This area contains slides of talks. It also contains reports on work in progress, both by me and by Bob Handler. If you are not one of our collaborators, you are not entitled to review this material. It contains preliminary work which can be inaccurate, and only members of our collaboration are in a position to determine accuracy.

• summary document From 2004
• 22-Apr-1997 Studying IMU backgrounds with GEANT.
• 14-May-1997 GEANT pix of the detectors, where hits came from, FMU from Run I, sanity plots.
• 30-Oct-1997 Progress in stub finder writing.
• 3-Dec-1997 How the simulation works for IMU (FORTRAN version).
• 27-Jan-1998 Simulation status, pictures; reconstruction status, class diagram.
• 13-Feb-1998 Progress. Muon gun results, hit origins and times, overview of framework.
• Geant pix and descriptions containment volumes
• 19-May-1998 Energy depositions, times from GEANT. Framework descriptions.
• 8-July-1998 More of same.
• 4-Oct-2000 Tracking Meeting Overview of reconstruction status and program flow.
• 20-Dec-2000 Muon Tracking Meeting Summary of reconstruction status, mine and Bob's.
• 21-Feb-2001 (and 28-Feb-2001) Muon Tracking Meeting Cell pictures, stub distributions, GEANT +/- muon distributions.
• 7-Mar-2001 Muon Tracking Meeting More alignments.
• 14-Mar-2001 Muon Tracking Meeting Progress. Warning about USE_ISOCXX in GNUmakefile
• 28-Mar-2001 Muon Tracking Meeting Oscillations, bad TDC ID's, crosstalk.
• 2-May-2001 Muon Tracking Meeting More GEANT studies: rphi, fraction surviving, Pt mismeasurement
• 9-May-2001 Muon Tracking Meeting Same as above. Hard link.
• 16-May-2001 Muon Meetings Some plots from 36x36 runs. Drifts, widths, t0.
• 23-May-2001 Muon Meetings (Geometry) GEANT detector pictures.
• 6-June-2001 Muon Meetings (more Geometry, solution) Progress on geometry. Iron now OK. Bob's crossing times for stubs.
• 13-June-2001 Muon Meetings (more Geometry) Progress.
• 22-August-2001 Muon Meetings (more Geometry) Geometry looks done, FORTRAN to be abandoned. Plots of triggers, BSU timing, rates.
• 29-August-2001 Muon Meetings Progress report, mostly YMON.
• 12-September-2001 Muon Meetings Progress report, early stab at BSU efficiency, Bob's early numbers for BMU efficiency, hits are in rear.
• 19-September-2001 Muon Meetings Progress, BSU occupancies, timing vs BMU stubs.
• 10-October-2001 Muon Meetings TSU timing distributions, BSU. Needs more work.
• 12-October-2001 Muon Meetings Progress report summary for big meeting.
• 24-October-2001 Muon Meetings Progress in time division for Z, BSU front/rear vs Z.
• 31-October-2001 Muon Meetings Progress. Time shifts: mine vs Bobs.
• 7-November-2001 Muon Meetings Progress.
• 14-November-2001 Muon Meetings Pix for DOE review: BMU rates w+w/o BSU, stub rates ditto, time distributions.
• 5-December-2001 Muon Meetings Bob's time differences between layers.
• 12-December-2001 Muon Meetings PuffModule hint. No progress.
• 19-December-2001 Muon Meetings ASD cards don't cause the wire-to-wire time variations, better Bob Z distributions.
• 26-December-2001 Muon Meetings: Merry Christmas!
• 16-January-2002 Muon Meetings Simulation flow explained.
• 23-January-2002 Progress reports. Progress with x/y wire positions. Worthless dimuon plot.
• 30-January-2002 Progress reports. Drphi for dimuons.
• 13-February-2002 Progress reports. Bob's matching scintillator times with stub crossing times.
• 20-February-2002 Empty.
• 27-February-2002 Progress reports. Bob's plots for scintillator timing.
• 6-March-2002 Progress reports. New stub-finder announced.
• 13-March-2002 Progress reports.
• 3-April-2002 Progress reports. Mostly bug fixes and pictures to document same. Bob's plots for t0 offsets seem to show an odd structure.
• 17-April-2002 Progress reports. Bob's crosstalk studies with reference to origin and to the effect on the trigger.
• 1-May-2002 Reports from the Offline shift. Some notes on comparisons of results between Fermi RedHat 6.1.1 and 7.1.1.
• 8-May-2002 Residuals from simulation. Bob's plots on timing.
• 15-May-2002 More on residuals from simulation. Better Bob plots on timing, and resolution work.
• 22-May-2002 More on residuals from simulation.
• 29-May-2002 Status report.
• 12-Jun-2002 Status report. Missing cell list.
• 26-Jun-2002 Status report. Pitiful progress on bug finding.
• 10-Jul-2002 Status report. More or less pitiful progress on bug finding.
