PNNL

Raymond Klann is the acting group leader of the Nuclear Engineering Group in the National Security Directorate at Pacific Northwest National Laboratory (PNNL) and the Detection Science leader for the Department of Homeland Security Countering Weapons of Mass Destruction (DHS CWMD) Large-scale Equipment Acquisition and Deployment Program. Previously, he has served as the division director for the Signature Sciences and Technology Division and the group leader of the Detection Systems Group.

Klann has experience in radiation detector development and testing, and algorithm development for radiological search and nuclear interdiction. His expertise is in experimental nuclear techniques, nuclear measurements, radiation transport analysis, and reactor physics. He has been a lead test scientist for the DHS CWMD Office and an assessment scientist for the Department of Energy Radiological Assistance Program. He also served as a program area leader for Render-Safe Technologies for the Nuclear Incident Response Program, as well as a member of the science team for the Nuclear Smuggling Detection and Deterrence Program.  

Before joining PNNL, Klann spent 23 years at Argonne National Laboratory as the manager of the Radiological Detection and Response section of the Nuclear Engineering Division. 

• Radiation detector development
• Applied radiation detection and measurement
• Radiation transport analysis
• Systems, methods, and algorithms for radiological search and nuclear interdiction
• Neutron detection and detectors
• Neutron spectroscopy
• Gamma and neutron radiology

• PhD in nuclear science and engineering, Idaho State University
• MS in nuclear engineering, Massachusetts Institute of Technology
• BS in nuclear engineering, Massachusetts Institute of Technology

• American Nuclear Society
  • Current Member, Finance Committee, 2012–Present
  • Chair, National Program Committee, 2012–2016, member 1994–Present
  • Chair, National Meetings Committee, 2017–present
  • Technical Chair, American Nuclear Society Annual Meeting, 2007, 2012, 2017, and 2024
  • Executive Committee Member, Radiation Protection and Shielding Division, 2017–2020
  • Chair, Meetings Proceedings and Transactions Committee, 2010–2011
  • Chair, Chicago Local Section, 2002–2007
  • Chair, Radiation Protection and Shielding Division, 2005–2006

• Presidential Citation, American Nuclear Society, 2015
• Outstanding Service Award, American Nuclear Society, 2013
• Certificate of Appreciation from U.S. Secret Service for NATO G-44 Summit, 2012
• National Nuclear Security Administration Certificate of Excellence for Japan Earthquake and Tsunami Disaster Response, 2011

• Klann, R. T., R. B. Vilim, and S. d. l. BARRERA. Method and Algorithm for Determining Radiation Shielding Thickness and Gamma-Ray Energy in Real-Time U.S. Patent No. 9,212,905, filed May 12, 2011, and issued December 15, 2015.
• Vilim, R. B., and R. T. Klann. Source Localization Using Multiple Units of a Tight-Pitched Detector Array. U.S. Patent No. 8,930,165, filed September 14, 2010 and issued January 6, 2015.
• Klann, R., R. B. Vilim, and Y. S. Park. Tracking of Moving Radioactive Sources. U.S. Patent No. 7,465,924, filed April 28, 2006 and issued December 16, 2008.
• McGregor, D. S., and R. Klann. High-Efficiency Neutron Detectors and Methods of Making Same. U.S. Patent No. 7,164,138, filed October 29, 2003, and issued January 16, 2007.
• McGregor, D., and R. Klann. Pocked Surface Neutron Detector. U.S. Patent No. 6,545,281, filed July 6, 2001 and issued April 8, 2003.
• Klann, R. T., and D. S. McGregor. Coated Semiconductor Devices for Neutron Detection. U.S. Patent No. 6,479,826, filed November 22, 2000 and issued November 12, 2002.
• System and Method for Placement of Detector and Camera for Radiation Threat Tracking in Real-Time, application filed.

2013

• R. Klann, et al., “ITRAP+10 Testing of Gamma and Neutron Search Devices,” Trans. Amer. Nucl. Soc., 107, p. 371‑375, 2013.

2010

• J. Shergur, R. Klann, C. Finfrock, D. Trombino, C. Okada, G. Kallenbach,  “Testing of Mobile Platform Radiation Detector Systems by the DHS Domestic Nuclear Detection Office,” Proceedings of the 2010 ANS Radiation Protection and Shielding  Division Topical Meeting, April, 2010.
• R.B. Vilim, J. Thomas, and R.T. Klann, “Integrated Treatment of Multiple Directional Detectors,” Proceedings of the 2010 ANS Radiation Protection and Shielding Division Topical Meeting, April, 2010.
• S. de la Barrera, R.T. Klann, and R.B. Vilim, “Treatment of Shielding in Real-time Source Tracking Software,” Proceedings of the 2010 ANS Radiation Protection and Shielding Division Topical Meeting, April, 2010.

