Why more cryogenics can't always buy happiness

ElectricAye

When dealing with very sensitive amplifying electronics, one must often worry about thermal effects creating noise on the system. One obvious way to reduce that noise is to cool off one's instruments as much as possible, and when one is poor like me and struggling to count photons with old cheap equipment, it's easy to lose oneself in flights of fantasy that involve prohibitively expensive cryogenic equipment, massive dewars and liquid helium bathing one's aging photomultiplier tubes until their noise counts go to zero...

But now this dude goes and pops my bubble:


www.physorg.com/pdf187421719.pdf

ctwardell

Yeah, but on the bright side you don't need to buy that really expensive equipment now. :-)

Very interesting stuff, will be cool, no pun intended, to eventually find out the reason for the effect.

zoopydogsit

Wow. That makes me sooo exited. The idea of the "ringing" effect really makes my mouth water. Very very interesting. Wonder if the ringing effect is dragged out further the colder they go, or speeds up in a warmer temperature. That may be an interesting indicator!

I wonder if anyone has tried a cube of electrically isolated sensors in close proximity over a long period of time to see if there are any correllations between the firing, just to isolate any external events. Maybe also trying differing alignments, isolation of variables using different materials etc. The problem sounds like serious fun to investigate. Who knows, maybe it's impurities in the cathode cascading something.... Fascinating to think about.

Thanks for sharing.

skylight

no i'm not going to say it.......oh alright then, that's COOL :cool: