Transcript ppt
IA Meeting – Apr22,2006 GLAST LAT Project Status of LAT Data Analysis Eduardo do Couto e Silva Apr 21, 2006 E. do Couto e Silva 1 IA Meeting – Apr22,2006 GLAST LAT Project LAT Pre-Ship Review We would like to use runs taken with FSW to demonstrate the following • • • • • • • • Multiple Trigger Engines are configured properly and rates/per engine agree with expectations for ground cosmic rays Andrea ROI are configured properly and performance agrees with expectations for ACD tiles shadowing TKR towers Andrea Quantities that depend on calibrations/thresholds agree with expectations for surface cosmic rays – position/width of muon peaks/CAL module David – CAL pedestals Sasha Need to quantify results! – ACD pedestals agreement within 1% , 10%...? – peak position/width of ToT distributions for MIPs – noise occupancies for ACD, TKR and CAL Deadtime for different readout modes agree with expectations – zero suppression enabled/disabled If you do not know how to – CAL range (one or four) get started in any of these – Extrapolate muon tracks to the CAL David topics please contact us – verify position resolution and “PSF with muons” David Extrapolate muon tracks to the ACD – verify geometry and efficiencies Study LAT performance when LAT is positioned horizontally (baseline for NRL) Study LAT performance when we change the PDU voltages – Search for increase in noise occupancy, extra sources of noise or changes in pedestal Stefano/Monica Study LAT performance when we add external rate to the data flow system – Does the deadtime change in an expected way? E. do Couto e Silva 2 IA Meeting – Apr22,2006 GLAST LAT Project Workshop 7? • We are all very busy in the next few months – LAT Delivered from SLAC – ~ May – Environmental Tests @ NRL IA Workshop 7 – ~ May/June/July/August – Beam Test Workshop 2 Maybe September ? – ~ May 15-17 – DC2 Closeout Goals: – ~ end of May – Beam Test Workshop 3 – ~ mid June – ISOC Review – ~ end June or mid July – PS Beam Test – July 27, Aug 20 Analyze NRL Data (first opportunity to study system properties at Temperature extremes!) Compare with baseline at SLAC – Collaboration Meeting – Aug 28 – Sep 1 – SPS Beam Test – Sep 4 – 18 E. do Couto e Silva 3