aug-22-2003
we have discussed the status of analysis of 2003 data.
here is the summary of the discussion.

1.  data sets taken so far: 
============================

o muons and electrons into bare (no-ECAL) HB

o muons and electrons into bare (no-ECAL) HE, without L0 attenuation

o muons and electrons into bare (no-ECAL) HE, with L0 attenuation of 0.2

o ECAL+HB+HO, eta/phi= 8/4

o ECAL+HE, with independent L0 readout, eta/phi=19,4

o ECAL+HE, with single fiber L0 readout, eta/phi=19,4

o ECAL+HE, with single fiber L0 readout and 0.4 filter, eta/phi=19,4

o ECAL+HE, with single fiber L0 readout and 0.4 filter, eta/phi=23,4/5

o ECAL+B+HO, eta/phi= 3/6

o electron energy to bare HE, eta/phi= 19/4

o crack region (just starting to take data)

2. data set documentation
===========================

we would like to have a summary of each data set available 
on web. the summary should include lit of good runs,
indication of phi and eta towers, particle type, extra comments, if 
needed.
the format of this file has been agreed upon by pawel and shashi.
plese send info about run summaries for each of the above data set
to pawel.  

3. HO/HB analysis
==================

a nice procedure to extract signal peaks (gaussian fits) for muons in HO
was developed. 

typical light yields in HO:
Ring0: 4-6 fC
ring1: 3-4 fC
ring2: 2-3 fC

note: pedestal RMS is typically 0.6fC/time slice, 0.2fC/8 time slices.

we would like to know what is the spread of muons signals in HO
within a single RM, and what is the spread of signals from RM to RM
(first number will tell us about light yield variation of tiles,
the second about gain*qe variations between RMs).


shashi reported that some runs have low pedestal values.
(between 0 and 1).
nominally it should be between 3 and 4.


4. HE analysis
===================

analysis of electron energy scan  into bare HE:
 
  -----> stochastic term : 60%/sqrt(E), 
         constant term 4%.

analysis of pions into bare HCAL (no ECAL)

  -----> stochastic term : 110%/sqrt(E), 
         constant term 4%.

data with ECAL: 

   tower(19,4):   individual L0 readout
                  0.5 reduction for L0 
                  0.2 reduction for L0

   tower(23,4/5): 0.2 reduction for L0

 
best (ecal+alpha*L0+hcal) energy  resolution is for alpha 0.2 to 0.5
however gaussian fits ignore high and low energy tails.
RMS is more sensitive to tails, but we can only use RMS as a measure
of energy resolution, if we have clean beam.
the cleanest beam was for 200gev pion runs.

-->if we consider RMS, then alpha=0.2 is most favoured. (no high tails)
--> we would like to take data with alpha=0, 0.2 and 0.3, 0.5
    direct measurements for clean 200gev pion beam again.

--> we would like to add transverse scan of HE, to find out uniformity
    and leakage in HE.
                         

5. HF analysis
=================
two wedges measured
o channel-to-channel uniformity 
o electron scans
o pion scans

o request for 20gev pions made, but probably not realistic to get 
any 20 gev pions in this year's setup
o next year we will have 3-9 gev pion beams in H2

6. ECAL calibration status
============================

o for every ECAL+HCAL data set, we record calibration runs
  (defocused 100gev e- beam, 14x14 trigger).
  with one central measurement (xtal25) and four corner  measurements
  we electrons to every crystal.
o expect to provide calibration constants (with few days delay) for
  every data set recorded
o need to use these cal. constants in reco

7. Run plan for remaining 8 1/2 days (till Sept 1st)

   Fri-Mon     53deg crack study, pion energy scan, for eta=15 thru 19
               Ck signal in fibers? study
               HE orange cables hooked up to HTRs

   Tue         HF phase study, energy scan

   Wed         24h machine dev. time (noon -till noon)
               laser runs
               daq development (moe1+moe2, by jeremy)

   Thu-Fri     HE direct alpha measurement (0, 0.2, 0.3, 0.5)
               HE transverse scan (in eta and phi)

   Sat-Mon     switch to HO orange cables
               ECAL+HB+HO for eta/phi=10/4
               muon signal in HO vs HV of HPD study

   Tue-???     wire sourcing of HB, HE, HO