Pub Date : 2005-11-09DOI: 10.1109/NSSMIC.2005.1596261
W. Raas, B. Blackburn, E. Boyd, J. Hall, G. Kohse, R. Lanza, B. Rusnak, J. Watterson
A high pressure deuterium gas target has been designed to provide high-flux fast neutrons using the D(d,n)3He reaction for use as a neutron source. The deuterium gas cell holds 4 atm D2 gas at 298 K and is projected to tolerate a beam current of ~50 muA of 3.0 MeV deuterons for 8 hours of continuous use. The high-pressure gas cell is designed to provide a fast neutron flux on the order of 105 n/cm2-s at one meter. Measurements of gamma ray production from deuterium impingement have shown tungsten to generate the fewest gamma rays; the primary components of the gas target have been constructed out of tungsten to decrease the number of gamma rays. To accommodate the high gas pressure, thin foil tungsten windows have been structurally reinforced with a tungsten support allowing for more than 60% beam transmission while greatly increasing the structural reliability of the thin windows. Extensive simulation and experimental testing have demonstrated the heating tolerances of the gas target thin windows and have shown that the peak temperature of the thin foils does not exceed 600degC, while the edges of the foil do not exceed 100degC, well within the limits of the foil windows and the gas sealing structures
{"title":"Design and testing of a high pressure gas target for fast neutron resonance radiography","authors":"W. Raas, B. Blackburn, E. Boyd, J. Hall, G. Kohse, R. Lanza, B. Rusnak, J. Watterson","doi":"10.1109/NSSMIC.2005.1596261","DOIUrl":"https://doi.org/10.1109/NSSMIC.2005.1596261","url":null,"abstract":"A high pressure deuterium gas target has been designed to provide high-flux fast neutrons using the D(d,n)3He reaction for use as a neutron source. The deuterium gas cell holds 4 atm D2 gas at 298 K and is projected to tolerate a beam current of ~50 muA of 3.0 MeV deuterons for 8 hours of continuous use. The high-pressure gas cell is designed to provide a fast neutron flux on the order of 105 n/cm2-s at one meter. Measurements of gamma ray production from deuterium impingement have shown tungsten to generate the fewest gamma rays; the primary components of the gas target have been constructed out of tungsten to decrease the number of gamma rays. To accommodate the high gas pressure, thin foil tungsten windows have been structurally reinforced with a tungsten support allowing for more than 60% beam transmission while greatly increasing the structural reliability of the thin windows. Extensive simulation and experimental testing have demonstrated the heating tolerances of the gas target thin windows and have shown that the peak temperature of the thin foils does not exceed 600degC, while the edges of the foil do not exceed 100degC, well within the limits of the foil windows and the gas sealing structures","PeriodicalId":105619,"journal":{"name":"IEEE Nuclear Science Symposium Conference Record, 2005","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121540084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-11-08DOI: 10.1109/NSSMIC.2005.1596457
K. Ziock, G. Caffrey, A. Lebrun, L. Forman, P. Vanier, J. Wharton
We report the results of a measurement campaign conducted on six dry-storage, spent-nuclear-fuel storage casks at the Idaho National Laboratory. A gamma-ray imager, a thermal-neutron imager and a Ge-spectrometer were used to collect data. The campaign was conducted to examine the feasibility of using cask radiation signatures as unique identifiers for individual casks as part of a safeguards regime. The results clearly show different morphologies for the various cask types although the signatures are deemed insufficient to uniquely identify individual casks of the same type. Based on results with the Ge-spectrometer and differences between thermal neutron images and neutron-dose meters, this result is attributed to the limitations of the extant imagers used, rather than of the basic concept.
