[b1_ana] Fwd: Systematic Errors

[O. A. Rondon]

Thank you Steve. I didn't think it could also refer to 12 GeV proposals.

Cheers,

Oscar

Stephen A. Wood wrote:
> 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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>>
>