[Pi0tff] beam pipe

[Eugene Pasyuk]

Hello PRad,  X17, and TFF enthusiasts,

The beam pipe from the vacuum chamber window through the HyCal is a major source of the background. To try to reduce the background, this stainless steel pipe can be replaced with aluminum. We need to run stimulation to see if it's worthwhile. I attached the drawing of the pipe we used. The OD is 1.375", and the wall thickness is 0.049'.
The aluminum pipe may have the same OD of 1.375" and wall thickness of 0.035". So, it is not only lighter but also could be thinner. There will be one difference, though. We had bellows welded to the pipe. We will have to use epoxy for the aluminum pipe.


-Eugene




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