Bill Atwood, SCIPP/UCSC, Jan. 30, 2006 GLAST 1 Post Processing & Pass4 The time for DC2 is drawing to a close. However we're still only part ways up the.

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Presentation transcript:

Bill Atwood, SCIPP/UCSC, Jan. 30, 2006 GLAST 1 Post Processing & Pass4 The time for DC2 is drawing to a close. However we're still only part ways up the "learning curve" for Bkg. Rej. Can't quit Now! This analysis Input: (repeated) 1) First day of 5B Bkg. Run: dataset v7r3p5 (Includes rocking) 2) Extra Galactic Diff: dataset v7r3p5 3) All Gamma rep-V7r3p4 dataset, runs All these datasets are "CTnew" mean application of the cuts shown by Julie prior to download

Bill Atwood, SCIPP/UCSC, Jan. 30, 2006 GLAST 2 Tkr1Z0 > 590 CTBGAM >.35 & McDirErr <.1 Top Side Ribbons Ribbon Geometry locations from Joanne: YSide =min(abs(Tkr1Y0 - abs( (832.6-abs(Tkr1X0))/Tkr1XDir) * Tkr1YDir), 742) ZYSide=min(abs(Tkr1Z0 - abs( (832.6-abs(Tkr1X0))/Tkr1XDir) * Tkr1ZDir), 800) XSide =min(abs(Tkr1X0 - abs( (832.6-abs(Tkr1Y0))/Tkr1YDir) * Tkr1XDir), 742) ZXSide=min(abs(Tkr1Z0 - abs( (832.6-abs(Tkr1Y0))/Tkr1YDir) * Tkr1ZDir), 800) ZTop=ifelse(abs(Tkr1X0) > 503.5, 760.1, ifelse(abs(Tkr1X0) > 179.5, 747.1, 733.7)) YSideTop=abs(Tkr1Y0 - abs((ZTop - Tkr1Z0)/Tkr1ZDir)*Tkr1YDir) Correlated Events in the Top Extend this down the sides cutting out strips 10 mm wide Input Y Side X Side Top Cut Summary Bkg: % All Gam: % Dealing with ACD Ribbons

Bill Atwood, SCIPP/UCSC, Jan. 30, 2006 GLAST 3 Heavy Ion Filter CTBBestEnergy > 1000 & ((CalTransRms - 1.5*Tkr1ToTTrAve) < 5) & CTBGAM >.5 What's Eliminated Cut Summary Bkg: % All Gam: % Scrambled Tracks Filter (Tkr1FirstLayer - Tkr2FirstLayer) 2 & Tkr2TkrHDoca > 10 & (CTBGAM+.16*CTBBestLogEnergy) < 1.32 Cut Summary Bkg: % All Gam: %

Bill Atwood, SCIPP/UCSC, Jan. 30, 2006 GLAST 4 Hi Energy e- Filter ((min(abs(Tkr1XDir),abs(Tkr1YDir)) 0 & AcdActDistTileEnergy >.2) | (Tkr1SSDVeto -3 & AcdActDistTileEnergy >.15) | ( AcdActiveDist3D >( *(Tkr1FirstLayer-2))) ) & (CTBGAM+.17*CTBBestLogEnergy)< 1.75 Cut Summary Bkg: % All Gam: % Cosmic Proton Filter Tkr1FirstLayer -80 & ((AcdActDistTileEnergy + AcdActiveDist3D/100) > 1) Cut Summary Bkg: % All Gam: % Events cut out

Bill Atwood, SCIPP/UCSC, Jan. 30, 2006 GLAST 5 Anti-Correlated Filter CTBBestEnergy < 500 & ((CalCsIRLn + 2.5*Tkr1CORERatio) < 8 | Tkr1CORERatio <.03) Cut Summary Bkg: % All Gam: % Global Ribbon Extension & AcdCornerDoca Extension ( AcdRibbonEnergy >.2 & AcdRibbonActDist > -10) | (AcdCornerDoca > -5 & AcdCornerDoca < 50 & CTBTkrLATEdge < 200) Cut Summary Bkg: % All Gam: % No Plots... CTBGAM = CTBGAM*min(2.0, (3.5/min(CTBBestLogEnergy, 3.5))^2) Last – Boost CTBGAM Prob. below 3.2 GeV partially fills in dip in sensitivity

Bill Atwood, SCIPP/UCSC, Jan. 30, 2006 GLAST 6 Base Class 3 – No Post-Processing Filters Base Class 3 – Post-Processing Filters & CTBGAM Boost at Low Energy CTBGAM >.5

Bill Atwood, SCIPP/UCSC, Jan. 30, 2006 GLAST 7 Class 3 + Post Process

Bill Atwood, SCIPP/UCSC, Jan. 30, 2006 GLAST 8.5 Class 3 + Post Processing

Bill Atwood, SCIPP/UCSC, Jan. 30, 2006 GLAST 9 And the spectral response is better behaved.... Class 3 + Post Processing

Bill Atwood, SCIPP/UCSC, Jan. 30, 2006 GLAST 10 Pass 4 Punch List 1)Change event axis in CalValsCorrTool to Tkr1 definition (thanks – P. Bruel) 2)New ACD Variable (addition to AcdValsTool) Distance of closest approach to an ACD Ribbon (whether not Ribbon fired) Suggested Alg.: a) determine if trajectory goes out top (0) or which of the 4 sides (1-4). b) depending on entering surface – loop over all ribbon segments c) keep and report smallest value. This avoids having to check the POCA for each DOCA calc. and limits the sampled ribbon segments to only those on the entering surface. Suggested nTuple Var. name: AcdTkrRibbonDoca 3) New Tkr. Vars. (Additions to TkrValsTool) TkrLATEdge = 742 – max(abs(Tkr1X0), abs(Tkr1Y0)) (presently this appears as CTBTrkLATEdge in the nTuple) Track Dispersion: Mean-square distance between track start locations relative to Tkr1 if else where If N Tkrs < 2 TrkDispersion = 0.

Bill Atwood, SCIPP/UCSC, Jan. 30, 2006 GLAST 11 4)New Trk-Cal Variables – Where to put them? – Historically these have gone into CalValsTool. CalTkrXtalDispersion: Dispersion of Cal. Xtals about Tkr1 Tracjectory weighted by energy (?) CalTkrXtalDispTrunc: Same as above after throughing out 10% furthest (Not largest contributors) tracks Data Reprocessing Requirements Data: the All Gamma Run (V7r3p4 which is a repo of v7r3p1) – need 2M Background: the 5B run using v7r3p5 Diffuse: the 1 day using v7r3p5