[G12] Beam Correction II

[JLab]

Works for me

BR
MK

Sent from my iPhone

On 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
>> 
>