First PXL low lumi run

 The first set of runs were taken on Friday evening. (5/16/2013)
I collected the notes I send out to the mailing list, and added two online plots for illustration.

The low lumi run had ZDC rates of ~4.2Khz.
The nortmal high lum running is 400-250KHz.
Thus this was at roughly 1%.
- Suggestion is to go to ~ 3% to try to get back sufficient rate at higher mult events near z~0, once we have good PXL settings.

See the follow file   and sketch for the desteering effect.