Prof. Steven E. Boggs Profile

Prof. Steven E. Boggs

at Univ of California San Diego

SPIE Involvement:

Author

Publications (41)

Proceedings Article | 10 July 2018 Presentation

Presentation

The high-energy x-ray probe (HEX-P) (Conference Presentation)

Kristin Madsen, Fiona Harrison, Brian Grefenstette, Hiromasa Miyasaka, Daniel Stern, Ann Hornschemeier, Mihoko Yukita, William Zhang, Finn Christensen, Charles Hailey, Laura Brenneman, John Tomsick, Andrew Fabian, Jon Miller, Niel Brandt, Grzegorz Madejski, Steven Boggs, Giorgio Matt, Martin Elvis, Deepto Chakrabarty, Allan Hornstrup, Jonathan Grindlay, Victoria Kaspi, Silvano Molendi, William Craig

Proceedings Volume 10699, 106992B (2018) https://doi.org/10.1117/12.2313836

KEYWORDS: X-rays, Spatial resolution, Active galactic nuclei, Binary data

Read Abstract +

Proceedings Article | 6 July 2018 Presentation + Paper

Presentation + Paper

The polarimetric performance of the Compton Spectrometer and Imager (COSI)

C.-Y. Yang, A. Lowell, S. Boggs, J. Tomsick, A. Zoglauer, C. Kierans, S. McBride, M. Amman, H.-K. Chang, P. Jean, C.-H. Lin, C. Sleator, P. von Ballmoos, C.-Y. Chu, J.-L. Chiu, H.-H. Liang, Y.-C. Chang, B. Mochizuki

Proceedings Volume 10699, 106992K (2018) https://doi.org/10.1117/12.2312556

KEYWORDS: Polarization, Polarimetry, Spectroscopy, Imaging systems, Gamma radiation, Scattering, Modulation, Device simulation, Telescopes, Compton scattering

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Proceedings Article | 1 August 2016 Paper

Paper

Positional calibrations of the germanium double-sided strip detectors for the Compton spectrometer and imager

A. Zoglauer, C. Kierans, C. H. Tseng, C. Y. Yang, C. Sleator, J. L. Chiu, J. Tomsick, A. Lowell, S. Boggs, P. Jean, H. K. Chang, C. H. Lin, M. Amman, S. McBride, P. von Ballmoos

Proceedings Volume 9915, 99152H (2016) https://doi.org/10.1117/12.2233145

KEYWORDS: Sensors, Telescopes, Calibration, Germanium, Imaging systems, Spectroscopy, Monte Carlo methods, Spatial resolution, Gamma radiation, Compton scattering

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Proceedings Article | 18 July 2016 Paper

Paper

In-depth calibration of a Laue lens prototype composed of Fe and Al mosaic crystals

Nicolas Barrière, Nicolai Brejnholt, Sonny Massahi, Colin Wade, John Tomsick, Lorraine Hanlon, Steven Boggs, Peter Von Ballmoos

Proceedings Volume 9905, 99056P (2016) https://doi.org/10.1117/12.2234690

KEYWORDS: Gamma radiation, Multilayers, Photons, Sensors, Polymethylmethacrylate, Polarimetry, Polymers, Solar concentrators, Collimators, Telescopes

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Proceedings Article | 18 July 2016 Open Access

Open Access

Paper

First flight of the Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) instrument

Nicole Duncan, P. Saint-Hilaire, A. Shih, G. Hurford, H. Bain, M. Amman, B. Mochizuki, A. Zoglauer, S. Boggs, R. Lin, J. Hoberman, J. Olson, B. Maruca, N. Godbole, D. Smith, J. Sample, N. Kelley, A. Caspi, P. Kaufmann

Proceedings Volume 9905, 99052Q (2016) https://doi.org/10.1117/12.2233859

KEYWORDS: Gamma radiation, Solar energy, Imaging spectroscopy, Imaging systems, Sensors, Sun, Calibration, Ions, Spectroscopy, Photons

