Module Code: VAC
Convenor: Gavin Bell
Duration: the module will run in 2019-20 in the second half of Term 1 with a 1.5 day hands-on component planned for early December after main university terms have finished.
Direct link to MPAGS Moodle page. Non-Warwick students will need to get a temporary Warwick IT Services account - contact Gavin Bell to do this.
Vacuum science underpins a lot of experimental physics. This module will provide training in basic vacuum techniques: vacuum system components, pumping, pressure measurement, and the underpinning theory. The course has two components: (1) online learning completed during the second half of term 1 and (2) a "hands-on" section taking 1.5 days based at Warwick. Non-Warwick students will be able to attend these days (either travelling or on a residential basis) and will be able to register for the module's Moodle page with their local email address.
Guided reading and video content with ongoing formative assessment. This will cover:
- The thermodynamic view of vacuum
- Pressure regimes (viscous / molecular flow, baked / unbaked systems)
- Pressure measurement (Pirani gauge, ion gauge, cold cathode gauge, etc.)
- Rough vacuum pumps (rotary, scroll, etc.)
- High vacuum pumps (turbo, ion, getter, diffusion, cryo)
- Vacuum system design
- Standard vacuum fittings
- Case study: Diamond Light Source
- How to wreck your vacuum
This will be based around a series of hands-on exercises to be done in small groups. The practical aspects will be emphasised and good vacuum practice discussed. For example:
- Build and test a low vacuum system using KF components
- Demonstrate the effects of pumping speed on equilibrium pressure
- Build and test a high vacuum system using KF and CF components
- Demonstrate the effects of outgassing and baking on ultimate pressure
- Simulate some vacuum disasters (in a controlled way!)
Completion of online, reflective practice journal for hands-on work