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Plan For Instrument Testing in the ANSS C. R. Hutt and J. R. Evans

Plan For Instrument Testing in the ANSS C. R. Hutt and J. R. Evans. Quiet Test Location: Albuquerque Seismological Laboratory. Subsurface Tunnels in Granite. Performing tests of Super-isolated STS-2 in ASL tunnel. Bob Hutt, Erhard Wielandt, and Peter Melichar in front of ASL test tunnel.

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Plan For Instrument Testing in the ANSS C. R. Hutt and J. R. Evans

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  1. Plan For Instrument Testing in the ANSS C. R. Hutt and J. R. Evans Quiet Test Location: Albuquerque Seismological Laboratory Rotation Workshop

  2. Subsurface Tunnels in Granite Performing tests of Super-isolated STS-2 in ASL tunnel Bob Hutt, Erhard Wielandt, and Peter Melichar in front of ASL test tunnel Rotation Workshop

  3. Current Facilities and Capabilities at ASL • Test Facilities • Subsurface: Tunnels (approx. 15 m depth) and deep boreholes (100 to 200 m depth), all in granite • Very low background noise • Excellent temperature stability • Shallow: Surface and near-surface vaults and boreholes • Large concrete piers attached directly to granite (former WWSSN) • Reference Instruments (low noise, well-calibrated) • STS-1 (3 components) • ANMO GSN station (Geotech KS54000 and Guralp CMG-3TB borehole instruments) • Data Acquisition Systems • Several 12 channel 24-bit high resolution data acquisition systems (Q680) • Experienced Personnel • Analysis Software • Self noise, power spectra, digital filtering, automated calibration analysis (under development) • Low Distortion Oscillator (old - limited life?) • Calibration Step Table (Lennartz - Wielandt design) • Old Russian shake tables - not currently operational • Need new control electronics to make operational • Usable as noise isolation tables? Rotation Workshop

  4. Proposed Upgrades to ASL Test Facilities • More high resolution data acquisition systems • Q330HR • Q680’s from GSN • More reference instruments • Dedicated STS-2 • Sundstrand QA2000 accelerometer • Environmental test chamber • HP/Agilent 3458A Digital Multimeter (8.5 digits) • HP/Agilent 35670 Dynamic Signal Analyzer • High precision tilt table • High precision strong motion shake table • High priority, but expensive ($50k - $250k) • EMI/RFI/Magnetic field generation and test equipment • Additional Calibration Step Table(s) Super-isolated STS-2 Q330s and Balers Erhard Wielandt demonstrating step table with tilt attachment Rotation Workshop

  5. Gary Holcomb (now retired) and Leo Sandoval with rotational meter developed at ASL Software development Support standardized testing and reporting per Guidelines for Seismometer Testing Workshop Easier to use (GUI, etc) Rotational Sensor: Continue development (see picture) New Low Distortion Oscillator (?) Use old Russian shake tables as isolation tables (?) No modifications required on vertical table Fit centering springs to horizontal table Make the old Russian shake tables operational as shake tables (?) Obtain un-used high current drivers from UCSD? Work with Erhard Wielandt under Senior Scientist-in-Residence Program Proposed Upgrades to ASL Test Facilities (cont.) Rotation Workshop

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