[d2n-analysis-talk] LHRS Trigger Efficiency Study

[Brad Sawatzky]

On Wed, 14 Jul 2010, David Flay wrote:

> so the 'latch pattern' essentially stores those triggers that came
> within XXX ns of the L1A trigger in the DL.lbit* variable?  (and is

That's what the TS 'latch pattern' does.

> NOT the 'before prescale' trigger as I was initially thinking)

[ . . . ]
> Is there a variable in EPICS to get the prescale? (the link you sent out
> mid-June about the EPICS variables doesn't seem to work)

This link still works.  Was there another one?
  https://hallaweb.jlab.org/wiki/index.php/List_of_Analyzer_ROOT_variable_names

I think the EPICS vars get put in the E.* tree.  The prescales aren't
really epics variables, but I think they might be parsed by the same
class.

The BBNormAna (and THaNormAna) classes also need the prescales.  You
could see how they retrieve them too.

-- Brad

-- 
Brad Sawatzky, PhD <brads at jlab.org>  -<>-  Jefferson Lab / Hall C / C111
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