Cryogenic Helium Buffer Gas
Cryostat
Cryogenic Sorb Fins
I designed and installed copper fins coated with ultra-pure charcoal to absorb excess helium and prevent buffer gas build-up in the cryostat.
Cryostat
Room Temp. Shield
I designed different panels for the room temperature shield of the 4K cryostat using SolidWorks. The panel shown includes a turbo immediately next to the beam-pipe aperture. This solved a pressure build up issue that was destroying the beam of molecules as they propagated toward the interaction region.
Variations in 4K Cell Design
I performed discrete monte - carlo hydrodynamic simulations with the DS2V simulation package. I machined cell prototypes to test the prediction of the simulations and maximize the molecular flux exiting the cryogenic cell. I measured the effects of variations in cell volume and exit aperture diameter.
Cryogenic Thermometers and Heaters
I built and installed cryogenic resistive heaters and diode thermometers to maintain a temperature optimal for molecular beam production. Thermometers were used to monitor the state of the cryogenic 4K cell, while the heaters could be used to rapidly heat the chamber up during maintenance procedures.