[Frost] Material for deuteron runs

Bill Briscoe briscoe at gwu.edu
Tue May 25 01:16:44 EDT 2010


What material do we have for the deutero runs?

----- Original Message -----
From: Igor Strakovsky <igor at va.gwu.edu>
Date: Tuesday, May 25, 2010 12:53 am
Subject: Re: [Frost] Two cents worth
To: Michael Dugger <dugger at jlab.org>, Bill Briscoe <briscoe at gwu.edu>
Cc: frost at jlab.org

> Mike, it would be great if you can do that
> 
> See you tomorrow, sorry today, Igor
> 
> On Tue, 25 May 2010 00:04:11 -0400 (EDT), Michael Dugger 
> <dugger at jlab.org> 
> wrote:
> 
> > 
> > Yes: gamma n -> pi- p. Thanks for catching that :)
> > 
> > I think the best way to deal with this is to take this as an 
> extension of 
> > g9b. This means that the extension would be calibrated with the g9b 
> data. 
> > I don't think there is enough manpower to treat the extension as a 
> > separate running period with separate cooks and calibrations.
> > 
> > If we were to cook and calibrate the data as g9b data, I would like 
> to 
> > analyze the gamma n -> pi- p reaction. I am in good position to do this.
> > 
> > Any disagreements?
> > 
> > -Michael
> > 
> > On Mon, 24 May 2010, Bill Briscoe wrote:
> > 
> >> Hi Mike,
> >>
> >> I believe you mean gamma n -> pi- p. Yes, I believe that this is a 
> unique 
> >>opportunity that should not be lost. We should look for the best 
> physics to 
> >>get out of this in a short time. I agree with Barry that we should 
> not hunt 
> >>for peaks, but look where we are sure to see something. This might 
> lead to 
> >>the allocation of more time if that is possible.
> >>
> >> Bill
> >>
> >> ----- Original Message -----
> >> From: Michael Dugger <dugger at jlab.org>
> >> Date: Monday, May 24, 2010 11:07 pm
> >> Subject: [Frost] Two cents worth
> >> To: frost at jlab.org
> >>
> >>> Somewhat obvious stuff:
> >>> * Running FROST with a deuteron target for three weeks without having
> >>> to
> >>> go through the PAC is a unique opportunity.
> >>> * There is only enough time to run at one coherent edge energy.
> >>> * We have to figure out the best possible physics motivation to
> >>> determine
> >>> the edge energy to run at.
> >>> * At the lower energies we are almost guaranteed of getting a usable
> >>> signal for gamma p -> pi- p.
> >>>
> >>> An issue we need to address: Who is going to analyze the data? There
> >>> is a
> >>> real possibility that the person who does pi- p will be the only one
> >>> to
> >>> get any usable physics. Is that enough motivation for the effort of
> >>> all
> >>> involved?
> >>>
> >>> -Michael


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