Search

Your search keyword '"Bisogni M.G."' showing total 261 results
Start Over Author "Bisogni M.G."
261 results on '"Bisogni M.G."'

1. Ion charge separation with new generation of nuclear emulsion films

Author

Montesi M.C., Lauria A., Alexandrov A., Solestizi L. Alunni, Giovanni Ambrosi, Argirò S., Diaz R. Arteche, Bartosik N., Battistoni G., Belcari N., Bellinzona E., Bianucci S., Biondi S., Bisogni M.G., Bruni G., Camarlinghi N., Carra P., Cerello P., Ciarrocchi E., Clozza A., Colombi S., Guerra A. Del, Simoni M. De, Crescenzo A. Di, Donetti M., Dong Y., Durante M., Embriaco A., Emde M., Faccini R., Ferrero V., Ferroni F., Fiandrini E., Finck C., Fiorina E., Fischetti M., Francesconi M., Franchini M., Galati G., Galli L., Garbini M., Gentile V., Giraudo G., Hetzel R., Iarocci E., Ionica M., Kanxheri K., Kraan A. C., Lante V., Tessa C. La, Torres E. Lopez, Marafini M., Mattei I., Mengarelli A., Mirabelli R., Moggi A., Morone M.C., Morrocchi M., Muraro S., Narici L., Pastore A., Pastrone N., Patera V., Pennazio F., Placidi P., Pullia M., Raffaelli F., Ramello L., Ridolfi R., Rosso V., Rovituso M., Sanelli C., Sarti A., Sartorelli G., Sato O., Savazzi S., Scavarda L., Schiavi A., Schuy C., Scifoni E., Sciubba A., Sécher A., Selvi M., Servoli L., Silvestre G., Sitta M., Spighi R., Spiriti E., Sportelli G., Stahl A., Tioukov V., Tomassini S., Tommasino F., Traini G., Valle S.M., Vanstalle M., Villa M., Weber U., Zoccoli A., and Lellis G. De

Subjects
charge identification, nuclear emulsions, charged particles therapy, 29.40.rg, 42.62.be, Physics, QC1-999
Abstract

In hadron therapy, the accelerated ions, interacting with the body of the patient, cause the fragmentation of both projectile and target nuclei. The fragments interact with the human tissues depositing energy both in the entrance channel and in the volume surrounding the tumor. The knowledge of the fragments features is crucial to determine the energy amount deposited in the human body, and - hence - the damage to the organs and to the tissues around the tumor target.

Published
2019
Full Text
View/download PDF

2. The FLUKA Monte Carlo simulation of the magnetic spectrometer of the FOOT experiment

Author

Dong, Y., Valle, S.M., Battistoni, G., Mattei, I., Finck, C., Patera, V., Alexandrov, A., Alpat, B., Ambrosi, G., Argirò, S., Barbanera, M., Bartosik, N., Bisogni, M.G., Boccia, V., Cavanna, F., Cerello, P., Ciarrocchi, E., De Gregorio, A., De Lellis, G., Di Crescenzo, A., Di Ruzza, B., Donetti, M., Durante, M., Faccini, R., Ferrero, V., Fiorina, E., Francesconi, M., Franchini, M., Franciosini, G., Galati, G., Galli, L., Ionica, M., Iuliano, A., Kanxheri, K., Kraan, A.C., La Tessa, C., Lauria, A., Lopez Torres, E., Magi, M., Manna, A., Marafini, M., Massa, M., Massimi, C., Mengarelli, A., Mereghetti, A., Minniti, T., Moggi, A., Montesi, M.C., Morone, M.C., Morrocchi, M., Pastrone, N., Peverini, F., Pennazio, F., Pisanti, C., Placidi, P., Pullia, M., Ramello, L., Reidel, C., Ridolfi, R., Sabatini, L., Salvi, L., Sanelli, C., Sarti, A., Sato, O., Savazzi, S., Scavarda, L., Schiavi, A., Schuy, C., Scifoni, E., Servoli, L., Silvestre, G., Sitta, M., Spighi, R., Spiriti, E., Tioukov, V., Tomassini, S., Tommasino, F., Toppi, M., Trigilio, A., Traini, G., Ubaldi, G., Valetti, A., Vanstalle, M., Villa, M., Weber, U., Zarrella, R., Zoccoli, A., and Muraro, S.

