Conveners
Session VII
- Gloria Luzón Marco (CAPA, Universidad de Zaragoza (ES))
The Liquid Argon Calorimeters are employed by ATLAS for precision electromagnetic calorimetry and for hadronic and forward calorimetry in the forward region. They also provide inputs to the first level of the ATLAS trigger system.
Since 2022, the LHC has restarted with the perspective of an increase of the instantaneous luminosity and pile-up of up to 80 interactions per bunch crossing. The...
Darkside-20k is a global direct dark matter search experiment situated underground at LNGS (Italy), designed to reach a total exposure of 200 tonne-years nearly free from instrumental backgrounds. The core of the detector is a dual-phase Time Projection Chamber (TPC) filled with 50 tonnes of low-radioactivity liquid argon.
The entire TPC wall is surrounded by a gadolinium-loaded...
We have developed a large area $(8 \times 9\,\mathrm{mm}^2)$ digital SiPM array with a high fill factor $(77\%)$ for light detection in rare event search experiments with liquid noble gases. Digital SiPMs combine SPADs and CMOS logic on the same silicon substrate so that the SPAD hits can be processed on-chip and the chip output signals are purely digital. This reduces power consumption and...
Detection of the vacuum ultraviolet (VUV) scintillation light produced by liquid noble elements will be of central importance to fully exploit the potential of future time projection chambers (TPCs) using these media. A novel technology recently proposed to detect VUV light is based on a windowless amorphous selenium photosensor. This device would open the door to the possibility of making an...
The presentation will focus on the challenges faced in detecting scintillation photons in liquid argon TPCs related to their short wavelength and the cryogenic temperatures (~87K) at which the sensors need to be effective. To enhance the photon detection efficiency (PDE) of the photon detectors it is common the use of wavelength shifters. This leads to the introduction of the studied sensors,...
In this talk, we present the progress on development of CMOS-based front-end application-specific integrated circuits (ASICs) for charge and light readout undertaken at Brookhaven National Laboratory. This design evolves from the LArASIC chip manufactured in 0.18 µm, that has been selected for charge readout in the liquid argon time protection chamber (LArTPC) in the phase I of DUNE. LArASIC...
The Q-Pix concept (arXiv: 1809.10213) is a continuously integrating low-power charge-sensitive amplifier (CSA) viewed by a Schmitt trigger. When the trigger threshold is met, the comparator initiates a ‘reset’ transition and returns the CSA circuitry to a stable baseline. This is the elementary Charge-Integrate / Reset (CIR) circuit. The instance of reset time is captured in a 32-bit clock...
