The Event Detection System in the NEXT-White Detector

Esteve Bosch, Raúl (ORCID:0000000212896938); Toledo Alarcón, José F.; Herrero Bosch, Vicente (ORCID:0000000308602789); Simón Estévez, Ander; Monrabal Capilla, Francesc (ORCID:0000000240475620); Álvarez Puerta, Vicente; Rodríguez Samaniego, Javier; Querol Segura, Marc; Ballester Merelo, Francisco (ORCID:0000000224645116)

doi:10.3390/s21020673

DOE OSTI · 1761244

The Event Detection System in the NEXT-White Detector

Esteve Bosch, Raúl (ORCID:0000000212896938)·Toledo Alarcón, José F.·Herrero Bosch, Vicente (ORCID:0000000308602789)·Simón Estévez, Ander·Monrabal Capilla, Francesc (ORCID:0000000240475620)·Álvarez Puerta, Vicente·Rodríguez Samaniego, Javier·Querol Segura, Marc·Ballester Merelo, Francisco (ORCID:0000000224645116)

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Abstract

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.

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY 42 ENGINEERING 47 OTHER INSTRUMENTATION Chemistry Engineering FPGA Instruments & Instrumentation data acquisition circuits trigger concepts xenon TPC

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Esteve Bosch, Raúl (ORCID:0000000212896938), Toledo Alarcón, José F., Herrero Bosch, Vicente (ORCID:0000000308602789), Simón Estévez, Ander, Monrabal Capilla, Francesc (ORCID:0000000240475620), Álvarez Puerta, Vicente, Rodríguez Samaniego, Javier, Querol Segura, Marc, Ballester Merelo, Francisco (ORCID:0000000224645116). 2021-01-19. The Event Detection System in the NEXT-White Detector. https://doi.org/10.3390/s21020673

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