Pulser injection with subsequent removal-implementation and applications

Hartwell, J.K.; Goodwin, S. G.

doi:10.1109/23.34553

Cited by 20 publications

(6 citation statements)

References 11 publications

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“…While the peak shape performance was adequate, the impressive results were the energy stability and the quantitative accuracy of the activity measurements. Primarily due to the use of the pulse injection system [4] for energy calibration and rate effects corrections, the calculated energy of the 1408 keV line never deviated more than 0.23 keV from the correct value even though the 1408 kev peak centroid dropped almost 3 channels at the highest rate; and, the quantitative activity reported was always within the measurement uncertainty of the standard value. Figure 5 presents the percentage recovery of the activity value computed from the 1408 keV line as a function of the input counting rate.…”

Section: Calibration and Testingmentioning

confidence: 88%

“…As described previously [3], each spectrometer is provided with a NIM amplifier and ADC with histogramming memory implemented in Canberra Acquisition Interface Modules (AIMs). The spectrometer systems implement the INL technology of pulse injection with subsequent removal that we find to be essential for unattended systems [4].…”

Section: A Sample Routing and Fpms Installationmentioning

confidence: 99%

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Installation and Final Testing of an On-Line, Multi-Spectrometer Fission Product Monitoring System (FPMS) to Support Advanced Gas Reactor (AGR) Fuel Testing and Qualification in the Advanced Test Reactor

Hartwell

Scates

Drigert

et al. 2006

2006 IEEE Nuclear Science Symposium Conference Record

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Abstract-The US Department of Energy (DOE) is initiating tests of reactor fuel for use in an Advanced Gas Reactor (AGR).The AGR will use helium coolant, a low-power-density graphitemoderated core, and coated-particle fuel. A series of eight (8) fuel irradiation tests are planned for the Idaho National Laboratory's (INL's) Advanced Test Reactor (ATR). One important measure of fuel performance in these tests is quantification of the fission gas releases over the nominal 2-year duration of each irradiation experiment. This test objective will be met using the AGR Fission Product Monitoring System (FPMS) which includes seven (7) online detection stations viewing each of the six test capsule effluent lines (plus one spare). Each station incorporates both a heavilyshielded high-purity germanium (HPGe) gamma-ray spectrometer for quantification of the isotopic releases, and a NaI(Tl) scintillation detector to monitor the total count rate and identify the timing of the releases. The AGR-1 experiment will begin irradiation in December 2006. To support this experiment, the FPMS has been completely assembled, tested, and calibrated in a laboratory at the INL, and then reassembled in its final location in the ATR reactor basement. This paper presents the details of the equipment performance, the control and acquisition software, the installation in the ATR basement, and the test monitoring plan.

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Section: Calibration and Testingmentioning

confidence: 88%

Section: A Sample Routing and Fpms Installationmentioning

confidence: 99%

Installation and Final Testing of an On-Line, Multi-Spectrometer Fission Product Monitoring System (FPMS) to Support Advanced Gas Reactor (AGR) Fuel Testing and Qualification in the Advanced Test Reactor

Hartwell

Scates

Drigert

et al. 2006

2006 IEEE Nuclear Science Symposium Conference Record

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“…(1) (2) (3) The FPMS gamma-ray detectors have standard commercial pulse processing electronics modified to implement the INL pulse injection with subsequent removal technology [9]. This provides quality assurance data in the gamma-ray spectra that the authors believe is essential for unattended operation of the gamma-ray spectrometers.…”

Section: The Fpms Design Installation and Calibrationmentioning

confidence: 99%

Fission Product Monitoring of TRISO Coated Fuel for the Advanced Gas Reactor-1 Experiment

Scates

Hartwell

Walter

et al. 2008

Fourth International Topical Meeting on High Temperature Reactor Technology, Volume 1

