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301-975-8187 |
meredith.metzler at nist.gov<mailto:meredith.metzler at nist.gov> |
https://www.nist.gov/cnst |
From: Timothy Fuller <tafuller at eng.ucsd.edu> |
Sent: Wednesday, March 1, 2023 11:44 AM |
To: johnboyle <johnboyle at fast.net> |
Cc: Collins, Deon <deonc69 at illinois.edu>; Metzler, Meredith G. (Fed) <meredith.metzler at nist.gov>; labnetwork at mtl.mit.edu |
Subject: Re: [labnetwork] Cryo-piping contractors for LN2 piping sought |
When I worked at HRL our original installation had KF 25 Buna-N o-rings for the vacuum jacket. After replacing them with Viton o-rings, the vacuum jacket was leak tight. |
On Wed, Mar 1, 2023 at 4:45?AM johnboyle <johnboyle at fast.net<mailto:johnboyle at fast.net>> wrote: |
Check Acme Cryogenics, Allentown, PA. They make VIP, phase separators, do installation and repairs. Ask for Field Services |
John Boyle |
Sent from my Verizon, Samsung Galaxy smartphone |
-------- Original message -------- |
From: "Collins, Deon" <deonc69 at illinois.edu<mailto:deonc69 at illinois.edu>> |
Date: 2/28/23 7:46 PM (GMT-05:00) |
To: "Metzler, Meredith G. (Fed)" <meredith.metzler at nist.gov<mailto:meredith.metzler at nist.gov>>, labnetwork at mtl.mit.edu<mailto:labnetwork at mtl.mit.edu> |
Subject: Re: [labnetwork] Cryo-piping contractors for LN2 piping sought |
Your vacuum jacket has failed. We are going through the same situation with our static LN2 delivery lines. |
Is your phase separator a Static or Dynamic system? |
From: labnetwork <labnetwork-bounces at mtl.mit.edu<mailto:labnetwork-bounces at mtl.mit.edu>> On Behalf Of Metzler, Meredith G. (Fed) |
Sent: Tuesday, February 28, 2023 2:08 PM |
To: labnetwork at mtl.mit.edu<mailto:labnetwork at mtl.mit.edu> |
Subject: [labnetwork] Cryo-piping contractors for LN2 piping sought |
We are hoping the community can assist us in identifying a vendor who can inspect an existing LN2 delivery piping system in the cleanroom for our cryo-etch tools. We've recently started experiencing issues with a phase separator that keeps building up a large block of ice on the outside of it. |
We have a 5 Gallon phase separator made by Chart Inc. with one outlet. It feeds liquid nitrogen to several tools in the etch bay of the cleanroom. The LN2 system is house regulated to 40 PSI at the inlet. The unit separates the gaseous N2 from the liquid. The liquid is stored in the 5 gallon volume surrounded by a vacuum jacket to prevent icing. The final LN2 inlet connection to the phase separator, the exhaust connection, and the over pressure relief connection seem to be the biggest points of failure. At these three points we have cold air and moisture condensation that forms an ice ball. |
Although, we have made many at wrapping and insulating these connection points, we cannot quite get the coverage to eliminate this ice ball. |
Does the community have any preferred cryo-piping contractors they can recommend to assist with solving this issue and any of our future cryo-piping needs? |
Thanks! |
Meredith Metzler |
National Institute of Standards and Technology, Physical Measurement Laboratory |
Process Engineer ? Center for Nanoscale Science and Technology Facility, NanoFab |
100 Bureau Drive, Mail Stop 6201, Building 216 |
Gaithersburg, MD 20899 |
301-975-8187 |
meredith.metzler at nist.gov<mailto:meredith.metzler at nist.gov> |
https://www.nist.gov/cnst<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Furldefense.com%2Fv3%2F__https%3A%2Fwww.nist.gov%2Fcnst__%3B!!DZ3fjg!-6Lfwk5cCgFK0WcjbkRqEZm2A8T7loqa2OV_9x-WW72ajmC1A4euSzW2VyRMpj0J8yR1_DdWvG0axt3nRQj-R1EmQJ2lypVZ%24&data=05%7C01%7Cmeredith.metzler%40nist.gov%7Cf95391a790e34259dfc408db1a74248c%7C2ab5d82fd8fa4797a93e054655c61dec%7C1%7C0%7C638132858369919538%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=FpntaUfl0pARpQK82TN%2F36q6F7PRiT635RFPG5rlBxM%3D&reserved=0> |