Published
2025
Full Text
View/download PDF

6. The fragmentation trigger of the FOOT experiment

Author

Galli, L., Bartosik, N., Bisogni, M.G., Bon, M., Cerello, P., Ciarrocchi, E., Colombi, S., De Gregorio, A., Kraan, A.C., Francesconi, M., Franciosini, G., Marafini, M., Marini, L., Morrocchi, M., Patera, V., Ridolfi, R., Sarti, A., Toppi, M., Traini, G., Villa, M., and Zarrella, R.

Published
2023
Full Text
View/download PDF

8. Charge identification of nuclear fragments with the FOOT Time-Of-Flight system

Author

Kraan, A.C., Zarrella, R., Alexandrov, A., Alpat, B., Ambrosi, G., Argirò, S., Arteche Diaz, R., Bartosik, N., Battistoni, G., Belcari, N., Bellinzona, E., Biondi, S., Bruni, G., Carra, P., Cerello, P., Ciarrocchi, E., Clozza, A., Colombi, S., De Lellis, G., Del Guerra, A., De Simoni, M., Di Crescenzo, A., Di Ruzza, B., Donetti, M., Dong, Y., Durante, M., Faccini, R., Ferrero, V., Fiandrini, E., Finck, C., Fiorina, E., Fischetti, M., Francesconi, M., Franchini, M., Franciosini, G., Galati, G., Galli, L., Gentile, V., Giraudo, G., Hetzel, R., Iarocci, E., Ionica, M., Iuliano, A., Kanxheri, K., Lante, V., La Tessa, C., Laurenza, M., Lauria, A., Lopez Torres, E., Marafini, M., Massimi, C., Mattei, I., Mengarelli, A., Moggi, A., Montesi, M.C., Morone, M.C., Morrocchi, M., Muraro, S., Murtas, F., Pastore, A., Pastrone, N., Patera, V., Pennazio, F., Placidi, P., Pullia, M., Raffaelli, F., Ramello, L., Ridolfi, R., Rosso, V., Sanelli, C., Sarti, A., Sartorelli, G., Sato, O., Savazzi, S., Scavarda, L., Schiavi, A., Schuy, C., Scifoni, E., Sciubba, A., Sécher, A., Selvi, M., Servoli, L., Silvestre, G., Sitta, M., Spighi, R., Spiriti, E., Sportelli, G., Stahl, A., Tioukov, V., Tomassini, S., Tommasino, F., Toppi, M., Traini, G., Valle, S.M., Vanstalle, M., Villa, M., Weber, U., Zoccoli, A., and Bisogni, M.G.

Published
2021
Full Text
View/download PDF

13. Corrigendum to “The FLUKA Monte Carlo simulation of the magnetic spectrometer of the FOOT experiment” [Computer physics communications, Volume 307, (2025) 109398]

Author

Dong, Y., Valle, S.M., Battistoni, G., Mattei, I., Finck, C., Patera, V., Alexandrov, A., Alpat, B., Ambrosi, G., Argiro, S., Barbanera, M., Bartosik, N., Bisogni, M.G., Boccia, V., Cavanna, F., Cerello, P., Ciarrocchi, E., De Gregorio, A., De Lellis, G., Crescenzo, A. Di, Ruzza, B. Di, Donetti, M., Durante, M., Faccini, R., Ferrero, V., Fiorina, E., Francesconi, M., Franchini, M., Franciosini, G., Galati, G., Galli, L., Ionica, M., Iuliano, A., Kanxheri, K., Kraan, A.C., La Tessa, C., Lauria, A., Torres, E. Lopez, Magi, M., Manna, A., Marafini, M., Massa, M., Massimi, C., Mengarelli, A., Mereghetti, A., Minniti, T., Moggi, A., Montesi, M.C., Morone, M.C., Morrocchi, M., Pastrone, N., Peverini, F., Pennazio, F., Pisanti, C., Placidi, P., Pullia, M., Ramello, L., Reidel, C., Ridolfi, R., Sabatini, L., Salvi, L., Sanelli, C., Sarti, A., Sato, O., Savazzi, S., Scavarda, L., Schiavi, A., Schuy, C., Scifoni, E., Servoli, L., Silvestre, G., Sitta, M., Spighi, R., Spiriti, E., Tioukov, V., Tomassini, S., Tommasino, F., Toppi, M., Trigilio, A., Traini, G., Ubaldi, G., Valetti, A., Vanstalle, M., Villa, M., Weber, U., Zarrella, R., Zoccoli, A., and Muraro, S.

