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  1. Article ; Online: Quantum Efficiency Measurement and Modeling of Silicon Sensors Optimized for Soft X-ray Detection.

    Carulla, Maria / Barten, Rebecca / Baruffaldi, Filippo / Bergamaschi, Anna / Borghi, Giacomo / Boscardin, Maurizio / Brückner, Martin / Butcher, Tim A / Centis Vignali, Matteo / Dinapoli, Roberto / Ebner, Simon / Ficorella, Francesco / Fröjdh, Erik / Greiffenberg, Dominic / Hammad Ali, Omar / Hasanaj, Shqipe / Heymes, Julian / Hinger, Viktoria / King, Thomas /
    Kozlowski, Pawel / Lopez Cuenca, Carlos / Mezza, Davide / Moustakas, Konstantinos / Mozzanica, Aldo / Paternoster, Giovanni / Paton, Kirsty A / Ronchin, Sabina / Ruder, Christian / Schmitt, Bernd / Sieberer, Patrick / Thattil, Dhanya / Vogelsang, Konrad / Xie, Xiangyu / Zhang, Jiaguo

    Sensors (Basel, Switzerland)

    2024  Volume 24, Issue 3

    Abstract: Hybrid pixel detectors have become indispensable at synchrotron and X-ray free-electron laser facilities thanks to their large dynamic range, high frame rate, low noise, and large area. However, at energies below 3 keV, the detector performance is often ... ...

    Abstract Hybrid pixel detectors have become indispensable at synchrotron and X-ray free-electron laser facilities thanks to their large dynamic range, high frame rate, low noise, and large area. However, at energies below 3 keV, the detector performance is often limited because of the poor quantum efficiency of the sensor and the difficulty in achieving single-photon resolution due to the low signal-to-noise ratio. In this paper, we address the quantum efficiency of silicon sensors by refining the design of the entrance window, mainly by passivating the silicon surface and optimizing the dopant profile of the n
    Language English
    Publishing date 2024-01-31
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s24030942
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Performance of LGAD strip detectors for particle counting of therapeutic proton beams.

    Monaco, Vincenzo / Ali, Omar Hammad / Bersani, Davide / Abujami, Mohammed / Boscardin, Maurizio / Cartiglia, Nicolò / Betta, Gian Franco Dalla / Data, Emanuele / Donetti, Marco / Ferrero, Marco / Ficorella, Francesco / Giordanengo, Simona / Villarreal, Oscar Ariel Marti / Milian, Felix Mas / Mohammadian-Behbahani, Mohammad-Reza / Olivares, Diango Montalvan / Pullia, Marco / Tommasino, Francesco / Verroi, Enrico /
    Vignati, Anna / Cirio, Roberto / Sacchi, Roberto

    Physics in medicine and biology

    2023  Volume 68, Issue 23

    Abstract: ... ...

    Abstract Objective
    MeSH term(s) Radiometry/methods ; Protons ; Silicon ; Proton Therapy ; Cyclotrons
    Chemical Substances Protons ; Silicon (Z4152N8IUI)
    Language English
    Publishing date 2023-11-29
    Publishing country England
    Document type Journal Article
    ZDB-ID 208857-5
    ISSN 1361-6560 ; 0031-9155
    ISSN (online) 1361-6560
    ISSN 0031-9155
    DOI 10.1088/1361-6560/ad02d5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 199: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  3. Article ; Online: Optimization of a Low-Power Chemoresistive Gas Sensor: Predictive Thermal Modelling and Mechanical Failure Analysis.

    Gaiardo, Andrea / Novel, David / Scattolo, Elia / Crivellari, Michele / Picciotto, Antonino / Ficorella, Francesco / Iacob, Erica / Bucciarelli, Alessio / Petti, Luisa / Lugli, Paolo / Bagolini, Alvise

    Sensors (Basel, Switzerland)

    2021  Volume 21, Issue 3

    Abstract: The substrate plays a key role in chemoresistive gas sensors. It acts as mechanical support for the sensing material, hosts the heating element and, also, aids the sensing material in signal transduction. In recent years, a significant improvement in the ...

