[Frost] About the issue of the Half-Wave-Plate

[Sungkyun Park]

Hi, Steffen.

I tried to  search the electronic log book to find out the exact condition of the half wave plate.
I have made the following web-page : 

   http://hadron.physics.fsu.edu/~skpark/research/research_jun1311.html

In the upper web, I put the most of comments about Half-Wave-Plate per run in the electronic log book.
There are the reference links on the run number. 

Steffen)  I am worry about the difference of the notation.
In your part of

   http://clasweb.jlab.org/rungroups/g9/wiki/index.php/Helicity_assignment_for_g9a

you use Half-Wave-Plate IN from run 55537 to run 55552. OUT in other run range.

By the log book,

   http://clasweb.jlab.org/clasonline/servlet/newloginfo?action=logentry&entryId=24196

" 1/2 Wave Plate Switched Out. Run 55537 started at 2:18. "

Why do you use Half-Wave-Plate IN from 55537 to 55552?
I am in very confusion because there are several versions of Half-Wave-Plate notation.
We need to get the official notation about this.

Brian) Now I have used your notation of the Overall Sign.
When you have decided the overall sign, do you consider the Half-Wave-Plate?

Best Wishes,

Sung
Florida State University
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