Published
2025
Full Text
View/download PDF

14. THE ALLS CHAMBER: TECHNICAL ISSUES AND PRACTICAL SOLUTIONS FOR THE REALIZATION OF A NEW ONLINE DOSIMETER FOR FLASH RADIOTHERAPY

Author

Montefiori, M., primary, Baldini, L., additional, Bisogni, M.G., additional, Capaccioli, S., additional, Esther, C., additional, Del Sarto, D., additional, Felici, G., additional, Lucchesi, L., additional, Massa, M., additional, Masturzo, L., additional, Moggi, A., additional, Morrocchi, M., additional, Paiar, F., additional, Pensavalle, J.H., additional, Pilo, F., additional, Sgrò, C., additional, and Di Martino, F., additional

Published
2023
Full Text
View/download PDF

15. Monte Carlo simulation tool for online treatment monitoring in hadrontherapy with in-beam PET: A patient study

Author

Fiorina, E., Ferrero, V., Pennazio, F., Baroni, G., Battistoni, G., Belcari, N., Cerello, P., Camarlinghi, N., Ciocca, M., Del Guerra, A., Donetti, M., Ferrari, A., Giordanengo, S., Giraudo, G., Mairani, A., Morrocchi, M., Peroni, C., Rivetti, A., Da Rocha Rolo, M.D., Rossi, S., Rosso, V., Sala, P., Sportelli, G., Tampellini, S., Valvo, F., Wheadon, R., and Bisogni, M.G.

Published
2018
Full Text
View/download PDF

26. PD-0897 In vivo verification by detection of charged fragments in carbon ion therapy treatments at CNAO

Author

De Simoni, M., primary, Baroni, G., additional, Battistoni, G., additional, Bisogni, M.G., additional, Cerello, P., additional, Ciocca, M., additional, Donetti, M., additional, Dong, Y., additional, Embriaco, A., additional, Ferrero, V., additional, Fiorina, E., additional, Fischetti, M., additional, Franciosini, G., additional, Giacchi, G., additional, Kraan, A., additional, Luongo, C., additional, Maggi, M., additional, Mancini Terracciano, C., additional, Marafini, M., additional, Malekzadeh, E., additional, Mattei, I., additional, Mazzoni, E., additional, Mirandola, A., additional, Morrocchi, M., additional, Muraro, S., additional, Patera, V., additional, Pennazio, F., additional, Schiavi, A., additional, Solfaroli-Camillucci, E., additional, Sportelli, G., additional, Tampellini, S., additional, Toppi, M., additional, Traini, G., additional, Trigilio, A., additional, Vischioni, B., additional, Vitolo, V., additional, Carlotti, D., additional, De Gregorio, A., additional, and Sarti, A., additional

Published
2022
Full Text
View/download PDF

32. Characterization of a single photon counting imaging system by transfer function analysis

Author

Bisogni, M.G., Carpentieri, C., Delogu, P., Fantacci, M.E., Novelli, M., Quattrocchi, M., Retico, A., Rosso, V., and Stefanini, A.

