Resolution Parametrization
This describes how resolution is parametrized in the SVT reconstruction. One might consider adapting these methods for SVT Bogus
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In the current reconstruction, the resolution (as determined from Monte Carlo truth and space points) for a given layer and side is a function of the cluster width. Here is a summary of the empirically determined sigmas (the units are microns, I think):
Inner layers
| Side |
Width |
Sigma |
| xy |
1 |
12.3 |
| z |
1 |
14.5 |
| xy |
2 |
8.4 |
| z |
2 |
12 |
| xy |
3 |
9.5 |
| z |
3 |
17.9 |
| xy |
4 |
9 |
| z |
4 |
20.2 |
| xy |
5 |
9 |
| z |
5 |
22.5 |
| xy |
6 |
9 |
| z |
6 |
23 |
Outer layers
| Side |
Width |
Sigma |
| xy |
1 |
16.7 |
| z |
1 |
38.6 |
| xy |
2 |
9.6 |
| z |
2 |
23 |
| xy |
3 |
13.2 |
| z |
3 |
29.1 |
| xy |
4 |
15.1 |
| z |
4 |
35 |
| xy |
5 |
22.5 |
| z |
5 |
45 |
| xy |
6 |
23 |
| z |
6 |
46 |
Note that this resolution is for beta=1 particles and is averaged over pulse height. Strictly speaking, the resolution does depend on pulse height in a non-trivial way, and this should probably be taken into account.
natalia@charm.physics.ucsb.edu