LIGO-G070082-00-Z Detector Characterization SummaryK. Riles - University of Michigan 1 Summary of Detector Characterization Sessions Keith Riles (University.

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LIGO-G Z Detector Characterization SummaryK. Riles - University of Michigan 1 Summary of Detector Characterization Sessions Keith Riles (University of Michigan) LIGO Scientific Collaboration Meeting Baton Rouge – March 22, 2007

LIGO-G Z Detector Characterization SummaryK. Riles - University of Michigan 2 Presentations in DC Sessions Can’t do justice to all of these in this brief summary Will just try to hit the highlights Agenda page: Lots of interesting talks!

LIGO-G Z Detector Characterization SummaryK. Riles - University of Michigan 3 DC Session Highlights Calibrations: S5 V3 being released (L1/H1 ready, H2 nearly so) MyungkeeS Photon calibrator studies (10-20% discrepancy with coils ) (EvanG) Photon calibrator mirror deformation (masses not rigid!) (StefanH) VIRGO calibration status (coil method for now) (LoicR) High freq (FSR) calibration (stochastic use under review) (StefanosG) Timing: S5 timing stability (ideal talk – boring) (SzabiM)

LIGO-G Z Detector Characterization SummaryK. Riles - University of Michigan 4 DC Session Highlights S5 glitch investigations: Glitch Group busy investigating transient artifacts in S5 data and giving feedback to commissioners Overview of investigations / tools (call for volunteers) (ShourovC) New kinds of Block-Normal Triggers (exotic zoo) (ShantanuD) Defining S5 epochs (range & KW-glitch based) (GabyG) Glitch classification (pipeline done – start coinc studies) (SomaM)

LIGO-G Z (Unknown) Unknowns No clue for about 40 % of Block-Normal outliers or even if the same cause is responsible for some of them. No luck from doing full-frame Q-scans or event displays Maybe some glitches don’t show up in Q-scans/spectrograms of any other diagnostic channels? Example of Lonely glitch Maybe tools such Hilbert-Huang transform /multi-dimensional classification could help understand and/or categorize the unknown glitches. From Shantanu Desai’s talk

LIGO-G Z Detector Characterization SummaryK. Riles - University of Michigan 6 DC Session Highlights S5 glitch investigations: Glitch Group busy investigating transient artifacts in S5 data and giving feedback to commissioners Overview of investigations / tools (call for volunteers) (ShourovC) New kinds of Block-Normal Triggers (exotic zoo) (ShantanuD) Defining S5 epochs (range & KW-glitch based) (GabyG) Glitch classification (pipeline done – start coinc studies) (SomaM) Data Quality: Updated DQ flags, brand-new flags, flags on the way, recommended usage (JohnZ) Capturing DQ information in elogs (call for volunteers) (TiffanyS)

LIGO-G Z Detector Characterization SummaryK. Riles - University of Michigan 7 DC Session Highlights Other S5 noise investigations: S5 environmental disturbances (review & update) (RobertS) LHO seismic studies (new DQ flags) (MasahiroI) S5 upconversion studies (Jackson E&M redux) (SamW) Hilbert-Huang transform (upconversion vs time) (JordanC) S5 spectral line investigations: Mature, multi-working-group effort (KeithT)

LIGO-G Z Detector Characterization SummaryK. Riles - University of Michigan 8 From Robert Schofield’s talk

LIGO-G Z Detector Characterization SummaryK. Riles - University of Michigan 9 Phasing of upconversion burst noise relative to test mass motion 1.7 Hz Test mass motion Bursts of upconversion noise occur at zero-crossing of test mass motion (This corresponds to zero-crossing of SUS coil current) Bursts do not appear to be regular and predictable From Jordan Camp’s talk

LIGO-G Z Detector Characterization SummaryK. Riles - University of Michigan 10 DC Session Highlights Other S5 noise investigations: S5 environmental disturbances (review & update) (RobertS) LHO seismic studies (new DQ flags) (MasahiroI) S5 upconversion studies (Jackson E&M redux) (SamW) Hilbert-Huang transform (upconversion vs time) (JordanC) Injection studies: Matched-filter checks (good agreement) (MyungkeeS) Inspiral parameters (good agreement) (SteveF) S5 spectral line investigations: Mature, multi-working-group effort (KeithT)

LIGO-G Z Detector Characterization SummaryK. Riles - University of Michigan 11 DC Session Highlights DMT developments: S5 infrastructure (~150 monitors running – more on the way) (JohnZ) PulsarMon – Recent improvements (GiovanniS) PlaneMon – Preliminary S5 DQ flags (EvanG) SixtyHertzMon – Identifying 60/120/180 Hz upconversion (KeithR) Data set reduction: Time to reassess w.g. needs (Input requested - soon) (GregM) Veto strategy: Frequency-dependent amplitude consistency (StefanH)

LIGO-G Z Detchar Introduction (8/16/06) 12 Meeting of Detchar Committee Agenda Round table on - Ensuring capture of DQ info from elog (call for volunteers !!!) - Preparing detchar white paper (need to finish by July) - Support for H2 Astrowatch + program? - Urgent needs for S5 analysis / running? - Big needs for S6?