J. Lapington
A5044932761- Photocathodes and Microchannel Plates
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Gamma-ray bursts and supernovae
- Radiation Therapy and Dosimetry
- CCD and CMOS Imaging Sensors
- Electron and X-Ray Spectroscopy Techniques
- Neutrino Physics Research
- Advanced Optical Sensing Technologies
- Stellar, planetary, and galactic studies
- Astro and Planetary Science
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Astrophysical Phenomena and Observations
- Astrophysics and Star Formation Studies
- Atmospheric Ozone and Climate
- Calibration and Measurement Techniques
- Astronomy and Astrophysical Research
- Advanced X-ray and CT Imaging
- Ga2O3 and related materials
- Solar and Space Plasma Dynamics
- Electronic and Structural Properties of Oxides
- Plasma Diagnostics and Applications
University of Leicester
2015-2025
University of Łódź
2023
University of Turku
2023
Niels Brock
2023
University of Copenhagen
2023
Main Astronomical Observatory
2023
Taras Shevchenko National University of Kyiv
2023
National Academy of Sciences of Ukraine
2023
Georgia Institute of Technology
2023
AGH University of Krakow
2023
Einstein Probe is a small mission dedicated to time-domain high-energy astrophysics.Its primary goals are discover transients and monitor variable objects in the 0.5-4 keV Xrays, at higher sensitivity by one order of magnitude than those ones currently orbit.Its wide-field imaging capability, featuring large instantaneous field-of-view (60 • × 60 , ∼ 1.1 sr), achieved using established technology micro-pore (MPO) lobster-eye optics, thereby offering unprecedentedly high Grasp (effective area...
We describe plans for the development of Southern Wide-field Gamma-ray Observatory (SWGO), a next-generation instrument with sensitivity to very-high-energy (VHE) band be constructed in Hemisphere. SWGO will provide wide-field coverage large portion southern sky, effectively complementing current and future instruments global multi-messenger effort understand extreme astrophysical phenomena throughout universe. A detailed description science topics addressed by is available case white paper...
Photek (U.K.) and the TORCH collaboration are undertaking a three year development program to produce novel square MCP-PMT for single photon detection. The detector aims provide particle identification in 2–10 GeV/c momentum range, using Time-of-Flight method based on Cherenkov light. It is stand-alone R&D project with possible application LHCb, has been proposed LHCb Upgrade. Microchannel Plate (MCP) will timing accuracy of 40 ps, its include following properties: (i) Long lifetime up at...
The prototype Schwarzschild-Couder Telescope (pSCT) is a candidate for medium-sized telescope in the Cherenkov Array. pSCT based on novel dual mirror optics design which reduces plate scale and allows use of silicon photomultipliers as photodetectors. camera currently has only central sector instrumented with 25 modules (1600 pixels), providing 2.68$^{\circ}$ field view (FoV). electronics are custom TARGET (TeV array readout GSa/s sampling event trigger) application specific integrated...
We describe an experiment to measure the spatial charge distribution produced by a microchannel plate intensifier with new type of division readout, ‘‘split strip’’ anode. This anode is modified strip and which determines both amount deposited on each half centroid position for event. present experimental measurements cloud distributions variety detector operating conditions. find that, as first-order approximation, one can assume be azimuthally symmetric. Additionally, remains virtually...
Einstein Probe is a small mission dedicated to time-domain high-energy astrophysics. Its primary goals are discover transients and monitor variable objects in the $0.5-4~$keV X-rays, at higher sensitivity by one order of magnitude than those ones currently orbit. wide-field imaging capability, featuring large instantaneous field-of-view ($60^\circ \times60^\circ$, $\sim1.1$sr), achieved using established technology micro-pore (MPO) lobster-eye optics, thereby offering unprecedentedly high...
TORCH is a novel time-of-flight detector that has been developed to provide charged-particle identification between 2 and 10 GeV/c momentum. combines arrival times from multiple Cherenkov photons produced within mm-thick quartz radiator plate, achieve 15 ps resolution per incident particle. A customised Micro-Channel Plate photomultiplier tube (MCP-PMT) associated readout system utilises an innovative charge-sharing technique adjacent pixels obtain the necessary 70 time of each photon....
All camera designs for Small-Sized telescopes (SSTs) proposed the Cherenkov Telescope Array (CTA) utilize silicon photomultipliers (SiPM) as their baseline photon sensor technology. The dual-mirror SST (SST-2M) has a smaller plate scale (i.e. image size) than single-mirror SST, allowing it to employ 2,000 square SiPMs with pixel sizes of approximately 6 mm, close mainstream SiPM sizes. In CTA, night sky background level typically ∼25 Mcounts/s/pixel (>100 at maximum) places severe...
A low-power multi-channel amplifier-discriminator was developed for application in highly time-resolved detection systems. The proposed circuit architecture, so-called Nino, is based on a time-over-threshold approach and shows high potential readout of solid-state photo-detectors detectors vacuum technologies. Irpics designed 250 nm CMOS technology, implementing 32 channels Nino version optimized to achieve high-time resolution the output low-voltage differential signals (LVDS) while keeping...
The Gamma Cherenkov Telescope (GCT) is proposed to be part of the Small Size (SST) array Array (CTA). GCT dual-mirror optical design allows use a compact camera diameter roughly 0.4 m. curved focal plane equipped with 2048 pixels ~0.2° angular size, resulting in field view ~9°. designed record flashes light from electromagnetic cascades, which last only few tens nanoseconds. Modules based on custom ASICs provide required fast electronics, facilitating sampling and digitisation as well first...
The Cherenkov Telescope Array will be the next generation ground-based gamma ray observatory in energy range from few tens of GeV to hundreds TeV. It built on two sites, one for each hemisphere, cover entire sky. consist telescopes three different sizes: large, medium and small, with primary reflectors 23, 11.5 4.3 m diameter, respectively. Small-Sized Telescopes (SSTs) focus highest energies; at least 37 (and up 70) deployed southern site Paranal, Chile, covering several square kilometers....
We describe the Wedge and Strip Anode (WSA) position read-out system compare performance of currently used WSAs with that Resistive Disk Anodes (RDAs). show for small systems WSA can outperform RDA while larger cannot be at all due to size limitations. discuss noise in present a comprehensive optimisation scheme based on model capacitance [1] which is capable reducing electronic by factor up 6 compared current WSAs. capacitance, resolution measurements several active diameters 200mm. simple...
The Compact High Energy Camera (CHEC) is a camera-development project involving UK, US, Japanese and Dutch institutes for the dual-mirror Small-Sized Telescopes (SST-2M) of Cherenkov Telescope Array (CTA). Two CHEC prototypes, based on different photosensors are funded will be assembled tested in UK over next ~18 months. designed to record flashes light lasting from few hundred nanoseconds, with typical RMS image width length ~0.2 x 1.0 degrees, has 9 degree field view. physical camera...
We describe the Wedge and Strip Anode (WSA), a two-dimensional position sensitive charge read-out system. Two new optimised WSA's have been developed, giving improved resolution over previous for given gain. show that due to effective absence of partition noise, outperform resistive disk anodes at all levels. present measurements performance these optimsed read-outs. Finally, we designed built software controlled WSA manufacturing facility, which can produce any pattern up 400 × 500 mm2 with...