Subjects
Imaging systems -- Research, Modulation (Electronics) -- Research, Photons -- Research, Quantum electronics -- Research, Imaging technology, Business, Electronics, Electronics and electrical industries
Abstract

A method to quantitatively evaluate the performances of a radiographic detection system consists in measuring the contrast, noise and modulation transfer functions. These functions have been evaluated for a digital radiographic system based on a single photon counting pixel detector. The X-ray detector is a Silicon sensor with one side segmented in a matrix of 256 by 256 square contacts with a pitch of 55 [micro]m. The active area is about 2 [cm.sup.2] The sensor is connected to the Medipix2 read-out chip by bump-bonding. As X-ray source we have used a tube for general radiography. To reproduce the conditions of a radiographic examination, a 4 cm thick lucite block positioned above the detector has been used to simulate a tissue sample. To study the Contrast Transfer Function we have measured the contrast of an 1 mm thick lead slab with respect to the background. To evaluate the scattering contribution from the lucite, the measurements have been performed with and without a collimator placed at the beam exit. To assess the efficiency and noise transfer properties, we have measured the Detective Quantum Efficiency (DQE) of the detector as a function of the tube voltage. The Modulation Transfer Function has been measured applying the slit method for different conditions of tube voltage and energy threshold. Index Terms--Contrast transfer function (CTF), detective quantum efficiency (DQE), digital radiography, medical imaging equipment, modulation transfer function (MTF), solid-state detectors.

Published
2007

37. Performance of an imaging system based on silicon pixel detectors of different thickness

Author

Bisogni, M.G., Boscardin, M., Bulajic, D., Dalla Betta, G.F., Delogu, P., Fantacci, M.E., Novelli, M., Piemonte, C., Quattrocchi, M., Rosso, V., Stefanini, A., and Zorzi, N.

Subjects
Imaging systems -- Properties, Spectrum analysis -- Analysis, Spatial analysis (Statistics), Imaging technology, Business, Electronics, Electronics and electrical industries
Abstract

To compare the characteristics of imaging systems based on pixel detectors of different thickness, we have measured the respective imaging capabilities, spatial resolution and spectroscopic characteristics. Each system consists of a single photon counting chip, developed in the framework of the Medipix Collaboration, bump bonded to a silicon detector. The detector is a matrix of 64 x 64 square pixels, with 170 [micro]m pitch and thickness ranging from 300 to 800 [micro]m. As expected, the intrinsic detection efficiency increases with the detector thickness; nevertheless the spatial resolution can be affected by a charge sharing mechanism between adjacent pixels due to charge diffusion. The aim of the work reported in this paper is to demonstrate that, optimizing the settings of the image systems, we can increase the detection efficiency without losing in spatial resolution.

Published
2005

38. A Medipix2-based imaging system for digital mammography with silicon pixel detectors

Author

Bisogni, M.G., Delogu, P., Fantacci, M.E., Mettivier, G., Montesi, M.C., Novelli, M., Quattrocchi, M., Rosso, V., Russo, P., and Stefanini, A.

Subjects
Mammography -- Research, Business, Electronics, Electronics and electrical industries
Abstract

We present the first tests of a digital imaging system based on a silicon pixel detector bump bonded to an integrated circuit operating in single-photon counting mode. The X-ray sensor is a 300-[micro]m-thick silicon, 14 x 14 [mm.sup.2] sensitive area, upon which a matrix of 256 x 256 (65536) square pixel, 55 [micro]m in side, has been built. The readout chip, named MEDIPIX2, has been developed at CERN within the MEDIPIX2 collaboration and it is composed by a matrix of 65536 readout channels exactly with the same geometry of the detector. The spatial resolution properties of the system have been assessed by measuring the square-wave resolution function and the first images of a standard mammographic phantom were acquired using a radiographic tube in the clinical irradiation condition. Index Terms--Mammography, signal-to-noise ratio (SNR), silicon pixel detector, single-photon counting chip, square-wave resolution function (SWRF).

Published
2004

40. Experimental study of compton scattering reduction in digital mammographic imaging

Author

Amendolia, S.R., Bisogni, M.G., Delogu, P., Fantacci, M.E., Novelli, M., Oliva, P., Quattrocchi, M., Rosso, V., Stefanini, A., and Zucca, Sergio

Subjects
Mammography -- Research, Compton effect -- Analysis, Pixels -- Measurement, Photons -- Analysis, Business, Electronics, Electronics and electrical industries
Abstract

In mammography, the first cause of image contrast reduction arises from the photons scattered inside the examined organ. The amount of Compton scattering strongly depends on the irradiation area and on the distance between the organ and the X-ray detector. We have experimentally evaluated how these geometrical conditions affect the scattering fraction. Our experimental setup includes a single photon counting device based on a silicon pixel detector as X-ray sensor, a lucite cylinder to simulate the breast tissue, and a lead collimator to define the irradiation area. We have evaluated the contrast and the signal-to-noise ratio for images acquired in different conditions. Index Terms--Contrast, mammography, pixel detector, scattered photons, signal-to-noise ratio (SNR), single photon counting chip.

