Rendering of the upgraded Xurich II TPC. The active liquid xenon (LXe) is contained within a PTFE cylinder and surrounded by copper field-shaping rings. A 2-in. PMT is placed in the liquid, and an array of 16 SiPMs is placed in the gaseous phase at the top. For the sake of visualisation, two field-shaping rings have been cut. Legend: 1 – PCB with preamplifier, 2 – SiPM array, 3 – Anode and gate mesh, 4 – Level meters, 5 – PTFE reflector wall, 6 – Weir for liquid level control, 7 – Copper field-shaping rings, 8 – Cathode, 9 – PMT
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