INFN, in collaboration with FBK (Fondazione Bruno Kessler), is developing a novel type of Silicon Photomultiplier (SiPM) $-$ the Back-Side Illuminated (BSI) SiPM $-$ within the framework of the IBIS and IBIS_NEXT projects (Innovative Back-Side Illuminated SiPMs). This new sensor architecture introduces a clear separation between the charge collection and multiplication regions of the device,...
The search for sub-GeV dark matter requires novel experimental design due to the small expected ionization signal and large backgrounds, many of which still need to be modeled or calibrated. One way to unambiguously detect dark matter is to measure the directionality of the incoming particles so that the daily modulation of the rate can be used to confirm a dark matter signal. This can be...
Silicon photomultipliers (SiPMs) have had a transformative impact on experiments in high-energy physics and astrophysics. However, SiPMs face intrinsic limitations in their response to wavelengths below 300 nm, which is crucial for liquid noble scintillation detectors. In this study, we explore AlGaN and GaN semiconductors, which feature a tunable band gap and improved sensitivity in the...
We present an exploratory idea that allows effective fabrication of large-area amorphous selenium detectors with field shaping multiwell structure. Field shaping multi-well structures consists of well-regions produced by Frisch grids within the amorphous selenium vertical architecture. Such structures are usually produced using complex nanofabrication methods to create pillars on a substrate...
We present a novel UV photon detection method using ZnO/metal thin film architecture operated under surface plasmon resonance (SPR) conditions. Here, we couple a 633 nm probe light to the ZnO/metal thin film via the Kretschmann configuration to excite surface plasmons at the metal-dielectric interface. The reflectance of the probe light under SPR is utilized as the detection signal. The...
Amorphous selenium (a-Se) has become of high interest in detectors for high-
energy physics due to its versatility in application. It exhibits a number of ideal
properties, including a low threshold field for impact ionization (<70 Vฮผm), high
photoconversion efficiency over a broad range of frequencies, and the capability
for uniform large area fabrication. A-Se can be fabricated on a...
In this talk, I present a proposal for the next generation of fully packaged digital photodetectors based on a light-trapping mechanism called DELTA, Digital End-to-end Light Trap Assembly. The end-to-end development covers incident photons up to the digital signals saved to disk. Main topics of R&D for the DELTA detector include large-area photo-collectors that trap light inside, small-area...
High energy physics (HEP) experiments require high-performance detectors to advance the energy, luminosity, and cosmology frontiers. Photomultiplier tubes (PMTs) have been extensively used to detect scintillation light. In recent years, silicon photomultipliers (SiPMs), an array of single photon avalanche diodes (SPADs), have become preferable as a solid-state alternative to PMTs due to their...
Dichroic filters, filters that selectively transmit and reflect specific wavelengths while minimizing absorption, are increasingly employed in nuclear and particle physics for photon-detection, including in EOS for Cherenkov and scintillation light separation. In this talk, I will present transmission and reflection measurements of several dichroic filters over a range of angles of incidence...
The Deep Underground Neutrino Experiment (DUNE) is a long baseline neutrino oscillation experiment with a near and far detector complex located ~1300 km away from each other. DUNE is planned to have four far detectors modules to achieve its physics goals which includes the determination of neutrino mass hierarchy and the measurement of the CP-violating phase in neutrino oscillations.
During...
Microchannel Plates (MCPs) are utilized for applications ranging from image intensifier tubes and photomultiplier tubes to mass spectrometry and electron microscopy, offering ultra-fast timing and high gain. Conventional lead-glass MCPs have been the industry standard since the 1960s. The manufacturing process includes a hydrogen firing step to reduce the lead oxide surface in the pores,...
The Yellow Report for the EIC sets the stage for designing detectors that can best meet its science goals, noting the importance of having two complementary detectors and interaction regions. The first detector, ePIC at IP6, is already well into development, while new technologies could be refined for a second detector at IP8. In this talk, I will discuss the proposed research program, which...
Many neutrino detectors use photons as their primary event detection method, typically through photon counting and determining their arrival times. Photons also carry information about an event through their wavelength, polarization, and direction, but often little to none of this information is utilized. The "dichroicon," a Winston-style light concentrator comprised of dichroic filters,...
The CMS experiment at CERN is adding a new timing detector, the Barrel Timing Layer (BTL), as part of the Phase II upgrade of the detector in preparation for high luminosity running at the LHC. The detector is comprised of more than 160,000 LYSO crystals, each read out at both ends by a Silicon Photomultiplier (SiPM). Our group led the development of the BTL SiPMs and their packaging,...
The Deep Underground Neutrino Experiment (DUNE) is a next-generation long-baseline neutrino oscillation experiment in the US. It will have four liquid argon time projection chamber (LArTPC) far detector (FD) modules, each holding 17 kilotons of liquid argon. These modules sit 1,500 meters underground and 1,300 kilometers from the near detector complex. The Vertical Drift (VD) FD module, the...
The Deep Underground Neutrino Experiment (DUNE) aims to answer fundamental questions about neutrinos, including CP violation, mass hierarchy, and proton decay searches, and to observe neutrinos from supernova bursts. To support these goals, DUNE will implement Power-over-Fiber (PoF) technology to safely deliver power to its Far Detector Vertical Drift (FD-VD) photon detection system. This...
