|front to back (Marshall, Lin & Guthrie) in SNAP cave|
Much of the beamtime was spent optimising the windows and collimation on the CCR tank but, eventually, count rates were achieved that were only 10% higher than without the tank. With further design work, it's likely that this can be improved.
|Marshall and Wu with inner CCR attachment on cold head|
The cell was found to cool rapidly to 53K and was stable. We were then able to pressurise the sample, but found this caused the temperature to increase to ~70K.
With input from Lin, clear design improvements to the cooling connections were conceived and sub 30K operation is likely in the future