[d2n-analysis-talk] Multi-Carbon Target With Transversity's Matrix Elements

[Diana Parno]

Yes, A1235 is the survey report you want, Dave. There wasn't much survey 
activity immediately before d2n -- just some target info and the BigBite 
spectrometer (before and after it was moved from 30 degrees to 45 
degrees). I don't see much immediately before Transversity, either. It 
seems to me as though both experiments rely on the March measurement 
reported in A1235.

Diana

On Wed, 28 Apr 2010, Brad Sawatzky wrote:

> All the data are there, the report was just published late.  I think
> Diana was looking into this a while ago -- check in with her.
>
> -- Brad
>
> On Wed, 28 Apr 2010, David Flay wrote:
>
>> On Wed, Apr 28, 2010 at 10:43 AM, Brad Sawatzky <brads at jlab.org> wrote:
>>
>>>  I presume the LHRS angle was set to 45 degrees?  Are the survey data on
>>> the LHRS incorported into our DB?
>>>
>>
>> Yes, the LHRS was set to 44.985 deg.:
>> http://hallaweb.jlab.org/news/minutes/Survey_Reports/DT_A1235.pdf
>>
>> I found this page for survey reports:
>> http://hallaweb.jlab.org/news/minutes/Survey_Reports/Survey_Reports.html
>>
>> I was thinking that the information we need is from the reports from 8/3/09
>> (Spectrometer Pointing -- has entries from March -- August), 2/6/09 (Target
>> Ladder entry).  Do you remember the most recent survey report <just before>
>> d2n?  From looking at this page, it seems I need to look at a few different
>> ones to gather the proper information.
>>
>> I was just talking with Jin concerning an offset with phi.  He suggested to
>> look at Hydrogen elastic runs and see where the elastic peak falls.  Then to
>> manually adjust the 0th matrix element for phi.  He mentioned I could try
>> with dp as well, but it may be best to play with phi first.
>>
>> As for the offsets (Dx,Dy) referring to the offset of the central ray from
>> the center of the HCS, I'm starting to work on that -- they should go in the
>> db_run.dat file.
>>
>> Dave
>>
> -- 
> 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
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