Read Abstract +

The Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) instrument is a balloon-borne telescope designed to study solar- are particle acceleration and transport. We describe GRIPS's first Antarctic long-duration flight in January 2016 and report preliminary calibration and science results. Electron and ion dynamics, particle abundances and the ambient plasma conditions in solar flares can be understood by examining hard X-ray (HXR) and gamma-ray emission (20 keV to 10 MeV). Enhanced imaging, spectroscopy and polarimetry of are emissions in this energy range are needed to study particle acceleration and transport questions. The GRIPS instrument is specifically designed to answer questions including: What causes the spatial separation between energetic electrons producing hard X-rays and energetic ions producing gamma-ray lines? How anisotropic are the relativistic electrons, and why can they dominate in the corona? How do the compositions of accelerated and ambient material vary with space and time, and why? GRIPS's key technological improvements over the current solar state of the art at HXR/gamma-ray energies, the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI), include 3D position-sensitive germanium detectors (3D-GeDs) and a single-grid modulation collimator, the multi-pitch rotating modulator (MPRM). The 3D-GeDs have spectral FWHM resolution of a few hundred keV and spatial resolution <1 mm³. For photons that Compton scatter, usually ⪆150 keV, the energy deposition sites can be tracked, providing polarization measurements as well as enhanced background reduction through Compton imaging. Each of GRIPS's detectors has 298 electrode strips read out with ASIC/FPGA electronics. In GRIPS's energy range, indirect imaging methods provide higher resolution than focusing optics or Compton imaging techniques. The MPRM gridimaging system has a single-grid design which provides twice the throughput of a bi-grid imaging system like RHESSI. The grid is composed of 2.5 cm deep tungsten-copper slats, and quasi-continuous FWHM angular coverage from 12.5-162 arcsecs are achieved by varying the slit pitch between 1-13 mm. This angular resolution is capable of imaging the separate magnetic loop footpoint emissions in a variety of are sizes. In comparison, RHESSI's 35-arcsec resolution at similar energies makes the footpoints resolvable in only the largest ares.

Proceedings Article | 4 September 2015 Paper

Paper

Rapid and accurate assembly method for a new Laue lens prototype

Colin Wade, Nicolas Barrière, Lorraine Hanlon, Steven Boggs, Nicolai Brejnholt, Sonny Massahi, John Tomsick, Peter von Ballmoos

Proceedings Volume 9603, 960309 (2015) https://doi.org/10.1117/12.2187029

KEYWORDS: Crystals, Laser crystals, Iron, Prototyping, Aluminum, Ultraviolet radiation, Sensors, X-rays, Photons, Mirrors

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Proceedings Article | 24 July 2014 Paper

Paper

All-sky Compton imager

Peter von Ballmoos, Steven Boggs, Pierre Jean, Andreas Zoglauer

Proceedings Volume 9144, 91440H (2014) https://doi.org/10.1117/12.2057535

KEYWORDS: Sensors, Gamma radiation, Telescopes, Space operations, Space telescopes, Imaging systems, Photons, Signal detection, Germanium, Spectral resolution

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Proceedings Article | 24 July 2014 Paper

Paper

The nuclear spectroscopic telescope array (NuSTAR) high-energy X-ray mission

Kristin Madsen, Fiona Harrison, William Craig, Charles Hailey, William Zhang, Steven Boggs, Daniel Stern, Rick Cook, Karl Forster, Felix Fuerst, Brian Grefenstette, Takao Kitaguchi, Peter Mao, Hiromasa Miyasaka, Vikram Rana, Andreas Zoglauer, Hongjun An, Dominic Walton, Finn Christensen, Niels Westergaard, Craig Markwardt

Proceedings Volume 9144, 91441P (2014) https://doi.org/10.1117/12.2056643

KEYWORDS: X-rays, Stars, X-ray telescopes, Space telescopes, Iron, Data modeling, Calibration, Galactic astronomy, Electroluminescent displays, Magnetism

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Proceedings Article | 24 July 2014 Paper

Paper

In-flight PSF calibration of the NuSTAR hard X-ray optics

Niels J. Westergaard, Hongjun An, Kristin Madsen, Steven Boggs, Finn Christensen, William Craig, Fiona Harrison, Charles Hailey, Daniel Stern, William Zhang

