A5054942196- Particle Detector Development and Performance
- CCD and CMOS Imaging Sensors
- Radiation Detection and Scintillator Technologies
- Medical Imaging Techniques and Applications
- Advanced X-ray and CT Imaging
- Advanced X-ray Imaging Techniques
- Advancements in Photolithography Techniques
- Particle Accelerators and Free-Electron Lasers
- Advanced Optical Sensing Technologies
- Nuclear Physics and Applications
- Electron and X-Ray Spectroscopy Techniques
- Digital Radiography and Breast Imaging
- Atomic and Subatomic Physics Research
- Particle physics theoretical and experimental studies
- Advanced Electron Microscopy Techniques and Applications
- Thin-Film Transistor Technologies
- Advancements in PLL and VCO Technologies
- Radiation Therapy and Dosimetry
- Nuclear reactor physics and engineering
- Advanced Radiotherapy Techniques
- Spectroscopy Techniques in Biomedical and Chemical Research
- Mass Spectrometry Techniques and Applications
- Ion-surface interactions and analysis
- Photonic and Optical Devices
- Ocular Infections and Treatments
Rutherford Appleton Laboratory
2014-2024
Science and Technology Facilities Council
2012-2024
University College London
2020
University of Birmingham
2020
Deutsches Elektronen-Synchrotron DESY
2020
Research Complex at Harwell
2014-2015
PImMS, or Pixel Imaging Mass Spectrometry, is a novel high-speed monolithic CMOS imaging sensor tailored to mass spectrometry requirements, also suitable for other dark-field applications. In its application time-of-flight spectrometry, the permits ion arrival time distributions be combined with 2D imaging, providing additional information about initial position velocity of ions under study. PImMS1, first generation in this family, comprises an array 72 by pixels on 70 μm pitch. Pixels...
The development of sensors capable detecting particles and radiation with both high time positional resolution is key to improving our understanding in many areas science. Example applications such range from fundamental scattering studies chemical reaction mechanisms through imaging mass spectrometry surfaces, neutron aimed at probing the structure materials, time-resolved fluorescence measurements elucidate function biomolecules. In addition improved throughput resulting parallelisation...
We present the first multimass velocity-map imaging data acquired using a new ultrafast camera designed for time-resolved particle imaging. The PImMS (Pixel Imaging Mass Spectrometry) sensor allows events to be imaged with time resolution as high 25 ns over acquisition times of more than 100 μs. In photofragment studies, this images multiple fragment masses on each time-of-flight cycle. describe architecture and bench-testing photofragments formed in UV photolysis two test molecules: Br2...
Imaging mass spectrometry is a powerful technique that allows chemical information to be correlated spatial coordinate on sample. By using stigmatic ion microscopy, in conjunction with fast cameras, multiple masses can imaged within single experimental cycle. This means fewer laser shots and acquisition cycles are required obtain full data set, samples suffer less degradation as overall collection time reduced. We present the first imaging results obtained new time-stamping detector, named...
CMOS image sensors, also known as Active Pixel Sensors (APS) or Monolithic (MAPS), are today the dominant imaging devices. They omnipresent in our daily life, sensors cellular phones, web cams, digital cameras, ... In these applications, pixels can be very small, micron range, and themselves tend to limited size. However, many scientific like particle X-ray detection, require large format, often with pixels, well other specific performance, low noise, radiation hardness fast readout. The...
With the increased brilliance of state-of-the-art Synchrotron radiation sources and advent Free Electron Lasers enabling revolutionary science with EUV to X-ray photons comes an urgent need for suitable photon imaging detectors. Requirements include high frame rates, very large dynamic range, single-photon counting capability low probability false positives, (multi)-megapixels.
With the increased brilliance of state-of-the-art Synchrotron radiation sources and advent Free Electron Lasers enabling revolutionary science on atomic length time scales with EUV to X-ray photons comes an urgent need for suitable photon imaging detectors. Requirements include high frame rates, very large dynamic range, single-photon counting capability low probability false positives, (multi)-megapixels.
Abstract The MOnolithic Stitched Sensor (MOSS) is a development prototype chip towards the ITS3 vertexing detector for ALICE experiment at LHC. Designed using 65 nm CMOS Imaging technology, it aims profiting from stitching technique to construct single-die monolithic pixel of 1.4 cm × 26 cm. MOSS one prototypes developed within CERN-EP R&D framework learn how make stitched wafer-scale sensors with satisfactory yield. This contribution will describe some design challenges sensor and...
Over the last decade, synchrotron radiation sources have seen a significant increase in brilliance, and advent of free electron lasers has made entire new research fields accessible to investigations with X-rays. These advances light source capabilities resulted not only host scientific discoveries, but also need for generation X-ray imaging detectors that can match sources' terms frame rate image dynamic range while recording information fine granularity over large – preferably...
In this paper the back-side-illuminated Percival 2-Megapixel (P2M) detector is presented, along with its characterization by means of optical and X-ray photons. For first time, response system to soft X-rays (250 eV 1 keV) presented. The main performance parameters are measured, assessing capabilities in terms noise, dynamic range single-photon discrimination capability. Present limitations coming improvements discussed.
This paper reports on the development and commissioning of GP2 detector. was developed to address requirement for a high-resolution event-mode imaging detector, application in energy-resolved neutron radiography. The name derives from use gadolinium as conversion material, combined with second-generation mass spectrometry sensor known PImMS2. Theoretical measured characteristics are compared, emphasis usability functionality detector has been steered by design philosophy which established...
