Researcher

Troy Unruh

Engineer

Research Areas:
High Temperature Test Laboratory

Biography:

Troy Unruh has over eight years of experience with reactor operations and experiments. He is currently the ATR Reactor Project Engineer that leads ATR NSUF flux evaluation activities. Mr. Unruh earned an R&D 100 award for research he completed on semiconductor neutron detection at Kansas State University, and he has authored several archival peer-reviewed journal publications and peer-reviewed conference papers.

Education:

M.S., Nuclear Engineering - Kansas State University

B.S., Mechanical Engineering - Kansas State University

Affiliations:

Idaho American Nuclear Society

Publications:

Peer-Reviewed Publications
T. Unruh, M.Reichenberger, S. Stevenson, K. Tsai, D. McGregor, NEET Enhanced Micro-Pocket Fission Detector for High Temperature Reactors - FY17 Final Project Report, INL/EXT-17-43397, September 2017.

M.A. Reichenberger, T.C. Unruh, P. Ugorowski, T. Ito, J.A. Roberts, S.R. Stevenson, D.M. Nichols, D.S. McGregor, Micro-Pocket Fission Detectors (MPFDs) for In-Core Neutron Detection, Annals of Nuclear Energy: Vol. 87, Part 2, January 2016, Pages 318-323.

M.A. Reichenberger, S.R. Stevenson, D.M. Nichols, T.C. Unruh, J.A. Roberts, D.S. McGregor, Development of a Modular Micro-Pocket Fission Detector Instrumentation System for Test Nuclear Reactors, 2016 ANS Winter Meeting and Nuclear Technology Expo.

V.K. Patel, M.A. Reichenberger, J.A. Roberts, T.C. Unruh, and D.S. McGregor, "Simulated Performance of Micro-Pocket Fission Detectors (MPFDs) in the Transient REActor Test (TREAT) Facility using MCNP 6", Annals of Nuclear Energy: Vol. 104, June 2017, Pages 191-196.

T.C Unruh, B.M. Chase, J.L. Rempe, D. Nigg, G. Imel, J. Harris, T. Sherman, JF. Villard, “In-Core Flux Sensor Evaluations at the ATR Critical Facility,” Nuclear Technology, Vol. 187, No. 3, September 2014, pp 308-315.

B. Geslot, T. Unruh, P Filliatre, C. James, J. Di Salvo, S. Breaud, J Villard, “Method to Calibrate Fission Chambers in Campbelling Mode,” IEEE Transactions on Nuclear Science, Vol. 59, No. 4, August 2012.

J. Rempe, D. Knudson, J. Daw, T. Unruh, B. Chase, and K. Davis, “Enhanced In-pile Instrumentation at the Advanced Test Reactor,” invited paper for ANIMMA 2011 Special Edition, IEEE Transactions on Nuclear Science,59, Issue 4, Part:2, August 2012, pp 1214 -1223.

D.S. McGregor, S. Bellinger, D. Bruno, W.L. Dunn, W.J. McNeil, E. Patterson, B.B. Rice, J.K. Shultis, T. Unruh, "Perforated Diode Neutron Detector Modules Fabricated from High-Purity Silicon," Radiation Physics and Chemistry, Volume 78, Issue 10, October 2009, pp. 874–881.

T. Unruh, S. Bellinger, D. Huddleston, W. McNeil, E. Patterson, T. Sobering, R. Taylor, D. McGregor, "Design and Operation of a 2D Thin Film Semiconductor Neutron Detector Array for Use as a Beamport Monitor," Nuclear. Instruments and Methods, A604 (2009) pp. 150-153.

D.S. McGregor, W.J. McNeil, S.L. Bellinger, T.C. Unruh, J.K. Shultis, "Microstructured Semiconductor Neutron Detectors," Nuclear Instruments and Methods, A608 (2009) pp. 125-131.

W.J. McNeil, S.L. Bellinger, T.C. Unruh, C.M. Henderson, P. Ugorowski, B. Morris-Lee, R.D. Taylor, D.S. McGregor, "1-D Array of Perforated Diode Neutron Detectors," Nuclear Instruments and Methods, Physics Research Section A 604:127-129.

S.L. Bellinger, W.J. McNeil, T.C. Unruh, and D.S. McGregor, "Characteristics of 3D Micro-Structured Semiconductor High Efficiency Neutron Detectors," IEEE Transactions on Nuclear Science, Vol. 56, issue 3, pp. 742-746.

D.S. McGregor, T.C. Unruh, and W.J. McNeil, "Thermal Neutron Detection with Pyrolytic Boron Nitride," Nuclear Instruments and Methods section A , 591 (2008) pp. 530-533.

