[b1_ana] draft V3

[Oscar Rondon-Aramayo]

Hi Karl,

First, I can't open the pdf. It says it's damaged.

Next, I'm not leaning to going back to the difference of counts. I'm saying 
that
whether we present it as an Azz measurement or a b1 one, the only method is
the difference of counts. That is what Steve is saying too.

To move the proposal forward, I just suggest that we use the estimates of 
the drifts of the charge calibration and efficiency stability I mentioned in 
my previous e-mail: combined 0.4% to have an absolute error 1/2 of HERMES's 
at x = 0.45.

What we need to confirm from JP or Alexandre is if the BCM's are stable to 
~0.3% over a day. According to Dustin, JP claims 1% detector stability over 
90 days, so 0.1% in a day is OK.

I'll explain the issue of the difference of counts in a follow up message.

Cheers,

Oscar







On Sat, 4 May 2013 18:47:45 -0400
  Karl Slifer <karl.slifer at unh.edu> wrote:
> Hi All,
> 
> I've posted the updated draft at
> 
> https://dl.dropboxusercontent.com/u/59933793/tensor_b1_v03.pdf
> 
> There is some lagtime for implementation, but I think this reflects pretty
> well where our discussion was about 24 hours ago.  However, we still need:
> 
> -updated rates/kin plots from Ellie or Patricia and values for the table
> 
> -some consensus on how to address Steve's comments.
> 
> It seems we have three options with time running short.
> 
> 1) List all possible factors that drift with time and atleast sketch a plan
> to deal with them.
> 
> 2) go back to difference of counts.
> 
> 3) Cancel submission and work on this for next PAC.
> 
> I lean to the first, Oscar leans to the second.  I'd very much like to find
> some consensus on this.  Am I the only one still nerding it up in front of
> my computer on this beautiful spring day?
> 
> -Karl
> 
> PS : If anyone makes suggestions for changes I would very much appreciate
> that they be in a form that I can put into the document quickly.
> 
> ---
> Karl J. Slifer
> Assistant Professor
> University of New Hampshire
> Telephone : 603-722-0695