    Abstract The substrate plays a key role in chemoresistive gas sensors. It acts as mechanical support for the sensing material, hosts the heating element and, also, aids the sensing material in signal transduction. In recent years, a significant improvement in the substrate production process has been achieved, thanks to the advances in micro- and nanofabrication for micro-electro-mechanical system (MEMS) technologies. In addition, the use of innovative materials and smaller low-power consumption silicon microheaters led to the development of high-performance gas sensors. Various heater layouts were investigated to optimize the temperature distribution on the membrane, and a suspended membrane configuration was exploited to avoid heat loss by conduction through the silicon bulk. However, there is a lack of comprehensive studies focused on predictive models for the optimization of the thermal and mechanical properties of a microheater. In this work, three microheater layouts in three membrane sizes were developed using the microfabrication process. The performance of these devices was evaluated to predict their thermal and mechanical behaviors by using both experimental and theoretical approaches. Finally, a statistical method was employed to cross-correlate the thermal predictive model and the mechanical failure analysis, aiming at microheater design optimization for gas-sensing applications.
    Language English
    Publishing date 2021-01-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s21030783
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  4. Book ; Online: High-Precision 4D Tracking with Large Pixels using Thin Resistive Silicon Detectors

    Arcidiacono, R. / Borghi, G. / Boscardin, M. / Cartiglia, N. / Vignali, M. Centis / Costa, M. / Betta, G-F. Dalla / Ferrero, M. / Ficorella, F. / Gioachin, G. / Lanteri, L. / Mandurrino, M. / Menzio, L. / Mulargia, R. / Pancheri, L. / Paternoster, G. / Rojas, A. / Sadrozinski, H-F W. / Seiden, A. /
    Siviero, F. / Sola, V. / Tornago, M.

    2022  

    Abstract: The basic principle of operation of silicon sensors with resistive read-out is built-in charge sharing. Resistive Silicon Detectors (RSD, also known as AC-LGAD), exploiting the signals seen on the electrodes surrounding the impact point, achieve ... ...

    Abstract The basic principle of operation of silicon sensors with resistive read-out is built-in charge sharing. Resistive Silicon Detectors (RSD, also known as AC-LGAD), exploiting the signals seen on the electrodes surrounding the impact point, achieve excellent space and time resolutions even with very large pixels. In this paper, a TCT system using a 1064 nm picosecond laser is used to characterize sensors from the second RSD production at the Fondazione Bruno Kessler. The paper first introduces the parametrization of the errors in the determination of the position and time coordinates in RSD, then outlines the reconstruction method, and finally presents the results. Three different pixel sizes are used in the analysis: 200 x 340, 450 x 450, and 1300 x 1300 microns^2. At gain = 30, the 450 x 450 microns^2 pixel achieves a time jitter of 20 ps and a spatial resolution of 15 microns concurrently, while the 1300 x 1300 microns^2 pixel achieves 30 ps and 30 micron, respectively. The implementation of cross-shaped electrodes improves considerably the response uniformity over the pixel surface.

    Comment: 28 pages, 23 figures submitted to NIMA
    Keywords Physics - Instrumentation and Detectors ; High Energy Physics - Experiment
    Subject code 621
    Publishing date 2022-11-24
    Publishing country us
    Document type Book ; Online
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  5. Book ; Online: Silicon Sensors for Future Particle Trackers

    Cartiglia, N. / Arcidiacono, R. / Borghi, G. / Boscardin, M. / Costa, M. / Galloway, Z. / Fausti, F. / Ferrero, M. / Ficorella, F. / Mandurrino, M. / Mazza, S. / Olave, E. J. / Paternoster, G. / Siviero, F. / Sadrozinski, H. F-W. / Sola, V. / Staiano, A. / Seiden, A. / Tornago, M. /
    Zhao, Y.

    2020  

    Abstract: Several future high-energy physics facilities are currently being planned. The proposed projects include high energy $e^+ e^-$ circular and linear colliders, hadron colliders and muon colliders, while the Electron-Ion Collider (EIC) has already been ... ...

    Abstract Several future high-energy physics facilities are currently being planned. The proposed projects include high energy $e^+ e^-$ circular and linear colliders, hadron colliders and muon colliders, while the Electron-Ion Collider (EIC) has already been approved for construction at the Brookhaven National Laboratory. Each proposal has its own advantages and disadvantages in term of readiness, cost, schedule and physics reach, and each proposal requires the design and production of specific new detectors. This paper first presents the performances required to the future silicon tracking systems at the various new facilities, and then it illustrates a few possibilities for the realization of such silicon trackers. The challenges posed by the future facilities require a new family of silicon detectors, where features such as impact ionization, radiation damage saturation, charge sharing, and analog readout are exploited to meet these new demands.
    Keywords Physics - Instrumentation and Detectors ; High Energy Physics - Experiment
    Subject code 621
    Publishing date 2020-03-31
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Book ; Online: Resistive AC-Coupled Silicon Detectors

    Tornago, M. / Arcidiacono, R. / Cartiglia, N. / Costa, M. / Ferrero, M. / Mandurrino, M. / Siviero, F. / Sola, V. / Staiano, A. / Apresyan, A. / Di Petrillo, K. / Heller, R. / Los, S. / Borghi, G. / Boscardin, M. / Betta, G-F Dalla / Ficorella, F. / Pancheri, L. / Paternoster, G. /
    Sadrozinski, H. / Seiden, A.

    principles of operation and first results from a combined analysis of beam test and laser data

    2020  

    Abstract: This paper presents the principles of operation of Resistive AC-Coupled Silicon Detectors (RSDs) and measurements of the temporal and spatial resolutions using a combined analysis of laser and beam test data. RSDs are a new type of n-in-p silicon sensor ... ...

