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Low background Micromegas for PandaX-III high pressure TPC

Detector area: 194x194 mm² with 3 mm pitch
Low background: 11.98+1.68 uBq/cm² for ²³⁸U, 3.55+1.64 uBq/cm² for ²³²Th
Energy resolution: 13.6% (FWHM @5.9 keV) at 1 bar and 19% at 10 bars
Long term stability and high gain: ~10⁵ @1 bar or ~10⁴@10 bars

Low background Micromegas for PandaX-III high pressure TPC
Low background Micromegas for PandaX-III high pressure TPC

Low background Micromegas module and the readout plane of PandaX-III TPC

Nuclear and particle physics experiments study dual-end readout TPC

Active area: 200x200 mm² with 650 um strip pitch
High-density waveform digitization electronics: 1280 channels,40 MSPS
Double-layer field cage for uniform electric field

Nuclear and particle physics experiments study dual-end readout TPC
Nuclear and particle physics experiments study dual-end readout TPC

Micromegas detector and TPC system

High-count-rate low-pressure TPC readout double-layer grid detector

Double avalanche gaps: 750 500 um
Ge film anode with fast grounding
Gain: >10⁵@1 bar and >10⁴@100 mbar
Low IBF ratio: ~0.1%

High-count-rate low-pressure TPC readout double-layer grid detector
High-count-rate low-pressure TPC readout double-layer grid detector

Double-mesh Micromegas detector

Low material budget telescope for beam monitoring

Material budget: < 0.25% χ₀
Active area: 100x100 mm² with 400 um pitch
Spatial resolution: <100 um

Low material budget telescope for beam monitoring
Low material budget telescope for beam monitoring

The low material Micromegas and telescope system for particle beam