Troy Unruh

Profile Information
Name
Mr. Troy Unruh
Institution
Idaho National Laboratory
Position
Engineer
h-Index
ORCID
0000-0003-2417-9060
Expertise
Instrumentation, Sensors
Publications:
"In-core Flux Sensor Evaluations at the ATR Critical Facility" Jason Harris, George Imel, David Nigg, Joy Rempe, Todd Sherman, Troy Unruh, Benjamin Chase, Jean-Francois Villard, Nuclear Technology Vol. 187 2014 308-315 Link
As part of an Idaho State University (ISU)–led Advanced Test Reactor (ATR) National Scientific User Facility (NSUF) collaborative project that includes Idaho National Laboratory (INL) and the French Alternative Energies and Atomic Energy Commission (CEA), flux detector evaluations were completed to compare their accuracy, response time, and long-duration performance. Special fixturing, developed by INL, allows real-time flux detectors to be inserted into various Advanced Test Reactor Critical Facility (ATRC) core positions to perform lobe power measurements, axial flux profile measurements, and detector cross-calibrations. Detectors initially evaluated in this program included miniature fission chambers, specialized self-powered neutron detectors (SPNDs), and specially developed commercial SPNDs. Results from this program provide important insights related to flux detector accuracy and resolution for subsequent ATR and CEA experiments and yield new flux data required for benchmarking models in the ATR Life Extension Program (LEP) Modeling Update Project.
"Micro-Pocket Fission Detectors (MPFDs) for In-Core Neutron Detection" Douglas McGregor, Michael Reichenberger, Jeremy Roberts, Troy Unruh, Philip Ugorowski, Takashi Ito, Sarah Stevenson, Daniel Nichols, Annals of Nuclear Energy Vol. 87 2015 318-323 Link
Neutron sensors capable of real-time measurement of neutrons in high-flux environments are necessary for tests aimed at demonstrating the performance of experimental nuclear reactor fuels and materials in material test reactors (MTRs). In-core Micro-Pocket Fission Detectors (MPFDs) have been studied at Kansas State University for many years. Previous MPFD prototypes were successfully built and tested with promising results. Efforts are now underway to develop advanced MPFDs with radiation-resistant, high-temperature materials capable of withstanding irradiation test conditions in high performance material and test reactors. Stackable MPFDs have been designed, built, and successfully demonstrated as in-core neutron sensors. Advances in the electrodeposition and measurement of neutron reactive material, along with refinements to composition optimization simulations, have enhanced the capabilities of contemporary MPFDs.
Presentations:
"Enhanced Instrumentation for Materials and Test Reactor" Joshua Daw, Joy Rempe, Troy Unruh, ANS July 22-26, (2012)
"Flux Sensor Evaluations at the ATR Critical Facility" Jason Harris, George Imel, Joy Rempe, Troy Unruh, 7th International Topical Meeting on Nuclear Plant Instrumentation, Control, and Human Machine Interface Technologies (NPIC&&HMIT 2010) November 7-7, (2010)
"Use of Silicon Carbide Monitors in ATR Irradiation Testing" Heather Chichester, Joy Rempe, Troy Unruh, 8th International Topical Meeting on Nuclear Plant Instrumentation, Control, and Human Machine Interface Technologies July 22-26, (2012)
"Use of Silicon Carbide Monitors in ATR Irradiation Testing" Heather Chichester, Troy Unruh, ANS July 24-28, (2012)
NSUF Articles:
