Search found 117 matches

by Michael Bretti
Thu Oct 18, 2018 12:51 pm
Forum: Vacuum Technology (& FAQs)
Topic: Updated Diffusion Pump Assembly and Thermal Modeling
Replies: 3
Views: 3661

Re: Updated Diffusion Pump Assembly and Thermal Modeling

Jerry Biehler, Thanks for the link, I will definitely keep it in mind for future aluminum tooling plate. I will certainly need more for other designs and projects. I purchase my aluminum plates from https://www.midweststeelsupply.com/store/, and have already acquired the adapter plates for this desi...
by Michael Bretti
Tue Oct 16, 2018 2:56 am
Forum: Vacuum Technology (& FAQs)
Topic: Updated Diffusion Pump Assembly and Thermal Modeling
Replies: 3
Views: 3661

Re: Updated Diffusion Pump Assembly and Thermal Modeling

As mentioned in my above post, I have updated the thermal modeling of the new assembly to better understand how the system will behave thermally, and what to expect during operation for my closed-loop cooling system. A link to the project page is included below: http://appliedionsystems.com/portfoli...
by Michael Bretti
Tue Oct 16, 2018 2:40 am
Forum: Vacuum Technology (& FAQs)
Topic: Updated Diffusion Pump Assembly and Thermal Modeling
Replies: 3
Views: 3661

Updated Diffusion Pump Assembly and Thermal Modeling

I have been recently working on the new designs for my vacuum system to incorporate the large 8" baffle to the EO4 diffusion pump, as well as allowing for rapid chamber changes between my three experimental setups. Below is a CAD render of the diffusion pump and baffle assembly with the adapter plat...
by Michael Bretti
Tue Oct 16, 2018 2:21 am
Forum: Vacuum Technology (& FAQs)
Topic: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System
Replies: 58
Views: 31670

Re: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System

As of today, the Small Scale Multipurpose V4 system design is obsolete, and I have moved to the newest V5 version update. This update is to adapt the system to the newly designed high vacuum pumping assembly and utilize the highly modular design of my pumping station to its fullest. This update allo...
by Michael Bretti
Thu Sep 20, 2018 7:21 pm
Forum: Vacuum Technology (& FAQs)
Topic: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System
Replies: 58
Views: 31670

Re: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System

Another quick update on the project progress so far, and the scope going forward. The cooling system is about complete and almost ready for final testing, and is currently being integrated with the new control system I am working on. The control system hardware is being assembled, and is in the proc...
by Michael Bretti
Mon Aug 27, 2018 12:50 am
Forum: Vacuum Technology (& FAQs)
Topic: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System
Replies: 58
Views: 31670

Re: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System

New update on the cooling system build. I finally completed the first round of preliminary testing this week, and have analyzed the data and calculated all the major thermal parameters of the system. So far, it appears that it is performing grossly under spec - however, I have traced the problem bac...
by Michael Bretti
Tue Aug 14, 2018 2:52 am
Forum: Vacuum Technology (& FAQs)
Topic: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System
Replies: 58
Views: 31670

Re: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System

Full technical specifications, CAD files, cost analysis, build pictures, and a detailed overview comparison article between the iterations of the cooling systems are now available for the peltier-based chiller for diffusion pump cooling system: http://appliedionsystems.com/portfolio/closed-loop-pelt...
by Michael Bretti
Wed Aug 08, 2018 10:17 pm
Forum: Vacuum Technology (& FAQs)
Topic: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System
Replies: 58
Views: 31670

Re: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System

A big update on the vacuum efforts so far. The cooling system is finally assembled, mounted to the test table, and all of the cooling lines routed. It has been a challenging and demanding design and build process over the past couple of months. Now that it is assembled, the next phases of writing th...
by Michael Bretti
Sun Jul 15, 2018 8:12 pm
Forum: Vacuum Technology (& FAQs)
Topic: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System
Replies: 58
Views: 31670

Re: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System

Quick update on the cooling system build. Below is a picture of the V2 system so far: Cooling System Update - Front.jpg Cooling System Update - Back.jpg I currently have all of the hardware needed to complete the system, it is just a matter of finishing up some of the custom components. All brass ha...
by Michael Bretti
Sat Jun 23, 2018 5:18 am
Forum: Vacuum Technology (& FAQs)
Topic: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System
Replies: 58
Views: 31670

Re: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System

Another update on the cooling system. In my initial designs, I forgot a key parameter that has forced me to redesign the whole system from scratch. While mechanically and thermally the system was sound, chemically it was not. In my cooling loops, I had brass, copper, stainless, and aluminum. These m...