Proceedings Volume 9144, 91441Q (2014) https://doi.org/10.1117/12.2055481

KEYWORDS: Point spread functions, X-ray optics, Calibration, Hard x-rays, Thermography, Mirrors, Data modeling, Convolution, Space telescopes, X-rays

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Proceedings Article | 24 July 2014 Paper

Paper

Calibration of the Compton Spectrometer and Imager in preparation for the 2014 balloon campaign

C. Kierans, S. Boggs, A. Lowell, J. Tomsick, A. Zoglauer, M. Amman, P. Jean, P. von Ballmoos, J.-L. Chiu, H.-K. Chang, C.-H. Lin, C.-Y. Yang, Y. Chou, Y.-H. Chang, J.-R. Shang, C.-H. Tseng

Proceedings Volume 9144, 91443M (2014) https://doi.org/10.1117/12.2055250

KEYWORDS: Sensors, Calibration, Polarization, Telescopes, Photons, Device simulation, Spatial resolution, Gamma radiation, Germanium, Electronics

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Proceedings Article | 26 September 2013 Paper

Paper

LAUE lens development at UC Berkeley: status and prospects

Lorraine Hanlon, Nicolas Barrière, John Tomsick, Steven Boggs, Colin Wade, Michael Jentschel, Marcelo Ackermann, Peter von Ballmoos, Gilles Roudil, Alexander Lowell, Pierre Bastie

Proceedings Volume 8861, 88610F (2013) https://doi.org/10.1117/12.2026331

KEYWORDS: Crystals, Silicon, Prototyping, Diffraction, Crystallography, Reflectivity, Germanium, Laser crystals, Gamma radiation, Lens design

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Proceedings Article | 26 September 2013 Paper

Paper

Detector and imaging systems for the gamma-ray imager/polarimeter for solar flares (GRIPS) instrument

Nicole Duncan, Albert Shih, Gordon Hurford, Pascal Saint-Hilaire, Andreas Zoglauer, Hazel Bain, Mark Amman, Steven Boggs, Robert Lin

Proceedings Volume 8862, 88620W (2013) https://doi.org/10.1117/12.2024667

KEYWORDS: Sensors, Imaging systems, Solar energy, Imaging spectroscopy, Image sensors, Electronics, Cameras, Gamma radiation, Field programmable gate arrays, Sun

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Proceedings Article | 17 September 2012 Paper

Paper

Prospects for the 2014/2015 Nuclear Compton Telescope balloon campaign

J. Liang, H. Chang, A. Lowell, P. Luke, S. Boggs, A. Zoglauer, N. Barriere, M. Amman, P. Jean, P. von Ballmoos, J. Chiu

Proceedings Volume 8443, 84434U (2012) https://doi.org/10.1117/12.926848

KEYWORDS: Sensors, Telescopes, Germanium, Spatial resolution, Imaging spectroscopy, Signal detection, Polarization, Electroluminescent displays, Atmospheric propagation, Spectroscopy

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Proceedings Article | 17 September 2012 Paper

Paper

The Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS)

Nicole Duncan, Mark Amman, Gordon Hurford, Tadayuki Takahashi, Andreas Zoglauer, David Smith, Hazel Bain, Steven Boggs, Albert Shih, Pascal Saint-Hilaire, Robert Lin, Hiroyasu Tajima

Proceedings Volume 8443, 84434H (2012) https://doi.org/10.1117/12.926450

KEYWORDS: Sensors, Gamma radiation, Electrons, Spatial resolution, Solar processes, Polarization, Imaging systems, Imaging spectroscopy, Spectroscopy, Ions

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Proceedings Article | 12 October 2011 Paper

Paper

Developing a second generation Laue lens prototype: high-reflectivity crystals and accurate assembly

Steven Boggs, Alexander Lowell, Nicolas Barrière, John Tomsick, Peter von Ballmoos