Published
2002

41. Charge identification performance of a ΔE-TOF detector prototype for the FOOT experiment

Author

Kraan, A.C., primary, Battistoni, G., additional, Belcari, N., additional, Camarlinghi, N., additional, Carra, P., additional, Ciarrocchi, E., additional, Del Guerra, A., additional, Francesconi, M., additional, Galli, L., additional, Moggi, A., additional, Morrocchi, M., additional, Pullia, M., additional, Rosso, V., additional, Sportelli, G., additional, and Bisogni, M.G., additional

Published
2020
Full Text
View/download PDF

42. Design and construction of a new detector to measure ultra-low radioactive-isotope contamination of argon

Author

Aalseth, C.E., primary, Abdelhakim, S., additional, Acerbi, F., additional, Agnes, P., additional, Ajaj, R., additional, Albuquerque, I.F.M., additional, Alexander, T., additional, Alici, A., additional, Alton, A.K., additional, Amaudruz, P., additional, Ameli, F., additional, Anstey, J., additional, Antonioli, P., additional, Arba, M., additional, Arcelli, S., additional, Ardito, R., additional, Arnquist, I.J., additional, Arpaia, P., additional, Asner, D.M., additional, Asunskis, A., additional, Ave, M., additional, Back, H.O., additional, Barbaryan, V., additional, Olmedo, A. Barrado, additional, Batignani, G., additional, Bisogni, M.G., additional, Bocci, V., additional, Bondar, A., additional, Bonfini, G., additional, Bonivento, W., additional, Borisova, E., additional, Bottino, B., additional, Boulay, M.G., additional, Bunker, R., additional, Bussino, S., additional, Buzulutskov, A., additional, Cadeddu, M., additional, Cadoni, M., additional, Caminata, A., additional, Canci, N., additional, Candela, A., additional, Cantini, C., additional, Caravati, M., additional, Cariello, M., additional, Carnesecchi, F., additional, Carpinelli, M., additional, Castellani, A., additional, Castello, P., additional, Catalanotti, S., additional, Cataudella, V., additional, Cavalcante, P., additional, Cavazza, D., additional, Cavuoti, S., additional, Cebrian, S., additional, Ruiz, J.M. Cela, additional, Celano, B., additional, Cereseto, R., additional, Cheng, W., additional, Chepurnov, A., additional, Cicalò, C., additional, Cifarelli, L., additional, Citterio, M., additional, Coccetti, F., additional, Cocco, A.G., additional, Cocco, V., additional, Colocci, M., additional, Consiglio, L., additional, Cossio, F., additional, Covone, G., additional, Crivelli, P., additional, D'Antone, I., additional, D'Incecco, M., additional, D'Urso, D., additional, Rolo, M.D. Da Rocha, additional, Dadoun, O., additional, Daniel, M., additional, Davini, S., additional, Candia, A. De, additional, Cecco, S. De, additional, Deo, M. De, additional, Falco, A. De, additional, Filippis, G. De, additional, Gruttola, D. De, additional, Guido, G. De, additional, Rosa, G. De, additional, Dellacasa, G., additional, Demontis, P., additional, DePaquale, S., additional, Derbin, A.V., additional, Devoto, A., additional, Eusanio, F. Di, additional, Noto, L. Di, additional, Pietro, G. Di, additional, Stefano, P. Di, additional, Dionisi, C., additional, Dolganov, G., additional, Dordei, F., additional, Downing, M., additional, Edalatfar, F., additional, Empl, A., additional, Diaz, M. Fernandez, additional, Ferri, A., additional, Filip, C., additional, Fiorillo, G., additional, Fomenko, K., additional, Franceschi, A., additional, Franco, D., additional, Froudakis, G.E., additional, Gabriele, F., additional, Gabrieli, A., additional, Galbiati, C., additional, Garbini, M., additional, Abia, P. Garcia, additional, Fora, D. Gascón, additional, Gendotti, A., additional, Ghiano, C., additional, Ghisi, A., additional, Giagu, S., additional, Giampa, P., additional, Giampaolo, R.A., additional, Giganti, C., additional, Giorgi, M.A., additional, Giovanetti, G.K., additional, Gligan, M.L., additional, Gola, A., additional, Gorchakov, O., additional, Grab, M., additional, Diaz, R. Graciani, additional, Granato, F., additional, Grassi, M., additional, Grate, J.W., additional, Grigoriev, G.Y., additional, Grobov, A., additional, Gromov, M., additional, Guan, M., additional, Guerra, M.B.B., additional, Guerzoni, M., additional, Gulino, M., additional, Haaland, R.K., additional, Hackett, B.R., additional, Hallin, A., additional, Harrop, B., additional, Hoppe, E.W., additional, Horikawa, S., additional, Hosseini, B., additional, Hubaut, F., additional, Humble, P., additional, Hungerford, E.V., additional, Ianni, An., additional, Ilyasov, A., additional, Ippolito, V., additional, Jillings, C., additional