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The US Department of Energy has embarked on a series of tests of TRISO-coated particle reactor fuel intended for use in the Very High Temperature Reactor (VHTR) as part of the Advanced Gas Reactor (AGR) program. The AGR-1 TRISO fuel experiment, currently underway, is the first in a series of eight fuel tests planned for irradiation in the Advanced Test Reactor (ATR) located at the Idaho National Laboratory (INL). The AGR-1 experiment reached a peak compact averaged burn up of 9% FIMA with no known TRISO fuel particle failures in March 2008. The burnup goal for the majority of the fuel compacts is to have a compact averaged burnup greater than 18% FIMA and a minimum compact averaged burnup of 14% FIMA.At the INL the TRISO fuel in the AGR-1 experiment is closely monitored while it is being irradiated in the ATR. The effluent monitoring system used for the AGR-1 fuel is the Fission Product Monitoring System (FPMS). The FPMS is a valuable tool that provides near real-time data indicative of the AGR-1 test fuel performance and incorporates both highpurity germanium (HPGe) gamma-ray spectrometers and sodium iodide [NaI(Tl)] scintillation detector-based gross radiation monitors.To quantify the fuel performance, release-to-birth ratios (R/B's) of radioactive fission gases are computed. The gamma-ray spectra acquired by the AGR-1 FPMS are analyzed and used to determine the released activities of specific fission gases, while a dedicated detector provides near-real time count rate information. Isotopic build up and depletion calculations provide the associated isotopic birth rates. This paper highlights the features of the FPMS, encompassing the equipment, methods and measures that enable the calculation of the release-to-birth ratios. Some preliminary results from the AGR-1 experiment are also presented.

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“…With suitable spectrum conversion routines, it can be used to analyze data from almost any manufacturers spectrometer system. PCGAP can control the operation of a Canberra Acquisition Interface Module (AIM) spectrometer equipped with an INEEL developed pulse injection system for individual spectrum validation [2] .…”

Section: Introductionmentioning

confidence: 99%

PCGAP: Users Guide and Algorithm Description

Killian¹

2000

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PCGAP is a software package, which was written to provide gamma-ray pulse height spectrum analysis on a personal computer platform using the Windows NT operating system. It is a collection of programs, which provide a wide range of operability extending from the single user environment to the general purpose counting room. Included in the package are necessary data structures and libraries used to compute quantitative radionuclide concentrations. PCGAP also contains techniques to decontaminate photopeak interferences; determine activity concentrations for radionuclides independent of their associated spectral photopeak size; and three methods to determine the energy scale of a spectrum.PCGAP performs a non-linear least squares fitting of a Gaussian function to spectral photopeaks. The fitting algorithm can fit up to five concurrent photopeaks using a common spectral background. The package includes a program that will automatically locate spectral photopeaks, fit them to a Gaussian function, identify the radionuclides associated with the found photopeaks, and compute a net activity concentration, and for an 8K spectrum do it in less than 30 seconds on a reasonably configured PC. PCGAP also includes a program which allows the operator to manually (using mouse clicks) identify photopeak locations, fit limits and background positions, initiate a fit to the photopeaks and then display the resulting Gaussian function forms. This interactive display function is particularly useful to resolve or properly fit photopeaks with complex adjacent structure and for photopeaks that are near the limit of detection.iv

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Pulser injection with subsequent removal-implementation and applications

Cited by 20 publications

References 11 publications

Installation and Final Testing of an On-Line, Multi-Spectrometer Fission Product Monitoring System (FPMS) to Support Advanced Gas Reactor (AGR) Fuel Testing and Qualification in the Advanced Test Reactor

Installation and Final Testing of an On-Line, Multi-Spectrometer Fission Product Monitoring System (FPMS) to Support Advanced Gas Reactor (AGR) Fuel Testing and Qualification in the Advanced Test Reactor

Fission Product Monitoring of TRISO Coated Fuel for the Advanced Gas Reactor-1 Experiment

PCGAP: Users Guide and Algorithm Description

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