Dr. Alireza Kargar Profile

Dr. Alireza Kargar

Senior Scientist at Radiation Monitoring Devices Inc

SPIE Involvement:

Conference Program Committee | Author

Proceedings Article | 4 October 2024 Presentation

Performance characterization of 5x5x12 mm3 virtual Frisch-Grid TlBr detectors

Aleksey Bolotnikov, Conner Brown, Gabriella Carini, James Christian, Leonard Cirignano, Connie-Rose Deane, Alfred Dellapenna, Jack Fried, Sven Herrmann, Alireza Kargar, Hadong Kim, Michael Koslowsky, Piotr Maj, Vamshi Manthena, Alexander Miller, Sandeep Miryala, Andrea Norris, Yaroslav Ogorodnik, Giovanni Pinaroli, Eric Raguzin, Martin Smith, Mike Squillante, Joshua Tower, Andrew Valente, Evan Weststrate, Kanai Shah

Proceedings Volume PC13151, PC131510D (2024) https://doi.org/10.1117/12.3029913

KEYWORDS: Sensors, Weapons of mass destruction, Homeland security, System identification, Polarization, Platinum, Ions, Electric field sensors, Detector arrays, Defect detection

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Proceedings Article | 4 October 2022 Presentation + Paper

Improved performance and longevity of large volume thallium bromide devices

H. Kim, L. Cirignano, J. F. Christian, A. Kargar, Y. Ogorodnik, S. Kim, M. Breen, M. R. Squillante, K. Shah

Proceedings Volume 12241, 1224106 (2022) https://doi.org/10.1117/12.2635925

KEYWORDS: Sensors, Cesium, Thallium, Semiconductors, Gamma radiation, Spectroscopy, Signal detection, Sensor performance, Amplifiers, Signal generators

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Proceedings Article | 4 October 2022 Presentation + Paper

Thermal neutron detection with lithium-based semiconductors

Alireza Kargar, Huicong Hong, Joshua Tower, Paul Guggenheim, Eric Qian, Conner Brown, Mathew Breen, James Christian, Kanai Shah, Eric Lukosi, Robert Golduber, Jake Gallagher, Amine Benkechkache, Mercouri Kanatzidis, Michael Squillante

Proceedings Volume 12241, 1224108 (2022) https://doi.org/10.1117/12.2632318

KEYWORDS: Sensors, Crystals, Lithium, Semiconductors, Transmittance, Gold, Gamma radiation, Selenium, Electrons, Semiconducting wafers

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Proceedings Article | 3 October 2022 Presentation

Performance characterizations of position-sensitive virtual Frisch-grid TlBr detectors (Conference Presentation)

Aleksey Bolotnikov, Conner Brown, Gabriella Carini, James Christian, Leonard Cirignano, Connie-Rose Deane, Alfred Dellapenna, Grzegorz Deptuch, Jack Fried, Sven Herrmann, Hadong Kim, Giovanni Pinaroli, Alireza Kargar, Martin Koslowsky, Piotr Maj, Victor Manthena, Alexander Miller, Sandeep Miriala, Eric Raguzina, Kanai Shah, Michael Squillante, Martin Smith, Andrew Valente, Evan Weststrate

Proceedings Volume PC12241, PC122410D (2022) https://doi.org/10.1117/12.2635899

KEYWORDS: Sensors, Crystals, Semiconductors, Semiconductor materials, Ions, Gamma radiation, Electric field sensors

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Proceedings Article | 13 September 2018 Presentation + Paper

CVD diamond for beta particle detection in a gamma-ray background

Paul Bennett, Alireza Kargar, Leonard Cirignano, Hadong Kim, Kanai Shah

Proceedings Volume 10762, 107620Z (2018) https://doi.org/10.1117/12.2323695

KEYWORDS: Sensors, Diamond, Particles, Krypton, Gamma radiation, Cesium, Crystals, Strontium, Temperature metrology, Electronics

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Proceedings Article | 26 August 2015 Paper

Neutron detection with LiInSe2

Zane Bell, A. Burger, Liviu Matei, Michael Groza, Ashley Stowe, Joshua Tower, Alireza Kargar, Huicong Hong

Proceedings Volume 9593, 95930D (2015) https://doi.org/10.1117/12.2189418

KEYWORDS: Sensors, Crystals, Gamma radiation, Semiconductors, Cadmium, Particles, Silicon, Lithium, Lead, Electronics

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Proceedings Article | 4 September 2014 Paper

