Performance evaluation of position-sensitive silicon detectors with four-corner readout

Ionization cluster size distributions produced in the sensitive volume of an ion-counting wall-less nanodosimeter by monoenergetic carbon ions with energies between 45 MeV and 150 MeV were measured at the TANDEM-ALPI ion accelerator facility complex of the LNL-INFN in Legnaro. Those produced by monoenergetic helium ions with energies between 2 MeV and 20 MeV were measured at the accelerator facilities of PTB and with a Am alpha particle source. CH was used as the target gas. The ionization cluster size distributions were measured in narrow beam geometry with the primary beam passing the target volume at specified distances from its centre, and in broad beam geometry with a fan-like primary beam. By applying a suitable drift time window, the effective size of the target volume was adjusted to match the size of a DNA segment. The measured data were compared with the results of simulations obtained with the PTB Monte Carlo code PTra. Before the comparison, the simulated cluster size distributions were corrected with respect to the background of additional ionizations produced in the transport system of the ionized target gas molecules. Measured and simulated characteristics of the particle track structure are in good agreement for both types of primary particles and for both types of the irradiation geometry. As the range in tissue of the ions investigated is within the typical extension of a spread-out Bragg peak, these data are useful for benchmarking not only 'general purpose' track structure simulation codes, but also treatment planning codes used in hadron therapy. Additionally, these data sets may serve as a data base for codes modelling the induction of radiation damages at the DNA-level as they almost completely characterize the ionization component of the nanometric track structure.

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“…The relative root mean square (rms) detector non-linearity for the position is determined as [19] δ .〈 0 1 − 0 3 4 〉 6 7…”

Section: Uncertaintiesmentioning

confidence: 99%

Measurement of track structure parameters of low and medium energy helium and carbon ions in nanometric volumes

2017

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“…Space detections could be made more accurate by including instruments that could provide pitch angle‐resolved measurements in order to determine the altitude profile of energy deposition more accurately. It is believed that multi‐pixel silicon detectors and/or position‐sensitive detectors may aid in increasing the pitch angle resolution to as good as 1° (Banu et al., 2008; Marshall & Cully, 2020), which is not possible with current instruments. Radar observations could be improved by getting more than one sample out of every single radar pulse, in addition to high SNR.…”

Section: Discussionmentioning

confidence: 99%

Time‐Dependent Inversion of Energetic Electron Precipitation Spectra From Ground‐Based Incoherent Scatter Radar Measurements

et al. 2023

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Energetic Particle Precipitation (EPP) represents one of the major sink (or loss) processes for outer radiation belt electrons (e.g., Crew et al., 2016;Thorne, 2010). Other loss processes include outward radial diffusion to the magnetopause and loss of adiabaticity on stretched magnetic field lines (Crew et al., 2016;Ukhorskiy, 2006), a phenomenon referred to as magnetopause shadowing. For EPP, despite the observed presence of coterminous waves with certain types of precipitation, it is remarkably difficult to verify directly that those waves are in fact responsible for such precipitation (Kaeppler et al., 2020). In this work we focus on EPP and their space and ground detection.Once precipitated, the energy transferred during collisions between precipitating particles and neutral components of the atmosphere can ionize and dissociate the collision components, and can lead to chain reactions that considerably disrupt the chemical properties of the upper atmosphere (e.g.,

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“…For PSDs, the typical reconstruction method is the charge center of gravity method (COG). Considering the structural characteristics of the 2-D resistive anode readout method, the general reconstruction method is the socalled 4-node-method [7]. It uses the 4 nodes of the fired pad to reconstruct the hit position like…”

Section: Reconstruction Methodsmentioning

confidence: 99%

“…Based on the four-corner resistive readout method [5,6], which is widely used in Position Sensitive silicon Detectors (PSD) [7], Sarvestani et al [8] developed a 2-D interpolating resistive readout structure for Micro-CAT. This readout structure can provide good spatial resolu-tion with an enormous reduction of electronics channels, especially compared to pixel readout.…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of resistive anode for a two-dimensional imaging GEM detector

Dong

Zhao

et al. 2016

Chinese Phys. C

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A resistive anode for two-dimensional imaging detectors, which consists of a series of high resistivity pads surrounded by low resistivity strips, can provide good spatial resolution while reducing the number of electronics channels required. The optimization of this kind of anode has been studied by both numerical simulations and experimental tests. It is found that to obtain good detector performance, the resistance ratio of the pads to the strips should be larger than 5, the nonuniformity of the pad surface resistivity should be less than 20%, a smaller pad width leads to a smaller spatial resolution, and when the pad width is 6 mm, the spatial resolution (σ) can reach about 105 μm. Based on the study results, a 2-D GEM detector prototype with optimized resistive anode is constructed and a good imaging performance is achieved.

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Performance evaluation of position-sensitive silicon detectors with four-corner readout

Cited by 26 publications

References 12 publications

Measurement of track structure parameters of low and medium energy helium and carbon ions in nanometric volumes

Measurement of track structure parameters of low and medium energy helium and carbon ions in nanometric volumes

Time‐Dependent Inversion of Energetic Electron Precipitation Spectra From Ground‐Based Incoherent Scatter Radar Measurements

Design and optimization of resistive anode for a two-dimensional imaging GEM detector

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