Close
The calibration facilities provide: Low Energy Plasma (electron and ion) & Optical (wide ranging capability for low temperature optical/radiometric calibration).
The MSSL thermal vacuum test facility can also be configured as a low energy electron calibration chamber. The latter configuration is for sole use by MSSL projects. When configured for thermal vacuum tests the facility is available to other research groups and commercial establishments.
The system is housed in a cylindrical stainless steel vacuum chamber which is 1.1m long and 1.0m in diameter manufactured by Leybold. The chamber is pumped to pressures below 5x10-7听mBar by a combination of a rotary pump, a turbopump and a helium cryopump. The electron calibration facility is housed inside a grounded mu-metal shroud inside the chamber, enclosed at both ends. This ensures that the residual magnetic field inside the chamber is less than one-tenth of the Earth鈥檚 magnetic field, which results in an electron beam divergence of less than 1o听at 1keV. The mu-metal shroud is 0.7m long, 0.6m wide and ~0.6m in height.
听
Specifications
Dimensions:听1m diameter by 1.1m long.
Electron beam diameter:听110 mm
Electron beam energies:听30 eV to 20 KeV
Base vacuum pressure:听5 x 10-6听mBar.
Temperature range (shroud):听-40o听C to +80o听C.
Temperature range (platen):听-140o听C to +100o听C.
Temperature control:听Closed loop PID control, +0.5o听C -0.5o听C.
Temperature measurement:听4 wire 1/10 DIN PT100 sensors, 8 sensors total.
Temperature and pressure logging:听8 channel plus pressure logging, user set logging interval.
Electrical feedthroughs:听Various D-Sub connectors and high voltage connectors (contact us for more detail)
Status
Nominal, in use by ChaPS for TechDemoSat.