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Your search keyword '"Tessarotto, Fulvio"' showing total 3 results
Start Over Author "Tessarotto, Fulvio" Topic cherenkov radiation
3 results on '"Tessarotto, Fulvio"'

1. Characterization of LAPPD timing at CERN PS testbeam.

Author

Bhattacharya, Deb Sankar, Bressan, Andrea, Chatterjee, Chandradoy, Torre, Silvia Dalla, Gregori, Mauro, Kiselev, Alexander, Levorato, Stefano, Martin, Anna, Minutoli, Saverio, Osipenko, Mikhail, Rai, Richa, Ripani, Marco, Tessarotto, Fulvio, and Triloki, Triloki

Subjects
*CHERENKOV radiation, *MICROCHANNEL plates, *TIME measurements, *HIGH voltages, *SPATIAL resolution, *PHOTODETECTORS, *PHOTOELECTRONS
Abstract

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 spatial resolution down to 1 mm scale. The LAPPD signals have about 0.5 ns rise time followed by a slightly longer fall time and their amplitude reaches a few dozens of mV per single photoelectron. In this article, we report on the measurement of the time resolution of an LAPPD prototype in a test beam exercise at CERN PS. Most of the previous measurements of LAPPD time resolution had been performed with laser sources. In this article we report time resolution measurements obtained through the detection of Cherenkov radiation emitted by high energy hadrons. Our approach has been demonstrated capable of measuring time resolutions as fine as 25-30 ps. The available prototype had performance limitations, which prevented us from applying the optimal high voltage setting. The measured time resolution for single photoelectrons is about 80 ps r.m.s. [ABSTRACT FROM AUTHOR]

Published
2024
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2. Status of the development of large area photon detectors based on THGEMs and hybrid MPGD architectures for Cherenkov imaging applications

Author

M. Alexeev, R. Birsa, F. Bradamante, A. Bressan, M. Büchele, M. Chiosso, P. Ciliberti, S. Dalla Torre, S. Dasgupta, O. Denisov, V. Duic, M. Finger, H. Fischer, M. Giorgi, B. Gobbo, M. Gregori, F. Herrmann, K. Königsmann, S. Levorato, A. Maggiora, A. Martin, G. Menon, K. Steiger, J. Novy, D. Panzieri, F.A. Pereira, C.A. Santos, G. Sbrizzai, P. Schiavon, S. Schopferer, M. Slunecka, F. Sozzi, L. Steiger, M. Sulc, S. Takekawa, F. Tessarotto, J.F.C.A. Veloso, N. Makke, Alexeev, M., Birsa, Renato, Bradamante, Franco, Bressan, Andrea, Büchele, M., Chiosso, M., Ciliberti, Piero, Torre, S. Dalla, Dasgupta, SHUDDHA SHANKAR, Denisov, O., Duic, Venicio, Finger, M., Fischer, H., Giorgi, Marcello, Gobbo, Benigno, Gregori, M., Herrmann, F., Königsmann, K., Levorato, Stefano, Maggiora, A., Martin, Anna, Menon, G., Steiger, K., Novy, J., Panzieri, D., Pereira, F. A., Santos, C. A., Sbrizzai, Giulio, Schiavon, Paolo, Schopferer, S., Slunecka, M., Sozzi, Federica, Steiger, Luka, Sulc, M., Takekawa, Stefano, Tessarotto, Fulvio, Veloso, J. F. C. A., and Makke, Nour

Subjects
Nuclear and High Energy Physics, Photon, Physics::Instrumentation and Detectors, Hybrid detector, Micro-pattern gas detectors, Micromegas, RICH, THGEM, Instrumentation, PID, COMPASS, 01 natural sciences, Noise (electronics), 030218 nuclear medicine & medical imaging, Nuclear physics, 03 medical and health sciences, 0302 clinical medicine, 0103 physical sciences, Electronics, Cherenkov radiation, Physics, Large Hadron Collider, 010308 nuclear & particles physics, business.industry, Detector, MicroMegas detector, Upgrade, Optoelectronics, High Energy Physics::Experiment, business
Abstract