The effect of guard ring on leakage current and spectroscopic performance of TlBr planar detectors

Alireza Kargar, Hadong Kim, Leonard Cirignano, Kanai Shah

Proceedings Volume 9215, 92150E (2014) https://doi.org/10.1117/12.2065908

KEYWORDS: Sensors, Electrodes, Spectroscopes, Gamma radiation, Thallium, Ceramics, Crystals, Amplifiers, Pulse generators, Active remote sensing

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Proceedings Article | 26 September 2013 Paper

Boron selenide semiconductor detectors for thermal neutron counting

Alireza Kargar, Joshua Tower, Leonard Cirignano, Kanai Shah

Proceedings Volume 8852, 88521M (2013) https://doi.org/10.1117/12.2027078

KEYWORDS: Sensors, Gamma radiation, Boron, Carbon, Crystals, Semiconductors, Absorption, Particles, Crystallography, Selenium

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Proceedings Article | 17 October 2012 Paper

Application of TlBr to nuclear medicine imaging

Leonard Cirignano, Hadong Kim, Alireza Kargar, Alexei Churilov, Guido Ciampi, William Higgins, Suyoung Kim, Bradford Barber, Kyle Haston, Kanai Shah

Proceedings Volume 8508, 850803 (2012) https://doi.org/10.1117/12.961447

KEYWORDS: Sensors, Single photon emission computed tomography, Crystals, Semiconductors, Gamma radiation, Solids, Signal attenuation, Scintillators, Nuclear medicine, Semiconductor materials

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Proceedings Article | 28 September 2011 Paper

Lithium and boron based semiconductors for thermal neutron counting

Alireza Kargar, Joshua Tower, Huicong Hong, Leonard Cirignano, William Higgins, Kanai Shah

Proceedings Volume 8142, 81421P (2011) https://doi.org/10.1117/12.899363

KEYWORDS: Sensors, Gamma radiation, Boron, Crystals, Semiconductors, Lithium, Absorption, Chemical species, Selenium, Carbon

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Proceedings Article | 3 September 2010 Paper

Continued development of room temperature semiconductor nuclear detectors

Hadong Kim, Leonard Cirignano, Alexei Churilov, Guido Ciampi, Alireza Kargar, William Higgins, Patrick O'Dougherty, Suyoung Kim, Michael Squillante, Kanai Shah

Proceedings Volume 7806, 780604 (2010) https://doi.org/10.1117/12.864147

KEYWORDS: Sensors, Mercury, Semiconductors, Gamma radiation, Spectroscopy, Crystals, Electrodes, Temperature metrology, Amplifiers, Thallium

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Proceedings Article | 12 September 2009 Paper

Uniformity of charge collection efficiency in Frisch collar spectrometer with THM grown CdZnTe crystals

Alireza Kargar, Adam Brooks, Mark Harrison, Henry Chen, Salah Awadalla, Glenn Bindley, Bob Redden, Douglas McGregor

Proceedings Volume 7449, 744908 (2009) https://doi.org/10.1117/12.826422

KEYWORDS: Gamma radiation, Sensors, Dielectrics, Electrodes, Collimation, Electrons, Spectroscopes, Crystals, Spectroscopy, Electric field sensors

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Proceedings Article | 4 September 2008 Paper

Final surface treatment effect on performance of CdZnTe Frisch collar gamma-ray detectors

Alireza Kargar, Adam Brooks, Kyle Kohman, Rans Lowell, Roger Keyes, Henry Chen, Salah Awadalla, Glenn Bindley, Douglas McGregor

Proceedings Volume 7079, 70790B (2008) https://doi.org/10.1117/12.795366

KEYWORDS: Sensors, Surface finishing, Ions, Sensor performance, Polishing, Resistance, Gamma radiation, Spectroscopes, Gold, Amplifiers

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Proceedings Article | 24 September 2007 Paper

The crystal geometry and the aspect ratio effects on spectral performance of CdZnTe Frisch collar device

Alireza Kargar, Rans Lowell, Mark Harrison, Douglas McGregor

Proceedings Volume 6706, 67061J (2007) https://doi.org/10.1117/12.740472

KEYWORDS: Sensors, Americium, Cesium, Crystals, Gamma radiation, Resolution enhancement technologies, Electrodes, Aluminum, Polishing, Copper

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Showing 5 of 14 publications

Conference Committee Involvement (2)

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXVII

3 August 2025 | San Diego, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXVI

19 August 2024 | San Diego, California, United States

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