitational Radiation - Experiment.
MIXED session, Sunday morning, April 30
102A, LBCC

[H20.008] MSE: a mechanical simulation engine for the LIGO end to end model.

Giancarlo Cella (Universita' di Pisa), Hiroaki Yamamoto (LIGO project (California Institute of Technology)), E2E End To End LIGO simulation system Team

MSE is a fully tridimensional simulation. This code is based on an object oriented design. It provides a set of fundamental mechanical objects (masses, beams etc.) that can be combined to represent a complete mechanical system. Once the model is assembled, an equilibrium point is searched . Next the linearized dynamics of the system is evaluated around the working point. The model of each mechanical object can be refined according to the precision requirements of the effect under study. The code provides methods to automatically improve the internal representation of the system. The linearized dynamics is used to calculate the progress of the change of positions and forces, with given initial conditions. The matrix representation become larger when the actual system is complex, or very finely described. Basic rules to construct the matrix are well formulated. Models validated for simpler configurations, automatically work for more complex cases

Part H of program listing