English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We have been developing a high-pressure xenon gas time projection chamber(TPC) to search for neutrinoless double beta ($0\nu\beta\beta$) decay of$^{136}$Xe. The unique feature of this TPC is in the detection part ofionization electrons, called ELCC. ELCC is composed of multiple units, and oneunit covers 48.5 $\mathrm{cm}^2$. A 180 L size prototype detector with 12units, 672 channels, of ELCC was constructed and operated with 7.6 bar naturalxenon gas to evaluate the performance of the detector at around the Q value of$^{136}$Xe $0\nu\beta\beta$. The obtained FWHM energy resolution is (0.73 $\pm$0.11) % at 1836 keV. This corresponds to (0.60 $\pm$ 0.03) % to (0.70 $\pm$0.21) % of energy resolution at the Q value of $^{136}Xe$ $0\nu\beta\beta$.This result shows the scalability of the AXEL detector with ELCC whilemaintaining high energy resolution. Factors determining the energy resolutionwere quantitatively evaluated and the result indicates further improvement isfeasible. Reconstructed track images show distinctive structures at theendpoint of electron tracks, which will be an important feature to distinguish$0\nu\beta\beta$ signals from gamma-ray backgrounds.

High-pressure xenon gas time projection chamber with scalable design and its performance at around the Q value of $^{136}$Xe double-beta decay