LIGO-G010068-00-Z Detector Characterization Software Tools - 2001.3.15K. Riles - University of Michigan 1 Status Report on CW Discriminator Work Keith.

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LIGO-G Z Detector Characterization Software Tools K. Riles - University of Michigan 1 Status Report on CW Discriminator Work Keith Riles / Dave Chin / Huimin Hu University of Michigan

LIGO-G Z Detector Characterization Software Tools K. Riles - University of Michigan 2 Antenna Pattern Code Basic code & documentation (Dave Chin) installed in LAL in Summer 2000, but very little work done since Remaining tasks: »Vectorize the routines for more efficiency »Add option for sensitivity to scalar waves (R. Wagoner request) »Beef up the documentation, including a LIGO technical note »Finalize the structures describing the IFO locations and orientations (Dave working with John Whelan et al on this) All straightforward - just have to make the time

LIGO-G Z Detector Characterization Software Tools K. Riles - University of Michigan 3 Instrumental Lines Known mechanical resonances (>150) in Hanford 2K added to meta-database: »Original list from M. Landry & D. Ottaway (LIGO-T ) »Basic entries: –Best known central frequency –Best known FWHM in frequency –Bit flag for additional info (e.g., phase for coherent lines) »Sample entries for butterfly test mass resonance at Hz: Name=Line:H2:6747.5:freq0:mirror Value= Name=Line:H2:6747.5:fwid0:mirror Value= Name=Line:H2:6747.5:finfo:mirror Value=0.0 (no addl info yet) (nominal line value used as common index in variable name) »This naming scheme circulated to ASIS in December 2000

LIGO-G Z Detector Characterization Software Tools K. Riles - University of Michigan 4 Instrumental Lines Much work to do: »Write LAL-compatible code to extract database entries and store in suitable structures for use in CW search »Write online code to sift through DMT line monitor (S. Klimenko) output (trend frames) to extract and store into database long-term phase/amplitude parameters of coherent lines (60 Hz & harmonics) »Write DMT code to search continuously for unknown lines of width <1 mHz for “manual” investigation. »Write stand-alone code to look for solar-day modulations in candidate sharp instrumental lines One active person on this at present: Huimin Hu (New grad student - wrote C code for initial database entry) (KR to lend a hand when classes end)