[G12] Beam Correction II

[Johann Goetz]

sounds good to me.

On Mon, Nov 7, 2011 at 10:08 AM, <mpaolone at jlab.org> wrote:

> Hey everyone,
>
> It looks like a lot of work has been done since our last meeting on Friday
> afternoon.  I propose a g-12 Beam Correction meeting early this week to
> discuss the results, address questions, and coordinate efforts between
> everyone involved.  For this meeting, we only need the main beam
> correction people to attend (Mukesh, Craig, MK, Johann), but anyone who is
> interested is encouraged to join us also.
>
> So how does Tuesday afternoon sound?  Say at 2pm?
>
> -Michael
>
>
> > Looked at another way, the correction factor changed from 0.584% to
> > 0.509%, a change of 584/509=1.15. Can you
> > do better to get a more accurate correction with less uncertainty?
> >
> > From: g12-bounces at jlab.org [mailto:g12-bounces at jlab.org] On Behalf Of
> > Johann Goetz
> > Sent: Monday, November 07, 2011 8:20 AM
> > To: Michael C. Kunkel
> > Cc: g12
> > Subject: Re: [G12] Beam Correction II
> >
> > seems like the error in your result (the 1.00584) is maybe 0.001 or so.
> Is
> > that reasonable?
> > On Sun, Nov 6, 2011 at 5:47 PM, Michael C. Kunkel
> > <mkunkel at jlab.org<mailto:mkunkel at jlab.org>> wrote:
> > On 11/6/11 6:32 AM, Dennis Weygand wrote:
> > What exactly does 'manually' mean?
> >
> > On Nov 4, 2011, at 8:53 PM, Michael C. Kunkel wrote:
> >
> >
> > Greetings G12'rs
> >
> > I have realized if I do a manual fit to find the correction value, I can
> > obtain different correction values for the beam.
> >
> > My previous email had a correction factor of 1.00509. When I do it
> > manually I get a correction factor of 1.00584.
> >
> > I have attached the new plot for run 56515. There is now only a 2.78 MeV
> > difference in the mass peak from the expect.
> >
> > I know believe this is the correct path to undertake for the beam
> > corrections.
> >
> > BR
> > MK
> >
> > <corrected_plotII.jpg>_______________________________________________
> > G12 mailing list
> > G12 at jlab.org<mailto:G12 at jlab.org>
> > https://mailman.jlab.org/mailman/listinfo/g12
> >
> > --
> > Dennis Weygand
> > weygand at jlab.org<mailto:weygand at jlab.org>
> > (757) 269-5926<tel:%28757%29%20269-5926> (office)
> > (757) 870-4844<tel:%28757%29%20870-4844> (cell)
> >
> >
> >
> >
> > It means, instead of having ROOT do a TF1 fit with initial parameters and
> > allowed variances, I open the histogram, right click the histogram, open
> > fit panel, manually set my limits ..etc.....ie manually
> >
> >
> > BR
> > MK
> >
> > _______________________________________________
> > G12 mailing list
> > G12 at jlab.org<mailto:G12 at jlab.org>
> > https://mailman.jlab.org/mailman/listinfo/g12
> >
> >
> >
> > --
> > Johann T. Goetz, PhD.<http://sites.google.com/site/theodoregoetz/>
> > jgoetz at ucla.edu<mailto:jgoetz at ucla.edu>
> > Nefkens Group, UCLA Dept. of Physics & Astronomy
> > Hall-B, Jefferson Lab, Newport News, VA
> > Office: 757-269-5465 (CEBAF Center F-335)
> > Mobile: 757-768-9999
> > _______________________________________________
> > G12 mailing list
> > G12 at jlab.org
> > https://mailman.jlab.org/mailman/listinfo/g12
> >
>
>
>


-- 
Johann T. Goetz, PhD. <http://sites.google.com/site/theodoregoetz/>
jgoetz at ucla.edu
Nefkens Group, UCLA Dept. of Physics & Astronomy
Hall-B, Jefferson Lab, Newport News, VA
Office: 757-269-5465 (CEBAF Center F-335)
Mobile: 757-768-9999
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://mailman.jlab.org/pipermail/g12/attachments/20111107/d2313b72/attachment.html