{"title":"Radiation imaging of dry-storage casks for nuclear fuel","authors":"K. Ziock, G. Caffrey, A. Lebrun, L. Forman, P. Vanier, J. Wharton","doi":"10.1109/NSSMIC.2005.1596457","DOIUrl":"https://doi.org/10.1109/NSSMIC.2005.1596457","url":null,"abstract":"We report the results of a measurement campaign conducted on six dry-storage, spent-nuclear-fuel storage casks at the Idaho National Laboratory. A gamma-ray imager, a thermal-neutron imager and a Ge-spectrometer were used to collect data. The campaign was conducted to examine the feasibility of using cask radiation signatures as unique identifiers for individual casks as part of a safeguards regime. The results clearly show different morphologies for the various cask types although the signatures are deemed insufficient to uniquely identify individual casks of the same type. Based on results with the Ge-spectrometer and differences between thermal neutron images and neutron-dose meters, this result is attributed to the limitations of the extant imagers used, rather than of the basic concept.","PeriodicalId":105619,"journal":{"name":"IEEE Nuclear Science Symposium Conference Record, 2005","volume":"63 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120888134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-11-07DOI: 10.1109/NSSMIC.2005.1596260
M. Cunningham, M. Burks, D. Chivers, C. Cork, L. Fabris, D. Gunter, T. Krings, D. Lange, E. Hull, L. Mihailescu, K. Nelson, T. Niedermayr, D. Protic, J. Valentine, K. Vetter, D. Wright
At Lawrence Livermore National Laboratory, we are pursuing the development of a gamma-ray imaging system using the Compton effect. We have built our first generation hybrid Compton imaging system, and we have conducted initial calibration and image measurements using this system. In this paper, we present the details of the hybrid Compton imaging system and initial calibration and image measurements
{"title":"First-generation hybrid compact Compton imager","authors":"M. Cunningham, M. Burks, D. Chivers, C. Cork, L. Fabris, D. Gunter, T. Krings, D. Lange, E. Hull, L. Mihailescu, K. Nelson, T. Niedermayr, D. Protic, J. Valentine, K. Vetter, D. Wright","doi":"10.1109/NSSMIC.2005.1596260","DOIUrl":"https://doi.org/10.1109/NSSMIC.2005.1596260","url":null,"abstract":"At Lawrence Livermore National Laboratory, we are pursuing the development of a gamma-ray imaging system using the Compton effect. We have built our first generation hybrid Compton imaging system, and we have conducted initial calibration and image measurements using this system. In this paper, we present the details of the hybrid Compton imaging system and initial calibration and image measurements","PeriodicalId":105619,"journal":{"name":"IEEE Nuclear Science Symposium Conference Record, 2005","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130009714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-11-01DOI: 10.1109/NSSMIC.2005.1596558
A. Pla-Dalmau, A. Bross, V. Rykalin, B. Wood
An extrusion line has recently been installed at Fermilab in collaboration with NICADD (Northern Illinois Center for Accelerator and Detector Development). This new facility will serve to further develop and improve extruded plastic scintillator. Since polystyrene is widely used in the consumer industry, the logical path was to investigate the extrusion of commercial-grade polystyrene pellets with dopants to yield high quality plastic scintillator. The D0 and MINOS experiments are already using extruded scintillator strips in their detectors. A new experiment at Fermilab is pursuing the use of extruded plastic scintillator. A new plastic scintillator strip is being tested and its properties characterized. The initial results are presented here.
{"title":"Extruded plastic scintillator for MINERvA","authors":"A. Pla-Dalmau, A. Bross, V. Rykalin, B. Wood","doi":"10.1109/NSSMIC.2005.1596558","DOIUrl":"https://doi.org/10.1109/NSSMIC.2005.1596558","url":null,"abstract":"An extrusion line has recently been installed at Fermilab in collaboration with NICADD (Northern Illinois Center for Accelerator and Detector Development). This new facility will serve to further develop and improve extruded plastic scintillator. Since polystyrene is widely used in the consumer industry, the logical path was to investigate the extrusion of commercial-grade polystyrene pellets with dopants to yield high quality plastic scintillator. The D0 and MINOS experiments are already using extruded scintillator strips in their detectors. A new experiment at Fermilab is pursuing the use of extruded plastic scintillator. A new plastic scintillator strip is being tested and its properties characterized. The initial results are presented here.","PeriodicalId":105619,"journal":{"name":"IEEE Nuclear Science Symposium Conference Record, 2005","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114691536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-11-01DOI: 10.1109/NSSMIC.2005.1596292
A. Garson, I. Jung, J. Perkins, H. Krawczynski
Using 2/spl times/2/spl times/0.5 cm/sup 3/ cadmium telluride (CdTe) substrates from the company Acrorad, we have fabricated detectors with planar cathode contacts and 8/spl times/8 anode pixels. We investigate the I-V characteristics and energy resolution of the detectors for different contact materials and surface treatments. After biasing the detectors for a certain time, the dark currents increase dramatically. Our studies show that the time before breakdown decreases for higher detector temperatures and for higher applied bias voltages. We obtained the best results with a Pt cathode contact and In anode pixels when we heat the detector to 90/spl deg/C for 30 minutes prior to depositing the In contacts. Flood-illuminating the detector with 662 keV X-rays, we measured the pulse length distribution and derived an electron mobility of /spl sim/860 cm/sup 2/ V/sup -1/s/sup -1/. We show that the energy resolution can be improved by correcting the anode signals for the depth of the primary interaction. Operated at a temperature of -40/spl deg/C and a cathode bias voltage of -500 V, the best pixels of the best detector achieved full width half maximum (FWHM) energy resolutions of 8 keV (6.4%) and 23 keV (3.4%) at 122 keV and 662 keV, respectively.