Proceedings Volume 8147, 81471D (2011) https://doi.org/10.1117/12.899893

KEYWORDS: Crystals, Telescopes, Diffraction, Prototyping, Laser crystals, Crystallography, Gamma radiation, Sensors, X-rays, Solid state lighting

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Proceedings Article | 14 September 2011 Paper

Paper

The DUAL mission concept

Jose Alvarez, Tadayuki Takahashi, Margarita Hernanz, Steve Boggs, Jürgen Knödlseder, Mark Leising, Filippo Frontera, Andreas Zoglauer, Andrei Bykov, Roland Walter, Jean-Pierre Prost, Jordi Isern, Peter von Ballmoos, Rui da Silva, Lucien Kuiper, Lorraine Hanlon, Benoît Pirard, Pierre Jean, Juan Manuel Del Cura Velayos, Emmanuel Hinglais, John Tomsick, Nicolas Barriere

Proceedings Volume 8145, 81450E (2011) https://doi.org/10.1117/12.895419

KEYWORDS: Sensors, Crystals, Satellites, Telescopes, Space telescopes, Silver, Imaging systems, Gamma radiation, Space operations, Spatial resolution

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Proceedings Article | 14 September 2011 Paper

Paper

Spectral calibration and modeling of the NuSTAR CdZnTe pixel detectors

Takao Kitaguchi, Brian Grefenstette, Fiona Harrison, Hiromasa Miyasaka, Varun Bhalerao, Andreas Zoglauer, Walter Cook, Peter Mao, Vikram Rana, Steven Boggs

Proceedings Volume 8145, 814507 (2011) https://doi.org/10.1117/12.896972

KEYWORDS: Sensors, Monte Carlo methods, Data modeling, Calibration, Spectral models, Space telescopes, Hard x-rays, Crystals, Clouds, X-ray telescopes

Read Abstract +

Proceedings Article | 27 August 2010 Paper

Paper

Preliminary results from the Spring 2010 balloon campaign of the Nuclear Compton Telescope

Andreas Zoglauer, Jau-Shian Liang, Chih-Hsun Lin, Mark Amman, Zhong-Kai Liu, Daniel Perez-Becker, Ray-Shine Run, Paul Luke, Jeng-Lun Chiu, Cornelia Wunderer, Minghuey Huang, Steven Boggs, Hsiang-Kuang Chang, Wei-Che Hung, Yuan-Hann Chang, Eric Bellm, Mark Bandstra

Proceedings Volume 7805, 780514 (2010) https://doi.org/10.1117/12.860921

KEYWORDS: Sensors, Calibration, Space telescopes, Telescopes, Germanium, Gamma radiation, Electronics, Spectral resolution, Spatial resolution, Computing systems

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Proceedings Article | 30 July 2010 Paper

Paper

Development of efficient Laue lenses: experimental results and projects

Peter von Ballmoos, Julien Rousselle, Steven Boggs, Nicolas Barrière, John Tomsick

Proceedings Volume 7732, 773226 (2010) https://doi.org/10.1117/12.857813

KEYWORDS: Crystals, Prototyping, Space telescopes, Telescopes, Lenses, Gamma radiation, Diffraction, Laser crystals, X-rays, Sensors

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Proceedings Article | 29 July 2010 Paper

Paper

The 2010 balloon campaign of the Nuclear Compton Telescope

Mark Bandstra, Minghuey Huang, Jau-Shian Liang, Eric Bellm, Jeng-Lun Chiu, Ray-Shine Run, Zhong-Kai Liu, Paul Luke, Yuan-Hann Chang, Steven Boggs, Wei-Che Hung, Andreas Zoglauer, Mark Amman, Daniel Perez-Becker, Pierre Jean, Chih-Hsun Lin, Hsiang-Kuang Chang

Proceedings Volume 7732, 773224 (2010) https://doi.org/10.1117/12.857526

KEYWORDS: Sensors, Calibration, Telescopes, Space telescopes, Electronics, Germanium, Gamma radiation, Polarimetry, Signal detection, Magnetometers

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Proceedings Article | 29 July 2010 Paper