• 11-Sep-2002 Status report. Shows improvements in stub finding at the arc boundaries, thanks to better alignment.
• 18-Sep-2002 Status report. Corrected Z algorithm looks good. Oddity with 3-hit stubs and 3-D x/y position.
• 25-Sep-2002 Status report. Found out I was using the old hit collections, which munged up the distributions somewhat. Some things look much better
• 2-October-2002 Status report. Some work on fiducials, trying to get a handle on the quality of the new stubs we get from the bug fix in the algorithm last week.
• 9-October-2002 Status report. Work on comparing the two stub-finding algorithms. A J/psi plot from the trigger data.
• 16-October-2002 Status report. Work deciding what scintillator timing cuts and Z cuts to use.
• 23-October-2002 Status report. Chi-squared mystery practically if not theoretically solved.
• 30-October-2002 Status report.
• 6-November-2002 Status report.
• 15-January-2003 Status report. Efficiency studies using Ken's sample: 87%. Evd changes available. We will keep using my old algorithm instead of Bob's.
• 22-January-2003 Status report. There are some curiosities which I don't understand. And some we do.
• 29-January-2003 Further studies on width and arrival time for the BMU.
• 12-February-2003 Width studies for the BSU, looking for masked hits. I don't find much in the way of masked hits, but do find pulses 2 and 3 times as long as usual, and a set of slightly extended pulse lengths that come from the second pulse.
• Report: Can one reconstruct the time of a masked hit from the CCU? Short answer: no.
• 19-February-2003The report.
• Report: Stub finding algorithms and residuals. Reference and how to estimate true sigmas. Updated 21-Apr-2004 to revised version.
• 26-February-2003 Proposal for trailer computing.
• 5-March-2003 Track projections to the BMU in Z.
• 19-March-2003 Report on status for Muon Software Meeting. Report on trying to use 1999 cable timing for wire to wire timing corrections.
• 2-April-2003 Report on results of loosening the cuts for Stublets. This increases the efficiency noticeably, but doesn't significantly increase the fake rate.
• 7-May-2003 Bob's comparison of triggered and untriggered scintillator timings.
• 28-May-2003 Comparison of IMU software in different recent releases.
• 11-June-2003 Study of the toroid position sensors. We have not yet calibrated these.
• 18-June-2003 Bob presents some cross-section vs luminosity numbers for various triggers, and looks at the effect of the trigger on crossing times.
• 6-August-2003 Bob's look at matching between tracks and stubs, with emphasis on our own Z determination.
• 20-August-2003 Bob's look at trigger bits vs Z.
• 10-September-2003 Bob's look at high mass dimuons.
• 17-September-2003 More of Bob's look at high mass dimuons, and crosstalk effects on the Z resolution. Dimuon Z events seem to be worse than most, because they are so radial!
• 22-October-2003 I finished the untangling of the IMU and CMX miniskirt geometries. I look at the t0 variation of the front BSU counters, and find that the variation has a sigma of 4 nsec or better--low statistics limit us.
• 29-October-2003 Working on Offline shift, I've noticed some things about memory leaks in Production.
• 5-November-2003 Bob looked at the BSU also, with more statistics. The distribution of hits with phi is unusual, and not completely understood.
• 12-November-2003 Gverify status and Bob's new t0's.
• 19-November-2003 More gverify; first results.
• Simulation talk on Gverify
• 26-November-2003 More gverify; more results.
• 3-December-2003 More gverify; same as last week (link).
• 10-December-2003 More gverify, map from GEANT 4-character names to CDF volume names.
• 28-January-2004More gverify, using the new 5.3.1pre1 geometry. Something is wrong in the silicon geometry.
• 4-February-2004. Bob's plots for efficiency using missing hits. Details of Geant daughter volumes extending beyond their mothers. (There are only about 9 general cases, but some appear many times.)
• 8-March-2004. Bob's plots for dimuons.
• 5-April-2004. More of Bob's plots for dimuons. My modifications to the stub-finding modules.
• 12-April-2004. Bob looks at delta-r.phi and his geometry model.
• 21-April-2004. Revised version of note on stub-finding algorithms and residuals.
• 21-June-2004. Bob's look at final quantity rates as a function of run number: another way of looking at the trigger.
• 28-June-2004. Double-checking GEANT's behavior.
• 6-July-2004. Trying to understand why we have 4 times more 3-hit stubs in odd half-cells than in even.
• 12-July-2004. Do we have a bad clock timing signal on one of the BSU TDCs?
• 19-July-2004. Do we have a bad clock timing signal on another one of the BSU TDCs? There are striking similarities and a curious difference. It turns out that the east side TDCs were swapped out for a new version at about that time, so we probably only had one bad TDC which went from east to west at that time.
• 26-July-2004. With more statistics, we see the same drift of t0 in all scintillator TDCs, and in the BMU wire chambers as well (though with a smaller magnitude). Is this a problem with the timing signals sent to the VME crates? If so, other groups should see similar effects.
