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[Fwd: Re: Bug Found!!]






Hi David,

Excellent! Hopefully things will look better now. I'll work on getting 
some resolutions out this weekend from some of the files already 
generated while run 2334 finishes .

-Blake

David Lawrence wrote:
>
> Hi Blake,
>
>    I finally found the bug that was causing the problems in the BCAL 
> timing. It was in the code that determined the reference time to 
> subtract off of the TDC value. I have fixed it, committed it to the 
> repository and have submitted jobs to the farm to re-generate the 
> bcal_dst files for the following runs:
>
> 02319
> 02322
> 02323
> 02324
> 02332
> 02333
> 02334  <-- added 2 more files to the list to try and triple statistics
> 02435
> 02436
> 02440
> 02456
> 02457
> 02458
> 02459
> 02460
> 02475
> 02476
>
> They should show up in the normal place over the next day(s). I have 
> moved all of the old bcal_dst and bcal_mon ROOT files into a directory 
> named "old" should you still need them.
>
> When I look at a few events from run 2440, I can see that there is now 
> 300ps resolution between the tagger and the BCAL for photons>500MeV.
>
> bcal->Draw("(tn8+ts8)/2.0+tphoton","Nphotons==1 && 
> abs((tn8+ts8)/2.0+tphoton-531)<10 && Ephoton>500")
>
> Let me know if you have any problems with them.
>
> Regards,
> -David
>