Proportional electroluminescence (EL) in noble gases is used in two-phase detectors for dark matter searches to record (in the gas phase) the ionization signal induced by particle scattering in the liquid phase. The “standard” EL mechanism is considered to be due to noble gas excimer emission in the vacuum ultraviolet (VUV). In addition, there are two alternative mechanisms, producing light in the visible and near infrared (NIR) ranges. The first is due to bremsstrahlung of electrons scattered on neutral atoms (“neutral bremsstrahlung”, NBrS). The second, responsible for electron avalanche scintillation in the NIR at higher electric fields, is due to transitions between excited atomic states. In this work, we have for the first time demonstrated two alternative techniques of the optical readout of two-phase argon detectors, in the visible and NIR range, using a silicon photomultiplier matrix and electroluminescence due to either neutral bremsstrahlung or avalanche scintillation. The amplitude yield and position resolution were measured for these readout techniques, which allowed to assess the detection threshold for electron and nuclear recoils in two-phase argon detectors for dark matter searches. To the best of our knowledge, this is the first practical application of the NBrS effect in detection science.

Aalseth C.E., Abdelhakim S., Agnes P., Ajaj R., Albuquerque I.F.M., Alexander T., et al. (2021). SiPM-matrix readout of two-phase argon detectors using electroluminescence in the visible and near infrared range. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 81(2), 1-17 [10.1140/epjc/s10052-020-08801-2].

SiPM-matrix readout of two-phase argon detectors using electroluminescence in the visible and near infrared range

Alici A.;Arcelli S.;Carnesecchi F.;Cifarelli L.;Colocci M.;Rignanese L. P.;Scioli G.;
2021

Abstract

Proportional electroluminescence (EL) in noble gases is used in two-phase detectors for dark matter searches to record (in the gas phase) the ionization signal induced by particle scattering in the liquid phase. The “standard” EL mechanism is considered to be due to noble gas excimer emission in the vacuum ultraviolet (VUV). In addition, there are two alternative mechanisms, producing light in the visible and near infrared (NIR) ranges. The first is due to bremsstrahlung of electrons scattered on neutral atoms (“neutral bremsstrahlung”, NBrS). The second, responsible for electron avalanche scintillation in the NIR at higher electric fields, is due to transitions between excited atomic states. In this work, we have for the first time demonstrated two alternative techniques of the optical readout of two-phase argon detectors, in the visible and NIR range, using a silicon photomultiplier matrix and electroluminescence due to either neutral bremsstrahlung or avalanche scintillation. The amplitude yield and position resolution were measured for these readout techniques, which allowed to assess the detection threshold for electron and nuclear recoils in two-phase argon detectors for dark matter searches. To the best of our knowledge, this is the first practical application of the NBrS effect in detection science.
2021
Aalseth C.E., Abdelhakim S., Agnes P., Ajaj R., Albuquerque I.F.M., Alexander T., et al. (2021). SiPM-matrix readout of two-phase argon detectors using electroluminescence in the visible and near infrared range. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 81(2), 1-17 [10.1140/epjc/s10052-020-08801-2].
Aalseth C.E.; Abdelhakim S.; Agnes P.; Ajaj R.; Albuquerque I.F.M.; Alexander T.; Alici A.; Alton A.K.; Amaudruz P.; Ameli F.; Anstey J.; Antonioli P....espandi
File in questo prodotto:
File Dimensione Formato  
Aalseth2021_Article_SiPM-matrixReadoutOfTwo-phaseA.pdf

accesso aperto

Tipo: Versione (PDF) editoriale
Licenza: Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY)
Dimensione 1.84 MB
Formato Adobe PDF
1.84 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/847884
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 21
  • ???jsp.display-item.citation.isi??? 19
social impact