Results 11 to 20 of about 1,677 (178)

Time-resolved point dosimetry for spread-out Bragg-peak proton FLASH using fibre-coupled scintillators. [PDF]

Med Phys
Abstract Background In FLASH radiotherapy, the dose is delivered using ultra‐high dose rates (UHDR), which are approximately 100 times higher than those used for conventional (CONV) treatments. This has shown promise in sparing normal tissue while maintaining tumour control.
Steenholdt SR, Johansen JG, Kanouta E, Poulsen PR.   +3 more
europepmc   +2 more sources

Gain stabilisation of SiPMs [PDF]

Proceedings of Technology and Instrumentation in Particle Physics 2014 — PoS(TIPP2014), 2015
The gain G of SiPMs depends both on bias voltage and on temperature. For stable operation in large detector systems, gain needs to be kept constant. This can be achieved by readjusting the bias voltage with temperature. We have built an adaptive bias voltage regulator (ADApower) that uses a linear algorithm to adjust the bias voltage V if the ...
Jaroslav Cvach, Gerald Eigen, Jiri Kvasnicka, Ivo Polak, Erik Van Der Kraaij, Justas Zalieckas   +5 more
openaire   +3 more sources

Radiation damage uniformity in a SiPM

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2022
A dedicated single-cell SiPM structure is designed and measured to investigate the radiation damage effects on the gain and breakdown voltage of SiPMs exposed to a reactor neutron fluence up to $Φ$ = 5e13 cm$^{-2}$. The cell has a pitch of 15 $μ$m. Results of the measurements and analysis of the IV-curves are presented.
O. Bychkova, E. Garutti, E. Popova, A. Stifutkin, S. Martens, P. Parygin, A. Kaminsky, J. Schwandt   +7 more
openaire   +3 more sources

Uncertainty-aware gamma interaction localization and reconstruction in PET. [PDF]

Med Phys
Abstract Background Precise localization of gamma‐ray interactions inside scintillation detectors is essential for high‐resolution positron emission tomography (PET) imaging. Although machine learning methods have demonstrated strong performance in gamma interaction positioning, most existing approaches do not quantify event‐level uncertainty, leaving ...
Thull J, Remennik J, Schug D, Weissler B, Kuhl Y, Schulz V.   +5 more
europepmc   +2 more sources

Characterisation of SiPM Photon Emission in the Dark [PDF]

Sensors, 2021
In this paper, we report on the photon emission of Silicon Photomultipliers (SiPMs) from avalanche pulses generated in dark conditions, with the main objective of better understanding the associated systematics for next-generation, large area, SiPM-based physics experiments.
Joseph Biagio McLaughlin, Giacomo Gallina, Fabrice Retière, Austin De St. Croix, Pietro Giampa, Mahsa Mahtab, Peter Margetak, Lars Martin, Nicolas Massacret, Jocelyn Monroe, Mayur Patel, Kurtis Raymond, Jolie Roiseux, Liang Xie, Guoqing Zhang   +14 more
openaire   +5 more sources

Skewness-based characterization of silicon photomultipliers

European Physical Journal C: Particles and Fields, 2022
Characterization of SiPMs is an objective of high importance in almost any research, development, and application of these unique photon detectors. Two decades of characterization method developments resulted in a comprehensive and elegant methodology ...
S. Vinogradov
doaj   +1 more source

Experimental Study on Km-Range Long-Distance Measurement Using Silicon Photomultiplier Sensor with Low Peak Power Laser Pulse

Applied Sciences, 2021
Silicon photomultipliers (SiPM) have drawn considerable attention due to their superior sensitivity with a multi-pixel matrix structure. SiPM can be the choice of a detector for time of flight measurement which is one of the most promising applications ...
Can Candan, Mehmet Tiken, Halil Berberoglu, Elif Orhan, Aydin Yeniay   +4 more
doaj   +1 more source

A Comparison of VLC Receivers That Incorporate Two Different SiPMs

IEEE Photonics Journal, 2023
Previously, when selecting silicon photomultipliers (SiPMs) for use in visible light communications (VLC) systems the bandwidth of the SiPM has been a high priority.
Zubair Ahmed, Wajahat Ali, Grahame Faulkner, Steve Collins   +3 more
doaj   +1 more source

Modelling and Image Reconstruction Evaluation of a Scintillation Camera with Silicone Photomultiplier [PDF]

Journal of Biomedical Physics and Engineering, 2022
Background: Recent research on photon detection has led to the introduction of a silicone photomultiplier (SiPM) that operates at a low voltage and is insensitive to magnetic fields.
Sham FIrdaus Md Ali, M. Iqbal Saripan, Ahmad Shukri Muhammad Noor, Fakhrul Zaman Rokhani, Suhairul Hashim, Dong Xianling   +5 more
doaj   +1 more source

Multilevel Subcarrier Index-Power Modulated Optical OFDM With Adaptive Bit Loading for IMDD PON Systems

IEEE Photonics Journal, 2016
In a previously published transmission technique known as subcarrier index-power modulated optical OFDM (SIPM-OOFDM), a new subcarrier index-power (SIP) information-bearing dimension is introduced to enable SIPM-OOFDM to carry one extra information bit ...
Fadi Halabi, Lin Chen, Roger Phillip Giddings, Ali Hamie, J. M. Tang   +4 more
doaj   +1 more source