[g13] easter egg is cooked

[Yordanka Ilieva]

Hi All,

I checked the TOF and ST related Delta_t distributions for the newly 
cooked run. The results are as follows:

- Delta_t_pions for TOF paddle 31 in sector 1 is  currently at 4.598 ns. 
This value must be subtracted from its current paddle-to-paddle 
constant. Danny - could you please look at that? The uncertainty of the 
above value is 0.014 ns. It seems that paddle 31 in sector 1 is being 
fluctuating around. It is unclear how many other runs would need this 
paddle to be brought back to zero. Instead of halting the cooking at 
each run and checking this paddle, I would suggest we go on with the 
cooking and deal with the paddle at analysis level. There is a valid 
mass distribution from paddle 31 but the peaks are shifted towards 
higher masses. One can devise a separate PID scheme for that TOF channel.
- All the other TOFs look normal.
- Delta_t for Paddle 1 in ST  is at approximately 0.108 ns. This is 
consistent for both negative and positive pions. For all the other ST 
paddles, the location of the peak is closer to or consistent with zero. 
Chuck could you look at this paddle?

With respect to the monitoring of g13b, all the monitoring programs are 
ready and I will be submitting  first farm jobs close to the end of the 
week.

All the best, Yordanka


Ken Livingston wrote:
> Hi All,
> File 53312_A00 is cooked.
>
> The results are in 
> /work/clas/clasg13/pass1/v3
> and 
> $COOK_LINKS/pass1/v3/
> and
> /mss/clas/g13/production/pass1/v3/
>
> I've made a root file of the anahists.
> http://www.jlab.org/~clasg13/anahist_053312_A00.root
>
> If you can break off the Easter celebrations, please have a look before
> tomorrows meeting.
> In particular, are update calibrations OK.
> Gflux ?
>
> Cheers,
> Ken
>
>
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