[d2n-analysis-talk] Multi-Carbon Target With Transversity's Matrix Elements

[Brad Sawatzky]

On Tue, 27 Apr 2010, David Flay wrote:

> I've done a replay utilizing Transversity's Matrix Elements.
> 
> The resulting plot is attached.  I also provided the plot from earlier
> today, so you may compare.

I presume the LHRS angle was set to 45 degrees?  Are the survey data on
the LHRS incorported into our DB?

> It's clear that the transversity matrix elements do some minor fixing
> on the <end> peaks -- but not quite aligning things.
> 
> So, it seems I'll dive on into a full-on calibration?

This really should not be necessary unless the Transversity calibration
was done poorly...  The LHRS optics should be independent of the HRS
angular position.  Once the HRS survey data for the d2n position are in
our DB, then the d2n LHRS resolutions should be identical to
Transversity's.

> P.S. -- A quick skim of the Halog (non-automatic entries) reveals we
> have no sieve-IN data for the LHRS... Should I then be looking at
> Transversity data?

Yes, but a re-analysis really should not be necessary.

-- 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