[G14_run] G14 work on TOF

[Franz Klein]

Haiyun,
overall the SC offsets in pass0/v5 look quite large for some run ranges!
This may be in part due to ST offsets, which differ between protons and 
pions by -0.1 nsec ... likely due to poor timewalk correction for ST?!),
but also SC calibration (if proton and pion offsets differ a lot, check 
gmean (and timewalk)):

until run 68188 ~0.2 nsec for both proton and pion,
runs runs 68188-68305 ~0.2 nsec for pion and ~0.33 nsec for proton 
(difference between proton and pion likely due to ST),
runs 68772-68779 ~0.19 nsec for pion and ~0.32 nsec for proton 
(difference between proton and pion likely due to ST),
the next runs until 68998 poorly calibrated for ST and SC!
runs 69002-69044 ~ -0.28 nsec for pion and ~ -0.15 nsec for proton 
(difference between proton and pion likely due to ST),
runs 69061-69113 ~0.42 nsec for pion and ~0.6 nsec for proton,
runs 69114-69147 ~0.22 nsec for pion and ~0.39 nsec for proton,
runs 69155-69369 and 69501-69597 have small absolute offsets but 100 psec 
difference between pion and proton (likely due to ST),
for 69370-69500 ~ -0.33 nsec for pion and -0.2 for proton 
(difference between proton and pion likely due to ST),
runs 69604-69640 ~0.2 nsec for pion and ~0.37 nsec for proton.

At this stage corrections for SC and ST depend a lot on each other except 
individual paddles and large overall offsets: if you focus on these and 
let Jamie work on ST, we should be in good shape.

Greetings
Franz

On Mon, 13 Aug 2012, Haiyun Lu wrote:

> Dear Reinhard,
>   I corrected all the runs with different offsets. Almost all runs
> should show very little offsets now. My corrections are based only on
> pions. The fact that the offsets are different for pions and the protons
> is out of my control. It most likely links to some other calibrations or
> corrections.
>
> Cheers,
> Haiyun
>
>
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===============================================================
                   Franz J. Klein, Associate Professor
                   CUA, Department of Physics
                   Washington, DC 20064
   office: Hannan Hall 206          phone: 202-319-6190
   or: Jefferson Lab,CC F-243       phone: 757-269-6672
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