[d2n-analysis-talk] Run Sheets

[Brad Sawatzky]

On Fri, 23 Apr 2010, David Flay wrote:

> I've spent most of the day writing a script that can check our current
> optics matrix, and I'm getting to the point of making some plots.
> 
> However, despite compiling a list of optics runs (I determined this
> list from the Halog):
> 
> https://hallaweb.jlab.org/wiki/index.php/List_of_special_runs_(d2n)
> 
> (see LHRS Optics Calibration section),
> 
> I am not sure of whether or not we have runs utilizing the Optics
> target (with the 7 Carbon foils; 1 is out of the acceptance range, I
> believe), as I don't necessarily trust what we see in this table...
> this table suggests that we did not take runs on the multi Carbon-foil
> target -- is this true?

That would surprise me...  I would hope we have some foil data from the
d2n period.

The definitive way to determine what target was really in place is to
check the target encoder position stored in EPICS.  Those data are
in the start- and end-of-run halog entries, and are stored in the coda
files themselves.  It's usually easiest to parse the halog start of
run entries -- I'll provide a dump of the halog on d2n.jlab.org.  A
little perlfu can extract the real target positions.

I've got the run-sheets in my office.  I'll look into getting them
scanned and will send you a copy as soon as I can.

-- 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