    Abstract This paper presents the principles of operation of Resistive AC-Coupled Silicon Detectors (RSDs) and measurements of the temporal and spatial resolutions using a combined analysis of laser and beam test data. RSDs are a new type of n-in-p silicon sensor based on the Low-Gain Avalanche Diode (LGAD) technology, where the $n^+$ implant has been designed to be resistive, and the read-out is obtained via AC-coupling. The truly innovative feature of RSD is that the signal generated by an impinging particle is shared isotropically among multiple read-out pads without the need for floating electrodes or an external magnetic field. Careful tuning of the coupling oxide thickness and the $n^+$ doping profile is at the basis of the successful functioning of this device. Several RSD matrices with different pad width-pitch geometries have been extensively tested with a laser setup in the Laboratory for Innovative Silicon Sensors in Torino, while a smaller set of devices have been tested at the Fermilab Test Beam Facility with a 120 GeV/c proton beam. The measured spatial resolution ranges between $2.5\; \mu m$ for 70-100 pad-pitch geometry and $17\; \mu m$ with 200-500 matrices, a factor of 10 better than what is achievable in binary read-out ($bin\; size/ \sqrt{12}$). Beam test data show a temporal resolution of $\sim 40\; ps$ for 200-$\mu m$ pitch devices, in line with the best performances of LGAD sensors at the same gain.

    Comment: 34 pages, 33 figures
    Keywords Physics - Instrumentation and Detectors
    Subject code 621
    Publishing date 2020-07-18
    Publishing country us
    Document type Book ; Online
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  7. Article ; Online: Trace-element XAFS sensitivity: a stress test for a new XRF multi-detector.

    Carlomagno, Ilaria / Antonelli, Matias / Aquilanti, Giuliana / Bellutti, Pierluigi / Bertuccio, Giuseppe / Borghi, Giacomo / Cautero, Giuseppe / Cirrincione, Daniela / de Giudici, Giovanni / Ficorella, Francesco / Gandola, Massimo / Giuressi, Dario / Medas, Daniela / Mele, Filippo / Menk, Ralf H / Olivi, Luca / Orzan, Giulio / Picciotto, Antonino / Podda, Francesca /
    Rachevski, Alexandre / Rashevskaya, Irina / Stebel, Luigi / Vacchi, Andrea / Zampa, Gianluigi / Zampa, Nicola / Zorzi, Nicola / Meneghini, Carlo

    Journal of synchrotron radiation

    2021  Volume 28, Issue Pt 6, Page(s) 1811–1819

    Abstract: X-ray absorption fine-structure (XAFS) spectroscopy can assess the chemical speciation of the elements providing their coordination and oxidation state, information generally hidden to other techniques. In the case of trace elements, achieving a good ... ...

    Abstract X-ray absorption fine-structure (XAFS) spectroscopy can assess the chemical speciation of the elements providing their coordination and oxidation state, information generally hidden to other techniques. In the case of trace elements, achieving a good quality XAFS signal poses several challenges, as it requires high photon flux, counting statistics and detector linearity. Here, a new multi-element X-ray fluorescence detector is presented, specifically designed to probe the chemical speciation of trace 3d elements down to the p.p.m. range. The potentialities of the detector are presented through a case study: the speciation of ultra-diluted elements (Fe, Mn and Cr) in geological rocks from a calcareous formation related to the dispersal processes from Ontong (Java) volcanism (mid-Cretaceous). Trace-elements speciation is crucial in evaluating the impact of geogenic and anthropogenic harmful metals on the environment, and to evaluate the risks to human health and ecosystems. These results show that the new detector is suitable for collecting spectra of 3d elements in trace amounts in a calcareous matrix. The data quality is high enough that quantitative data analysis could be performed to determine their chemical speciation.
    MeSH term(s) Ecosystem ; Exercise Test ; Humans ; Metals ; Trace Elements/analysis ; X-Ray Absorption Spectroscopy
    Chemical Substances Metals ; Trace Elements
    Language English
    Publishing date 2021-10-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2021413-3
    ISSN 1600-5775 ; 0909-0495
    ISSN (online) 1600-5775
    ISSN 0909-0495
    DOI 10.1107/S1600577521008857
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  8. Book ; Online: Optimization of the Gain Layer Design of Ultra-Fast Silicon Detectors

