[d2n-analysis-talk] New version of Status Report

Brad Sawatzky brads at jlab.org
Wed Dec 8 16:32:14 EST 2010


Hi Diana,

Figure 9 caption, last sentence.  I would change the last bit to simply:
  ... shows makes use of the correction described by Equation 9.

Figure 12 caption.  (suggestion)
  The red line at 45deg highlights the ideal condition in which the
  reconstructed momentum and energy are equal.

P.9 second para, 2nd sentence:
  With the exception of PMTs 1 and 8, which are on the upper and lower
  edge of the acceptance, ...

P.9 second para, 3rd sentence:
  ... real [what does "real" mean here?]  three-photoelectron cut drop
  to as low as 50% for PMTs at the top and bottom of the acceptance on
  the high-rate, small-angle side.

P.9 second para, 4th sentence:
  ... real [what does "real" mean here?]  three-photoelectron cut ...

P.11 Figure 18 caption:  (suggestion)
  PMTs .... (at the bottom of the detector stack) were not included in
  the calculation because they predominantly outside our acceptance.


Pretty minor stuff.  Looks good!

-- Brad


On Tue, 07 Dec 2010, Diana Parno wrote:

> Hello all,
> 
> A new version of the status report is posted at
> 
> http://www.jlab.org/~dseymour/Parno_d2n_2010_v5.pdf
> 
> There are two major changes from last time:
> 
> 1. Since the BB Cerenkov section now uses results from the shower  
> calibration, I have moved the shower/preshower calibration section  
> before the Cerenkov. I didn't change the text of that section, just  
> its order.
> 
> 2. I've added a writeup of the BB Cerenkov preliminary pion rejection  
> factors and electron efficiencies, featuring 5 lovely new plots from  
> Matt. The new material starts on page 7, in the paragraph beginning  
> "To compute..." The new figures are Fig. 16-20. I'm currently the only  
> one who has read this section, so I'd be especially grateful for extra  
> pairs of eyes there.
> 
> I left in the figures and writeup for the comparison of Cerenkov ADC  
> spectra for accidentals with spectra for particles that could have  
> caused the trigger. It's not as exciting as the newer material, but I  
> thought it might still be of interest. If you think it's better  
> removed, I can certainly do that.
> 
> Guy has been pretty patient with this submission -- we were supposed  
> to have it to him last Wednesday. Speedy feedback would be especially  
> appreciated! (But I do understand that it is nearly 10 p.m. out there  
> on the East Coast...)
> 
> Best,
> Diana
> 
-- 
Brad Sawatzky, PhD <brads at jlab.org>  -<>-  Jefferson Lab / Hall C / C111
Ph: 757-269-5947  -<>-  Fax: 757-269-5235  -<>- Pager: brads-page at jlab.org
The most exciting phrase to hear in science, the one that heralds new
  discoveries, is not "Eureka!" but "That's funny..."   -- Isaac Asimov


More information about the d2n-analysis-talk mailing list