[time-nuts] HP 5071A Electron Multiplier of Cesium Beam Tube

Don Latham djl at montana.com
Mon Sep 7 19:54:03 UTC 2009

Hi Magnus: I don't express myself well at all. I meant the meanness and
shortsighted technique of insuring the equipment would not run without the
magic poem. Unnecessary IMHO.
I thoroughly agree with all of you that refilling the tube is
unquestionably a waste of time.

Magnus Danielson
> Don Latham wrote:
>> yet another reason not to buy a CS clock. What kind of self-destructive
>> bs is this?
> The expensive kind.
> I recall a discussion about refilling cesium in tubes from another
> direction. I was suppriced that they did not understand how cesium
> contaminates the tube, how spectrometer and vacuum "pump" is
> contaminated etc. They where only discussing the addition of more
> cesium. Even my very rudimentary knowledge outweigth them, that suprised
> me.
> Pumping would reduce cesium spills at first magnet, which should be a
> significant improvement in lifetime. As the oven temperature is lowered
> to reduce stream of cesium, a lower average speed would be achieved,
> thus prodicing a longer interaction time which would improve
> performance. Alternatively better short-term stability could be achieved
> with the improved signal-to-noise.
> Cheers,
> Magnus
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Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
VOX 406-626-4304

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