    Siviero, Federico / Arcidiacono, Roberta / Borghi, Giacomo / Boscardin, Maurizio / Cartiglia, Nicolo / Vignali, Matteo Centis / Costa, Marco / Betta, Gian Franco Dalla / Ferrero, Marco / Ficorella, Francesco / Gioachin, Giulia / Mandurrino, Marco / Mazza, Simone / Menzio, Luca / Pancheri, Lucio / Paternoster, Giovanni / Sadrozinski, Hartmut F. W. / Seiden, Abraham / Sola, Valentina /
    Tornago, Marta

    2021  

    Abstract: In the past few years, the need of measuring accurately the spatial and temporal coordinates of the particles generated in high-energy physics experiments has spurred a strong R\&D in the field of silicon sensors. Within these research activities, the so- ...

    Abstract In the past few years, the need of measuring accurately the spatial and temporal coordinates of the particles generated in high-energy physics experiments has spurred a strong R\&D in the field of silicon sensors. Within these research activities, the so-called Ultra-Fast Silicon Detectors (UFSDs), silicon sensors optimized for timing based on the Low-Gain Avalanche Diode (LGAD) design, have been proposed and adopted by the CMS and ATLAS collaborations for their respective timing layers. The defining feature of the Ultra-Fast Silicon Detectors (UFSDs) is the internal multiplication mechanism, determined by the gain layer design. In this paper, the performances of several types of gain layers, measured with a telescope instrumented with a $^{90}$Sr $\beta$-source, are reported and compared. The measured sensors are produced by Fondazione Bruno Kessler (FBK) and Hamamatsu Photonics (HPK). The sensor yielding the best performance, both when new and irradiated, is an FBK 45\mum-thick sensor with a carbonated deep gain implant, where the carbon and the boron implants are annealed concurrently with a low thermal load. This sensor is able to achieve a time resolution of 40~ps up to a radiation fluence of~\fluence{2.5}{15}, delivering at least 5~fC of charge.

    Comment: v3 revised version as requested by Editor
    Keywords Physics - Instrumentation and Detectors ; High Energy Physics - Experiment
    Subject code 621 ; 620
    Publishing date 2021-12-01
    Publishing country us
    Document type Book ; Online
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  9. Article ; Online: Development of low-energy X-ray detectors using LGAD sensors.

    Andrä, Marie / Zhang, Jiaguo / Bergamaschi, Anna / Barten, Rebecca / Borca, Camelia / Borghi, Giacomo / Boscardin, Maurizio / Busca, Paolo / Brückner, Martin / Cartiglia, Nicoló / Chiriotti, Sabina / Dalla Betta, Gian Franco / Dinapoli, Roberto / Fajardo, Pablo / Ferrero, Marco / Ficorella, Francesco / Fröjdh, Erik / Greiffenberg, Dominic / Huthwelker, Thomas /
    Lopez-Cuenca, Carlos / Meyer, Markus / Mezza, Davide / Mozzanica, Aldo / Pancheri, Lucio / Paternoster, Giovanni / Redford, Sophie / Ruat, Marie / Ruder, Christian / Schmitt, Bernd / Shi, Xintian / Sola, Valentina / Thattil, Dhanya / Tinti, Gemma / Vetter, Seraphin

    Journal of synchrotron radiation

    2019  Volume 26, Issue Pt 4, Page(s) 1226–1237

    Abstract: Recent advances in segmented low-gain avalanche detectors (LGADs) make them promising for the position-sensitive detection of low-energy X-ray photons thanks to their internal gain. LGAD microstrip sensors fabricated by Fondazione Bruno Kessler have been ...

    Abstract Recent advances in segmented low-gain avalanche detectors (LGADs) make them promising for the position-sensitive detection of low-energy X-ray photons thanks to their internal gain. LGAD microstrip sensors fabricated by Fondazione Bruno Kessler have been investigated using X-rays with both charge-integrating and single-photon-counting readout chips developed at the Paul Scherrer Institut. In this work it is shown that the charge multiplication occurring in the sensor allows the detection of X-rays with improved signal-to-noise ratio in comparison with standard silicon sensors. The application in the tender X-ray energy range is demonstrated by the detection of the sulfur K
    Language English
    Publishing date 2019-06-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2021413-3
    ISSN 1600-5775 ; 0909-0495
    ISSN (online) 1600-5775
    ISSN 0909-0495
    DOI 10.1107/S1600577519005393
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