The event detection system in the NEXT-white detector

Raúl Esteve Bosch, José F. Toledo Alarcón, Vicente Herrero Bosch, Ander Simón Estévez, Francesc Monrabal Capilla, Vicente Álvarez Puerta, Javier Rodríguez Samaniego, Marc Querol Segura, Francisco Ballester Merelo

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


This article describes the event detection system of the NEXT-White detector, a 5 kg high pressure xenon TPC with electroluminescent amplification, located in the Laboratorio Subterráneo de Canfranc (LSC), Spain. The detector is based on a plane of photomultipliers (PMTs) for energy measurements and a silicon photomultiplier (SiPM) tracking plane for offline topological event filtering. The event detection system, based on the SRS-ATCA data acquisition system developed in the framework of the CERN RD51 collaboration, has been designed to detect multiple events based on online PMT signal energy measurements and a coincidence-detection algorithm. Implemented on FPGA, the system has been successfully running and evolving during NEXT-White operation. The event detection system brings some relevant and new functionalities in the field. A distributed double event processor has been implemented to detect simultaneously two different types of events thus allowing simultaneous calibration and physics runs. This special feature provides constant monitoring of the detector conditions, being especially relevant to the lifetime and geometrical map computations which are needed to correct high-energy physics events. Other features, like primary scintillation event rejection, or a double buffer associated with the type of event being searched, help reduce the unnecessary data throughput thus minimizing dead time and improving trigger efficiency.

Original languageEnglish
Article number673
Pages (from-to)1-19
Number of pages19
JournalSensors (Switzerland)
Issue number2
StatePublished - 2 Jan 2021


  • Data acquisition circuits
  • FPGA
  • Trigger concepts
  • Xenon TPC

ASJC Scopus subject areas

  • Analytical Chemistry
  • Information Systems
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Instrumentation
  • Electrical and Electronic Engineering


Dive into the research topics of 'The event detection system in the NEXT-white detector'. Together they form a unique fingerprint.

Cite this