, Keeter, K., additional, Kendziora, C.L., additional, Kim, S., additional, Kochanek, I., additional, Kondo, K., additional, Kopp, G., additional, Korablev, D., additional, Korga, G., additional, Kubankin, A., additional, Kugathasan, R., additional, Kuss, M., additional, Kuźniak, M., additional, Commara, M. La, additional, Delfa, L. La, additional, Lai, M., additional, Langrock, S., additional, Lebois, M., additional, Lehnert, B., additional, Levashko, N., additional, Li, X., additional, Liqiang, Q., additional, Lissia, M., additional, Lodi, G.U., additional, Longo, G., additional, Manzano, R. López, additional, Lussana, R., additional, Luzzi, L., additional, Machado, A.A., additional, Machulin, I.N., additional, Mandarano, A., additional, Mapelli, L., additional, Marcante, M., additional, Margotti, A., additional, Mari, S.M., additional, Mariani, M., additional, Maricic, J., additional, Marinelli, M., additional, Marras, D., additional, Martínez, M., additional, Morales, J.J. Martínez, additional, Rojas, A.D. Martinez, additional, Martoff, C.J., additional, Mascia, M., additional, Mason, J., additional, Masoni, A., additional, Mazzi, A., additional, McDonald, A.B., additional, Messina, A., additional, Meyers, P.D., additional, Miletic, T., additional, Milincic, R., additional, Moggi, A., additional, Moioli, S., additional, Monroe, J., additional, Morrocchi, M., additional, Mroz, T., additional, Mu, W., additional, Muratova, V.N., additional, Murphy, S., additional, Muscas, C., additional, Musico, P., additional, Nania, R., additional, Napolitano, T., additional, Agasson, A. Navrer, additional, Nessi, M., additional, Nikulin, I., additional, Oleinik, A., additional, Oleynikov, V., additional, Orsini, M., additional, Ortica, F., additional, Pagani, L., additional, Pallavicini, M., additional, Palmas, S., additional, Pandola, L., additional, Pantic, E., additional, Paoloni, E., additional, Paternoster, G., additional, Pazzona, F., additional, Peeters, S., additional, Pegoraro, P.A., additional, Pelczar, K., additional, Pellegrini, L.A., additional, Pellegrino, C., additional, Pelliccia, N., additional, Perotti, F., additional, Pesudo, V., additional, Picciau, E., additional, Piemonte, C., additional, Pietropaolo, F., additional, Pocar, A., additional, Pollmann, T.R., additional, Portaluppi, D., additional, Poudel, S.S., additional, Pralavorio, P., additional, Price, D., additional, Radics, B., additional, Raffaelli, F., additional, Ragusa, F., additional, Razeti, M., additional, Razeto, A., additional, Regazzoni, V., additional, Regenfus, C., additional, Renshaw, A.L., additional, Rescia, S., additional, Rescigno, M., additional, Retiere, F., additional, Rignanese, L.P., additional, Rivetti, A., additional, Romani, A., additional, Romero, L., additional, Rossi, N., additional, Rubbia, A., additional, Sablone, D., additional, Sala, P., additional, Salatino, P., additional, Samoylov, O., additional, García, E. Sánchez, additional, Sanfilippo, S., additional, Sant, M., additional, Santone, D., additional, Santorelli, R., additional, Savarese, C., additional, Scapparone, E., additional, Schlitzer, B., additional, Scioli, G., additional, Segreto, E., additional, Seifert, A., additional, Semenov, D.A., additional, Shchagin, A., additional, Sheshukov, A., additional, Siddhanta, S., additional, Simeone, M., additional, Singh, P.N., additional, Skensved, P., additional, Skorokhvatov, M.D., additional, Smirnov, O., additional, Sobrero, G., additional, Sokolov, A., additional, Sotnikov, A., additional, Stainforth, R., additional, Steri, A., additional, Stracka, S., additional, Strickland, V., additional, Suffritti, G.B., additional, Sulis, S., additional, Suvorov, Y., additional, Szelc, A.M., additional, Tartaglia, R., additional, Testera, G., additional, Thorpe, T., additional, Tonazzo, A., additional, Tosi, A., additional, Tuveri, M., additional, Unzhakov, E.V., additional, Usai, G., additional, Vacca, A., additional, Vázquez-Jáuregui, E., additional, Verducci, M., additional, Viant, T., additional, Viel, S., additional, Villa, F., additional, Vishneva, A., additional, Vogelaar, R.B., additional, Wada, M., additional, Wahl, J., additional, Walding, J.J., additional, Wang, H., additional, Wang, Y., additional, Westerdale, S., additional, Wheadon, R.J., additional, Williams, R., additional, Wilson, J., additional, Wojcik, Marcin, additional, Wojcik, Mariusz, additional, Wu, S., additional, Xiao, X., additional, Yang, C., additional, Ye, Z., additional, Zuffa, M., additional, and Zuzel, G., additional