The PERCIVAL (Pixelated Energy Resolving CMOS Imager, Versatile And Large) soft X-ray 2D imaging detector is based on stitched, wafer-scale sensors possessing a thick epi-layer, which together with back-thinning and back-side illumination yields elevated quantum efficiency in the photon energy range of 125–1000 eV. Main application fields are foreseen science FELs synchrotron radiation. This requires high dynamic up to 105 ph @ 250 eV paired single sensitivity confidence at moderate frame...
The peak brilliance reached by today's Free-Electron Laser and Synchrotron light sources requires photon detectors matching their output intensity other characteristics in order to fully realize the sources' potential. Pixellated Energy Resolving CMOS Imager, Versatile And Large (Percival) is a dedicated soft X-ray imager (0.25–1 keV) developed for this purpose collaboration of DESY, Rutherford Appleton Laboratory/STFC, Elettra Sincrotrone Trieste, Diamond Light Source, Pohang Accelerator...
In this paper, we present the Pixel Imaging Mass Spectrometry (PImMS) sensor, a pixelated Time-of-Flight (TOF) sensor for use in mass spectrometry. The device detects any event which produces signal above programmable threshold with timing resolution of 25ns. Both analogue and digital readout modes are available all pixels can be individually trimmed to improve noise performance. themselves contain conditioning circuitry as well complex logic totalling more than 600 transistors. This large...
The PERCIVAL soft X-ray imager is being developed by DESY, RAL, Elettra, DLS, and PAL to address the challenges at high brilliance Light Sources such as new-generation Synchrotrons Free Electron Lasers. Typical requirements for detector systems these sources are frame rates, large dynamic range, single-photon counting capability with low probability of false positives, quantum efficiency, (multi)-mega-pixel arrangements. a monolithic active pixel sensor, based on CMOS technology. It designed...
With the increased brilliance of state-of-the-art synchrotron radiation sources and advent free-electron lasers (FELs) enabling revolutionary science with EUV to X-ray photons comes an urgent need for suitable photon imaging detectors. Requirements include high frame rates, very large dynamic range, single-photon sensitivity low probability false positives (multi)-megapixels. At DESY, one ongoing development project - in collaboration RAL/STFC, Elettra Sincrotrone Trieste, Diamond, Pohang...
PERCIVAL ("Pixelated Energy Resolving CMOS Imager, Versatile And Large") is a monolithic active pixel sensor (MAPS) based on technology. Is being developed by DESY, RAL/STFC, Elettra, DLS, and PAL to address the various requirements of detectors at synchrotron radiation sources Free Electron Lasers (FELs) in soft X-ray regime. These include high frame rates FELs base-rate compatibility, large dynamic range, single-photon counting capability with low probability false positives, quantum...
Purpose Current techniques and procedures for dosimetry in microbeams typically rely on radiochromic film or small volume ionization chambers validation quality assurance 2D 1D, respectively. Whilst well characterized clinical preclinical radiotherapy, these methods are noninstantaneous do not provide real time profile information. The objective of this work is to determine the suitability newly developed vM1212 detector, a pixelated CMOS (complementary metal‐oxide‐semiconductor) imaging...
In this paper, we are presenting the Percival detector, a monolithic CMOS Imager for detection of soft x-rays in Synchrotron Rings and Free Electron Lasers. The imager consists 2D array many (2M) small (27um pitch) pixels, without dead or blind zones imaging area. achieves low noise high dynamic range by means an adaptive-gain in-pixel circuitry, that has been validated on prototypes. features on-chip Analogue-to-Digital conversion to 12+1 bits, readout speed which is compatible with most...
In this paper we describe the DECAL Monolithic Active Pixel Sensor (MAPS) for digital electromagnetic calorimetry. The sensor consists of a matrix 64x64 55um pixels, and provides readout at 40MHz number particles which have struck in preceding 25ns. It can be configured to report as total sum across (equivalent pad an analogue calorimeter) or per column traditional strip detector). Design operation is described, results chip characterisation are reported compared simulations. Keywords—CMOS...
Free-Electron Lasers and Synchrotrons are rapidly increasing in brilliance. This has led a requirement of large dynamic range high frame rate sensors that is now being fulfilled by the PERCVIAL CMOS imager for direct X-ray detection developed at Rutherford Appleton Laboratory. Utilising lateral overflow pixel back-side illumination, PERCIVAL simultaneously achieves low-noise single-photon full well up to 107 e−, all while maintaining 120Hz. currently test structure stage, will be produced 2...
The PERCIVAL soft-X-ray (250 eV 1 keV) image detector project is a collaboration between DESY, STFC, Elettra Sincrotrone Trieste and Diamond Light Source. objective of the to develop back-thinned CMOS which outperforms present soft-X ray technology, in terms sensor size, noise, dynamic range frame rate. size this 13M pixel imager associated with its 120 frames per second rate impose very challenging requirements Data Acquisition Backend system. A DAQ backend system architecture, using...
The PERCIVAL detector is a CMOS imager designed for the soft X-ray regime at photon sources. Although still in its final development phase, it has recently seen first user experiments: ptychography free-electron laser, holographic imaging storage ring and preliminary tests on correlation spectroscopy. performed remarkably well terms of spatial resolution achievable sample plane, owing to small pixel size, large active area very dynamic range; but also frame rate, which significantly faster...