[Mott] weekly meetings and deadlines toward publication

Mon Mar 23 15:03:01 EDT 2015

Dear Joe et al.,

Glad to see that we are getting moving again on this great work.  I have one suggested modification to your schedule (shamefully to accommodate my absence - camping and hiking in Utah on April 10th).  That is to exchange your talk on the 10th with Marty's on the 24th.  I say this not because I'm not interested in what Marty is doing, but rather because I think there is a much better chance that I could contribute meaningfully to what you will report on than what Marty will report on (perhaps I'm wrong about this - I really want to hear all the discussions, and the above trip will have me miss Riad's talk as well).  For my part, I already have most of what I will talk about on May 1, and will have more by that date.

One question I would ask of Riad in particular, and the group in general - will we be in a position - electronics rate wise - to measure from carbon, as the theorists desire.  It would add measurably to the quality of our results if we could do it, and things like nuclear size and radiative corrections are a lot different for such a low Z and A.  If we can significantly increase the current we can handle, it should be possible, I think.  Should we decide on it, we'll have to procure some carbon foils.  If not C, what about Al?  I think there is quite a good chance we could do Al.  Food for thought.  Should we ask the theorists to weigh in about the desirability of doing either C or Al?  (I'm sure they would prefer C were it possible.)

Anyway, I'm sorry to miss two talks because of my irresponsible lifestyle.  My sincere regrets to the two offended speakers.

Best,
Charlie
________________________________________
From: mott-bounces at jlab.org <mott-bounces at jlab.org> on behalf of Joseph Grames <grames at jlab.org>
Sent: Monday, March 23, 2015 11:55 AM
To: mott at jlab.org
Subject: [Mott] weekly meetings and deadlines toward publication

Folks,

I haven't done a great job keeping us on track last ~month+, so in spite of being pre-occupied I'm going to set some deadlines below with the idea that biting off ~one item per week establishes some closure on action items before Memorial Day.  Specifically, we'll be able to evaluate by that time whether Run1 was sufficient for publication and agree if/how a Run2 proceeds in July or August.

If there are conflicts let me know and I'll shuffle, but here are deadlines I propose and suggested talking points; please improve upon as you see fit:

March 27, Marcy - Target thickness
* summary of prior + new thickness measurements, compared to Lebow quote
* compare target thickness extrapolation:  Lebow vs. foils measured so far
* how different is the 1um value from Run1 compare w/ our historical 1um (40.04%)

April 3, Riad - DAQ speed and Run2 estimates
* summary of FADC development for faster performance
* remaining challenges & plans
* estimate Run2 (3,5,8 MeV) w/ Run1 foils for worst and likely best cases

April 10, Joe - Run1 spectra analysis
* selection of timing and energy cuts to Run1 foils
* Run1 asymmetry results using proposed cuts

April 17, no meeting I'm on travel

April 24, Marty - Simulation of Run1 asymmetries
* Choose some strategy for allowing single- and double- elastic scattering
* Compare energy spectra vs. Run1 spectra, comment on simulation dependencies, e.g. energy spread
* Compute simulated analyzing power & compare to measured Run1 asymmetries (differ by P_beam)

May 1, Charlie
* Mott paper outline: imagine all-inclusive pub that could be parred down depending on journal
* History, challenges, polarimeter, DAQ, performance, theory, simulation, measurements, experiment
* Dole out writing responsibilities; imagine list of desired figures and plots

May 8, Marcy - Final Run1 thickness
* Summary report for all Run1 foils
* Plot of asymmetry (should be final by then) vs. Run1 thickness measured

May 15, All - Evaluate End Game
* Status updates all-around
* Run1 final status
* What does a Run2 give us and require (measurement, analysis, theory, simulation)

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