Conveners
Plenary Session
- Ezio Torassa (Istituto Nazionale di Fisica Nucleare)
Plenary Session
- Roberta Cardinale (Istituto Nazionale di Fisica Nucleare)
Plenary Session
- There are no conveners in this block
Plenary Session
- Peter Fischer (Heidelberg University)
Plenary Session
- Rok Pestotnik
Plenary Session
- Angelo Rivetti (Istituto Nazionale di Fisica Nucleare)
Plenary Session
- Marco Guarise (Istituto Nazionale di Fisica Nucleare)
Plenary Session
- Imad Laktineh (ipnl)
Plenary Session
- Francesca Di Lodovico (King's College London)
Plenary Session
- Elisabetta Bissaldi (Istituto Nazionale di Fisica Nucleare)
Plenary Session
- Andrea Ciavatti
Recently developed 15 um, 20 um, 25 um and 30 um cell size Hamamatsu were irradiated with reactor neutrons at JSI (Ljubljana) up to 2ร1014 n/cm^2 (1 MeV equivalent). The parameters of new and irradiated SiPMs were studied using pulsed light illumination. The effects of the neutron radiation on breakdown voltage, signal amplitude, dark current and noise for these devices are shown and discussed.
Radiation damage to a silicon photomultiplier (SiPM), as occurs during the lifetime of the planned HGCAL detector, increases the dark current and degrades the signal to noise (S/N) separation and thus the minimum ionizing particles (MIP) detection efficiency. To investigate this, a system consisting of a plastic scintillator tile directly coupled to a SiPM is used to detect the MIP from a...
Background:
Ring Imaging Cherenkov (RICH) detectors are indispensable for particle identification in experiments such as LHCb and Belle II, including their planned high-luminosity upgrades. These systems require photon sensors that combine high detection efficiency, precise timing, and robustness in magnetic fields. Silicon photomultipliers (SiPMs) meet these criteria due to their...
In the context of the ALICE 3 upgrade planned for LHC Run 5, a proximity-focusing Ring-Imaging Cherenkov (RICH) detector for charged particle identification is foreseen. It uses aerogel with a refractive index of 1.03 as the Cherenkov radiator and a photodetector surface based on Silicon Photomultiplier (SiPM) arrays. To improve charged-particle timing, the integration of a thin,...
The next-generation KOTO II experiment at J-PARC will operate at significantly higher beam intensities than its predecessor, requiring detector upgrades to maintain the stringent background suppression necessary for the search for ultra-rare $K_L \to \pi^0 \nu \bar{\nu}$ decay. One of the most critical components is the beam-hole photon veto (BHPV), which must efficiently detect the two...
To operate at Run-5 luminosities $(\,1.5 ร 10^{34}\,\,\mathrm{cm}^{โ2} \,\mathrm{s}^{โ1}\,)$, the LHCb electromagnetic calorimeter is being upgraded to PicoCal, which requires radiation-tolerant materials and fast timing to mitigate pile-up and spillover. The inner regions of the PicoCal will adopt a Spaghetti Calorimeter (SpaCal) design, based on scintillating fibres (polystyrene or garnet...
Dual-readout calorimetry is one of the technologies of interest for the next generation of leptonic colliders such as FCC-ee. By simultaneously detecting scintillation and Cherenkov signals, it promises a jet energy resolution of โ3โ4% at 90 GeV and represents the baseline solution within the IDEA detector concept. The HiDRa (Highly Granular Dual-Readout Calorimeter) demonstrator represents an...
Photon-to-Digital Converters (PDCs), or digital SiPMs, are a new generation of single-photon sensors that overcome the intrinsic limitations of conventional analog SiPMs. By digitizing the output of individual SPADs directly on-chip, PDCs eliminate the need for amplification chains and external ADCs, while providing excellent timing resolution, wide dynamic range, simplified data processing,...
Single Avalanche Photo Diodes (SPADs) have gained significant traction across diverse fields such as medical imaging, quantum communication, and time-of-flight measurements, including LiDAR (Light Detection and Ranging). This naturally extends to applications in fundamental research, where single photon detection, low noise characteristics, and superior timing resolution are key.
An optimized...
Our group performs R&D to improve the scintillating fibre tracker technology
(SciFi tracker) in general with the goal of transferring the technology to
large-scale projects, for example, the LHCb Upgrade II SciFi
Tracker. One of the key elements are the silicon photomultiplier
(SiPM) photodetectors. In order to overcome the challenges imposed by radiation
and low material budget, we are...
INFN, in collaboration with FBK (Fondazione Bruno Kessler), is developing a novel type of Silicon Photomultiplier (SiPM) โ the Back-Side Illuminated (BSI) SiPM โ 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,...
Silicon photomultipliers (SiPMs) had a transformational impact on experiments in high-energy and astrophysics. However, the SiPM is intrinsically limited in its response below 300 nm, a critical wavelength range for liquid noble scintillation detectors. We investigate AlGaN and GaN semiconductors, which have a tunable band gap and better sensitivity in the UV. With the availability of clean...
