[Halld-tagger] Fwd: working group meeting at 11:30EDT

[Hovanes Egiyan]

HI,

I attached an Excel file from Steve Christo to this message. It contains
a list of the radiators that Hall B had. The cells are highlighted with 
color,
and the explanation for the color is at the bottom of the spreadsheets.
Some of the foils that are marked "we have" (we is Hall B) may not be 
available now.
We should have a look at this list and pick what we would like for Hall 
D amorphous
radiator, and then Steve will check the availability of those foils for us.

I think we could use 1.7e-05--Aluminum, 3.3e-04--Gold, 1.6e-03--Platinum.
3.3e-04--Gold will probably match the coherent peak intensity from 30um 
diamond
better than 1.0e-04--Gold.

Stepan from Hall B told me that they abandoned 10^-5 gold foil in favor 
of 10^-5
aluminum foil because having a micrometer or thinner foil in the target
holder was painful because of high probability of damaging it in the 
vacuum and
the difficulty of handling it.

Hovanes.




On 10/14/2013 08:29 AM, Richard Jones wrote:
> Photon Beam Working Group,
>
> Please remember our biweekly conference call that starts this morning 
> at 11:30EDT.  A draft agenda has been posted in the usual place on the 
> wiki, linked below.
>
> https://halldweb1.jlab.org/wiki/index.php/BLTWG_Meeting_10/14/2013
>
> -Richard J.
>
>
>
>
> _______________________________________________
> Halld-tagger mailing list
> Halld-tagger at jlab.org
> https://mailman.jlab.org/mailman/listinfo/halld-tagger

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