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The goal is to couple the lens onto the PMT face with oil
Seal around the edge of the PMT face to the PMT housing window that is on top of the PMT photocathode, so that oil can not leak into the body of the PMT, with 5 min epoxy - . Be careful not to soil the plate above the photocathode photocathode.
Add 30 - 50 ul of high viscosity microscope immersion oil.
Place condensor lens on oil–touch to oil on one side first so as not to trap large bubble underneath. Make sure there are no bubbles and carefully remove overflow oil from the housing.
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Add PMTMountPlate before Kwik-Sil sets, such that sealant squishes between the lens and PMTMountPlate. Be sure that lens Hold lens down so that it does not move up while mount plate is being pushed down. Attach PMTMountPlate to PMT with two M3 screws.
Allow ~30 minutes at least for Kwik-Sil to set (oil mixing with Kwik-Sil will interfere with the setting process).
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