{"title":"Evaluation of 5 mm-thick CdTe detectors from the company Acrorad","authors":"A. Garson, I. Jung, J. Perkins, H. Krawczynski","doi":"10.1109/NSSMIC.2005.1596292","DOIUrl":"https://doi.org/10.1109/NSSMIC.2005.1596292","url":null,"abstract":"Using 2/spl times/2/spl times/0.5 cm/sup 3/ cadmium telluride (CdTe) substrates from the company Acrorad, we have fabricated detectors with planar cathode contacts and 8/spl times/8 anode pixels. We investigate the I-V characteristics and energy resolution of the detectors for different contact materials and surface treatments. After biasing the detectors for a certain time, the dark currents increase dramatically. Our studies show that the time before breakdown decreases for higher detector temperatures and for higher applied bias voltages. We obtained the best results with a Pt cathode contact and In anode pixels when we heat the detector to 90/spl deg/C for 30 minutes prior to depositing the In contacts. Flood-illuminating the detector with 662 keV X-rays, we measured the pulse length distribution and derived an electron mobility of /spl sim/860 cm/sup 2/ V/sup -1/s/sup -1/. We show that the energy resolution can be improved by correcting the anode signals for the depth of the primary interaction. Operated at a temperature of -40/spl deg/C and a cathode bias voltage of -500 V, the best pixels of the best detector achieved full width half maximum (FWHM) energy resolutions of 8 keV (6.4%) and 23 keV (3.4%) at 122 keV and 662 keV, respectively.","PeriodicalId":105619,"journal":{"name":"IEEE Nuclear Science Symposium Conference Record, 2005","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122546865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-11-01DOI: 10.1109/NSSMIC.2005.1596446
R. Tesarek, S. D'Auria, P. Dong, A. Hocker, K. Kordas, S. Mcgimpsey, L. Nicolas, R. Wallny, W. Schmitt, S. Worm
We present an overview of radiation induced failures and operational experiences from the Collider Detector at Fermilab (CDF). In our summary, we examine single event effects (SEE) in electronics located in and around the detector. We present results of experiments to identify the sources and composition of the radiation and steps to reduce the rate of SEEs in our electronics. Our studies have led to a better, more complete understanding of the radiation environment in a modern hadron collider experiment
{"title":"Single event effects and their mitigation for the Collider Detector at Fermilab","authors":"R. Tesarek, S. D'Auria, P. Dong, A. Hocker, K. Kordas, S. Mcgimpsey, L. Nicolas, R. Wallny, W. Schmitt, S. Worm","doi":"10.1109/NSSMIC.2005.1596446","DOIUrl":"https://doi.org/10.1109/NSSMIC.2005.1596446","url":null,"abstract":"We present an overview of radiation induced failures and operational experiences from the Collider Detector at Fermilab (CDF). In our summary, we examine single event effects (SEE) in electronics located in and around the detector. We present results of experiments to identify the sources and composition of the radiation and steps to reduce the rate of SEEs in our electronics. Our studies have led to a better, more complete understanding of the radiation environment in a modern hadron collider experiment","PeriodicalId":105619,"journal":{"name":"IEEE Nuclear Science Symposium Conference Record, 2005","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117236216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-11-01DOI: 10.1109/NSSMIC.2005.1596237
I. Jung, A. Garson, J. Perkins, H. Krawczynski, J. Matteson, R. Skelton, A. Burger, M. Groza
