[d2n-analysis-talk] BigBite Farm Replay: MWDC variables

Brad Sawatzky brads at jlab.org
Sun Dec 5 19:19:05 EST 2010


Forward to the list so others can comment.

-- Brad

On Sat, 04 Dec 2010, Diana Parno wrote:

> The ratio of events with tracks to events with no tracks seems to be
> pretty consistent with the runs I've looked at recently -- about
> 15.5%, give or take 0.1%, according to the cut summary. It will be
> very straightforward to plot this as a function of run number, so we
> can definitely keep an eye on its behavior.

Good. that should certainly be part of the 'sanity-check' histograms.

Do you recall if that 15.5% is comparible to what GEn ended up with?  I
would think that GEn should have been considerably worse than us because
they did not have a Cherenkov in the trigger.  I recall  there were a
huge amount of gammas firing the shower counter -- a lot (?) of those
inherently trackless triggers should have been suppressed in the T2
trigger.

-- Brad

-- 
Brad Sawatzky, PhD <brads at jlab.org>  -<>-  Jefferson Lab / Hall C / C111
Ph: 757-269-5947  -<>-  Fax: 757-269-5235  -<>- Pager: brads-page at jlab.org
The most exciting phrase to hear in science, the one that heralds new
  discoveries, is not "Eureka!" but "That's funny..."   -- Isaac Asimov


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