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Summary of E10 / S3 Hardware Signal Injections

LIGO-G040133-00-E. Summary of E10 / S3 Hardware Signal Injections Peter Shawhan, Szabolcs M á rka, Bruce Allen, Sukanta Bose, Stephen Fairhurst, Michael Landry, Alan Weinstein Additional software written by Daniel Sigg and Isabel Leonor LSC Meeting March 17, 2004. The Big Picture. GPS.

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Summary of E10 / S3 Hardware Signal Injections

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  1. LIGO-G040133-00-E • Summary of E10 / S3Hardware Signal Injections • Peter Shawhan, Szabolcs Márka,Bruce Allen, Sukanta Bose, Stephen Fairhurst,Michael Landry, Alan Weinstein • Additional software written by Daniel Sigg and Isabel Leonor • LSC Meeting • March 17, 2004 Shawhan, Marka, et al.

  2. The Big Picture GPS 750000000 751000000 752000000 753000000 754000000 755000000 756000000 757000000 758000000 E10 S3 PulsarStochastic 10 10 9 7 Burst 3330 H1 2642 H2 314 L1 Inspiral 188 H1 120 H2 12 L1 86 1168 288 51 322 198 264 141 308 102 402 · 76 1055 288 · 404 · 162 20 235 · 402 ·· 170 ······ 144 ······ 13 15 17 28 14 27 10 48 16···· 23 · 28 · 25 · 44 ············ 12 Shawhan, Marka, et al.

  3. General Details • Pulsar and stochastic injections are in science-mode data • Burst and inspiral injections are not • All signals were injected into ETMX_EXC • Calibration lines continued on DARM_CTRL_EXC during all injections • Injections synchronized between sites using GPS timing Shawhan, Marka, et al.

  4. Pulsar Injection Details • Simulated pulsar waveforms calculated on-the-fly • Software provided by Bruce Allen • Up to 10 simultaneous simulated pulsars • Wide range of sky positions, frequencies, spin-down rates, and amplitudes • Injection parameters accounted for actuation transfer functions • Late in run, one pulsar injected in coordination with GEO • Largest-amplitude pulsars discontinued partwaythrough run • All pulsar injections turned off for middle part of run Shawhan, Marka, et al.

  5. Pulsar Injection Monitoring Shawhan, Marka, et al.

  6. Stochastic Injection Details • Correlated noise calculated on-the-fly • Software provided by Sukanta Bose and Bruce Allen • Injected over a period of several hours during S3 run • Normalized to correspond to ΩGW = 1 • Science data: 1.9 hours for H1, 4.6 hours for H2, 3.7 hours for L1 Shawhan, Marka, et al.

  7. Burst Injection Details • Various pre-computed waveforms • Waveform files provided by Alan Weinstein • Sine-Gaussian with various frequencies and Qs,Zwerger-Müller and Dimmelmeier-Font-Müller,and a few Gaussians • Injected with various amplitudes • Did not account for actuationtransfer functions (makes littledifference for Sine-Gaussians) Shawhan, Marka, et al.

  8. Inspiral Injection Details • Used a few sets of waveform files • S2 waveform files used at first • New files for S3 provided by Steve Fairhurst • Masses: 1.4+1.4, 1.0+1.0, 10+10, 10+1 M⊙ • Tricky to account for actuation transfer function • Unable to exactly compensate for the notch filter at the violin mode freq • Switched to using“notchless” transferfunction to avoidbig transient • Tried a few ways to avoid a big kick at coalescence time • Rolled off waveform amplitude at end Shawhan, Marka, et al.

  9. Summary • Pulsar and stochastic injections were highly successful • “Astrophysical” as well as simple burst waveforms • Improved understanding of inspiral waveform issues • Few burst / inspiral injections into L1 • Further details (lists, etc.) on Hardware Injection web page:http://blue.ligo-wa.caltech.edu/scirun/S3/HardwareInjection/ • We need to decide what do to for S4 well before it begins Shawhan, Marka, et al.

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