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| Author | : Stephen Bongiorno |
| Publisher | : |
| Total Pages | : 309 |
| Release | : 2013 |
| Genre | : |
| ISBN | : |
| Author | : Christopher Griffith |
| Publisher | : |
| Total Pages | : |
| Release | : 2015 |
| Genre | : |
| ISBN | : |
Hybrid CMOS detectors (HCD) have provided great benefit to the infrared and optical fields of astronomy, and they are poised to do the same for X-ray astronomy. Infrared HCDs have already flown on the Hubble Space Telescope and the Wide-Field Infrared Survey Explorer (WISE) mission and are slated to fly on the James Webb Space Telescope (JWST). Hybrid CMOS X-ray detectors offer low susceptibility to radiation damage, low power consumption, and fast readout time to avoid pile-up. The fast readout time is necessary for future high throughput X-ray missions. The Speedster-EXD X-ray HCD presented in this dissertation offers new in-pixel features and reduces known noise sources seen on previous generation HCDs. The Speedster-EXD detector makes a great step forward in the development of these detectors for future space missions.This dissertation begins with an overview of future X-ray space mission concepts and their detector requirements. The background on the physics of semiconductor devices and an explanation of the detection of X-rays with these devices will be discussed followed by a discussion on CCDs and CMOS detectors. Next, hybrid CMOS X-ray detectors will be explained including their advantages and disadvantages. The Speedster-EXD detector and its new features will be outlined including its ability to only read out pixels which contain X-ray events. Test stand design and construction for the Speedster-EXD detector is outlined and the characterization of each parameter on two Speedster-EXD detectors is detailed including read noise, dark current, interpixel capacitance crosstalk (IPC), and energy resolution. Gain variation is also characterized, and a Monte Carlo simulation of its impact on energy resolution is described. This analysis shows that its effect can be successfully nullified with proper calibration, which would be important for a flight mission. Appendix B contains a study of the extreme tidal disruption event, Swift J1644+57, to search for periodicities in its X-ray light curve.
| Author | : Conny Hansson |
| Publisher | : Springer Nature |
| Total Pages | : 297 |
| Release | : 2023-11-14 |
| Genre | : Technology & Engineering |
| ISBN | : 3031352416 |
This book provides readers a good overview of some of most recent advances in the field of hybrid pixelated detectors for X-ray imaging. Coverage includes both technology and applications, with an in-depth review of the research topics conducted at leading research institutions in the world. The conversion of the X-ray signal into an analogue/digital value is discussed, as well as a review of CMOS chips used for X-ray image sensors. Applications of hybrid pixel detectors are discussed, such as medical imaging, high energy physics, space, non-destructive testing and security. Provides coverage of a broad range of topics, from international experts in academia and industry; Includes in-depth analysis of how to optimize X-ray detection and electronics for X-ray detection; Covers both technology and applications in a number of different domains.
| Author | : Jenna E. Beletic |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 825 |
| Release | : 2006-09-14 |
| Genre | : Science |
| ISBN | : 1402043309 |
The 2005 meeting in Taormina, Italy was attended by 127 professionals who develop and use the highest quality detectors for wavelengths from x-ray to sub-mm, with emphasis on optical and infrared detectors. The meeting consisted of overview talks, technical presentations, poster sessions and roundtable discussions. These proceedings capture the technical content and the spirit of the 2005 workshop. The 87 papers cover a wide range of detector technologies including CCDs, CMOS, APDs, and sub-mm detectors. There are papers on observatory status and plans, special applications, detector testing and characterization, and electronics. A special feature of these proceedings is the inclusion of pedagogical overview papers, which were written by teams of leading experts from different institutions. These proceedings are appropriate for a range of expertise levels, from undergraduates to professionals working in the field. The information presented in this book will serve as a valuable reference for many years to come. This workshop was organized by the Scientific Workshop Factory, Inc. and the INAF- Osservatorio Astrofisico di Catania.
