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Título: | The electronics of the energy plane of the NEXT-White detector |
Autor: | Álvarez Puerta, Vicente CSIC; Herrero Bosch, Vicente CSIC ORCID; Esteve, R.; Laing, Andrew CSIC; Rodríguez Samaniego, Javier CSIC; Querol, Marc; Monrabal, Francesc CSIC ORCID; Toledo, J.F.; Gómez Cadenas, Juan José CSIC ORCID | Palabras clave: | Calorimetry Front-end electronics Digital baseline restoration |
Fecha de publicación: | feb-2019 | Editor: | Elsevier | Citación: | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 917: 68- 76 (2019) | Resumen: | This paper describes the electronics of NEXT-White (NEW) detector PMT plane, a high pressure xenon TPC with electroluminescent amplification (HPXe-EL) currently operating at the Laboratorio Subterráneo de Canfranc (LSC) in Huesca, Spain. In NEXT-White the energy of the event is measured by a plane of photomultipliers (PMTs) located behind a transparent cathode. The PMTs are Hamamatsu R11410-10 chosen due to their low radioactivity. The electronics have been designed and implemented to fulfill strict requirements: an overall energy resolution below 1% and a radiopurity budget of 20 mBq unit in the chain of Bi. All the components and materials have been carefully screened to assure a low radioactivity level and at the same time meet the required front-end electronics specifications. In order to reduce low frequency noise effects and enhance detector safety a grounded cathode connection has been used for the PMTs. This implies an AC-coupled readout and baseline variations in the PMT signals. A detailed description of the electronics and a novel approach based on a digital baseline restoration to obtain a linear response and handle AC coupling effects is presented. The final PMT channel design has been characterized with linearity better than 0.4% and noise below 0.4mV. | Versión del editor: | http://dx.doi.org/10.1016/j.nima.2018.11.126 | URI: | http://hdl.handle.net/10261/208992 | DOI: | 10.1016/j.nima.2018.11.126 | Identificadores: | doi: 10.1016/j.nima.2018.11.126 issn: 0168-9002 |
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370_Alvarez_Electronics.pdf | 6,05 MB | Adobe PDF | Visualizar/Abrir |
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