We report about the development status of large area gaseous single photon detectors based on a novel hybrid concept for RICH applications. The hybrid concept combines Thick Gaseous Electron Multipliers (THGEMs) coupled to CsI, working as a photon sensitive pre-amplification stage, and Micromegas, as a multiplication stage. The most recent achievements within the research and development programme consist in the assembly and study of View the MathML source hybrid photon detectors, the optimization of front-end electronics, and engineering towards large area detectors. Hybrid detectors with an active area of View the MathML source have been successfully operated in laboratory conditions and at a CERN PS T10 test beam, achieving effective gains in the order of 105 and good time resolution (View the MathML source); APV25 front-end chips have been coupled to the detector resulting in noise levels lower than 1000 electrons; the production and characterization of View the MathML source THGEMs is ongoing. A set of hybrid detectors with View the MathML source active area is envisaged to upgrade COMPASS RICH-1 at CERN in 2016.

Published
2016

3. Hybrid MPGD-based detectors of single photons for the upgrade of COMPASS RICH-1

Author

M. Alexeev, M. Finger, H. Fischer, B. Gobbo, M. Gregori, F. Herrmann, K. Konigsmann, S. Levorato, A. Maggiora, N. Makke, R. Birsa, A. Martin, G. Menon, K. Novakova, J. Novy, D. Panzieri, F. A. Pereira, C. A. Santos, G. Sbrizzai, P. Schiavon, S. Schopferer, F. Bradamante, M. Slunecka, L. Steiger, M. Sulc, F. Tessarotto, J. F. C. A. Veloso, A. Bressan, M. Chiosso, P. Ciliberti, S. Dalla Torre, S. Dasgupta, O. Denisov, Alexeev, M., Birsa, Renato, Bradamante, Franco, Bressan, Andrea, Chiosso, M., Ciliberti, Piero, Dalla Torre, S., Dasgupta, SHUDDHA SHANKAR, Denisov, O., Finger, M., Fischer, H., Gobbo, Benigno, Gregori, M., Herrmann, F., Konigsmann, K., Levorato, Stefano, Maggiora, A., Makke, Nour, Martin, Anna, Menon, G., Novakova, K., Novy, J., Panzieri, D., Pereira, F. A., Santos, C. A., Sbrizzai, Giulio, Schiavon, Paolo, Schopferer, S., Slunecka, M., Steiger, Luka, Sulc, M., Tessarotto, Fulvio, and Veloso, J. F. C. A.

Subjects
Nuclear and High Energy Physics, Radiology, Nuclear Medicine and Imaging, Physics::Instrumentation and Detectors, COMPASS, Particle detector, Photocathode, Thick GEM, Optics, Nuclear Medicine and Imaging, Compass, RICH, Instrumentation, Cherenkov radiation, Nuclear and High Energy Physic, Micropat-tern gas detector, Photon detection, Physics, business.industry, Detector, MicroMegas detector, Upgrade, Gas electron multiplier, Radiology, business
Abstract

A seven year-long R&D programme has been performed and the resulting detector architecture is a hybrid MPGD including two THick GEM (THGEM) multiplication stages followed a MICROMEGAS. The first THGEM board forms the photocathode support: its upper face is CsI coated. The properties of THGEM-based photocathodes have been studied in details. The two THGEM layers act as pre-amplification stages and, thanks to a staggered configuration, namely by the misalignment of the holes of the two THGEMs, the electron shower produced in the pre-amplification phase is distributed onto a larger surface portion of the following MICROMEGAS unit, where the final multiplication takes place: it is so possible to operate at gains as high as 105 and more even in radioactive environments. COMPASS RICH-1 is a large-size Cherenkov imaging counter with gaseous radiator for hadron identification up to 50 GeV/c. The construction of a set of large-size (unit size: 60×60 cm2) gaseous photon detectors based on the hybrid MPGD architecture for the upgrade of COMPASS RICH-1 is ongoing and the upgraded detector will be in operation in 2016. The R&D studies, the engineering aspects and the construction challenges are presented.

Published
2015

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