aLIGO SUS Acceptance Test Criteria E1200844-v1 For a given type of suspension - Design Document - Requirements document - Conceptual design documents - Final design documents - Control system design documents - Full Mechanical Assembly Package - Drawings - As-built Solidworks assembly - As-built mechanical assembly procedure - Installation procedure - Full electronics drawing package - As-built circuit schematics - Full signal chain electronics layout (wiring diagram) - Full signal chain description (block diagram) - Compensation vs. state description - Design description - Model of circuit which can predict - Transfer functions - Noise performance in terms of - Input and Output referred voltage noise - Current noise across coil - Force noise on optic - Displacement of optic - Dynamical model, with fully cross-coupled DOFs (as necessary), and representative damping loops - Matlab / Mathematica models stored in SVN / DCC - Dynamical model results package which contains - Commonly-asked-for Transfer functions (Matlab, Mathematica) - Mode shapes (Mathematica) - Predicted residual seismic motion (Matlab, Mathematica) - Predicted residual sensor noise (Matlab) - Predicted residual actuator noise (Matlab) - Predicted maximum range of motion (Matlab / Spreadsheet) - Testing software package (as automated as possible) - Transfer functions - ASDs - Range - User's manual For a single suspension All analog & digital systems complete as designed - Full (control) signal chain for all stages in place and confirmed functional as designed - Sensor calibration understood/independently confirmed (at least for representative sensors on chain, independently calibrated by… VCO?) - Calibrated sensor channels stored in frames - range/signs understood (DC range test, compare against range document, signs check out with Sign Table) - ASD spectra understood (Spectra compared against sensor noise and seismic into SUS point) - BIO completely functional (TEST/COIL out switch confirmed via ability to drive, frequency response switches confirmed with monitor chassis transfer functions) - All possible states of Frequency response of sensor chain and drive chain are confirmed - Electronics compensation filters have confirmed compensation to ~5% from DC to several kHz - Drive noise performance understood (matches expected noise level), matching expectations compared against requirements in Current, Force, and Displacement (ASDs of NoiseMon's turned "propagated" through models) - Undesired cross-coupling characterized / compensated / minimized - Technical - Sensors - Actuators - Fundamental / Mechanical - Longitudinal to Pitch - Others (?) - Control hierarchy defined as designed - Monitor Chassis - Monitor signals with MEDM (yes/no) - Noise performance confirmed functional (ASD of all OSEMs on all stage's NoiseMon channels) - Calibration understood - Calibrated channels in frames (yes/no) Mechanical TFs (open loop "plant" for locking / damping loops) check out - As-installed (Phase 3b) TFs, compared against model and other SUS of same type / assembly level - Comparison of "Passed" TF all phases of testing show same results Structural resonances are at acceptably high frequency - As-installed, driven (B&K Hammer & ISI) transfer function confirmation Damping loops perform as best as possible, as expected from full production model - Closed loop gain - Open Loop Gain - ASDs and RMS motion match predictions given input in - L (with cavities if possible) - P and Y (with optical levers, if possible) - (others if possible) As-installed Mechanics / Sensors / Actuators / Electronics inventoried - Fundamental properties measured - Mechanics - Optic S/N, associated mechanical properties (mass, radius, thickness) - Level of assembly vs. retrofits (flat flags, pitch adjusters, ECD magnets, etc) - Overall mass of each stage, as-installed - Trim mass distribution - Lowest stage characterization (violin mode frequencies; for fibers & ears: metrology) - Actuator / Driver - Serial numbers - Coil Resistance / Inductance (of full chain, preferably, but at least once along the phases of testing) - Driver noise level (as measured on the bench during phase 1a, and from noisemon circuits in situ) - Frequency Response of Full Chain in all states - Magnet characteristics - Sensor - Serial numbers - Open light voltage / Calibration - Sensor noise level - Frequency Response of Full Chain - Other associated Electronics (AA, AI, I/O Chassis, BIO Chassis, etc.) - Serial numbers - Associated during-assembly test results