Courses
Basic course in technology of the vacuum
The aim of the course is to present this basic knowledge in a simple and accessible way. The principles and practice involved in vacuum generation and measurement are extensively covered with examples for various applications, with particular emphasis on high vacuum (HV) and ultra-high vacuum (UHV).
General information
- History and concept of "emptiness"
- Unit of measurement
- Low, Medium, High, Ultra
- Alto Vuoto (ISO 3529)
Mechanisms for generating a vacuum
- Generalità sulle pompe per vuoto
- Gas transfer pumps
- Low and medium vacuum pumps
- High/Ultra High Vacuum Pumps
- Considerations on pump selection (with discussion)
Misurazione del “vuoto”
- General information on total pressure gauges
- Direct and indirect sensors
- Sensors for partial pressure
- Considerazioni sula scelta dei sensori (con discussione)
Hardware
- Flange, Valvole, Raccorderia, Finestre, Passanti vari. Materials
Elements of calculation and dimensioning of systems
- Flows of gas, number of Knudsen, Viscous and molecular flows, throughput, speed of pumping and conductance
- Sources of gas in a chamber from a vacuum
- Degassing
- Pumping: time of emptying and pressure last