Search found 143 matches

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: 57
Views: 14138

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
Sun Sep 09, 2018 12:03 am
Forum: The Trading Post
Topic: Michael Bretti - High Vacuum Surplus FOR SALE - September 2018
Replies: 1
Views: 414

Re: Michael Bretti - High Vacuum Surplus FOR SALE - September 2018

New pricing update for the above parts. Everything is still available, and see the description above for details: 1.) 2.75" Conflat Inline Pneumatic Valve - $80.00 2.) Nor-Cal 61-344778-00 90 Degree KF25 to Conflat 2.75" Pneumatic Valve - $45.00 3.) MDC 2.75" Conflat Manual Butterfly Isolation Valve...
by Michael Bretti
Wed Sep 05, 2018 9:09 pm
Forum: The Trading Post
Topic: OFHC copper tube 1/2"
Replies: 2
Views: 258

Re: OFHC copper tube 1/2"

Roberto, For OFC tubes, bars, and stock, I would suggest looking at Online Metals - https://www.onlinemetals.com/. They have C101 OFC for quite reasonably low costs, and I often order metals from them since they have such a large range of stock. For 1/2"OD tubing, they have several sizes with varyin...
by Michael Bretti
Sun Sep 02, 2018 7:25 pm
Forum: The Trading Post
Topic: Michael Bretti - High Vacuum Surplus FOR SALE - September 2018
Replies: 1
Views: 414

Michael Bretti - High Vacuum Surplus FOR SALE - September 2018

I have a new load of great high vacuum parts for sale. Some of these pains me to sell, but at the moment I will not be using them myself for the foreseeable future, and need to raise additional funds for my high priority high vacuum projects. Sales are first come, first serve. Prices are negotiable ...
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: 57
Views: 14138

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: 57
Views: 14138

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: 57
Views: 14138

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: 57
Views: 14138

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
Sun Jul 01, 2018 3:38 am
Forum: Please Introduce Yourself
Topic: Re-Introduction from Massachusetts
Replies: 1
Views: 668

Re: Re-Introduction from Massachusetts

Andrew, Welcome to the forums. I myself am originally from MA, currently residing in Upstate NY. While fusors are one of my favorite fusion neutron sources, along with the dense plasma focus and beam on target systems, at this point I personally have no intention in building a fusor myself (already ...
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: 57
Views: 14138

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...