Conveners
Photo Detectors and Particle ID - Poster session
- Samo Korpar (University of Maribor)
- Ana Amelia Bergamini Machado (LNGS)
Photon science with extended ultra violet (EUV) to soft X-ray photons generated by state of the art synchrotrons and FEL sources imposes an urgent need for suitable photon imaging detectors. Requirements on such EUV detectors include high quantum efficiency, high frame rates, very large dynamic range, single-photon sensitivity with low probability of false positives, small pixel pitch and...
Sensors based on GaAs are of particular interest as X-ray detectors since they have several advantages over Si, like a wider bandgap (lower dark current) and higher atomic number (higher detection efficiency).
In recent years we have developed and have studied Separate Absorption and Multiplication Avalanche PhotoDiodes in GaAs designed explicitly for synchrotron and free electron laser,...
Silicon Photo-Multipliers (SiPMs) are widely used as light detectors for the new generation of experiments dedicated to high energy physics. For these reason, we tested several recent devices from different manufacturers: Hamamatsu 13xxx and 14xxx series; Ketek; SensL ONsemiconductors; AdvanSid; Broadcom. Particular emphasis has been put on measurements of breakdown voltage, dark counts and...
Photon Science X-ray Sources (PSXSs) are divided between Synchrotron Rings (SRs), and Free Electron Lasers (FELs), having either low (<200Hz) or high (>=1MHz) repetition rate. SRs and low-repetition-rate FELs are usually served by imagers capable of continuous readout up to a few k-frame/s; while high-repetition-rate FELs need dedicated detectors capable of M-frame/s, but only for short...
Due to their single-photon sensitivity and timing resolution, SiPMs are now the baseline solution for a large fraction of noble liquid experiments and medical imaging such as positron emission tomography, among others. Following this trend, digital SiPMs, or Photon-to-Digital Converters (PDC), are foreseen like the next generation of photon sensors. PDCs and SiPMs are both based on an array of...
A 7.25 x 12.04 cm^2 Silicon Drift Detector (SDD) has been developed for the enhanced X-Ray Timing and Polarimetry (eXTP) mission of the Chinese Academy of Science, with a large contribution by a European consortium inherited from the ESA-M3 LOFT mission study. In the frame of the project X-Ray Observatories (XRO), active in the National Scientific Commission 2 of the INFN, we report the...
X-ray photon science at free-electron lasers (FEL) and synchrotron light sources supports diverse research spanning from medicine to solid-state physics. Detectors that are able to cope with the brilliance, repetition rate, and pulse duration of these X-ray sources are in high demand. The hybrid silicon pixel detector JUNGFRAU provides low noise and, simultaneously, high dynamic range, fast...
A typical gamma camera for full-body Single Photon Emission Computed Tomography (SPECT) employs a lead collimator and a scintillator crystal (∼ 50 x 40 x 10) cm$^3$. The crystal is coupled to an array of 50-100 photo-multiplier tubes (PMTs). The camera is shielded by a thick layer of lead, making it heavy and bulky. Its weight and size could be significantly reduced if replacing the PMTs by...
A novel imaging technique for thermal neutrons using a fast-optical camera is presented. Thermal neutrons are reacted with Lithium-6 to produce a pair of 2.73 MeV tritium and 2.05 MeV alpha particles, which in turn interact in a thin layer of LYSO crystal scintillator to produce a localized flash of light. These photons are directed by a pair of lenses to a micro-channel plate intensifier, the...
In the forward end-cap of the Belle II spectrometer, the proximity focusing Ring Imaging Cherenkov counter with an aerogel radiator (ARICH) has been in operation since 2018. The single Cherenkov photons emitted from a double layer aerogel radiator are detected by 420 Hamamatsu hybrid avalanche photodetectors (HAPD) with 144 channels working in a perpendicular 1.5 T magnetic field. The sensor...
The organometal halide perovskites (OMHP) semiconductors are promising candidates for fast, sensitive and large area photodetectors. A gain in OMHP based detectors has been observed in several architectures, but usually in association with a slow time response. A model describing the underlying mechanics is still missing or at least incomplete. In this talk the state of art of the...
Silicon Photo-Multipliers (SiPMs) have emerged as a compelling photo-sensor solution over the course of the last decade and due to their optimal operation at cryogenic temperatures and low radioactivity levels are the baseline photo-sensor solution for several next generation dark matter detectors.
SiPMs are the baseline photo-sensor solution for the Darkside-20k detector and thanks to their...
The ABALONE is a new type of photosensor produced by PhotonLab with cost effective mass production, robustness and high performance. This modern technology provides sensitivity to visible and UV light, exceptional radio-purity and excellent detection performance in terms of intrinsic gain, afterpulsing rate, timing resolution and single-photon sensitivity. This new hybrid photosensor, that...
The Mu3e experiment searches for a rare lepton flavor violating μ+ → e+e+e− decay and it aims at reaching an ultimate sensitivity of 10−16 on the branching fraction of the μ+ → e+e+e− decay, four orders of magnitude better than the current limit B(μ+ → e+e+e−) < 10−12. The experiment will be hosted at the Paul Scherrer Institute (Villigen, Switzerland) which delivers the most intense low...
TORCH is a large-area time-of-flight (ToF) detector, proposed for the Upgrade-II of the LHCb experiment. The detector will provide charged hadron identification over the 2-20 GeV/c range to complement LHCb’s particle identification to lower momentum. To achieve this level of performance, a 15 ps timing resolution per track is required, given a 10 m flight distance from the LHC interaction...
TRICK is a project funded by the INFN CSNV Young grant 2021. It will deploy an innovative 5D technique to provide incoming particles' 3D position, time, and ID information. The proposed idea is based on the well-known technology of GEM-based TPC together with conventional Aerogel proximity focussing RICH in one single box. Both TPC and RICH parts will be readout simultaneously and instrumented...
