[time-nuts] Heating or Cooling an LPRO (was Re: chip scale atomic clock)

[Bob Camp]

Hi

As I recall there are "good reasons" for the temperatures that the physics package gets stabilized to. Something about the C-field and the temperature combining to improve the state selection. 

Of course we have made it to the eiswein, so that may be a bit off...

Bob


On Dec 31, 2009, at 4:37 PM, Magnus Danielson wrote:

> Bob Camp wrote:
>> Hi
>> If you separate the the electronics from the physics package then you will need to think pretty hard about magnetic shielding. 
> 
> The physical package is what needs to sit inside the my-metal.
> 
>> It is clear though that if you are going to run an LPRO off of batteries, you want to let it warm up. The energy savings likely outweigh the loss of reliability. The reliability penalty is real. I have indeed "cooked" rubidiums. In each case it was not the heater circuits or the lamp that failed. 
> 
> The important thing for the exercise is to stabilize temperature. To what temperature is a matter of choise.
> 
> Cheers,
> Magnus
> 
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