[Sneap] Duoplasmatron filaments

[Chris Westerfeldt]

Ovidiu, 
    Yes and no.  We have used Tungsten wire but I have no personal
experience with it. Perhaps Paul Carter can
respond.  We did however, recently try a ³Dispenser Cathode² made by
Heatwave labs (www.cathode.com).  These are supposed to provide prodigious
currents and last thousands of hours.  We ran it for a while in our
Duoplasmatron but it was removed while trouble shooting other problems and
has not been tried again.    Again, Paul can better comment on it¹s
performance.
This is the data on this cathode.
Model 101033 Directly Heated Dispenser Cathode

    

    * Ø1/2" Coil
    * 40A electron current CW
    * 60A pulsed electron current
    * Plasma applications
    * 7.5 turns, Type 31180
    * 1/4", 3/8", 1/2", 5/8", 3/4" and custom diameter coils available
    * See TB-186 for detailed specifications


Regards,
- 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: "Toader, Ovidiu" <ovidiu at umich.edu>
Reply-To: Symposium of Northeastern Accelerator Personnel
<sneap at tunl.duke.edu>
Date: Mon, 15 Oct 2007 15:25:40 -0400
To: <sneap at tunl.duke.edu>
Conversation: Duoplasmatron filaments
Subject: [Sneap] Duoplasmatron filaments

Greetings!
 
Does anybody have any experience in moving from a mesh to a tungsten wire
filament in a Duoplasmatron source?
 
Thanks,
 
Ovidiu Toader
University of Michigan
ovidiu at umich.edu
 
 
 


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