Electron Gun: Difference between revisions
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===Other Components=== | ===Other Components=== | ||
* Filament (Possible Choice)<br /> | * Filament (Possible Choice)<br /> | ||
** | ** [https://en.wikipedia.org/wiki/Tungsten Tungsten ](W) | ||
** | ** [https://en.wikipedia.org/wiki/Lanthanum_hexaboride Lanthanum Hexaboride](LaB6) | ||
** | ** [https://en.wikipedia.org/wiki/Cerium_hexaboride Cerium Hexaboride](CeB6) | ||
==Setup== | ==Setup== | ||
Revision as of 14:35, 29 January 2022
Creating an SEM was proven to be too difficult. The electron gun with a magnetic lens is a simplification of the project.
Idea
There are two parts to this project. The first would be to create the electron source which seems to be done with the use of a Lenard/Crookes tube [1]. Secondly, we would want to focus this electron beam into a spot with the use of a homemade magnetic lens (probably a solenoid of some form). We could perhaps perform a measurement of the focal length with respect to the magnetic field strength of the lens.
Team Members
Irvin Lim
Aliki Sofia Rotelli
Tan Chuan Jie
Lai Tian Hao
Equipments & Components
High Vacuum (HV) Components
- Roughing Pump
- Turbo Pump
- KF-25 Stainless Steel vacuum bellow (1 meter)
- CF-40 Stainless Steel Tee
- CF-40 Stainless Steel Cross
- CF-40 Stainless Steel Viewport
- CF-40 Stainless Steel High-voltage Dual Port Feedthroughs (x2)
- CF-40 Stainless Steel Multi-Pin Feedthrough, Double-Ended
- CF-40 to KF-25 Stainless Steel Flange Adapter
Electrical Components
- High Voltage Power Supply Unit (PSU) (up to 5kV)
- Current Controlled PSU
Beam Focusing Components
- Enzil Lens
- Pair parallel plates (x2)
Measurement Components
- RBD's 9103 USB Picoammeter, (Alternative: Multimeter)
- High Vacuum Digital Gauge
- Thermocouple
Other Components
- Filament (Possible Choice)
- Tungsten (W)
- Lanthanum Hexaboride(LaB6)
- Cerium Hexaboride(CeB6)