Date: Wed Apr 18 10:33:54 2007

Author: Dan Beeker

Subject: Re: Wanted: Tubes for old Sargent-Welch e/m apparatus

Post:
And if anyone has an old Sargent Welch tube they would like to get rid of, I
am looking for one. Doesn't have to be working.

Dan

Dan Beeker
Undergraduate Physics Lab Coordinator

Swain West 115
Physics Department, Indiana University
727 E. 3rd Street
Bloomington, IN 47405
Phone: (812) 855-5903
Fax (812) 855-5533
debeeker@indiana.edu

-----Original Message-----
From: tap-l-owner@lists.ncsu.edu [mailto:tap-l-owner@lists.ncsu.edu] On
Behalf Of J. Terrence Klopcic
Sent: Wednesday, April 18, 2007 10:25 AM
To: tap-l@lists.ncsu.edu
Subject: Re: [tap-l] Wanted: Tubes for old Sargent-Welch e/m apparatus


Chuck,

Thanks for not letting this topic die. Were some glassblower to take on the

task of rebuilding the derelict tubes that so many of us are holding, he/she

could set up for a surge, do a thousand or so, and keep us running for many
years - as well as keeping all those otherwise-valuable tubes out of
landfills.

I have a yellowing copy of "Instructions for Use of 0623B e/m Apparatus" by
the Sargent-Welch Scientific Company which gives a lot of information on the

large tube apparatus that I, and apparently several others, treasure. I
would be glad to make copies and send them to whomever.

Terry

J. Terrence Klopcic
Director of Laboratories
Departments of Physics and Mathematics
Kenyon College



----- Original Message -----
From: "Chuck Patten"
To:
Sent: Tuesday, April 17, 2007 10:23 AM
Subject: Re: [tap-l] Wanted: Tubes for old Sargent-Welch e/m apparatus


> Does anyone have any datasheets, hi-res pictures, info on the tubes?
> There
> seem to be two basic different physical types that the group is looking
> for.
> I am trying to find a source that would be willing to make new ones and or
> repair the ones needing new filaments. So far the info seems to indicate
> that they may be filled with two different gasses at different pressures,
> different electrode designs, etc.
>
> thanks,
> chuck...
>
>
>
>
> -----Original Message-----
> From: tap-l-owner@lists.ncsu.edu [mailto:tap-l-owner@lists.ncsu.edu]
> On Behalf Of Tim Cook
> Sent: Thursday, April 12, 2007 5:39 PM
> To: tap-l@lists.ncsu.edu
> Subject: Re: [tap-l] Wanted: Tubes for old Sargent-Welch e/m apparatus
>
> If you look at the Sargent Welch link below you'll see they are out of
> stock
> but will be available. We just received some after a lengthy wait.
> I always thought Electro Technique Products was the manufacturer. I'm
> skeptical that Tel-atomic was ever involved. If you order one, be sure to
> test it right away. Sometimes they are defective with dim beams, or the
> pin
> geometry is bad enough that you can't take data,
>
> http://www.sargentwelch.com/product.asp?pn=WL0623_EA&ss=wl0623
>
> You can see a picture of the tube on our web site, at
> http://pirt.asu.edu/detail_10.asp?ID=547 . I believe The description
> is in error in calling it Specific Charge of electron apparatus. We're
> trying to get time to change it to "charge to mass ratio of the
> electron apparatus"
>
>
> Tim Cook, Ariz. State
>
>
>
> -----Original Message-----
> From: tap-l-owner@lists.ncsu.edu [mailto:tap-l-owner@lists.ncsu.edu]
> On Behalf Of Scott Shelley
> Sent: Thursday, April 12, 2007 9:08 AM
> To: tap-l@lists.ncsu.edu
> Subject: Re: [tap-l] Wanted: Tubes for old Sargent-Welch e/m apparatus
>
>
>>I never quite got our conclusion:
>>Is it true that there is currently no source for either the new tubes
>>or for re-conditioning the old tubes?
>
> Here's the result from the research I've done:
>
> I called Sargent-Welch and spoke with the buyer for the tubes
> specified on page 773 of their 2006-2007 catalogue as: "Replacement
> Tube for Older Model of e/m apparatus", part number WL0623. Also
> mentioned is that these are replacement tubes for the WL0623B
> apparatus. (My apparatuses are WL0623A - does anyone know if this is
> different?)
>
> Sargent-Welch couldn't give me any information on these tubes (not a
> photo or even their diameter), so he had me call their supplier of
> this part, which happens to be Tel-Atomic.
>
> I spoke to a gentleman at Tel-Atomic who knew of the tubes I'm
> seeking,
> but
> assured me that they're no longer made (at least not by Tel-Atomic).
>
> Scott.
>
>
>
>





Back