[Sneap] tungsten mesh sought for gridded Einzel

[Kim Gunther]

Albert and Chris,

The stock Molybdenum mesh I mentioned earlier is actually the inventory
we bought from Buckbee Mears several years ago when they decided to get
out of the business.  We have various thicknesses and transparencies. 
 
Best regards,
 
Kim Gunther
HeatWave Labs
gunther at cathode.com
831-722-9081
fx 831-722-5491
 

-----Original Message-----
From: sneap-bounces at tunl.duke.edu [mailto:sneap-bounces at tunl.duke.edu]
On Behalf Of Chris Westerfeldt
Sent: Thursday, November 01, 2007 9:44 AM
To: Symposium of Northeastern Accelerator Personnel
Subject: Re: [Sneap] tungsten mesh sought for gridded Einzel

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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> Sneap mailing list
> Sneap at daytona.tunl.duke.edu
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