We present a Digital SiPM sensor chip which measures photon multiplicities at a rate of $\gtrsim10\mathrm{\,MHz}$, which has been fabricated using the $350\mathrm{\,nm}$ technology of the Fraunhofer IMS (Duisburg, Germany). The demonstrator chip contains a matrix of $27\times24$ pixels with SPADs of $\approx2400\mathrm{\,mm}^2$ size. Photon hits in the SPADs occurring during an externally...
ALCOR is a mixed-signal ASIC developed for the readout of silicon photomultiplier (SiPM) sensors in the ePIC dual-radiator RICH (dRICH) detector at the future Electron-Ion Collider (EIC). The current design integrates 32 channels in an 8x4 pixel array, providing high-precision timestamping with single-photon sensitivity, data-push architecture and fully digital output. Each channel features an...
The FastRICH is a novel front-end ASIC developed for single-photon detectors in future RICH systems and targeting the upgrades of the LHCb experiment. With 24.4โฏps TDC time bins, the ASIC allows for precise time-of-arrival measurements of photons in order to improve particle identification, especially in the high-multiplicity environment of the High-Luminosity LHC. The 16-channel FastRICH...
Silicon photomultipliers (SiPMs), with their compact form factor, high gain, and fast response, are enabling a new generation of fast-timing detectors across several fields and applications. Scaling up these systems requires readout electronics that combine high performance, low power consumption and dense integration. We present FastIC+, a custom ASIC developed for fast-timing applications,...
Background:
Positron emission tomography (PET) is one of the most powerful tools in modern medical imaging, enabling accurate diagnosis and monitoring of a wide range of diseases. However, current PET systems are limited by high costs, complex mechanical designs, and reliance on large amounts of scintillator material. As healthcare increasingly shifts toward early detection and personalised...
The development of detectors for high-energy photons has long been a key research topic, not only for fundamental studies but also for radiation monitoring in harsh environments โ such as in hospitals during medical treatments and in outer space exploration. Recently, there is a rapidly growing interest in novels, high-performance, radiation hard, thin, and flexible sensors capable of...
The photomultiplier tube (PMT) based on microchannel plates (MCP) is one of the fastest types of the single photon detectors. When coupled with a Cherenkov radiator it allows the time of a charged particle to be measured with an accuracy of order of 10 ps. Such a time resolution may be of interest for future high-energy physics experiments.
One of the main limitations of MCP-PMTs is the short...
The Hyper-Kamiokande (HK) is a next-generation water Cherenkov detector aiming to study a wide range of physics targets such as neutrino oscillations, neutrino astronomy, and nucleon decays. HK is under construction and is scheduled to start operation in 2028.
Approximately 20,000 newly designed 50 cm diameter PMTs manufactured by Hamamatsu Photonics K.K., R12860, will cover the inner...
Photomultiplier tubes (PMTs) are used in Imaging Atmospheric Cherenkov Telescopes (IACTs), to detect Cherenkov light produced by air showers induced by gamma rays. In the PMTs, accelerated photoelectrons occasionally collide with residual gas inside the tube, producing positive ions that strike the photocathode and generate additional electrons. This ion feedback produces afterpulses, which...
The PICosecond subMICron (PICMIC) is a new detection concept that intends to simultaneously exploit the remarkable intrinsic spatial and time precision of the MicroChannel Plate (MCP) detectors. The concept is itself made of two new ones. The first is an extension to 2-dimension of the delay line technique and allows, with a limited number of electronic channels, a precise measurement of the...
Many experiments require the detection of single photons over a large, but finely segmented sensitive area with sub-nanosecond time resolution. To this end, Large Area Picosecond Photon Detectors (LAPPDs) and High Rate Picosecond Photon Detectors (HRPPDs) were recently developed by Incom in collaboration with academy. These detectors are based on Micro-Channel Plate-PMTs and have a size of 10...
Since the recent success in solving the long-standing aging issues of Microchannel Plate Photomultiplier Tubes (MCP-PMTs) by applying atomic layer deposition (ALD) technology to the MCP pores, these fast and B-field-tolerant devices have become very attractive sensors for future experiments. Given the harsh radiation environment and the placement of the photosensors in magnetic fields of...
Owing to their single photon sensitivity and fast rise time, micro-channel-plate photomultipliers (MCP-PMTs) make good candidates as photon detectors for the Time Of Internally Reflected Cherenkov light detector (TORCH) that is proposed as part of the phase two upgrade of the LHCb experiment.
The TORCH detector has a target time resolution per photon of approximately 70ps, required to...
This study presents a comprehensive effort to understand the timing and charge sharing in MCP PMTs. While we have investigated in detail - through on-the-bench tests and by modeling the response - the Large Area Picosecond Photodetectors (LAPPD) of Generation II, developed by Incom Inc., we have also compared our model predictions with our past studies of Burle/Photonis and Photek MCP PMTs. ...
For the High-Luminosity phase of the LHC (HL-LHC), the Compact Muon Solenoid (CMS) experiment is undergoing an upgrade with the addition of the new MIP Timing Detector (MTD), designed to measure the arrival time of charged particles with a precision of 30-60 ps. The time information from the MTD will help handle the expected ~200 concurrent interactions per bunch crossing (pileup) to preserve...
