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John Curl's Blowtorch preamplifier part III
John Curl's Blowtorch preamplifier part III
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Old 2nd November 2018, 07:26 AM   #8991
Mark Whitney is offline Mark Whitney  Netherlands
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Takes me back to a Balzers CDI600, more than 10 meters long and had 5 turbopumps. Twice I melted a hole in a target with it. Easy to forget the amount energy that is involved during the process of sputtering.
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Old 2nd November 2018, 09:57 AM   #8992
billshurv is online now billshurv  United Kingdom
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John Curl's Blowtorch preamplifier part III
Howie: Not off topic at all as it reminds us how much technology goes into things we take for granted and expect to cost very little.
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Old 2nd November 2018, 11:42 AM   #8993
DF96 is offline DF96  England
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Quote:
Originally Posted by scott wurcer
Without particles/molecules what does degree of freedom mean?
Oscillation mode?

I take your point. Maybe 'fluid world' is so different that we cannot really imagine it. Perhaps at some deep level shot noise and thermal noise are connected, but one depends on charge carrier charge and the other depends on temperature and these two are not obviously connected.
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Old 2nd November 2018, 03:42 PM   #8994
hhoyt is offline hhoyt  United States
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John Curl's Blowtorch preamplifier part III
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Originally Posted by Mark Whitney View Post
Takes me back to a Balzers CDI600, more than 10 meters long and had 5 turbopumps. Twice I melted a hole in a target with it. Easy to forget the amount energy that is involved during the process of sputtering.
Hi Mark!

Were you involved in the optical disc industry? Those disc sputtering metalizers are wonders for sure...inputting tens of KW into that tiny toroidal plasma required those targets to be water cooled so they wouldn't melt down...and don't get me started on sputtering silicon for the partly reflective DVD-9 L0...

Cheers!
Howie
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Old 2nd November 2018, 03:57 PM   #8995
DPH is offline DPH  United States
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Interesting to read about sputtering techniques on your guys end of the spectrum versus the tools I'm used to working with. My background is in R&D for semiconductor devices. So, yeah, sputtering is pretty key for ALL kinds of electronics.
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Old 2nd November 2018, 04:03 PM   #8996
1audio is offline 1audio  United States
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John Curl's Blowtorch preamplifier part III
Since the issue has come up before here is an unusual opportunity to own a Quan-Tech semiconductor noise analyzer, latest generation. You have less than 8 hours to bid: Quan-Tech 5173 Semiconductor Noise Analyzer | eBay

Looks like you will need to fabricate a test fixture for it.
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Old 2nd November 2018, 04:14 PM   #8997
Mark Whitney is offline Mark Whitney  Netherlands
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Hi Howie, worked for ODME from 86 to 90. Then worked for several replicators until starting up my own plant in 98.
All gone now of course.
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Old 2nd November 2018, 05:04 PM   #8998
hhoyt is offline hhoyt  United States
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John Curl's Blowtorch preamplifier part III
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Hi Howie, worked for ODME from 86 to 90. Then worked for several replicators until starting up my own plant in 98.
All gone now of course.
Right! Did you know Tony Holden? He went from ODME to ODC sometime in the early 90s. We had ODC mastering...

Howie
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Old 2nd November 2018, 06:49 PM   #8999
myhrrhleine is offline myhrrhleine  Belize
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We just pull a vacuum on the liquid, it boils and cools. That's how we get to 1.8K.

But nothing gets to absolute zero. Millikelvin, yes, microkelvin maybe, absolute zero, no.

Hence my question.

jn
I have a friend who works with BEC
But still not down to absolute zero.
I was reading where MIT has got real close.
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Old 2nd November 2018, 06:57 PM   #9000
Mark Whitney is offline Mark Whitney  Netherlands
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Perhaps he worked at ODM. It was later acquired by ODME from Philips.
I did spend sometime in Oliphant, Commerce and Minomonie.

Not a fan of ODC mastering. Fuji had serious problems with theirs. They had to shutdown for almost a year to fix high jitter that I had discovered while working at one of their customers.
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Last edited by Mark Whitney; 2nd November 2018 at 07:08 PM.
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