parameters/eta_param/README.txt

In addition to the previous version (see text below) I applied a cut on the
cluster charge (about 1.5 MIP) and I kept the ,ultiplicity cut, but looser.

=========================================================================
This parameters have been obtained from 2005 data. 
The definitions of eta2, eta3 and eta4 have been modified according to the
discussion with Prof. Landi.
In particular:
- the baricenter with 2,3 or 4 strips is calculated even if not all the strip
are over threshold
- the correction function for eta4 is defined in the range -0.5:0.5 
and not -1:1 as it was before.

For the moment the multiplicity selection is kept.
The next improved parameters sets should have:
- no multiplicity cut (eventually replaced with a cut on the cluster charge)
- defined as a function of the effective angle (corrected for the magnetic
field)
- implemented the systematic shift due to charge distribution asimmetry
1	In addition to the previous version (see text below) I applied a cut on the
2	cluster charge (about 1.5 MIP) and I kept the ,ultiplicity cut, but looser.
3
4	=========================================================================
5	This parameters have been obtained from 2005 data.
6	The definitions of eta2, eta3 and eta4 have been modified according to the
7	discussion with Prof. Landi.
8	In particular:
9	- the baricenter with 2,3 or 4 strips is calculated even if not all the strip
10	are over threshold
11	- the correction function for eta4 is defined in the range -0.5:0.5
12	and not -1:1 as it was before.
13
14	For the moment the multiplicity selection is kept.
15	The next improved parameters sets should have:
16	- no multiplicity cut (eventually replaced with a cut on the cluster charge)
17	- defined as a function of the effective angle (corrected for the magnetic
18	field)
19	- implemented the systematic shift due to charge distribution asimmetry