Silicon Photomultipliers (SiPMs) are under consideration for the outer timing layer of ALICE 3, the next-generation heavy-ion experiment at the LHC, which will replace the present ALICE experiment for LS4 (2034-2035) and beyond. While SiPMs are traditionally coupled to external scintillators or Cherenkov radiators, recent studies have shown that they can directly detect charged particles...
High-spatial resolution scintillator detectors can achieve very precise particle tracking capability, when owing to a very fine segmentation down to a few hundred micrometers.
However, the required granularity comes with the price of additional complexity in the detector manufacturing and construction that can make the scaling up to large volumes and masses rather prohibitive.
Moreover,...
The Taishan Antineutrino Observatory (TAO, also known as JUNO-TAO) is a satellite experiment of the Jiangmen Underground Neutrino Observatory (JUNO). Its central detector is equipped with 4024 customized silicon photomultiplier (SiPM) tiles, each featuring a dimension of 5cm * 5cm, covering nearly 10 m$^2$ of spherical surface area. Operated at -50 $^\circ$C with low-temperature liquid...
The CYGNO/INITIUM collaboration is developing a novel strategy for directional Dark Matter searches based on a gaseous Time Projection Chamber (TPC). The detector is optimized for the exploration of light (0.5โ50 GeV) WIMPs-like particles and employs a He/CFโ gas mixture at atmospheric pressure, sensitive to both spin-dependent and spin-independent interactions.
A key feature of the project...
This work presents the design, development, and calibration of the engineering Cherenkov camera developed for the nine innovative dual-mirror imaging atmospheric telescopes of the ASTRI Mini-Array. This international project, led by the Italian National Institute for Astrophysics (INAF), is dedicated to ground-based gamma-ray astronomy. Located at the Observatorio del Teide in Tenerife, Spain,...
The SiSMUV project (SiPM-based Space Monitor for UV-light) is devoted to the development of a compact, modular UV detector employing SiPM technology for space telescopes, designed to measure fluorescence and Cherenkov emissions generated by Ultra-High Energy Cosmic Rays (UHECRs).
SiSMUV incorporates state-of-the-art Hamamatsu SiPM matrices, low-power front-end electronics, and local...
The DarkSide-20k experiment, a next-generation direct dark matter search using a dual-phase liquid argon time projection chamber, requires highly sensitive and radiopure light detection systems. This talk will present the production workflow and quality assurance procedures for the SiPM-based photo detection units (PDUs), developed specifically for DarkSide-20k. Each PDU is composed of 16...
The Deep Underground Neutrino Experiment (DUNE) is a next-generation long-baseline experiment for neutrino physics currently under construction in the US, aiming to measure neutrino oscillation parameters, search for beyond standard model physics and detect supernova neutrinos. DUNE will include a Near Detector (ND) and a Far Detector (FD), located 1300 km away from the ND and 1.5 km...
Detecting the deep VUV scintillation light from noble elements such as argon (128 nm) and xenon (178 nm) remains a major challenge in fully realizing the physics potential of modern dark matter and neutrino detectors. Existing direct detection technologies (cryo VUV SiPMs and PMTs) typically achieve efficiencies below 20%. In this talk, we present the first comprehensive characterization of...
Moving beyond the conventional paradigm of transparency in detection, the LiquidO collaboration proposes an innovative approach to particle detection. Developed in 2012 and unveiled at CERN in 2019, LiquidO introduces an opaque medium with a short scattering length that stochastically confines light to within centimetres of the point of energy deposition. This lightโarising from Cherenkov...
The use of solution processable materials in direct ionising radiation photodetectors is currently an active research quest that is achieving exciting results. Devices based on Perovskites, Organic Semiconductors, Metal Organic Frameworks and Colloidal Quantum Dots have been demonstrated as efficient, inexpensive and easily processable sensing materials for Gamma, X-rays, Protons or Alpha...
CsPbCl3/Br3 inorganic perovskite are attracting an increasing interest in ultraviolet and visible photo-detection due to their superior intrinsic optoelectronic properties. In this study, a novel one-step magnetron sputtering technique was applied for fabricating CsPbCl3/Br3 polycrystalline films on flexible and glass substrates with interdigitated contacts. The photoconductive response of...
Metal halide perovskites combine high optical absorption coefficient, bandgap tunability, and the use of heavy atoms, making them attractive for photodetectors across the visible and X-ray range. However, most demonstrations rely on solution processing, which presents challenges in terms of reproducibility, substrate compatibility, and large-area uniformity. Vapor-based methods provide a...
Wavelength-shifting photon detection systems (PDS) are critical components in noble-liquid detectors for high-energy physics and dark-matter searches. The vacuum ultraviolet (VUV) scintillation from liquid argon (LAr, ~128 nm) and liquid xenon (LXe, ~175 nm) must be shifted to longer wavelengths to enable efficient detection with state-of-the-art photodetectors such as photomultiplier tubes...
