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The Event Detection System in the NEXT-White Detector.

Raúl Esteve Bosch1, José F Toledo Alarcón1, Vicente Herrero Bosch1

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Summary

The NEXT-White detector utilizes a novel event detection system for enhanced xenon TPC operation. This system enables simultaneous calibration and physics runs, improving data quality for high-energy physics research.

Keywords:
FPGAdata acquisition circuitstrigger conceptsxenon TPC

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Area of Science:

  • Nuclear Physics
  • Particle Detectors
  • High Energy Physics

Background:

  • The NEXT-White detector is a 5 kg high-pressure xenon time projection chamber (TPC) utilizing electroluminescent amplification.
  • It features photomultiplier tubes (PMTs) for energy measurements and a silicon photomultiplier (SiPM) plane for event filtering.

Purpose of the Study:

  • To describe the event detection system of the NEXT-White detector.
  • To highlight novel functionalities for improved detector operation and data acquisition.

Main Methods:

  • The system employs the SRS-ATCA data acquisition system and is implemented on FPGA.
  • It utilizes online PMT signal energy measurements and a coincidence-detection algorithm.
  • A distributed double event processor allows simultaneous detection of two event types.

Main Results:

  • The system successfully detects multiple events and has been operational during NEXT-White runs.
  • Simultaneous calibration and physics runs are enabled, providing constant detector monitoring.
  • Features like primary scintillation event rejection and double buffering reduce data throughput and dead time.

Conclusions:

  • The developed event detection system offers significant advancements for xenon TPC operation.
  • Its novel functionalities enhance detector monitoring, data quality, and trigger efficiency.
  • This system is crucial for accurate high-energy physics event corrections and analysis.