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Large Area Picosecond PhotoDetectors (LAPPDs) are photosensors based on microchannel plate technology with about 400 cm$^2$ sensitive area. The external readout plane of a capacitively coupled LAPPD can be segmented into pads providing a…

Low gain avalanche detectors can measure charged particle fluences with high speed and spatial precision, and are a promising technology for radiation monitoring and dosimetry. A detector has been tested in a medical linac where single…

Instrumentation and Detectors · Physics 2022-02-17 Tommaso Isidori , Patrick McCavana , Brendan McClean , Ronan McNulty , Nicola Minafra , Naomi Raab , Luke Rock , Christophe Royon

The next-generation ALICE 3 experiment at the High-Luminosity LHC (HL-LHC) requires detector technologies that combine fine spatial resolution, fast timing, and an extremely low material budget. This paper presents the design,…

Instrumentation and Detectors · Physics 2026-01-07 Umberto Follo

Low-Gain Avalanche Detectors are gathering interest in the High-Energy Physics community thanks to their fast-timing and radiation-hardness properties, which are planned to be exploited, for example, in timing detectors for the upgrades of…

Instrumentation and Detectors · Physics 2019-05-07 Gabriele Giacomini , Wei Chen , Francesco Lanni , Alessandro Tricoli

4H-SiC low gain avalanche detectors (LGADs) have been fabricated and characterized. The devices employ a circular mesa design with low-resistivity contacts and an SiO$_2$ passivation layer. The I-V and C-V characteristics of the 4H-SiC…

In the past years, it has been observed at several beam test campaigns that irradiated LGAD sensors break with a typical star shaped burn mark when operated at voltages much lower than those at which they were safely operated during…

This paper reports on the demonstration of a high-rate energy measurement technique using a thin depletion layer silicon avalanche photodiode (Si-APD). A dedicated amplitude-to-time converter is developed to realize simultaneous energy and…

Instrumentation and Detectors · Physics 2018-11-05 T. Masuda , T. Hiraki , H. Kaino , S. Kishimoto , Y. Miyamoto , K. Okai , S. Okubo , R. Ozaki , N. Sasao , K. Suzuki , S. Uetake , A. Yoshimi , K. Yoshimura

We show the developments carried out to improve the silicon sensor technology for the detection of soft X-rays with hybrid X-ray detectors. An optimization of the entrance window technology is required to improve the quantum efficiency. The…

The proven radiation hardness of silicon 3D devices up to fluences of $1 {\times} 10^{17}$ $n_{eq}/cm^{2}$ makes them an excellent choice for next generation trackers, providing < 10 ${\mu}m$ position resolution at a high multiplicity…

Instrumentation and Detectors · Physics 2024-03-05 Evangelos-Leonidas Gkougkousis , Edgar Lemos Cid , Viktor Coco

We have studied the performance of large area avalanche photodiodes (APDs) recently developed by Hamamatsu Photonics K.K, in high-resolution X-rays and Gamma-rays detections. We show that reach-through APD can be an excellent soft X-ray…

Astrophysics · Physics 2009-11-11 J. Kataoka , T. Saito , Y. Kuramoto , T. Ikagawa , Y. Yatsu , J. Kotoku , M. Arimoto , N. Kawai , Y. Ishikawa , N. Kawabata

Silicon carbide (SiC) is a promising material for radiation monitoring in harsh environments, due to its low dark current, high breakdown voltage, high thermal conductivity, and radiation hardness.~This work investigates a SiC-based…

Instrumentation and Detectors · Physics 2025-07-17 Sen Zhao , Jiaqi Zhou , Chenxi Fu , Congcong Wang , Suyu Xiao , Xinbo Zou , Haolan Qv , Jiaxiang Chen , Xiyuan Zhang , Xin Shi

We report results from the testing of 35 {\mu}m thick Ultra-Fast Silicon Detectors (UFSD produced by Hamamatsu Photonics (HPK), Japan and the comparison of these new results to data reported before on 50 {\mu}m thick UFSD produced by HPK.…

In the past 10 years, two design innovations, the introduction of low internal gain (LGAD) and of resistive read-out (RSD), have radically changed the performance of silicon detectors. The LGAD mechanism, increasing the signal-to-noise…

The 4H-SiC material exhibits good detection performance, but there are still many problems like signal distortion and poor signal quality. The 4H-SiC low gain avalanche detector (LGAD) has been fabricated for the first time to solve these…

Instrumentation and Detectors · Physics 2024-05-29 Sen Zhao , Keqi Wang , Kaibo Xie , Chenxi Fu , Chengwei Wang , Xin Shi , Congcong Wang

An experiment measuring the 2S Lamb shift in muonic hydrogen mup is being performed at the Paul Scherrer Institute, Switzerland. It requires small and compact detectors for 1.9 keV x rays (2P-1S transition) with an energy resolution around…

The analog front-end for the Low Gain Avalanche Detector (LGAD) based precision timing application in the CMS Endcap Timing Layer (ETL) has been prototyped in a 65 nm CMOS mini-ASIC named ETROC0. Serving as the very first prototype of ETL…

This contribution will delve into the design and performance of the newly produced Silicon Carbide Low Gain Avalanche Detectors (4H-SiC LGADs) and provide a comprehensive summary of their measured characteristics. This includes an analysis…

The development of detectors that provide high resolution in four dimensions has attracted wide-spread interest in the scientific community for several applications in high-energy physics, nuclear physics, medical imaging, mass spectroscopy…

This paper reports on the spatial and temporal resolutions of an RSD 450 microns pitch pixels array measured at the DESY test beam facility. RSDs, Resistive Silicon Detectors, also known as AC-LGAD, achieve excellent position and temporal…