Search found 117 matches

by Michael Bretti
Thu May 17, 2018 3:26 am
Forum: Vacuum Technology (& FAQs)
Topic: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System
Replies: 58
Views: 31624

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

Bit of a sudden and unforeseen setback to the above plan. Upon completing the 80/20 table, I decided to open up one of the two hermetically sealed boxes that, when I received them along with the open diffusion pump, was told they were new, unopened pumps. The boxes were the same dimensional size and...
by Michael Bretti
Wed May 16, 2018 5:29 pm
Forum: Vacuum Technology (& FAQs)
Topic: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System
Replies: 58
Views: 31624

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

New update on the V4 System build. After additional planning and design, I have settled on a table I will be using for the system. Below is a CAD model of the proposed design: System V4 Dual Purpose Table Assembly - V4 Chamber.png The experimental table consists of a 2'x2'x3' structure made from 80/...
by Michael Bretti
Wed May 09, 2018 3:06 pm
Forum: Vacuum Technology (& FAQs)
Topic: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System
Replies: 58
Views: 31624

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

Richard Hull, Thank you for your advice. I also just finished reading that new PDF you posted on activation - really fantastic introductory paper on activation, I greatly enjoyed it and it was very helpful, especially the section at the end explaining different target materials for activation. I was...
by Michael Bretti
Tue May 08, 2018 6:02 pm
Forum: Vacuum Technology (& FAQs)
Topic: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System
Replies: 58
Views: 31624

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

Richard Hull, Yes, noise shielding is certainly a major issue with high peak-power pulsed systems. Fortunately I have directly worked with active shielding and noise suppression for electronics and instrumentation around these types of pulsers. It is a challenge, but I have dealt with it before very...
by Michael Bretti
Tue May 08, 2018 5:34 pm
Forum: Vacuum Technology (& FAQs)
Topic: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System
Replies: 58
Views: 31624

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

Dennis P Brown, Thank you for your compliment. While this system is certainly not the fanciest setup here, my goal is to utilize a simple and compact topology to create a fully engineered and modular test platform with precise control over every parameter within reason. It takes much longer and requ...
by Michael Bretti
Tue May 08, 2018 2:49 am
Forum: Vacuum Technology (& FAQs)
Topic: High Vacuum Engineering Design, Analysis, and Build of a Small-Scale Multipurpose System
Replies: 58
Views: 31624

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

After a couple of months of additional project documentation, CAD, thermal simulations, and just recently, advanced plasma simulations using TRIM, I have had the opportunity to work on some physical assembly. I started to assemble the main chamber and pipeline of the V4 system. An overview with a br...
by Michael Bretti
Sat May 05, 2018 10:26 pm
Forum: Advanced Technical Discussion Area
Topic: Simulation Data for Ion Interactions with Target Materials from Ion Beam and Plasma Systems
Replies: 8
Views: 3296

Re: Simulation Data for Ion Interactions with Target Materials from Ion Beam and Plasma Systems

A few additional things to note in terms of DC glow discharge cleaning based on other literature indirectly related to the above simulation study, while on the immediate general topic of vacuum system cleaning and preparation: 1.) Sputtering/surface cleaning can occur in two modes - physical and che...
by Michael Bretti
Sat May 05, 2018 10:21 pm
Forum: Advanced Technical Discussion Area
Topic: Simulation Data for Ion Interactions with Target Materials from Ion Beam and Plasma Systems
Replies: 8
Views: 3296

Re: Simulation Data for Ion Interactions with Target Materials from Ion Beam and Plasma Systems

After about a month of intensive work, I have finally completed the simulations and uploaded all of the data for the DC glow discharge plasma simulations using the advanced features of TRIM. The process has been very long and tedious, with many dozens of preliminary simulations and many hours of res...
by Michael Bretti
Thu Apr 19, 2018 4:00 pm
Forum: Advanced Technical Discussion Area
Topic: Simulation Data for Ion Interactions with Target Materials from Ion Beam and Plasma Systems
Replies: 8
Views: 3296

Re: Simulation Data for Ion Interactions with Target Materials from Ion Beam and Plasma Systems

A few updates on the simulation progress and previous posts. After a couple of weeks of playing around with various angular distributions and browsing literature on the subject, I finally found the appropriate general angular distributions for ion angles impinging on grounded walls in plasma reactor...
by Michael Bretti
Wed Apr 18, 2018 2:25 pm
Forum: Advanced Technical Discussion Area
Topic: Simulation Data for Ion Interactions with Target Materials from Ion Beam and Plasma Systems
Replies: 8
Views: 3296

Re: Simulation Data for Ion Interactions with Target Materials from Ion Beam and Plasma Systems

John, I finally found the results you did in SRIM for Steven Sesselmann. Very cool to see. SRIM is quite an amazingly powerful tool, and even more amazing that it is free. There are many textbooks even dating back to the 70s that refer to the use of SRIM and TRIM for sputtering and implantation simu...