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Light yield and field dependence measurement in PandaX-II dual-phase xenon detector

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arxiv 2111.01492 v2 pith:MWNTS47R submitted 2021-11-02 physics.ins-det hep-ex

Light yield and field dependence measurement in PandaX-II dual-phase xenon detector

classification physics.ins-det hep-ex
keywords detectorxenondual-phaseelectricenergyfieldlightyield
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The dual-phase xenon time projection chamber (TPC) is one of the most sensitive detector technology for dark matter direct search, where the energy deposition of incoming particle can be converted into photons and electrons through xenon excitation and ionization. The detector response to signal energy deposition varies significantly with the electric field in liquid xenon. We study the detector's light yield and its dependence on the electric field in the PandaX-II dual-phase detector containing 580~kg liquid xenon in the sensitive volume. From our measurements, the light yield at electric fields from 0~V/cm to 317~V/cm is obtained for energy depositions up to 236~keV.

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