Contents Segment Database Automatically generated segments Other segments
Contents Segment Database ●Automatically generated segments ●Other segments ●Segment summary ●
Segment Database ● ● Segment Definition Table – Name / Version – Comment Segment Table – Start / Stop GPS – Activity (on/off) ● Process/Pedigree ● Map Table
Segment Database (cont'd) ● ● Benefits – Real-time segment definition/insertion – Immediate availability (e. g. for online analysis) – Query interface. Access Modes – Database query – segwizard – Flat files.
Segment Access - LSCseg. Find ● Segment database client – Command line interface – Flexible query syntax (e. g. segment combinations) – Multiple output formats ● Self documentation “LSCseg. Find –help” ● Example syntax: – LSCSeg. Find -t PD_Overflow -s 819123456 -e 819234567 -i H 1
Segment access: segwizard ● tcl/tk GUI – well known and loved by many ● Latency?
Automatically Generated Segments ● State Vector ● Seg. Gener – H 1: H 2_Not_Locked – H 2: H 1_Not_Locked – Wind_Over_30 MPH – PD_Overflow (LSC Master overflow) – ASC_Overflow
Front-End Processor Errors ● ● ● LSC_Master_Overflow (similar to PD_Overflow) ASC_Master_Overflow (similar to ASC_Overflow) Calibration line dropouts – CALIB_DROPOUT_1 SAMPLE – CALIB_DROPOUT_1 SECOND – CALIB_DROPOUT_AWG-STUCK
H 2 OSEM Sensor Glitches ● ● Enter GW channel via local damping loop – Weak filtering in H 2 – Fixed in Feb 2006 OSEM_GLITCH segs – Threshold second trend sigma in H 2: SUSITM[XY]_SENSOR_[U L]L – GW trigs in 112/147 of
To Be Investigated ● Seismic ● Power fluctuations (Dips/glitches) ● Photon Calibrator glitches ● Thermal Compensation System (TCS) glitches. ● Spontaneous violin mode changes.
- Slides: 10