Paper

Ground calibrations of Nuclear Compton Telescope

Minghuey Huang, Wei-Che Hung, Eric Bellm, Ray-Shine Run, Andreas Zoglauer, Shiuan-Juang Chiang, Chih-Hsun Lin, Steven Boggs, Jeng-Lun Chiu, Mark Bandstra, Jau-Shian Liang, Daniel Perez-Becker, Paul Luke, Mark Amman, Hsiang-Kuang Chang, Cornelia Wunderer, Yuan-Hann Chang, Zhong-Kai Liu

Proceedings Volume 7732, 77324H (2010) https://doi.org/10.1117/12.857876

KEYWORDS: Calibration, Sensors, Telescopes, Space telescopes, Monte Carlo methods, Gamma radiation, Germanium, Data conversion, 3D metrology, Polarization

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Proceedings Article | 29 July 2010 Paper

Paper

The Nuclear Spectroscopic Telescope Array (NuSTAR)

Allan Hornstrup, Jason Koglin, Matteo Perri, Simonetta Puccetti, Nicolai Brejnholt, W. Rick Cook, Yunjin Kim, David Meier, Carl Christian Liebe, Greg Madejski, William Craig, Melania Doll, Kaya Mori, Daniel Stern, Finn Christensen, Hongjun An, Paolo Giommi, William Zhang, Peter Mao, Andreas Zoglauer, Lorella Angelini, Lynn Cominsky, Charles Hailey, Fiona Harrison, Vikram Rana, Michael Pivovaroff, Varun Bhalerao, Hiromasa Miyasaka, Takeo Kitaguchi, Steve Boggs, Brian Grefenstette, Kristin Kruse Madsen, Vicky Kaspi

Proceedings Volume 7732, 77320S (2010) https://doi.org/10.1117/12.858065

KEYWORDS: Sensors, Space telescopes, Telescopes, X-ray telescopes, Multilayers, Spectroscopy, Hard x-rays, Spectral resolution, Optical alignment, Space operations

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Proceedings Article | 15 July 2008 Paper

Paper

MEGAlib: simulation and data analysis for low-to-medium-energy gamma-ray telescopes

Steven Boggs, Robert Andritschke, Cornelia Wunderer, Andreas Zoglauer, Georg Weidenspointner, Florian Schopper

Proceedings Volume 7011, 70113F (2008) https://doi.org/10.1117/12.789537

KEYWORDS: Sensors, Telescopes, Monte Carlo methods, Space telescopes, Gamma radiation, Data analysis, Device simulation, Particles, Reconstruction algorithms, Image restoration

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Proceedings Article | 17 September 2007 Paper

Paper

Recognition of Compton scattering patterns in advanced Compton telescopes

Steven Boggs, Robert Andritschke, Gottfried Kanbach, Andreas Zoglauer

Proceedings Volume 6700, 67000I (2007) https://doi.org/10.1117/12.738990

KEYWORDS: Sensors, Telescopes, Gamma radiation, Absorption, Compton scattering, Space telescopes, Cameras, Pattern recognition, Kinematics, Doppler effect

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Proceedings Article | 13 June 2006 Paper

Paper

Pre-flight calibration of the prototype Nuclear Compton Telescope

Mark Amman, Pierre Jean, Robert Lin, Peter von Ballmoos, Norman Madden, Steven Boggs, David Smith, Wayne Coburn, Jason Bowen, Paul Luke, Mark Bandstra, William Craig, Cornelia Wunderer, Morgan Burks

Proceedings Volume 6266, 626625 (2006) https://doi.org/10.1117/12.672252

KEYWORDS: Calibration, Sensors, Monte Carlo methods, Germanium, Telescopes, Prototyping, Cesium, Gamma radiation, Spectral resolution, Data acquisition

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Proceedings Article | 13 June 2006 Paper

