Meeting No7 - Tantalum run analysis with new DB.

I have re-analyzed the majority of Tantalum runs with new database DB-20080508. I believe that this is the database, that Mitra is using.

New DB vs. Old DB

Fitting results:

2356:

2874:

2875:

2876:

2877:

2883:

3108:

3109:

3111:

4388:

4517:

4644:

4671:

4672:

4755:

Analysis:

1.) Red points represent a reconstructed momentum of electrons that scattered off the Tantalum target, assuming that central momentum of the spectrometer and the beam energy were stable and fixed the whole time.

2.) Green points represent corrected points, where we consider that Central momentum of the spectrometer is not fixed the whole time and that beam energy was changing slightly during the experiment. We can see, that when we apply these corrections, the measured points become more consistant. This means that relative Tiefenbach values seem to be correct and that Nilangas formula works properly. If this would not be true, than points would not become consistant, when we would apply corrections.

Momentum of scattered electrons:

Beam energy:

To-Do:

Before continuing with rest of the data (H, C, etc.) I would like to repeat this tantalum analysis with "Doug's good old Database".

Last modified: 10/06/09