Searching for the neutrinoless double beta decay (NLDBD) is now regarded as the topmost promising technique to explore the nature of neutrinos after the discovery of neutrino masses in oscillation experiments. PandaX-III (particle and astrophysical xenon experiment III) will search for the NLDBD of 136Xe at the China Jin Ping Underground Laboratory (CJPL). In the first phase of the experiment, a high pressure gas Time Projection Chamber (TPC) will contain 200 kg, 90% 136Xe enriched gas operated at 10 bar. Fine pitch micro-pattern gas detector (Microbulk Micromegas) will be used at both ends of the TPC for the charge readout with a cathode in the middle. Charge signals can be used to reconstruct the electron tracks of the NLDBD events and provide good energy and spatial resolution. The detector will be immersed in a large water tank to ensure ∼5 m of water shielding in all directions. Furthermore, the second phase, a ton-scale experiment, will consist of five TPCs in the same water tank, with improved energy resolution and better control over backgrounds.
@article{osti_2900764,
author = {Chen, Xun and Fu, ChangBo and Galan, Javier and Giboni, Karl and Giuliani, Franco and Gu, LingHui and Han, Ke and Ji, XiangDong and Lin, Heng and Liu, JiangLai and others},
title = {PandaX-III: Searching for neutrinoless double beta decay with high pressure <sup>136</sup>Xe gas time projection chambers},
annote = {Searching for the neutrinoless double beta decay (NLDBD) is now regarded as the topmost promising technique to explore the nature of neutrinos after the discovery of neutrino masses in oscillation experiments. PandaX-III (particle and astrophysical xenon experiment III) will search for the NLDBD of 136Xe at the China Jin Ping Underground Laboratory (CJPL). In the first phase of the experiment, a high pressure gas Time Projection Chamber (TPC) will contain 200 kg, 90% 136Xe enriched gas operated at 10 bar. Fine pitch micro-pattern gas detector (Microbulk Micromegas) will be used at both ends of the TPC for the charge readout with a cathode in the middle. Charge signals can be used to reconstruct the electron tracks of the NLDBD events and provide good energy and spatial resolution. The detector will be immersed in a large water tank to ensure ∼5 m of water shielding in all directions. Furthermore, the second phase, a ton-scale experiment, will consist of five TPCs in the same water tank, with improved energy resolution and better control over backgrounds.},
doi = {10.1007/s11433-017-9028-0},
url = {https://www.osti.gov/biblio/2900764},
journal = {Science China. Physics, Mechanics & Astronomy},
issn = {ISSN 1869-1927},
number = {6},
volume = {60},
place = {United States},
publisher = {Science China Press and Springer},
year = {2017},
month = {04}}
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