C.J. Solomon, J.K. Shultis, W.J. McNeil, T.C. Unruh, B.B. Rice, and D.S. McGregor, "A Hybrid Method for Coupled Neutron-Ion Transport Calculations for 10B and 6LiF Coated and Perforated Detector Efficiencies," Nucl. Instrum. and Meth., A580 (2007) pp. 326-330.

Conference Papers
M. Reichenberger, T.C. Unruh, P. Ugorowski, “Micro-Pocket Fission Detectors (MPFD) For Fuel Assembly Analysis,” International Conference on Environmental Remediation and Radioactive Waste Management (ICEM 2013), Brussels, Belgium, September 8-12, 2013.

J. L. Rempe, D. L. Knudson, J. E. Daw, T. Unruh, B.M. Chase, K. Davis, A. J. Palmer, and R. S. Schley, "Advanced In-pile Instrumentation for Material and Test Reactors," 2013 Conference on Advancements in Nuclear Instrumentation, Measurements Methods (ANIMMA 2013), June 23-27, 2013, Marseilles, France.

J. Rempe, D. Knudson, J. Daw, T. Unruh, B. Chase, K. Davis, R. Schley, and S. Taylor, "New Sensors for Irradiation Testing at Materials and Test Reactors," IAEA Technical Meeting on In-Pile Testing and Instrumentation for Development of Generation-IV Fuels and Materials, 21-24 August 2012, Halden, Norway.

K. L. Davis, B. Chase, T. Unruh, D. Knudson, J. Rempe, H. Chichester, K. Sridharan, "Use of Silicon Carbide Monitors in ATR Irradiation Testing," 8th International Topical Meeting on Nuclear Plant Instrumentation, Control, and Human Machine Interface Technologies (NPIC&HMIT 2012), San Diego, CA, July 22-26, 2012.

J. Rempe, D. Knudson, J. Daw, T. Unruh, B. Chase, K. Davis, and R. Schley, “New Instrumentation for Irradiation Testing in High Flux Materials and Test Reactors,” 8th International Topical Meeting on Nuclear Plant Instrumentation, Control, and Human Machine Interface Technologies (NPIC&HMIT 2012), San Diego, CA, July 22-26, 2012.

J. Rempe, D. Knudson, J. Daw, T. Unruh, B. Chase, K. Davis, and R. Schley, “Enhanced Instrumentation for Materials and Test Reactors,” 8th International Topical Meeting on Nuclear Plant Instrumentation, Control, and Human Machine Interface Technologies (NPIC&HMIT 2012), San Diego, CA, July 22-26, 2012.

J.E. Daw, J.L. Rempe, D.L. Knudson, T. Unruh, B.M. Chase, and K.L. Davis, “Temperature Monitoring Options Available at the Idaho National Laboratory Advanced Test Reactor,” Proceedings of the 9th International Temperature Symposium, Anaheim, CA, March 2012.

D. Nigg, J. Nielsen, B. Chase, T. Unruh, K. Stueve, C. Jackson, R. Murray, “Initial Validation Measurements to Support the Neutronics Modeling, Simulation, and V&V Upgrade for the Advanced Test Reactor,” Proceedings of the 2011 ANS Winter Meeting, Washington, DC, October, 2011.

J. Rempe, D. Knudson, J. Daw, T. Unruh, B. Chase, K. Condie, J. Palmer, and K. Davis, “Enhanced In-pile Instrumentation at the Advanced Test Reactor,” Proceedings of the Second International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications (ANIMMA2011), Ghent, Belgium, June 2011.

T. Unruh, J. Rempe, D. Nigg, P. Hart, G. Imel, J. Harris, and E. Bonebrake, “Flux Sensor Evaluations at the ATR Critical Facility,” Proceedings of the 7th NPIC HMIT Symposium, Las Vegas, NV, November 2010.

Technical Reports
J. Rempe, D. Knudson, J. Daw, T. Unruh, B. Chase, R. Schley, J. Palmer; and K. Condie, “Status Report on Efforts to Enhance Instrumentation to Support Advanced Test Reactor Irradiations,” INL/EXT-13-30427, January 2014.

T. Unruh, J. Rempe, D. McGregor, P. Ugorowski, M. Reichenberger, “NEET Micro-Pocket Fission Detector -- FY 2013 Status Report,” INL/EXT-13-29346, September 2013.

T. Unruh, B. Chase, J. Rempe, “ATRC Neutron Detector Testing Quick Look Report,” INL/EXT-13-29896, August 2013.

T. Unruh, J. Rempe, D. McGregor, P. Ugorowski, M. Reichenberger, “NEET Micro-Pocket Fission Detector -- FY 2012 Status Report,” INL/EXT-12-27274, September 2012.

J. Rempe, D. Knudson, J. Daw, T. Unruh, B. Chase, K. Davis, R. Schley, S. Taylor, D. Nigg, K. Condie, “2011 Status Report on Efforts to Enhanced Instrumentation to Support Advanced Test Reactor Irradiations,” INL/EXT-11-24233, January 2012.