Published
2020
Full Text
View/download PDF

43. SI-GaAs detectors with epitaxial junction

Author

Cola, A., Quaranta, F., Fucci, R., Melone, G., Rossi, R., Passaseo, A., Conti, M., Mettivier, G., Russo, P., Bisogni, M.G., and Fantacci, M.E.

Subjects
Gallium arsenide semiconductors -- Usage, Detectors -- Design and construction, Nuclear counters -- Design and construction, Business, Electronics, Electronics and electrical industries
Abstract

High leakage currents and incomplete charge collection limit the performance of detectors obtained from bulk semi-insulating (SI) GaAs. In this contest, a crucial role is played by the electron limiting contact. We have investigated the effect of an epitaxial p-type layer deposited on the semi-insulating substrate in place of the usual Schottky contact. Electrical characterization evidences an effect of the p-layer only at low voltages, but radiation detection experiments show an improvement of the charge collection efficiency, which is function of the doping level of the p-layer. In particular both [Alpha] and x irradiations give evidence of gain mechanisms in the collected charge. From these results, the strong relation between the structure of the electron-blocking interface and the charge collection properties of these detectors comes out.

Published
1999

44. Irradiation of optically activated SI-GaAs high-voltage switches with low and high energy protons

Author

Bertolucci, E., Conti, M., Mettivier, G., Russo, P., Bisogni, M.G., Bottigli, U., Fantacci, M.E., Stefanini, A., Cola, A., Quaranta, F., Vasanelli, L., and Stefanini, G.

