[3dem] Seeking advice on Lab6 filament life time
Cazey, Cornelia
cornelia.cazey at cssb-hamburg.de
Wed Oct 11 02:23:56 PDT 2023
Hi Mufeeda,
We have changed the Lab6 filament on our Talos L120c for the first time with 4350h on the clock (on ECO, 5µA only). It was barely hanging on by a thread. The current Lab6 filament has already 2400h of use as well, so at 830h, I would highly doubt this is normal (unless it's a faulty filament). What current do you run yours on? 5µA? or higher?
As far as I am aware, Lab6 lifetime is certified for at least 1000-1500h, so I would contact service and ask them to have a look at the gun, if this is not something you do yourself. On a Tungsten filament I had to adjust gun alignments and heat values several times throughout the lifetime of a filament. Lab6 is more stable, but can still shift a bit.
Good luck,
Cornelia
Cornelia Cazey (She/Her)
Cryo-EM Facility
Centre for Structural Systems Biology (CSSB)
c/o DESY, Building 15
Notkestr. 85
22607 Hamburg
Germany
phone: +49-(0)40-8998-87706
email: cornelia.cazey at cssb-hamburg.de
"If you don't know it's impossible, it's easier to do" -Neil Gaiman
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1. Seeking advice on Lab6 filament life time (Mufeeda C M)
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Message: 1
Date: Wed, 11 Oct 2023 14:19:14 +0800
From: Mufeeda C M <mufeeda.01 at gmail.com>
To: 3dem at ncmir.ucsd.edu
Subject: [3dem] Seeking advice on Lab6 filament life time
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<CAKb=L7Smn+E+fDO_vzR0jaVjJyo9J1-_Wt0StgOh8mURXQDgjQ at mail.gmail.com>
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Dear 3D EM members,
We have Talos L120C, recently we noticed that the beam is quite unstable
(it kind of started flickering). Filament readout shows 830+ hrs. Should we
replace the filament sooner?
Is there any disadvantage if we set the filament heating upto 50?
[image: image.png]
--
Thanks & Regards
Mufeeda Madathummal
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