[g13] easter egg is cooked

[Pawel Nadel-Turonski]

Chuck,

 From your plots it seems that the time difference between the st and 
the tagger is 0.0782 ns, which is not too far from the value of 0.108 ns 
that Yordanka got from the monitoring. However, I do agree that this may 
be something we can live with. :)

    Pawel

ctaylor at jlab.org wrote:
> I checked all the paddles for run 53312, and don't see a problem with
> paddle one. The only paddle that is out is paddle 9, but I believe that
> one as always been a bit off. You can see all the plots for this run here:
>
> http://clasweb.jlab.org/rungroups/g13/wiki_secure/index.php/ST_paddle_to_paddle
>
> Let me know if you would like me to do something different.
>
> -Chuck
>
>
>   
>> 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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>>>
>>>       
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>
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