Paper

The Advanced Compton Telescope

Matthew Baring, James Ryan, Dieter Hartmann, Charles Dermer, Uwe Oberlack, David Smith, Peter Milne, Alexei Klimenk, Neil Gehrels, Margarita Hernanz, Andrew Hoover, Peter Bloser, Georg Weidenspointner, Bernard Phlips, Elena Novikova, Sumner Starrfield, Mark Polsen, John Beacom, Marc Leising, Marc Kippen, Steven Sturner, Derek Tournear, Mark McConnell, Lars Bildsten, Allen Zych, Michael Harris, Steven Boggs, Dan Kocevski, Cornelia Wunderer, Elena Aprile, James Kurfess, Andreas Zoglauer, Eric Wulf

Proceedings Volume 6266, 626624 (2006) https://doi.org/10.1117/12.670605

KEYWORDS: Sensors, Silicon, Nickel, Gamma radiation, Germanium, Space telescopes, Telescopes, Stars, Galactic astronomy, Photons

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Proceedings Article | 13 June 2006 Paper

Paper

Germanium (Compton) focal plane detectors for gamma-ray lenses

Nicolas Barrière, Niels Lund, Steven Boggs, Hubert Halloin, Georg Weidenspointner, Jürgen Knödlseder, Andreas Zoglauer, Peter Ballmoos, Cornelia Wunderer

Proceedings Volume 6266, 626629 (2006) https://doi.org/10.1117/12.672128

KEYWORDS: Sensors, Germanium, Gamma radiation, Photons, Crystals, Space operations, Telescopes, Space telescopes, Lenses, Electronics

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Proceedings Article | 18 August 2005 Paper

Paper

First results from the balloon flight of the NCT prototype

Steven Boggs, Mark Bandstra, Norman Madden, David Smith, Peter von Ballmoos, Morgan Burks, Paul Luke, Jason Bowen, Pierre Jean, William Craig, Mark Amman, Wayne Coburn, Robert Lin

Proceedings Volume 5898, 589802 (2005) https://doi.org/10.1117/12.615876

KEYWORDS: Sensors, Prototyping, Electronics, Polarization, Telescopes, Analog electronics, Imaging spectroscopy, Calibration, Space telescopes, Spectral resolution

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Proceedings Article | 3 February 2004 Paper

Paper

Preliminary laboratory performance of the NCT prototype flight electronics

David Smith, Norman Madden, Robert Lin, Morgan Burkes, Paul Luke, Klaus Ziock, Mark Amman, Wayne Coburn, William Craig, Steven Boggs, Julia Kregenow, Jason Bowen, Peter von Ballmoos, Pierre Jean

Proceedings Volume 5165, (2004) https://doi.org/10.1117/12.506037

KEYWORDS: Sensors, Electronics, Prototyping, Telescopes, Germanium, Polarization, Spectral resolution, Calibration, Imaging spectroscopy, Optical instrument design

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Proceedings Article | 11 March 2003 Paper

Paper

High-resolution spectroscopic imaging (HSI) mission

Philip Pinto, Neil Gehrels, William Craig, Stanford Woosley, Steven Boggs, Jonathan Grindlay, David Windt, C. M. Chen, Charles Hailey, Steven Thorsett, Fiona Harrison, Finn Christensen, Jack Tueller

Proceedings Volume 4851, (2003) https://doi.org/10.1117/12.461280

KEYWORDS: Spectral resolution, Gamma radiation, Sensors, Imaging spectroscopy, X-rays, Spectroscopes, Telescopes, Solid state electronics, Germanium, Galactic astronomy

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Proceedings Article | 11 March 2003 Paper

Paper

Upcoming balloon flight of the nuclear Compton telescope

Peter von Ballmoos, David Smith, Morgan Burks, Pierre Jean, William Craig, Steven Boggs, Paul Luke, Susan Amrose, Mark Amman, Norman Madden, Wayne Coburn, Klaus Ziock, Ethan Hull, Robert Lin

Proceedings Volume 4851, (2003) https://doi.org/10.1117/12.461144

KEYWORDS: Prototyping, Telescopes, Sensors, Space telescopes, Polarization, Germanium, Gamma radiation, Optical instrument design, Spectral resolution, Spatial resolution

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Proceedings Article | 10 January 2003 Paper

