```FERRARA`S GROUP
DISCUSSION
29-04-08
COMPARISON BETWEEN OLD
NTUPLA vs THE NEW ONE
OLD NTUPLA vs NEW GEOMETRY (GAUSS V30R4) ALL PADS
(WITHOUT CORRECTION X DIFFERENT Z)
COLUMN`S EDGES, REGION R4,
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Simone Brusa, INFN sezione di Ferrara
2
OLD GEOMETRY BOTH
GAUSS V25R12 vs NEW GAUSS V30R4 ALL PADS (WITHOUT
CORRECTION X DIFFERENT Z)
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Simone Brusa, INFN sezione di Ferrara
3
NEW GEO vs OLD GEO, NEW GAUSS
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Simone Brusa, INFN sezione di Ferrara
4
OLD GEO vs NEW GEO ALL PADS WITH Z
CORRECTION IN THE CTALK SELECTION
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Simone Brusa, INFN sezione di Ferrara
5
OLD GEO vs NEW GEO JUST FIRST PAD
SELECTED
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Simone Brusa, INFN sezione di Ferrara
6
NEW GEOMETRY
Z CORRECTION vs JUST FIRST PAD
SELECTED
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Simone Brusa, INFN sezione di Ferrara
7
OLD GEOMETRY
GAUSS V25R12 vs GAUSS V30R4 JUST
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Simone Brusa, INFN sezione di Ferrara
8
OLD GEOMETRY
GAUSS V25R12 vs GAUSS V30R4 JUST
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Simone Brusa, INFN sezione di Ferrara
9
Residual differences between old ntupla and old
geometry with new gauss just first pad selected
OLD
NEW
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Simone Brusa, INFN sezione di Ferrara
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CONCLUSIONS
seems to be due mainly to a bad selection of the events with CTALK.
The condition:
if(z[i]!=0 && z[i]== z_CT[iMS])
cuts the events that have geometrical crosstalk between adiacent columns
and rows of chambers.
2. Since the Xpad-XMChit distributions are almost the same (see slide 8),
why the residual distribution it`s worse than before (same geometry, should
It`s just related with the new more realistic binning than in the past?
3. Suggestion in order to unselect the pads at the edges of the chambers:
To fix M2-M3 instead of M1-M5, in these way we don`t need to rebin 4.
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Simone Brusa, INFN sezione di Ferrara
11
SPARES
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Simone Brusa, INFN sezione di Ferrara
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OLD NTUPLA vs NEW GEOMETRY (GAUSS V30R4) ALL PADS
(WITHOUT CORRECTION X DIFFERENT Z)
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Simone Brusa, INFN sezione di Ferrara
13
OLD NTUPLA vs OLD GEOMETRY (NEW GAUSS V30R4) ALL
PADS (WITHOUT CORRECTION X DIFFERENT Z)
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Simone Brusa, INFN sezione di Ferrara
14
NEW GEO vs OLD GEO, NEW GAUSS X
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Simone Brusa, INFN sezione di Ferrara
15
OLD NTUPLA vs NEW GEOMETRY ALL PADS WITH
CORRECTION X DIFFERENT Z IN THE CTALK
SELECTION
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16
OLD NTUPLA vs NEW GEOMETRY JUST
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17
NEW GEOMETRY
Z CORRECTION vs JUST FIRST PAD SELECTED
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18
OLD GEOMETRY
GAUSS V25R12 vs GAUSS V30R4 JUST FIRST PAD
SELECTED
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19
```