RTE 1st Call Awards Announced - Projects total approximately $1.4 million These projects will continue to advance the understanding of irradiation effects in nuclear fuels and materials in support of the mission of the DOE-NE. Friday, February 8, 2019 - Calls and Awards
DOE Awards Eight CINR NSUF Projects - Projects include $3M in access grants and R&D funding Monday, July 6, 2020 - Calls and Awards
Additional Publications:
"Nonnuclear Experimental Capabilities to Support Design, Development, and Demonstration of Microreactors" J. L. Hartvigsen, T. J. Morton, J. Yoo, S. Qin, M. Song, D. P. Guillen, T. Unruh, J. E. Hansel, J. Jackson, J. Gehin, H. Trellue, D. Mascarenas, R. S. Reid, C. M. Petrie, P. Sabharwall, [2023] Nuclear Technology · DOI: 10.1080/00295450.2022.2043087
"In-Core Neutron Detection System Using a Dual-Mode Self-Reset Preamplifier With the Micro-Pocket Fission Detector" Duckhyun Kim, Dongseong Shin, Troy C. Unruh, Kevin Tsai, Woo-Young Choi, Inyong Kwon, Minuk Seung, [2023] IEEE Transactions on Instrumentation and Measurement · DOI: 10.1109/tim.2023.3318685
"A Two-Cycle Automated Approach to Electrical Resistivity Measurement of SiC Monitors for Peak Irradiation Temperature" Mitchell Plummer, Ashley Lambson, Troy Unruh, Pattrick Calderoni, Malwina Wilding, Joshua Daw, Kurt Davis, Ahmad Al Rashdan, [2022] IEEE Transactions on Nuclear Science · DOI: 10.1109/tns.2022.3193623
"Experimental Capabilities to Support Design, Development and Demonstration of Microreactors" Jeremy Hartvigsen, Terry Morton, Donna Guillen, Troy Unruh, John Jackson, Jess Gehin, H. Trellue, D. Mascarenas, R. Reid, Piyush Sabharwall, [2021] · DOI: 10.2172/2371663
"In-Pile Instrumentation (I2) (2018 Report)" Troy Unruh, [2020] · DOI: 10.2172/1668351
"Initial Temperature Testing of Advanced Manufactured Melt Wire Package" Kunal Mondal, Randy Lloyd, Kiyo Fujimoto, Michael McMurtrey, Troy Unruh, Malwina Wilding, [2020] · DOI: 10.2172/1826597
"Recovery of Silicon Carbide monitor irradiation temperature via continuous resistance measurement during annealing (Pt. II)" Ahmad Al Rashdan, Ashley Lambson, Malwina Wilding, Troy Unruh, Mitchell Plummer, [2019] · DOI: 10.2172/1668405
"Pulse Mode Calibration of the Micro Pocket Fission Detector" Troy Unruh, Daniel Marc Nichols, [2019] · DOI: 10.2172/1547331
"Enhanced Micro-Pocket Fission Detector for High Temperature Reactors - FY17 FInal Project Report" Michael Reichenberger, Sarah Stevenson, Douglas McGregor, Kevin Tsai, Troy Unruh, [2017] · DOI: 10.2172/1468579
"Fabrication and testing of a 4-node micro-pocket fission detector array for the Kansas State University TRIGA Mk. II research nuclear reactor" Daniel M. Nichols, Sarah R. Stevenson, Tanner M. Swope, Caden W. Hilger, Troy C. Unruh, Douglas S. McGregor, Jeremy A. Roberts, Michael A. Reichenberger, [2017] Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment · DOI: 10.1016/j.nima.2017.04.047
"MCNP6 simulated performance of Micro-Pocket Fission Detectors (MPFDs) in the Transient REActor Test (TREAT) Facility" Michael A. Reichenberger, Jeremy A. Roberts, Troy C. Unruh, Douglas S. McGregor, Vishal K. Patel, [2017] Annals of Nuclear Energy (Oxford) · DOI: 10.1016/j.anucene.2017.02.017
"Instrumentation Development for Transient Testing in TREAT" [2016] Transactions of the American Nuclear Society
"Initial Back-to-Back Fission Chamber Testing in ATRC" Troy Unruh, Joy Rempe, Benjamin Chase, [2014] · DOI: 10.2172/1164850
"Micro-Pocket Fission Detectors (MPFD) For Fuel Assembly Analysis" [2013]
"Enhanced In-Pile Instrumentation at the Advanced Test Reactor" [2012]
"Method to calibrate fission chambers in Campbelling mode" [2011]
Source: ORCID/CrossRef using DOI