The NEXT experiment

The NEXT project is an international collaboration that looks for an hypothetical nuclear process called neutrinoless double-beta decay.

Learn more

Neutrinoless double beta decay

The NEXT collaboration is looking for the neutrinoless double beta decay of the Xe-136 isotope. Its discovery might help explain the source of the asymmetry between matter and antimatter in the universe.

High-pressure gaseous xenon TPC

The NEXT collaboration is leading the development of the high-pressure gaseous xenon time projection chamber technology.

Barium tagging

The NEXT collaboration is pioneering the detection of Ba++ ions in gaseous xenon, which are emitted by the decay of Xe-136.

News

  • The NEXT-100 Detector is Commissioned and Taking Data

    The NEXT-100 Detector is Commissioned and Taking Data

    The NEXT collaboration is pleased to announce the publication of a detailed article describing the design, construction, and commissioning of the NEXT-100 detector, now fully operational at the Laboratorio Subterrรกneo de Canfranc (LSC) since May 2024. This marks a major milestone in our ongoing program to search for neutrinoless double beta decay (0ฮฝฮฒฮฒ) in 136Xe…


  • NEXT at ICHEP 2024

    NEXT at ICHEP 2024

    The NEXT collaboration had a strong presence at the ICHEP 2024 conference in Prague, held from July 18 to 24, 2024. Brais Palmeiro from the University of Manchester delivered a talk summarizing the NEXT research program during the Neutrino Mass session. Three poster were also presented: Congratulations!


  • NEXT-100 assembly completed

    NEXT-100 assembly completed

    The assembly of the NEXT-100 detector is complete! Presently, the detector is working at low pressure to test and calibrate the instrumentation. NEXT-100 employs 60 photomultipliers in the energy plane, compared to the 12 PMTs used in its predecessor, NEXT-White. The tracking plane is made up of 3584 SiPMs (1792 in NEXT-White) meant to provide…