• 9-August-2004. Bob shows scintillator times from Z decay events with no offset, caculated offsets, and corrected offsets.
• 4-October-2004. Bob showed his Z and W samples, and solicited help in figuring out why the W sample was so poor. Calorimeter cuts?
• 11-October-2004. Progress on getting luminosity dependence of various IMU rates. These will go into the (next line)
• summary document
• 1-November-2004. Bob shows drphi and looks for forward/backward asymmetry--and finds that the background is asymmetric also.
• 8-November-2004 Bob has plots of W and J/psi candidates.
• 20-December-2004 Preon model results.
• 24-January-2005 Gverify results for cdfsoft version 5.3.4, with special emphasis on SVX.
• 21-February-2005 Bob's trigger timing work.
• 28-February-2005 Bob's trigger timing work.
• 14-March-2005 GVerify talk for Tracking meeting
• 21-March-2005 Bob's slides for trigger efficiency using Z's.
• 28-March-2005 Bob's slides for scintillator efficiency using Z's.
• 2-May-2005 I fixed a problem with writing out scintillator hits associated with a stub.
• 16-May-2005 Bob has some work on transverse Z distributions.
• 22-August-2005 Bob shows how crosstalk varies with position along the wire for Z's. In a sense we're designed to find crosstalk for the most interesting muons.
• 6-September-2005 Bob looked at how to fix up the Z resolution by fixing up the delta-T with a cross-talk correction fudge term. Improvement is better than .35 nsec, or about 15%.
• 3-October-2005 OpenOffice presentation of a talk on observations in a universe with two macroscopic time dimensions.
• 17-October-2005 I looked at the search window required for using an other-Z-leg muon stub search to try to find forward tracking efficiency.
• 7-November-2005 Bob has more plots on the Z resolution.
• 14-November-2005 Bob has more plots on the Z resolution. The bug in Z positioning in simulation is fixed.
• 21-November-2005 Bob looked at the wings in the Z η distribution. The noise rates in IMU simulation now reflect current rates from data (was .0175, now is from .138 to .192 depending on layer).
• 28-November-2005 Bob looked at the efficiency as a function of maximum COT radius of the track. He sees an odd "island" at low radius--an artifact?
• 9-January-2006 Bob looked at BMU stub-finding efficiency.
• 17-January-2006 Bob looked at BMU stub-finding efficiency, requiring stronger fiducial cuts. He finds 98.4%.
• 20-March-2006 People have better Z using stiff tracks--it is 10-12 cm farther out than I have it.
• 17-May-2006 The XFT 3-layer trigger is gone. Can new mezzanine cards help us?
• 6-June-2006 The XFT 3-layer trigger is gone. Can new mezzanine cards help us? Looking a minimum bias data.
• 12-June-2006 Bob shows plots on a small drop in scintillator efficiency. I look further at what a new algorithm would buy us in trigger rates.
• 20-July-2006 The new algorithm is not quite as helpful as one would hope. The reduction in trigger rate when we require the hadron TDC bits is less than 2 times the reduction in good data rate. (We lose half the Z sample but get less than a factor of 4 reduction in overall rate.)
• 28Aug2006Bob has more work on backgrounds in Z's, looking at detector-specific stuff.
• 16Oct2006 Can we use diagnostic plots to spot oscillations quickly and distinguish them from spark-noise? Pierre says the most recent changes will go into the next release, and we find that the scintillator/BMU t0 mismatch was fixed back in 6.1.4int2.
• 23Oct2006 Can we find problematic stacks with delta-T cuts, or will this give too many false positives?
• 31Oct2006 Bob's plots show that Jonathan's idea of reducing occupancy by setting the time window to 1000 nsec is safe. Whether it will reduce readout time is another issue.
• 08Nov2006 Another look at oscillations. Since the 1000nsec cut is in place, the 800 nsec cut no longer makes sense.
• 14Nov2006 Bob's hit and width plots looking for the delta-T=40 spike.
• 16Jan2007 Varsha's talk, and our comments. The Fermilab phone is not working right.
• 12Mar2007 The deficit of 2-hit stubs reconstructed from simulation may be due to the BSU timing. I have a fix.
• 11Jun2007 -17July Looking at inefficiencies in MC reconstruction. Currently my estimate is 6.35% inefficiency. Using 6.1.4 generation the inefficiency is 16.7%.
• 27Jun2008 Looking at alignment again, using Chung's Z ntuples. There are noticeable misalignments.
• 29Jul2008 : Fix that corrects delta-X in BMU ntuples.
• 04Aug2008 :

These slides are presented here for the use of CDF collaborators; both for quick communication during phone conferences and for archival purposes. They refer to internal development work, and are not intended for publication to the general public. As of this date none of our collaborators are blind, and since none but our collaborators are likely to benefit from reading them, I see no purpose in making the postscript files accessible to the blind.

Please contact jnbt@hep.physics.wisc.edu if you have trouble accessing the information on this page.