[Sneap] tungsten mesh sought for gridded Einzel

[Chris Westerfeldt]

Albert,
    I have purchased etched mesh in the past from a company called Buckbee
Mears.  They were bought out several years ago - here is a link to the
new website: http://www.internetmesh.net/metal_electro.htm

In our FN, the HVEE/Dowlish tube #1 has a gridded lens which is specified as
50 mesh x 0.0008 Tungsten Grid.  As I recall, we ordered a spare grid from
Unique Wire Weaving: http://www.uniquewire.com/index.cfm

- Chris
-- 

Chris R. Westerfeldt
Research Scientist / T.U.N.L. Radiation Safety Manager
Duke University Physics Department &
Triangle Universities Nuclear Laboratory
Science Drive, Box 90308
Durham, NC  27708-0308
Tel: (919) 660-2600
Fax: (919) 660-2634
Email: Cwest at Tunl.Duke.Edu


> From: Albert Zondervan <A.Zondervan at gns.cri.nz>
> Reply-To: Symposium of Northeastern Accelerator Personnel
> <sneap at tunl.duke.edu>
> Date: Thu, 1 Nov 2007 11:58:02 +1300
> To: <Sneap at tunl.duke.edu>
> Subject: [Sneap] tungsten mesh sought for gridded einzel
> 
> Hi SNEAPers
> 
>>> Where do I source electroformed tungsten mesh ?
> I am servicing a gridded Einzel lens and its tungsten, 1mm pitch, grid has
> deteriorated somewhat. I think the existing grid was custom-made a long
> time ago by an american company, via electroforming. Obviously,
> light-optical transmission should be >=90%. Minimum required area 100x100
> mm2.
> 
> Your suggestions and comments most welcome. If you have some spare on
> hand, I'll be happy to pay costs.
> 
> cheers
> Albert
> -- 
> Albert Zondervan
> National Isotope Centre
> GNS Science                              A.Zondervan at gns.cri.nz
> PO Box 31-312, Lower Hutt                ph: +64 4 570-4617
> New Zealand                              fx: +64 4 570-4657
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