K. Davis, J. Rempe, D. Knudson, B. Chase, T. Unruh, “Evaluations of University of Wisconsin Silicon Carbide Temperature Monitors 300 LO and 400 LO B,” INL/EXT-11-24226, January 2012.

D. Nigg, J. Rempe, T. Unruh, and J. Nielsen, “Qualification Of Devices For Neutron Flux Measurements In The Advanced Test Reactor Critical Facility, Rev. 1” TEV-885, July 2011.

J. Rempe, D. Nigg, G. Imel, T. Unruh, “FY-10 Irradiation Experiment Plan for the ATR National Scientific User Facility – Idaho State University Project Evaluating Flux Sensors,” PLN-3351, INL/MIS-10-18685, April 2010.
T. Unruh, Core Safety Assurance Package, Reactor Cycle 145B-1, November 2009.

T. Unruh, Core Safety Assurance Package, Reactor Cycle 144B-1, August 2009.

Videos

CDS re mix

High Temperature Test Laboratory at INL

Presentations:

T. Unruh, J. Daw, “Enhanced Instrumentation Development at INL,” INL/MIS-13-29498, Meeting at INL with TerraPower Representatives, June 2013.

T. Unruh, “ATR National Scientific User Facility Back-to-Back Fission Chamber Evaluations”, ATRC Test Plan TP-6-13, September 2013.

T. Unruh, “N-16 Experiment Guide Tube Testing”, ATRC Test Plan TP-2-13, March 2013.

T. Unruh, J. Rempe, “Nuclear Energy Enabling Technologies (NEET) Advanced Sensors and Instrumentation (ASI) Panel,” INL/MIS-12-26646 Annual Progress report presented at 8th International Topical Meeting on Nuclear Plant Instrumentation, Control, and Human Machine Interface Technologies (NPIC&HMIT 2012), San Diego, CA, July, 2012.

T. Unruh, “CEA Cadarache: Miniature Fission Chamber Research in the South of France,” INL/MIS-12-24714, Presentation to Idaho Section American Nuclear Society March Dinner meeting, Idaho Falls Idaho, March 2012.

T. Unruh, “Visiting Researcher at CEA Cadarache offers ATR NSUF Unique Benefits,” INL/MIS-12-24717, Meeting at INL for ATR NSUF, February 2012.

T. Unruh, B. Chase, J. Rempe, D. Nigg, T. LaPorta, C. Jackson, P. Hart, G. Imel, J. Harris, and E. Bonebrake, “Flux Evaluations at the Advanced Test Reactor Critical Facility,” Nuclear Fuels and Materials Spotlight, Volume 3, INL/MIS-12-24967, February 2012.

D. Nigg, S. Bays, E. Swain, D. Crawford, K. Hamman, J. Nielson, M. DeHart, J. Navarro, D. Lucas, J. Parry, B. Curnutt, B. Chase, T. Unruh, T. LaPorta, K. Stueve, C. Jackson, and R. Murray, “Advanced Test Reactor Core Modeling Update Project,” Nuclear Fuels and Materials Spotlight, Volume 3, INL/MIS-12-24967, February 2012.

J. Daw, J. Rempe, D. Knudson, T. Unruh, B. Chase, K. Davis, and A. Palmer, “Temperature Monitoring Options Available at the Idaho National Laboratory Advanced Test Reactor,” Nuclear Fuels and Materials Spotlight, Volume 3, INL/MIS-12-24967, February 2012.

T. Unruh, “March 2011 ICIS Newsletter - Feature Story,” INL/MIS-11-22142, May 2011.

J. Rempe, D. Knudson, B. Kim, K. Condie, J. Daw, D. Nigg, S, Taylor, and T. Unruh, “New In-pile Instrumentation for the ATR,” Nuclear Fuels and Materials Spotlight, Volume 2, INL/MIS-10-20524, November 2010.

T. Unruh, B. Chase “Flux Runs for Activation Foil Measurements”, ATRC Test Plan TP-5-10, December 2010.

T. Unruh, “N-16 Experiment Guide Tube Testing”, ATRC Test Plan TP-4-10, August 2010.

T. Unruh, “N-16 Experiment Guide Tube Mockup fitment in ATRC,” ATRC Test Plan TP-2-10, June 2010.

Awards:

INL Office of Technology Transfer Successful Proposal Award, 2017

DOE Leaders of Tomorrow in Nuclear Energy Participant, 2017

Innovations in Fuel Cycle Research Award, 2nd Place Nuclear Fuels Open Competition, 2014

Idaho Academy of Science Award, Outstanding New Investigator 2014

R&D Magazine, R&D 100 Award, High-Efficiency Microstructured Semiconductor Neutron Detectors, 2009

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