Paper

3D positioning germanium detectors for gamma-ray astronomy

Norman Madden, Robert Lin, Paul Luke, Susan Amrose, Steven Boggs, Ethan Hull, Morgan Burks, Wayne Coburn, Mark Amman

Proceedings Volume 4784, (2003) https://doi.org/10.1117/12.450828

KEYWORDS: Sensors, Calibration, Germanium, Electrodes, Spectral resolution, Monte Carlo methods, Prototyping, Electronics, Telescopes, Signal detection

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Proceedings Article | 13 December 2000 Paper

Paper

Cyclone Hard X-Ray Observatory

David Smith, Juergen Knoedlseder, Gordon Hurford, Steven Boggs, Peter von Ballmoos, Robyn Millan, Knud Thomsen, Norman Madden, Kevin Hurley, Brian Dennis, Robert Lin, Pierre Jean

Proceedings Volume 4140, (2000) https://doi.org/10.1117/12.409159

KEYWORDS: Modulation, Sensors, Hard x-rays, Spectral resolution, Spatial resolution, Space operations, Observatories, Electronics, Imaging spectroscopy, Satellites

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Proceedings Article | 21 November 2000 Paper

Paper

Optimal contact geometry for CdZnTe pixel detectors

Fiona Harrison, Walter Cook, C. M. Hubert Chen, Steven Boggs, Steven Schindler, Aleksey Bolotnikov

Proceedings Volume 4141, (2000) https://doi.org/10.1117/12.407587

KEYWORDS: Sensors, Electrons, Electrodes, Diffusion, Collimation, Semiconductors, Image resolution, X-rays, Interference (communication), Silicon

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Proceedings Article | 21 November 2000 Paper

Paper

Development of CdZnTe pixel detectors for astrophysical applications

Walter Cook, Steven Boggs, Steven Schindler, C. M. Hubert Chen, Fiona Harrison, Aleksey Bolotnikov

Proceedings Volume 4141, (2000) https://doi.org/10.1117/12.407574

KEYWORDS: Sensors, Hard x-rays, Prototyping, Spectral resolution, Space telescopes, X-ray telescopes, Image resolution, Telescopes, Very large scale integration, X-rays

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Proceedings Article | 18 July 2000 Paper

Paper

Development of the High-Energy Focusing Telescope (HEFT) balloon experiment

Steven Schindler, Walter Cook, Fiona Harrison, William Craig, Finn Christensen, Mario Jimenez-Garate, Aleksey Bolotnikov, David Windt, Steven Boggs, Peter Mao, Charles Hailey

Proceedings Volume 4012, (2000) https://doi.org/10.1117/12.391608

KEYWORDS: Sensors, Multilayers, Imaging spectroscopy, Mirrors, Reflectivity, Hard x-rays, X-ray optics, Prototyping, Space telescopes, X-ray telescopes

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Proceedings Article | 18 July 2000 Paper

Paper

Grazing incidence optics designs for future gamma-ray missions

Finn Christensen, Charles Hailey, Thomas Prince, David Windt, James Chakan, Peter Mao, William Craig, Steven Boggs, Fiona Harrison

Proceedings Volume 4012, (2000) https://doi.org/10.1117/12.391563

KEYWORDS: Mirrors, Gamma radiation, Space telescopes, Telescopes, Grazing incidence, Optical instrument design, Multilayers, Spatial resolution, X-ray telescopes, Optical design

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Proceedings Article | 1 October 1999 Paper

Paper

First test results from a high-resolution CdZnTe pixel detector with VLSI readout

Walter Cook, Fiona Harrison, Jill Burnham, Steven Schindler, Aleksey Bolotnikov, Brian Matthews, Steven Boggs, Michael Fitzsimmons, Branislav Kecman

Proceedings Volume 3769, (1999) https://doi.org/10.1117/12.363688

KEYWORDS: Sensors, Very large scale integration, Monte Carlo methods, Prototyping, Collimation, Image resolution, Indium, Diffusion, Amplifiers, Americium

