[b1_ana] Fwd: Systematic Errors

[Patricia SOLVIGNON]

Here is the proposal Steve is talking about:



Patricia

-- 
Patricia SOLVIGNON
Staff Scientist
Jefferson Lab

Current address : 
Jefferson Lab
Suite 6, MS. 12H4                               Room C121 (Cebaf Center)
12000 Jefferson Avenue                      Office:   (757)-269-6933
Newport News, VA 23606

On May 10, 2013, at 3:21 PM, "O. A. Rondon" <or at virginia.edu> wrote:

> Hi Steve,
> 
> Which proposal number is this experiment? I've looked at E94-110,
> 99-118, 02-109, 03-103, 04-001, and 06-009, all about R on deuterium or
> nuclear targets, and none have an Appendix B on p.29 discussing
> systematic errors.
> 
> Or maybe you have a version that is different from those posted below?
> http://www.jlab.org/div_dept/physics_division/experiments/
> 
> Thank you and cheers,
> 
> Oscar
> 
> Patricia SOLVIGNON wrote:
>> Begin forwarded message:
>> 
>>> *From: *"Stephen A. Wood" <saw at jlab.org <mailto:saw at jlab.org>>
>>> *Subject: **Systematic Errors*
>>> *Date: *May 10, 2013 1:52:08 PM EDT
>>> *To: *Patricia Solvignon-Slifer <solvigno at jlab.org <mailto:solvigno at jlab.org>>
>>> 
>>> Patricia:
>>> 
>>> I think the table in Appendix B (page 29) of the Nuclear Dependence of R 
>>> proposal might be a good guide of what time dependent/point to point 
>>> systematic errors to consider in b1.  Like b1, measuring R is essentially 
>>> subtracting two cross sections to get a difference that is a small fraction of 
>>> the cross sections.  For b1, ignore the specific numbers presented.  I believe 
>>> the numbers in the table just get copied around between proposals and theses, 
>>> and some of these systematic errors come from the fact that one has to change 
>>> beam energies and spectrometer settings.  But it would be worthwhile to think 
>>> about each item in the list and consider whether it is relevant to b1 and how 
>>> well it can be controlled.
>>> 
>>> Steve
>>> 
>> 
>> 
>> ------------------------------------------------------------------------
>> 
>> 
>> 
>> ------------------------------------------------------------------------
>> 
>> _______________________________________________
>> b1_ana mailing list
>> b1_ana at jlab.org
>> https://mailman.jlab.org/mailman/listinfo/b1_ana
> 
> 
> _______________________________________________
> b1_ana mailing list
> b1_ana at jlab.org
> https://mailman.jlab.org/mailman/listinfo/b1_ana

-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://mailman.jlab.org/pipermail/b1_ana/attachments/20130510/a15f8e56/attachment-0002.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: PR12-13-001_P.pdf
Type: application/pdf
Size: 1389173 bytes
Desc: not available
Url : https://mailman.jlab.org/pipermail/b1_ana/attachments/20130510/a15f8e56/attachment-0001.pdf 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://mailman.jlab.org/pipermail/b1_ana/attachments/20130510/a15f8e56/attachment-0003.html