_______________________________________________ |
labnetwork mailing list |
labnetwork at mtl.mit.edu<mailto:labnetwork at mtl.mit.edu> |
https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmtl.mit.edu%2Fmailman%2Flistinfo.cgi%2Flabnetwork&data=05%7C01%7Cmeredith.metzler%40nist.gov%7Cf95391a790e34259dfc408db1a74248c%7C2ab5d82fd8fa4797a93e054655c61dec%7C1%7C0%7C638132858369919538%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=jY7yi1EGrLw%2FLeum9rmIqWagunkIebrtrNsdJIaxNB0%3D&reserved=0> |
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From sbjones at uw.edu Wed Mar 8 12:20:19 2023 |
From: sbjones at uw.edu (Sarice Jones) |
Date: Wed, 8 Mar 2023 09:20:19 -0800 |
Subject: [labnetwork] Strasbaugh 7AA Grinder failure advice |
Message-ID: <CAP9r4frGYSkp9nVnLdrJ7i5GS4-5koe1aoPsNnRX9wCexZWuaw@mail.gmail.com> |
Dear Lab Network, particularly members who've had to coax 80s tools back to |
life, |
At the University of Washington's WNF, we have a Strasbaugh 7AA grinder via |
Axus that is failing. The wafer thickness measurement, which gates |
initializing and processing, has been corrupted (we believe somewhere in |
the G&L board cage, the signal is accurate up to there) and the tool can't |
proceed. |
Specifics on the behavior we're seeing: |
- 0 measurement brings back 6560 microns |
- thickness measurements are nonlinearly subtracted rather than added to |
this: e.g. expected measurement of 600 brings back 5460 |
- bottoms out at about 2640 |
Getting replacement boards is going slowly and we're interested in a |
workaround that's preferably a step above manual mode. Is anyone familiar |
with the Strasbaugh 7AA or similar tools who has advice? Some of our ideas |
include: |
- Reset EPROM board/chips |
- Force the tool to accept an initialization sequence (wafer thickness can |
be backfilled as long as the initialization is accepted) |
- Get into the ladder logic of the tool |
Any advice or experience is much appreciated. Regards, |
Sarice |
-- |
Sarice B. Jones |
Facilities Engineer, Washington Nanofabrication Facility (WNF) |
University of Washington, Fluke Hall 115 |
(206) 685-7757 |
sbjones at uw.edu |
http://www.wnf.washington.edu/ |
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From lopezg at seas.upenn.edu Thu Mar 9 08:31:52 2023 |
From: lopezg at seas.upenn.edu (Gerald Lopez) |
Date: Thu, 9 Mar 2023 08:31:52 -0500 |
Subject: [labnetwork] JOB OPPORTUNITY: Electron Microscopy Trainer and |
Support Specialist at UPenn Singh Center |
Message-ID: <CAERBAG-RbXxKSe3eysxd36zNDTEpEa0ZuQDscrcoU6bQX5OWmg@mail.gmail.com> |
Dear Colleagues: |
We've created a new position |
<https://wd1.myworkdaysite.com/en-US/recruiting/upenn/careers-at-penn/details/Electron-Microscopy-Trainer-and-Support-Specialist---Nanoscale-Characterization-Facility---Penn-Engineering_JR00068909?q=Singh%20Center> |
to assist with our electron microscopy training and support at the Singh |
Center for Nanotechnology <http://nano.upenn.edu/> Nanoscale |
Characterization Facility. If you are interested in working at a |
state-of-the-art facility, you can apply |
<https://wd1.myworkdaysite.com/en-US/recruiting/upenn/careers-at-penn/details/Electron-Microscopy-Trainer-and-Support-Specialist---Nanoscale-Characterization-Facility---Penn-Engineering_JR00068909?q=Singh%20Center> |
using the link below. |
We're hiring: *Electron Microscopy Trainer and Support Specialist* - |
Nanoscale Characterization Facility at the *University of Pennsylvania* |
Singh Center for Nanotechnology |
https://wd1.myworkdaysite.com/en-US/recruiting/upenn/careers-at-penn/details/Electron-Microscopy-Trainer-and-Support-Specialist---Nanoscale-Characterization-Facility---Penn-Engineering_JR00068909?q=Singh%20Center |
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