[d2n-analysis-talk] PR E/p Calibration

[David Flay]

Brad,

I remember Chiranjib using my calibration coefficients for his analysis --
but I can check with him if he's made changes, or if he saw a different
result


On Wed, Oct 28, 2009 at 10:23 AM, Brad Sawatzky <brads at jlab.org> wrote:

> On Wed, 28 Oct 2009, David Flay wrote:
>
> > One thing I could do is do the calibration for each kinematic -- I
> > checked the (pion) peak positions in the block ADCs and some don't
> > line up to where they should be for other kinematics (different from
> > the calibration kinematic of p = 1.13).  However, this still doesn't
> > explain the trend.  I checked my code that calculated the
> > coefficients, and I had already commented out all the stuff that was
> > 'fudging' the numbers to get E/p centered at 1.
>
> At some level it doesn't matter much since the absolute energy
> calibration of the pion-rejector (ie. from momentum setting to momentum
> setting) isn't important.  It would be nice to make some sense of it
> though...
>
> Do the Transversity guys see the same trend in their analysis?
>
> -- Brad
>
> --
> Brad Sawatzky, PhD <brads at jlab.org>  -<>-  Jefferson Lab / Hall C / C111
>  Ph: 757-269-5947 -<>- Pager: 757-584-5947 -<>- Fax: 757-269-7848
> 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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-- 
-----------------------------------------------------------
David Flay
Physics Department
Temple University
Philadelphia, PA 19122

office: Barton Hall, BA319
phone: (215) 204-1331

e-mail: flay at jlab.org
          david.flay at temple.edu

website: http://www.jlab.org/~flay
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