Subjects
Gallium arsenide semiconductors -- Research, Irradiation -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Semi-Insulating Gallium Arsenide (SI-GaAs) devices have been tested for radiation hardness with 3-4 MeV or 24 GeV proton beams. These devices can be operated in dc mode as optically activated electrical switches up to 1 kV. Both single switches (vertical Schottky diodes) and multiple (8) switches (planar devices) have been studied, by analyzing their current-voltage (I-V) reverse characteristics in the dark and under red light illumination, both before and after irradiation. We propose to use them in the system of high-voltage (-600 V) switches for the microstrip gas chambers for the CMS experiment at CERN. Low energy protons (3-4 MeV) were used in order to produce a surface damage below the Schottky contact: their fluence (up to 2.6x[10.sup.15]/[cm.sup.2]) gives a high-dose irradiation. The high energy proton irradiation (energy: 24 GeV, fluence: 1.1x[10.sup.14] p/[cm.sup.2]) reproduced a ten years long proton exposure of the devices in CMS experiment conditions. For low energy irradiation, limited changes of the I-V curves in the dark have been observed, with at most a fourfold increase of the leakage current: after exposure, however, the breakdown voltage decreases significantly. For high energy irradiation, we observed - for the vertical Schottky diodes biased at -600 V - an increase of the leakage current and a reduction of the photocurrent after irradiation, with respect to pre-irradiation conditions. For these diodes, the reduction of the photocurrent/dark current ratio was 25:1. At the same proton energy, an analogous behaviour was shown by the planar devices, but after irradiation the current gain may reduce over three orders of magnitude.

Published
1999

47. Use of silicon and GaAs pixel detectors for digital autoradiography

Author

Amendolia, S.R., Beccherle, R., Bertolucci, E., Bisogni, M.G., Bottigli, U., Campbell, M., Chesi, E., Ciocci, M.A., Conti, M., Da Via, C., Del Guerra, A., D'Auria, S., Fantacci, M.E., Gambaccini, M., Grossi, G., Heijne, E., Mancini, E., Marchesini, R., Middelkamp, P., O'Shea, V., Randaccio, P., Romeo, N., Rosso, V., Russo, P., Scharfetter, L., Smith, K., Snoeys, W., and Stefanini, A.

Subjects
Silicon diodes -- Usage, Gallium arsenide -- Usage, Autoradiography -- Equipment and supplies, Business, Electronics, Electronics and electrical industries
Abstract

Solid state detectors made of Si (4.8x8 [mm.sup.2]) and GaAs (6.4x8 [mm.sup.2]) pixel matrices bump-bonded to the Omega2 and Omega3 electronic read-out systems, developed at CERN for H.E.P. experiments, have been used to obtain autoradiographic images of clusters of human epithelial cells and DNA fragments separated via electrophoresis, both labeled with 32p. The system has shown a good minimum detectable activity per unit area of 2. [10.sup.-4] cps [mm.sup.-2], and has proved linear for count rate in the range 0.2-20 cps, typical of autoradiography. The pixel dimensions are 75x500 [[[micro]meter].sup.2] (Si-Omega2) and 50x500 [[[micro]meter].sup.2] (GaAs-Omega3), respectively. We are able to clearly localize clusters of cells which have incorporated the radioactive tracer and DNA fragments on an electrophoretic gel on paper (blots).

Published
1997

48. A study for the detection of ionizing particles with phototransistors on thick high-resistivity silicon substrates

Author

Batignani, G., Angelini, C., Bisogni, M.G., Boscardin, M., Bettarini, S., Bondioli, M., Bosisio, L., Bucci, F., Calderini, G., Carpinelli, M., Ciacchi, M., Dalla Betta, G.F., Dittongo, S., Forti, F., Giorgi, M.A., Gregori, P., Han, D.J., Manfredi, P.F., Manghisoni, M., Marchiori, G., Neri, N., Novelli, M., Paoloni, E., Piemonte, C., Rachevskaia, I., Rama, M., Ratti, L., Re, V., Rizzo, G., Ronchin, S., Rosso, V., Simi, G., Speziali, V., Stefanini, A., and Zorzi, N.

Published
2004
Full Text
View/download PDF

50. A prototype for a mammographic head and related developments

Author

Amendolia, S.R., Annovazzi, A., Bigongiari, A., Bisogni, M.G., Catarsi, F., Cesqui, F., Cetronio, A., Chianella, M., Delogu, P., Fantacci, M.E., Galimberti, D., Lanzieri, C., Lavanga, S., Novelli, M., Passuello, G., Pieracci, M., Quattrocchi, M., Rosso, V., Stefanini, A., Testa, A., and Venturelli, L.

Published
2004
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results