A Tutorial for the Fast Fourier Transform (FTT) Interferometer Simulator

LASER INTERFEROMETER GRAVITATIONAL WAVE OBSERVATORY- LIGO -CALIFORNIA INSTITUTE OF TECHNOLOGYMASSACHUSETTS INSTITUTE OF TECHNOLOGYDocument Type LIGO-T952008-00 R 3/9/94-A Tutorial For the Fast FourierTransform Interferometer SimulatorBrett BochnerYaron HefetzDistribution of this draft:This is an internal working noteof the LIGO Project..California Institute of Technology Massachusetts Institute of TechnologyLIGO Project - MS 51-33 LIGO Project - MS 20B-145Pasadena CA 91125 Cambridge, MA 01239Phone (818) 395-2129 Phone (617) 253-4824Fax (818) 304-9834 Fax (617) 253-7014E-mail: info@ligo.caltech.edu E-mail: info@ligo.mit.eduWWW: http://www.ligo.caltech.edu/Table of ContentsIndexfile ??? - printed January 24, 1997LIGO-DRAFTContentsChapter 1 Introduction to the Program and its Uses.......11 The Physical Assumptions and Parameters of theSimulation . . . .......................12 The Physical Variety of Simulations . . .23 The Computer File Structure ..............5Chapter 2 How to Use the Program: From Quick & Dirty toElegance and Style.....................7Section 1 Performing an Elementary Run Ð A How-To Guide 8Section 2 Understanding the Mechanics of the Run .....12Topic 1 The Executable Code, ligo.x..............12Topic 2 Essential Input Files on the Cray.....13Subtopic 1 The Main Input File, ligo.dat..............13 2 The Mirror Descriptor Files .13Topic 3 Running The Program . . . ..............15Topic 4 A Brief Understanding of the ...