Re: [BLAST_SHIFTS] Shift summary 09/04/2003 A (0-4)

From: Michael Kohl (kohlm@mit.edu)
Date: Thu Sep 04 2003 - 12:28:29 EDT


Hi Jason,

I have some questions and comments about your asym_v_time plot.

Looking at the most recent data point of the asymmetry in the asym_v_time
plot, I wonder why the combined left/right asymmetry is smaller than both
the left and right individual ones.

Moreover, from doubling the yields in combining left and right, I would
expect the statistical error to decrease by 40%, which seems not to be the
case in the plot.

Was the right-sector asymmetry really positive for the second bin?

Best regards,

   Michael

On Thu, 4 Sep 2003, Electronic Log Book wrote:

> Operators: chris2 seely vziskin
>
> smooth data taking for this half of shift except for one CODA crash. when we restarted CODA we got a failure upon trying to 'download'. went to the dtunnel and reset bot ROCs. things seemed to be ok after this.
>
> runs 2358-2362 crunching.
>
> new plot attached in the elog shows atomic fraction and left (blue), right (red), combined (green) asymmetries. this is basically the same as the plot submitted yesterday, but includes new data and is in 24 hour batches per data point instead of 12 hours. the error bars are a little better, but there's not really a clear correlation. the plot can also be found in ~/pro2003/analysis/macros/asym_v_time_2201-2355.eps
>
> js
>
>
>
>

-- 

+-------------------------------------+--------------------------+ | Office: | Home: | |-------------------------------------|--------------------------| | Dr. Michael Kohl | Michael Kohl | | Laboratory for Nuclear Science | 5 Ibbetson Street | | MIT-Bates Linear Accelerator Center | Somerville, MA 02143 | | Middleton, MA 01949 | U.S.A. | | U.S.A. | | | - - - - - - - - - - - - | - - - - - - - - -| | Email: kohlm@mit.edu | K.Michael.Kohl@gmx.de | | Work: +1-617-253-9207 | Home: +1-617-629-3147 | | Fax: +1-617-253-9599 | Mobile: +1-978-580-4190 | | http://blast.lns.mit.edu | | +-------------------------------------+--------------------------+



This archive was generated by hypermail 2.1.2 : Mon Feb 24 2014 - 14:07:29 EST