Virgo Status Detector Status Computing Data Analysis status and Plans

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Presentation transcript:

Virgo Status Detector Status Computing Data Analysis status and Plans B. Mours (LAPP Annecy) Detector Status Computing Data Analysis status and Plans LSC Meeting, Nov 2003 LIGO-G030578-00-X

Recent history Sept 01-July 02: Central ITF (CITF) commissioning 5 Engineering RUN (Sept 01 – July 02) Aug 02: Shutdown for Virgo upgrade Connect the arms Change mirrors, beam size, modulation frequency Upgrade Mode Cleaner … July 03: End of installation; Inauguration Frequency(Hz) Displacement sensitivity (m/Hz) E0 (September 2001) E1 E2 E3 E4 (July 2002) Virgo E4 Shot noise CITF design s. noise LSC Meeting, Nov 2003 LIGO-G030578-00-X

Alignment status (Now) LSC Meeting, Nov 2003 LIGO-G030578-00-X

North Arm Cavity First lock: October 28 First sensitivity estimation m/sqrt(Hz) First sensitivity estimation Dominated by frequency noise Transmited power LSC Meeting, Nov 2003 LIGO-G030578-00-X

Output Mode Cleaner Locked with the North Cavity locked LSC Meeting, Nov 2003 LIGO-G030578-00-X

Next steps North Cavity West cavity: Recombined Michelson: Linear alignment (work in progress ) Laser frequency stabilization (next weeks) West cavity: Tuning local control (work in progress) Ready for lock: in December Recombined Michelson: Start work on January 2004 First science run: fall 2004 ??? LSC Meeting, Nov 2003 LIGO-G030578-00-X

On site (Cascina) Computing Purpose: Online/On-time analysis Commissioning support Storage 20 TB available 10TB for the raw data circular buffer (1 month) Additional 50 TB almost installed Data analysis computing 16 Bi-pro Linux PC available 2004: add a ‘300 Gflops machine’ (450 KEuros) Network: 34 Mbits/s now Upgraded to 155 Mbits/s in 2004 LSC Meeting, Nov 2003 LIGO-G030578-00-X

Off site Computing 2 National Computing centers: To be used for: Bologna (+ Italian lab using Grid) and Lyon Ressources shared with other HEP experiments To be used for: Data archiving and distribution for the runs: Medium term (‘One year on disk’): Bologna Long term: Lyon Simulation Offline analysis Request for 2004: 46000kSPECINT2000.day (about 150 CPU*365days) 8 time 2003 use 80% requested by periodic searches LSC Meeting, Nov 2003 LIGO-G030578-00-X

Data Analysis Organization Commissioning activities investigations with E. run data Calibration, control performances, detector noises, lines studies, glitches identifications… Driven by Engineering runs Data Analysis working groups Calibration/Reconstruction Noises studies Periodic searches Burst searches Binary coalescence searches Stochastique  Up to now, mainly driven by Mock Data Challanges (3 MDC’s in 2003) LSC Meeting, Nov 2003 LIGO-G030578-00-X

CITF Analysis: Example I E4 Sensitivity curve understanding Internal noise + electronic & shot noises Laser frequency noise + Internal noise + electronic & shot noises LSC Meeting, Nov 2003 LIGO-G030578-00-X

CITF Analysis: Example II Binary search on E4 Data Events distribution (1.4 S.M.) Very few detector glitches Horizon distance LSC Meeting, Nov 2003 LIGO-G030578-00-X

MDC: Example for Bursts Inject ZM events in 9 hours of E4 noise Non stationarity for MDC3 Lock segment for MDC3 Produce Calibrated channel Whitened channel Run different algorithms: Mean Filter (MF), Slope filter (ALF), Peak Correlator (PC) Generalized Delta Filter (GDF) Get: Event list, efficiency,SNR ratio,… LSC Meeting, Nov 2003 LIGO-G030578-00-X

MDC: Example for Binary Inject events with: Different masses, SNR, models Run different analysis: Merlino: Parallel flat search MPI based Multi-Band Template Analysis Get: Speed, Event list, Efficiency, false alarms SNR ratio… The Horizon follows the non-stationarity LSC Meeting, Nov 2003 LIGO-G030578-00-X

Coming up data Commissioning runs: MDC4: January 04 C1: Nov 14-17 (One Arm) C2: Jan 16-19 (One/two arms) with linear alignment MDC4: January 04 run part of the online pipeline Some data conditioning tests (like lines removal) Goal: Be ready for the first Virgo science run Fall 2004 ?? LSC Meeting, Nov 2003 LIGO-G030578-00-X