Run XVIII AuAu27 part I dE/dx with respect to part II calibration.

 I have compared the results of production on part I AuAu27 dE/dx (RunXVIII201)  with respect to the final part II AuAu27 dE/dx calibration (RunXVIII137):

1. Relative dE/dx resolutions versus track length in TPC for part II ( 137) and part I (201) are practically the same.


2. Shifts are compatible.

3. RunXVII137 dE/dx 

4. RunXVII201 dE/dx 

  The dE/dx calibration done for RunXVIII AuAu27 Part II is working also for Part I.