[3dem] Issues with FEG

[Sacha De Carlo]

Buy a newer microscope ?  :)

Try contacting HiTecSupport in Austria. They service microscopes that are
no longer under contract with the original equipment manufacturer:
https://www.hi-tec-support.com/en/

All the best and good luck!

Sacha

Sent from my mobile device
-----------------------------
Sacha De Carlo, Ph.D.
Business Development EM
Dectris.com

On 19 Jun 2018, at 02:17, Ric Aramayo <ric.aramayo at gmail.com> wrote:

Dear colleagues,

We are installing a CM200 FEG in our facility. However, we are having
issues with flash overs that are happening shortly (~24h) after reaching
the high tension of 200 kV. We have tried a few things to improve the
stability of the system: change the HT cable from the HT tank to the
microscope, cleaning the IGP2 pump or ramping up the HT slowly to 200 kV
with small voltage steps (< 0.2 kV).

Unfortunately, we are still experiencing those problems. The microscope has
been operating now for a couple of months at 160 kV now. Does anyone have a
suggestion of what we could try next?
Many thanks for any suggestion,
Ricardo.

------------------------------------------------------------
---------------------
Ricardo Aramayo
Imperial College London
Du Caine Road, W12 0NN London
United Kingdom



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