Development of very-thick transparent GEMs with wavelength-shifting capability for noble element TPCs

Abstract

A new concept for the simultaneous detection of primary and secondary scintillation in time projection chambers is proposed. Its core element is a type of very-thick GEM structure supplied with transparent electrodes and machined from a polyethylene naphthalate plate, a natural wavelength-shifter. Such a device has good prospects for scalability and, by virtue of its genuine optical properties, it can improve on the light collection efficiency, energy threshold and resolution of conventional micropattern gas detectors. This, together with the intrinsic radiopurity of its constituting elements, offers advantages for noble gas and liquid based time projection chambers, used for dark matter searches and neutrino experiments. Production, optical and electrical characterization, and first measurements performed with the new device are reported.

accepted for publication in Eur. Phys. J. C

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Cited by in corpus (7)

• Neutral Bremsstrahlung emission in xenon unveiled
• Neutral bremsstrahlung electroluminescence in noble liquids
• R&D of Wavelength-Shifting Reflectors and Characterization of the Quantum Efficiency of Tetraphenyl Butadiene and Polyethylene Naphthalate in Liquid Argon
• The Thick Gas Electron Multiplier and its derivatives: physics, technologies and applications
• Novel electron and photon recording concepts in noble-liquid detectors
• FAT-GEMs: (Field Assisted) Transparent Gaseous-Electroluminescence Multipliers
• Cryogenic setup for the characterization of wavelength-shifting materials for noble element radiation detectors