[d2n-analysis-talk] Target section

[Zein-Eddine Meziani]

Hi Diana,

Please find attached an update of the text of the target section after  
some tweaking. Since I had to copy the text from your  pdf file  you  
will need to fix some of the Latex details. I tried to put Latex  
characters were I could but I am sure I have missed some.

Cheers,

Zein-Eddine
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On Dec 4, 2010, at 5:23 PM, Diana Parno wrote:

> Hello all,
>
> I ran a test of the farm replays with the modified .odef file I sent
> to the list last night. Much to my surprise, the result was an
> additional factor-of-3 reduction in file size (on top of the factor-
> of-4.5 reduction from cutting out events with no tracks). My fully
> replayed sample run, 2024, now takes up only 2.6 GB of disk space in
> root files. (Before the above changes, it occupied 30.7 GB.)
>
> I've now investigated this result, and I believe that the main source
> of file size reduction is that the BB.mwdc.* block is no longer being
> written to the root files. This block represents 628 branches, and the
> majority of these are arrays, so they do take up quite a lot of room.
>
> This level of reduction in file size would go a very long way in
> solving our immediate space problems. Before moving forward and
> submitting these jobs to the farm, though, I want to make sure this is
> a sensible step. Are the MWDC calibrations currently in a finished
> state, or do we expect to need these MWDC files for a wide range of
> BigBite runs? If the latter, are there particular variables we expect
> to need (so that we can strip out the others), or do we require the
> whole kit and caboodle? Matt, I think you're the MWDC expert, so I'm
> especially hoping you can weigh in.
>
> Best,
> Diana
>
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