High speed imaging using a capacitive division technique

Lapington, J. S.

doi:10.1016/j.nima.2011.12.006

Cited by 12 publications

(4 citation statements)

References 11 publications

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“…9 The method is implemented using charge division (or sharing), similar in concept to modern touch-screen devices. The CDIR anode is comprised of a number of discrete charge sensitive pads, which are capacitively coupled to one another as shown in Figure 1.…”

Section: Cdir Anode Systemmentioning

confidence: 99%

A wide field fluorescence lifetime imaging system using a light sheet microscope

Birch

Moore

et al. 2016

Biophotonics: Photonic Solutions for Better Health Care V

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Fluorescence lifetime imaging microscopy (FLIM) has allowed scientists to discern information about the chemical properties of biological processes and has become a vital tool in the life sciences and medical research communities. Measuring the spatial lifetime distribution of the fluorophores as well as the intensity distribution enables users to discern vital information about the chemical environment. It however, remains challenging and often involves slow scanning. We present a new microscope system based on light sheet illumination that uses a micro channel plate (MCP) device called a Capacitive Division Imaging Readout (CDIR) which has been developed by Photek Ltd. The device uses an array of capacitors to move the charge site from the MCP to four pre-amplifiers and time-over-threshold discriminators. This camera has the ability to image photons as well as measure the arrival time, enabling high speed FLIM imaging of biological samples.

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Section: Cdir Anode Systemmentioning

confidence: 99%

A wide field fluorescence lifetime imaging system using a light sheet microscope

Birch

Moore

et al. 2016

Biophotonics: Photonic Solutions for Better Health Care V

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“…Also under investigations is the use of a fast amplifier discriminator providing a digital output pulse with time-over-threshold measurement of the input charge [63][64][65]. The high illumination rates and occupancies exclude in most cases the use of more classical readout techniques like the resistive anode [66], the cross strip anode [67] and the capacitive division [68].…”

Section: Particle Identification and Time-of-flight Detectors In Highmentioning

confidence: 99%

Micro-channel plates and vacuum detectors

Gys

2015

Nuclear Instruments and Methods in Physics Research Section A:

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a b s t r a c tA micro-channel plate is an array of miniature electron multipliers that are each acting as a continuous dynode chain. The compact channel structure results in high spatial and time resolutions and robustness to magnetic fields. Micro-channel plates have been originally developed for night vision applications and integrated as an amplification element in image intensifiers. These devices show single-photon sensitivity with very low noise and have been used as such for scintillating fiber tracker readout in high-energy physics experiments. Given their very short transit time spread, micro-channel plate photomultiplier tubes are also being used in time-of-flight and particle identification detectors. The present paper will cover the history of the micro-channel plate development, basic features, and some of their applications. Emphasis will be put on various new manufacturing processes that have been developed over the last few years, and that result in a significant improvement in terms of efficiency, noise, and lifetime performance.

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“…Microchannel plate (MCP) photomultipliers continue to have application where very low noise single photon counting at very high time resolution, ∼25 ps, and high spatial resolution, ∼ 20 μm are required. While simple charge division readouts, such as the resistive anode, wedge and strip anode, and capacitive division readout [1,2] are able to achieve these temporal and spatial requirements with a low channel count, their serial event processing nature limits them to moderate event rates (∼200 kHz). Serial readouts require the event processing time to be reduced to achieve higher count rates, which causes the signal to noise ratio, and thus the resolution, to degrade.…”

Section: Introductionmentioning

confidence: 99%

Picosecond imaging at high spatial resolution using TOFPET2 AISC v2d and microchannel plate detector

Sudjai¹,

Lapington²,

Leach³

2022

J. Inst.

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Microchannel plate-based detectors provide advantages over their solid-state counterparts for applications where a combination of virtually zero noise photon-counting, large format, short wavelength sensitivity with high resolution timing and imaging are required. Solar-blind applications, Cherenkov detectors for high energy physics, and UV astronomy are such fields. The application to Cherenkov detection is particularly demanding, requiring time resolution below 100 picoseconds combined with imaging and high throughput. This requires the readout to combine high spatial and temporal event resolution at high rates necessitating a parallel readout approach. We describe a readout design comprising a pixellated readout array instrumented using multi-channel fast timing electronics and incorporating charge centroiding to achieve sub-pixel spatial resolution. We present experimental results of the relationship between time-over-threshold and signal amplitude and a centroiding image obtained with an MCP detector using a pixellated readout geometry. The readout was optimised for a fast electronics implementation based on the TOFPET system, a multi-channel all-in-one ASIC originally designed for time-of-flight PET using silicon photomultipliers.

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High speed imaging using a capacitive division technique

Cited by 12 publications

References 11 publications

A wide field fluorescence lifetime imaging system using a light sheet microscope

A wide field fluorescence lifetime imaging system using a light sheet microscope

Micro-channel plates and vacuum detectors

Picosecond imaging at high spatial resolution using TOFPET2 AISC v2d and microchannel plate detector

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