Read Abstract +

We are developing a CdZnTe pixel detector with a custom low- noise analog VLSI readout for use in the High-Energy Focusing Telescope balloon experiment, as well as for future space astronomy applications. The goal of the program is to achieve good energy resolution (< 1 keV FWHM at 60 keV) and low threshold in a sensor with approximately 500 micrometers pixels. We have fabricated several prototype detector assemblies with 2 mm thick, 680 by 650 micrometers pitch CdZnTe pixel sensors indium bump bonded a VLSI readout chip developed at Caltech. Each readout circuit in the 8 X 8 prototype is matched to the detector pixel size, and contains a preamplifier, shaping amplifiers, and a peak stretcher/discriminator. In the first 8 X 8 prototype, we have demonstrated the low-noise preamplifier by routing the output signals off-chip for shaping and pulse-height analysis. Pulse height spectra obtained using a ²⁴¹Am source, collimated to illuminate a single pixel, show excellent energy resolution of 1.1 keV FWHM for the 60 keV line at room temperature. Line profiles are approximately Gaussian and dominated by electronic noise, however a small low energy tail is evident for the 60 keV line. We obtained slightly improved resolution of 0.9 keV FWHM at 60 keV by cooling the detector to 5 degree(s)C, near the expected balloon- flight operating temperature. Pulse height spectra obtained with the collimated source positioned between pixels show the effect of signal sharing for events occurring near the boundary. We are able to model the observed spectra using a Monte-Carlo simulation that includes the effects of photon interaction, charge transport and diffusion, pixel and collimator geometry, and electronic noise. By using the model to simulate the detector response to uncollimated radiation (including the effect of finite trigger threshold for reconstruction of the total energy of multi-pixel events), we find the energy resolution to be degraded by only 10% for full-face illumination, compared to the collimated case. The small value of the degradation is due directly to the low readout noise and amplifier threshold.

Proceedings Article | 1 October 1999 Paper

Paper

Use of a pulsed laser to study properties of CdZnTe pixel detectors

Aleksey Bolotnikov, Walter Cook, Steven Schindler, Steven Boggs, Fiona Harrison

Proceedings Volume 3769, (1999) https://doi.org/10.1117/12.363691

KEYWORDS: Sensors, Pulsed laser operation, X-rays, Signal detection, Diffusion, Particles, Signal attenuation, Tunable lasers, Collimation, Electric field sensors

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Proceedings Article | 18 October 1996 Paper

Paper

Laboratory tests and simulations of pulse shape discrimination (PSD) technique for background reduction in germanium gamma-ray detectors

Said Slassi-Sennou, Steven Boggs, Norman Madden, Don Malone, Henry Primbsch, Robert Lin, Richard Pehl, Robert Campbell, Steven McBride, Bryon Philhour, Paul Luke, Chris Cork, Paul Feffer, Fred Goulding

Proceedings Volume 2806, (1996) https://doi.org/10.1117/12.254020

KEYWORDS: Sensors, Germanium, Gamma radiation, Shape analysis, Electronics, Signal detection, Spectrometers, Atmospheric particles, Monte Carlo methods, Space operations

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Proceedings Article | 16 September 1994 Paper

Paper

Progress on the Scintillation Imaging Gas-filled Hard X-ray Telescope (SIGHT)

Steven Boggs, Shimon Weiss, Bernard Sadoulet, Ann Parsons, Jeff Wilkerson, R. Therrien, Timothy Edberg, Paul Shestople, Garth Smith

Proceedings Volume 2280, (1994) https://doi.org/10.1117/12.186827

KEYWORDS: Scintillation, Xenon, Optical fibers, Sensors, Calibration, Hard x-rays, Ultraviolet radiation, Quantum efficiency, Scintillation imaging, Photons

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Showing 5 of 41 publications

Conference Committee Involvement (9)

Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray

14 December 2020 | Online Only, California, United States

Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray

10 June 2018 | Austin, Texas, United States

Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray

26 June 2016 | Edinburgh, United Kingdom

Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray Posters

26 June 2016 | Edinburgh, United Kingdom

Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray

22 June 2014 | Montréal, Quebec, Canada

Showing 5 of 9 Conference Committees

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