[b1_ana] Fwd: Systematic Errors

[Stephen A. Wood]

It is proposal PR12-13-001.  I have attached that page of the proposal. 
  As a co-spokesperson on that proposal, Patricia can use her discretion 
on whether to distribute the proposal.

Steve

On 05/10/2013 03:21 PM, O. A. Rondon 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
>>>
>>
>>
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