2/20/17 --> analysis of cal_scan data after tune up of the global timing

For the calorimeters it looks like a consistent ~2ns shift from run 16 AuAu settings
for the EMCs

Run 17 pp500 TCD settings with this consistent shift are:

BTOW = 120ns (was 122 AuAu)
ETOW = 103ns (was 105 AuAu)
ESMD  =  62ns (was 64 AuAu)

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BTOW *****
run 18051044 cal_scan analysis - see files attached
0x01-0x0f: 119.8ns av (crate 0x0a missing)
0x10-0x1e: 119.2ns av
total average: 119.5ns

run 18051048 cal_scan analysis - see files attached
0x01-0x0f: 119.4ns av (crate 0x0a missing)
0x10-0x1e: 120.3ns av
total average: 119.9ns

ETOW *****
run 18051044 cal_scan analysis (omit noisy crate 4) - see files attached
103ns
run 18051048 cal_scan analysis (omit noisy crate 4) - see files attached
103ns

ESMD *****
see plots produced by TIng Lin at link (also reproduced the other plots -> thanks!)
https://drupal.star.bnl.gov/STAR/blog/tinglin/run-17-pp500-emc-timing
run 18051048 cal_scan analysis (lower statistics run)
~ 62.8ns average over all crates