RUN 2B L1CAL MEETING MINUTES
			     19 September, 2002


Jiri Bystricky       Noise in the L1Cal Simulation
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o see plot linked off of agenda
o Problem w/ noise implementation in L1Cal simulation
  - bugs in both old (spring 02) and new (in cvs) versions
    . note: old bug not so bad
  - without noise and smearing: both old and new agree
  - New code: bug in rounding ==> very high rates
    . negative Et val's rounded to lowest (negative) value
    . removing this bug ==> good agreement w/ old code
  - Old code: bug = noise shifted to more negative values
    . smearing also done differently
      > old on Et
      > new on E
o Differences b/w corrected new and old codes due to old code bugs
  - also minimum negative values different
    . new = 6 lsb's = -1.5 GeV
      > anything lower than this set to -1.5
    . old = -10 GeV
      > anything lower thrown out
  - cuts different
    . use >= for jet and eta thresh in new code (> in old)
  - LM finding
    . new code finds local maxima using information from all eta, then
      applies eta cuts to results
      > this is the correct thing to do
o Bug fix will be put in CVS today
o Results used for Lehman presentation
  - all are from old version of code, which is quite consistent with
    corrected new version


Paris Workshop
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o Scheduled for 4-6 November
o Will include all Run IIb Level-1 (and Level-2?) systems
o Patrick will send mail soon with the initial announcement