We explore the possibility to improve the performance of 0.5 cm thick cadmium zinc telluride (CZT) detectors with the help of steering grids on the anode side of the detectors. Steering grids can improve the energy resolution of CZT detectors by enhancing the small pixel effect; furthermore, they can increase their detection efficiency by steering electrons to the anode pixels which otherwise would drift to the area between pixels. Previously, the benefit of steering grids had been compromised by additional noise associated with currents between the steering grids and the anode pixels. We use thin film deposition techniques to isolate the steering grid from the CZT substrate by a 150 nm thick layer of the isolator Al2O3. While the thin layer does not affect the beneficial effect of the steering grid on the weighting potentials and the electric field inside the detector, it suppresses the currents between the steering grid and the anode pixels. In this contribution, we present first results from a 2times2times0.5 cm3 CZT detector with 8times8 pixels that we tested before and after deposition of an isolated steering grid. The steering grid improves the 662 keV energy resolution of the detector by a factor of 1.3 (from about 2% to about 1.5%), while not reducing the detection efficiency. To gain further insights into the detector response in the region between pixels, we measured energy spectra with a collimated 137Cs source. The collimator measurements can be used to enhance our understanding of energy spectra measured under flood illumination of the detectors
{"title":"Thick pixelated CZT detectors with isolated steering grids","authors":"I. Jung, A. Garson, J. Perkins, H. Krawczynski, J. Matteson, R. Skelton, A. Burger, M. Groza","doi":"10.1109/NSSMIC.2005.1596237","DOIUrl":"https://doi.org/10.1109/NSSMIC.2005.1596237","url":null,"abstract":"We explore the possibility to improve the performance of 0.5 cm thick cadmium zinc telluride (CZT) detectors with the help of steering grids on the anode side of the detectors. Steering grids can improve the energy resolution of CZT detectors by enhancing the small pixel effect; furthermore, they can increase their detection efficiency by steering electrons to the anode pixels which otherwise would drift to the area between pixels. Previously, the benefit of steering grids had been compromised by additional noise associated with currents between the steering grids and the anode pixels. We use thin film deposition techniques to isolate the steering grid from the CZT substrate by a 150 nm thick layer of the isolator Al2O3. While the thin layer does not affect the beneficial effect of the steering grid on the weighting potentials and the electric field inside the detector, it suppresses the currents between the steering grid and the anode pixels. In this contribution, we present first results from a 2times2times0.5 cm3 CZT detector with 8times8 pixels that we tested before and after deposition of an isolated steering grid. The steering grid improves the 662 keV energy resolution of the detector by a factor of 1.3 (from about 2% to about 1.5%), while not reducing the detection efficiency. To gain further insights into the detector response in the region between pixels, we measured energy spectra with a collimated 137Cs source. The collimator measurements can be used to enhance our understanding of energy spectra measured under flood illumination of the detectors","PeriodicalId":105619,"journal":{"name":"IEEE Nuclear Science Symposium Conference Record, 2005","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131423443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-11-01DOI: 10.1109/NSSMIC.2005.1596302
R. Aryaeinejad, J. Hartwell, D. F. Spencer
Recent advancements in digital signal processing (DSP) using fast processors and a computer allows one to envision using it in pulse shape discrimination. In this study, we have investigated the feasibility of using a DSP to distinguish between neutrons and gamma rays by the shape of their pulses in a liquid scintillator detector (BC501). For neutron/gamma discrimination, the advantage of using a DSP over the analog method is that in an analog system, two separate charge-sensitive ADCs are required. One ADC is used to integrate the beginning of the pulse rise time while the second ADC is for integrating the tail part. In DSP techniques the incoming pulses coming directly from the detector are immediately digitized and can be decomposed into individual pulses waveforms. This eliminates the need for separate ADCs as one can easily get the integration of two parts of the pulse from the digital waveforms. This work describes the performance of these DSP techniques and compares the results with the analog method.