| Author | : Cosimo Bambi |
| Publisher | : Springer Nature |
| Total Pages | : 5912 |
| Release | : |
| Genre | : |
| ISBN | : 9811969604 |
| Author | : Bryan N. Dorland |
| Publisher | : |
| Total Pages | : 20 |
| Release | : 2007 |
| Genre | : Artificial satellites |
| ISBN | : |
We report on the first set of laboratory and telescope tests of the Teledyne Imaging System's (TIS) H4RG-10 CMOS-Hybrid visible focal plane array (FPA). This family of detectors has been chosen as the baseline for USNO's proposed J-MAPS space astrometry mission to close a number of capability gaps. While this FPA has been designed for precision astrometry, it has potentially significant Space Situational Awareness (SSA) applications. Because of the hybrid design, which consists of separate readout and detector layers connected by Indium bump-bonds, this FPA has the readout flexibility of advanced CMOS readout integrated circuits (ROICs), including non-destructive readout, random access windowing and selective reset, and near-CCD performance in terms of fill factor, quantum efficiency, read noise and dark current. Our laboratory testing, performed at Goddard Space Flight Center's Detector Characterization Lab, includes measures of absolute spectral quantum efficiency, flat-field response uniformity, read noise, dark current as a function of operating temperature, inter-pixel crosstalk, and persistence. Sky testing, performed at Naval Observatory Flagstaff Station, consists of astrometric and photometric performance characterization. We discuss implications for the use of this detector in future ground- and space-based astrometric, astronomical and SSA applications.
| Author | : Lance Michael Simms |
| Publisher | : |
| Total Pages | : 276 |
| Release | : 2009 |
| Genre | : |
| ISBN | : |
| Author | : |
| Publisher | : World Scientific |
| Total Pages | : 1556 |
| Release | : 2021-05-07 |
| Genre | : Science |
| ISBN | : 981464434X |
Review of Volume 4:'The Handbook can be a good reference for a higher-degree science student approaching the subject or for an expert in a similar field in astronomical instrumentation. The reader requiring an in-depth presentation of a specific topic will be guided by the rich reference lists included at the end of each chapter.'The ObservatoryOur goal is to produce a comprehensive handbook of the current state of the art of astronomical instrumentation with a forward view encompassing the next decade. The target audience is graduate students with an interest in astronomical instrumentation, as well as practitioners interested in learning about the state of the art in another wavelength band or field closely related to the one in which they currently work. We assume a working knowledge of the fundamental theory: optics, semiconductor physics, etc. The purpose of this handbook is to bring together some of the leading experts in the world to discuss the frontier of astronomical instrumentation across the electromagnetic spectrum and extending into multimessenger astronomy.
| Author | : Evan Jennerjahn |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2023 |
| Genre | : |
| ISBN | : |
For space-based X-ray applications, silicon hybrid CMOS detectors (HCDs) offer many advantages over CCDs, such as faster readout rates and in-pixel circuitry. Achieving low noise in X-ray applications of HCDs helps to achieve better energy resolution, so understanding their dark current and read noise is a high priority. Dark current is temperature dependent, so cooling the detector is the best way to minimize its effects. Cooling detectors is costly for CubeSats, so it is important to characterize dark current at the temperatures the detectors will see in orbit. The BlackCAT Cube- Sat is a Coded Aperture Telescope that will search the soft X-ray sky for high-energy astronomical transients. It is a 6U CubeSat mission using an array of four Speedster-EXD550 X-ray HCDs. Here, we analyze the dark current of 2 Speedster-EXD550s.
| Author | : Hannah Grzybowski |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2023 |
| Genre | : |
| ISBN | : |
Speedster-EXD550 hybrid CMOS detectors (HCDs) implement event-driven readout, enabling only those pixels with X-rays to be readout and dramatically increasing the effective readout speeds. In this work, we optimize and characterize detector performance of the Speedster-EXD550, particularly the energy resolution in preparation for use in future missions, including the upcoming BlackCAT CubeSat. BlackCAT is a NASA CubeSat mission using an array of four Speedster- EXD550 hybrid CMOS detectors (HCDs). The purpose of this mission is to search for high- redshift gamma-ray bursts and other high-energy transients.
