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Preliminary results of a photon detector combining a Micromegas like multiplier coated with a UV-sensitive CsI photocathode are described. The multiplier is made in a CMOS compatible InGrid technology, which allows to post-process it…

Instrumentation and Detectors · Physics 2015-05-18 Joost Melai , Alexey Lyashenko , Amos Breskin , Harry van der Graaf , Jan Timmermans , Jan Visschers , Cora Salm , Jurriaan Schmitz

Ultraviolet (UV) imagers are important for a variety of applications, such as quality inspection in the semiconductor industry, forensics and food quality inspection, but are often costly because they require dedicated semiconductor process…

Instrumentation and Detectors · Physics 2026-01-05 Suman Kundu , Tao Shen , Kai Betlem , Murali K Ghatkesar , Peter G Steeneken , Frans P Widdershoven

In this study we present first results from a new detector of UV photons: a thick gaseous electron multiplier (GEM) with resistive electrodes, combined with CsI or CsTe/CsI photocathodes. The hole type structure considerably suppresses the…

Instrumentation and Detectors · Physics 2008-11-26 J. M. Bidault , P. Fonte , T. Francke , P. Galy , V. Peskov , I. Rodionov

We have fabricated UV-sensitive photodetectors based on colloidal CdS nanocrystals and graphene. The nanocrystals act as a sensitizer layer that improves light harvesting leading to high responsivity of the detector. Despite the slow…

Mesoscale and Nanoscale Physics · Physics 2019-04-19 Davide Spirito , Stefan Kudera , Vaidotas Miseikis , Carlo Giansante , Camilla Coletti , Roman Krahne

There are several applications which require high position resolution UV imaging. For these applications we have developed and successfully tested a new version of a 2D UV single photon imaging detector based on a microgap RPC. The main…

Instrumentation and Detectors · Physics 2009-11-11 P. Fonte , T. Francke , N. Pavlopoulos , V. Peskov , I. Rodionov

Integrated circuits based on CMOS (complementary metal-oxide semiconductors) are at the heart of the technological revolution of the past 40 years, as these have enabled compact and low cost micro-electronic circuits and imaging systems.…

A novel read-out architecture has been developed for the Micromegas detector. The anode element is made of a resistive layer on a ceramic substrate. The detector part is entirely separated from the read-out element. Without significant…

Instrumentation and Detectors · Physics 2015-06-11 D. Attie , A. Chaus , P. Colas , E. Ferrer , J. Galan , I. Giomatari , F. J. Iguaz , A. Gongadze , R. De Oliveira , T. Papaevangelou , A. Peyaud

We present the development of a single-photon detector and the connected read-out electronics. This `hybrid' detector is based on a vacuum tube, transmission photocathode, microchannel plate and a pixelated CMOS read-out anode encapsulating…

Instrumentation and Detectors · Physics 2022-07-06 J. A. Alozy , N. V. Biesuz , M. Campbell , V. Cavallini , A. Cotta Ramusino , M. Fiorini , M. Guarise , X. Llopart Cudie

We describe a UV photo-detector with single photon(electron) counting and imaging capability. It is based on a CsI photocathode, a GEM charge multiplier and a self triggering CMOS analog pixel chip with 105k pixels at 50 micron pitch. The…

The Medipix4 chip is the latest member in the Medipix/Timepix family of hybrid pixel detector chips aimed at high-rate spectroscopic X-ray imaging using high-Z materials. It can be tiled on all 4 sides making it ideal for constructing…

CMOS Monolithic Active Pixel Sensors (CPS) are ultra-light and highly granular silicon pixel detectors suited for highly sensitive charged particle tracking. Being manufactured with cost efficient standard CMOS processes, CPS may integrate…

Instrumentation and Detectors · Physics 2020-01-29 M. Deveaux

In the last years, optical readout of Micromegas gaseous detectors has been achieved by implementing a Micromegas detector on a glass anode coupled to a CMOS camera. Effective X-ray radiography was demonstrated using integrated imaging…

The phase 1 upgrade of the CMS pixel detector has been designed to maintain the tracking performance at instantaneous luminosities of $2 \times 10^{34} \mathrm{~cm}^{-2} \mathrm{~s}^{-1}$. Both barrel and endcap disk systems now feature one…

Instrumentation and Detectors · Physics 2018-07-25 Jory Sonneveld

The concept of capacitive coupling between sensors and readout chips is under study for the vertex detector at the proposed high-energy CLIC electron positron collider. The CLICpix Capacitively Coupled Pixel Detector (C3PD) is an active…

Instrumentation and Detectors · Physics 2017-10-06 I. Kremastiotis , R. Ballabriga , M. Campbell , D. Dannheim , A. Fiergolski , D. Hynds , S. Kulis , I. Peric

The PICOSEC detection concept consists in a "two-stage" Micromegas detector coupled to a Cherenkov radiator and equipped with a photocathode. A proof of concept has already been tested: a single-photoelectron response of 76 ps has been…

A small drift chamber was read out by means of a MediPix2 readout chip as direct anode. A Micromegas foil was placed 50 $\mu$m above the chip, and electron multiplication occurred in the gap. With a He/Isobutane 80/20 mixture, gas…

We are developing a compact UV Imager using light weight components, that can be flown on a small CubeSat or a balloon platform. The system has a lens-based optics that can provide an aberration-free image over a wide field of view. The…

Instrumentation and Methods for Astrophysics · Physics 2017-03-06 S. Ambily , Joice Mathew , Mayuresh Sarpotdar , A. G. Sreejith , K. Nirmal , Ajin Prakash , Margarita Safonova , Jayant Murthy

We present a novel single-photon detector based on a vacuum tube incorporating a photocathode, a microchannel plate (MCP), and a Timepix4 CMOS ASIC functioning as a pixelated anode. Designed to handle photon rates up to 1 billion per second…

Studies of a single photon counting hybrid pixel detector for X-ray imaging applications are presented. A silicon- and a CdTe-sensor were bump bonded onto the MPEC pixel readout chip and could be successfully operated. A new USB based…

High Energy Physics - Experiment · Physics 2007-05-23 P. Fischer , M. Kouda , S. Krimmel , H. Krueger , M. Lindner , M. Loecker , G. Sato , T. Takahashi , S. Watanabe , N. Wermes

A Set of new MPGD-based Photon Detectors is being built for the upgrade of COMPASS RICH-1. The detectors cover a total active area of 1.4 m$^2$ and are based on a hybrid architecture consisting of two THGEM layers and a Micromegas. A CsI…

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