{"title":"Comparison between digital and analog pulse shape discrimination techniques for neutron and gamma ray separation","authors":"R. Aryaeinejad, J. Hartwell, D. F. Spencer","doi":"10.1109/NSSMIC.2005.1596302","DOIUrl":"https://doi.org/10.1109/NSSMIC.2005.1596302","url":null,"abstract":"Recent advancements in digital signal processing (DSP) using fast processors and a computer allows one to envision using it in pulse shape discrimination. In this study, we have investigated the feasibility of using a DSP to distinguish between neutrons and gamma rays by the shape of their pulses in a liquid scintillator detector (BC501). For neutron/gamma discrimination, the advantage of using a DSP over the analog method is that in an analog system, two separate charge-sensitive ADCs are required. One ADC is used to integrate the beginning of the pulse rise time while the second ADC is for integrating the tail part. In DSP techniques the incoming pulses coming directly from the detector are immediately digitized and can be decomposed into individual pulses waveforms. This eliminates the need for separate ADCs as one can easily get the integration of two parts of the pulse from the digital waveforms. This work describes the performance of these DSP techniques and compares the results with the analog method.","PeriodicalId":105619,"journal":{"name":"IEEE Nuclear Science Symposium Conference Record, 2005","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114383922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-10-23DOI: 10.1109/NSSMIC.2005.1596801
Xiao-Qun Zhang, Jacques Froment
The paper develops a tomographic reconstruction and regularization method based on a total variation minimization constrained by the knowledge of the input intervals the Fourier coefficients belong to. Experiments show that the approach outperforms classical reconstruction methods such as direct Fourier method (DFM), filtered back-projection (FBP) and Tikhonov iterative method (TIM), both in terms of PSNR (an objective mean-square error) and visual quality, especially in the case of noisy or sparse data. In addition the resulting algorithm requires a number of operations of O(N/sup 2/ log N) only, and is therefore faster than ordinary iterative methods, such as space-based TIM.
{"title":"Total variation based Fourier reconstruction and regularization for computer tomography","authors":"Xiao-Qun Zhang, Jacques Froment","doi":"10.1109/NSSMIC.2005.1596801","DOIUrl":"https://doi.org/10.1109/NSSMIC.2005.1596801","url":null,"abstract":"The paper develops a tomographic reconstruction and regularization method based on a total variation minimization constrained by the knowledge of the input intervals the Fourier coefficients belong to. Experiments show that the approach outperforms classical reconstruction methods such as direct Fourier method (DFM), filtered back-projection (FBP) and Tikhonov iterative method (TIM), both in terms of PSNR (an objective mean-square error) and visual quality, especially in the case of noisy or sparse data. In addition the resulting algorithm requires a number of operations of O(N/sup 2/ log N) only, and is therefore faster than ordinary iterative methods, such as space-based TIM.","PeriodicalId":105619,"journal":{"name":"IEEE Nuclear Science Symposium Conference Record, 2005","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114645819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-10-23DOI: 10.1109/NSSMIC.2005.1596577
C. Seifert, J. Orrell, D. Coomes, B.L. LaMarche, M. Bliss, K. Lynn, K. Jones, G. Campi
Recent advances in the growth and doping of CdZnTe using low-pressure Bridgman methods have allowed for the production of high-resistivity crystals. In this work, we present electrical characterization measurements on samples of CdZnTe grown at Washington State University. We demonstrate the capabilities of the CdZnTe material to perform as radiation detectors and correlate detector performance with crystal growth conditions.
{"title":"Performance of CdZnTe detectors grown by low-pressure Bridgman","authors":"C. Seifert, J. Orrell, D. Coomes, B.L. LaMarche, M. Bliss, K. Lynn, K. Jones, G. Campi","doi":"10.1109/NSSMIC.2005.1596577","DOIUrl":"https://doi.org/10.1109/NSSMIC.2005.1596577","url":null,"abstract":"Recent advances in the growth and doping of CdZnTe using low-pressure Bridgman methods have allowed for the production of high-resistivity crystals. In this work, we present electrical characterization measurements on samples of CdZnTe grown at Washington State University. We demonstrate the capabilities of the CdZnTe material to perform as radiation detectors and correlate detector performance with crystal growth conditions.","PeriodicalId":105619,"journal":{"name":"IEEE Nuclear Science Symposium Conference Record, 2005","volume":"280 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127859012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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