Subject:
Date: Tue, 25 Feb 2003 20:29:10 +0100 (CET)
From: Juan Jose Gomez Cadenas <Juan.Jose.Gomez.Cadenas@cern.ch>
To: ps-proj-hadroprod@listbox.cern.ch

Summary of LA-reconstruction/Analysis meeting 25-02-03
-------------------------------------------------------

1) There was a short discussion concerning t0. Friedrich remarked that t0
is computed from TOF-A and TOF-B information, using an algorithm written
by Misha. The relevant information is available in the ntuple.

2) The schedule for protoproduction was reviewed.
    --Application ready (Anselmo, Simone) -- thurday 28-02
    --protproduction finished (3 settings, Charles) -- monday 3-03
    --chech protoproduction. Examine relevant ntuple variables to
      guarantee that there are no bugs or missing information.Feedback
      (to Malcom, JJ). Small corrections, if needed.
     (detector experts) ---friday 7-03
    --Review and authorize start of production (Analysis meeting)  11-03

    This is a CONSERVATIVE schedule which must be read as "It should not
    happen later than". In a more agressive scenario the production will
    start a few days earlier.

3) The following detector experts were proposed to take the responsibility
checking protoproduction ntuples.
     1) Large Angle ---coordinated by Gabriella
     2) CHE         ---Marco
     3) TOF         -- Danielle
     4) Ecal        -- Domizia
     5) Trigger     -- Alex
     6) Beam        --Piotr, Geoff

DETECTOR EXPERTS ARE KINDLY REQUESTED TO CONFIRM THEIR AVAILABILITY FOR
PROTOPRODUCTION STUDIES (NB, SCHEDULE ABOVE)

4) The strategy of ntuple production was next discussed. The issue of man
power was reviewed. The production needs to be run by detector experts.
The
following preliminary arrangement was proposed:
  1) Oxford   -- 1 person (Charles)
  2) INFN (Padova, Milano...)   ---- 1 person (to be identified)
  3) Dubna --- 1 person (+) (to be identified)

5) Finally there was a discussion about the calibration strategy itself.
Friedrich defended that priority should be given to those data sets
relevant
for the forward and LA analysis, with a view of presenting preliminary
results
in July. Those are:
   a) K2K target and beam
   b) Mini Boone target and beam
   c) Water target (Gabriella pointed that this requires calibration with
   a dense target, say Tantalum)

Jaap pointed out that the calibration effort should not be limited to
those
specific data sets but had to encompass all relevant sets to guarantee
full
detector calibration for 2001 and 2002 data. He argued that the effort to
set
up the calibration machinery for the various subdetectors was the
time-conuming part of the task and it has to be done anyway. Calibrating
the
detector for a very specific configuration seemed a waste of resources,
since the whole process had to be started again in the future. Thus he was
strongly in favour of an strategy that would guarantee the calibration
of the detector over the whole relevant data set.

Friedrich pointed out that this effort would take too long and therefore
would prevent preliminary physics results for the summer, which he
considers
a must.

THe discussion was postponed, also with a view of obtaining imput from
detector leaders.

Finally, Ugo Gastaldi presented his ideas concerning a possible technical
publication.

Regards, JJ