Prsentation PowerPoint

1
Neuchâtel - December 9th, 2004
14h00 Summary of previous meeting.
14h05 Discussion on latest news on scanning.
--h-- Discussion on status for p/m separation
analysis based on results from Lyon,
Berne and Annecy --h-- Genima - dE/dx
studies. break --h-- Discussion on
electron Test Beam based on results
from Lyon and Neuchâtel --h-- Vertex --h--
AOB
http//lappweb.in2p3.fr/damet/analysis/pimu.htm
2
Summary of previous meeting Annecy, September
16th.
  Summary of previous meeting
JérômeSimulationGenIma - Emulsion simulation
Jean Storing Emulsion Images Dominique B.
GenIma within the analysis chain Dominique
D.News on the Lyon Tracker ImadVertex tools
for Fedra Markus Data AnalysisGeneral
performances from scanning labs (Dry Oil)   
Neuchâtel Frédéric    Berne Igor Results on
p/m separation    Annecy Jérôme     Lyon
PerrineDemonstrationAutomatic emulsion
changer Presentations can be found on the web
at http//wwwlapp.in2p3.fr/damet/analysis/annecy
.html
3
Summary of previous meeting Annecy, September
16th.

• GenIma (Jean) Single mtrack reconstruction
  efficiency.
• Thin3DTracking algorithm had been emulated
• Preliminary results are consistent with those
  presented in Lyons _at_ the scanning meeting.
• Attempt to skip going through time consuming
  step of image generation.
• Next step emulation of more recent version of
  the tracking algorithm (SmartTracker7).

4
Summary of previous meeting Annecy, September
16th.

• Storing Emulsion Images (Dominique B.)
• Present format of simulated emulsion images is
  rather burdensome.
• Presentation of the FITS format.
• Made a demo and will try with GenIma images
• Next step write a note.

• OPERA chain (Dominique D.)
• The chain from GenIma to Fedra is available
  images are converted into Views trees.
• The tracker used in this chain is SmartTracker4.
• Next step, use SmartTracker7.

5
Summary of previous meeting Annecy, September
16th.
Tracker (Imad)
6
Summary of previous meeting Annecy, September
16th.

• For time being LyonTracker is twice slower but
  seems to reduce the background.
• Question on shadows How are they removed in
  Sysal?
• Question on the timeout in Sysal. If one uses
  too many triggers, that should slow down the
  scanning what happens if the timeout is reached?
  Moves to next view?
• Next steps
• Integrate LyonTracker into Sysal and compare it
  with SmartTracker7.
• Integrate it into the GenIma2Fedra chain (?)

7
Summary of previous meeting Annecy, September
16th.
Vertex (Markus)

• Presentation of an algorithm for vertex
  location.
• Results on MC data
• Estimation on error propagation and consequences
  on vertex location.
• Next steps
• Integrate algorithm into Fedra.
• Check the algorithm on test beam data.

8
Summary of previous meeting Annecy, September
16th.
Scanning performances
Neuchâtel

• 8 sheets of the Reference Brick 2004 had been
  scanned.
• Both oil and dry objectives were used
• Results are consistent one with another and
  coherent with results from other labs. .
• Next steps
• Scan larger areas.
• Electron TB

9
Summary of previous meeting Annecy, September
16th.
Berne

• Results with both configurations (oil and dry)
• Results with dry seem better than Cristianos
  reference plots.
• Noise level had been estimated using a refreshed
  but NON exposed sheet. Results were consitent
  with one from Bologna presented later _at_ Gran
  Sasso (5 mm-2)
• A question was raised on Cristianos results 1
  fake per cm2.
• Answer FAKE track ? track that is not seen by
  eye (is not in the emulsion).
• Other tracks are real (background) tracks that
  are in the emulsion.

10
Summary of previous meeting Annecy, September
16th.
p/m separation
Annecy

• Estimation of cosmics integrated in the emulsion
  used _at_ PSI
• 750 m cm-2.
• 1st qualitative analysis of the test spread od
  the beam.
• Pb with the brick exposed to muons, scanned both
  Swiss labs ???

Lyon

• recalled results on high/low energy separation
  by looking _at_ grains/layer.
• Results on PSI 2003 scanned with 1 layer/mm and
  same area for each sheet give a hint on p/m
  separation.
• PSI 2004. Noticed a difference in thickness
  (44mm-m 49mm-p)
• Scanned area increases as one goes deeper in the
  brick.
• Found 1000 cosmics identified 100 low E
  particles cm-2 m brick
• Found 5000 cosmics identifies 300 low E
  particles cm-2 p brick

11
Summary of previous meeting Annecy, September
16th.