2009

• R.B. Vilim and R.T. Klann, “Tracking of Weak Radioactive Sources in Crowded Venues,” IEEE Nuclear Science Symposium Conference Record, October, 2009.
• R. Klann, R. Vilim, S. de la Barrera, “Tracking Moving Sources Using Distributed Detectors,”  Trans. Amer. Nucl. Soc., 100, p.255-257, June, 2009.

2008

• R.T. Klann, J. Shergur, G. Mattesich, "Current State of Commercial Radiation Detection Equipment for Homeland Security Applications," Trans. Amer. Nucl. Soc., 99, p.555-563, November, 2008.

2006

• R. Klann, Q. Lou, and C.L. Fink, "Angular Response Functions for Sodium Iodide Detectors," IEEE Nuclear Science Symposium Conference Record, October, 2006.
• J.P. Hudelot, R.T. Klann, M. Antony, D. Bernard, P. Fougeras, F. Jorion, N. Drin, L. Donnet, C. Leorier, and Z. Zhong, “The OSMOSE Program for the Qualification of Integral Cross Sections of Actinides: Preliminary Results in a PWR-UOx Spectrum,” Proceedings of the PHYSOR-2006 Reactor Physics Topical Meeting, September, 2006.
• Q. Lou, R.T. Klann, J.F. Stubbins, and P.M. Delurgio, “Response Functions of Semiconductor Slow Neutron Detectors for Spectrometry,” Trans. Amer. Nucl. Soc., 94, p. 347-348, June, 2006.

2004

• Y. Cao, G.Perret, R.T. Klann, and J.C.Lee, “Reactor Physics Analysis of the MINERVE Reactor for the OSMOSE Program,” Trans. Amer. Nucl. Soc., 91, p. 725-727, November, 2004.
• P. Thiyagarajan, P. M. De Lurgio, R. T. Klann, C.L. Fink, D.S. McGregor, I. Naday, D. Wozniak, E. Lang, “A semiconductor based transmission monitor for the SAND instrument at IPNS,” Proceedings of the American Conference on Neutron Scattering, June, 2004.
• J.P. Hudelot, R.T. Klann, B.J. Micklich, M. Antony, G. Perret, N. Thiollay, J.M. Girard, V. Lavel, P. Leconte, “MINERVE Reactor Characterization in Support of the OSMOSE Program: Safety Parameters,” Proceedings of the PHYSOR-2004 Reactor Physics Topical Meeting, April, 2004.
• R.T. Klann, J.P. Hudelot, M. Antony, B.J. Micklich, G. Perret, G. Imel, J.M. Girard, and V. Laval, “MINERVE Reactor Characterization in Support of the OSMOSE Program: Spectral Indices,” Proceedings of the PHYSOR-2004 Reactor Physics Topical Meeting, April, 2004.
• J.P. Hudelot, R.T. Klann, P. Fougeras, F. Jorion, N. Drin, and L. Donnet, “OSMOSE: An Experimental Program for the Qualification of Integral Cross Sections of Actinides,” Proceedings of the PHYSOR-2004 Reactor Physics Topical Meeting, April, 2004.

2003

• M.R. James, R.T. Klann, G.L. Morgan, E.J. Pitcher, M.A. Paciotti, J.M. Oostens, J.E. Platte, D.R. Lowe, “Measurements from Activation Foils of a Proton Irradiated Lead-Bismuth Target”, Proceedings of AccApp03 Topical Meeting, June, 2003.
• E.J. Pitcher, K. Corzine, G.L. Morgan, R.T. Klann, M.R. James, M.A. Paciotti, “Time-of-Flight Measurement of Neutron Leakage from a Lead-Bismuth Target”, Proceedings of ANS Topical Meeting on Accelerator Applications, AccApp03, June, 2003.

2002

• M.R. James, R.T. Klann, G.L. Morgan, E. Pitcher, M. Paciotti, and J. Oostens, “Preliminary Results of Neutron Yield and Spectral Measurements from a thick Pb-Bi Target from Irradiation by 800 MeV Protons, Proceedings of the 11^th International Symposium on Reactor Dosimetry, ISRD11, August, 2002.
• D.S. McGregor, R.T. Klann, J.D. Sanders, J.T. Lindsay, K.J. Linden, H.K. Gersch, P.M. DeLurgio, C.L. Fink, and E. Ariesanti, “Recent Results from Thin-Film-Coated Semiconductor Neutron Detectors,” Proceedings of the SPIE Conference, July, 2002.
• R.T. Klann C.L. Fink, D.S. McGregor, and H. Gersch, “Development of Coated Gallium Arsenide for Neutron Detection Applications,” Proceedings of the ANS Radiation Protection and Shielding Topical Meeting, April, 2002.

2001

• D.S. McGregor, R.T. Klann, H.K. Gersch, and D. Sanders, “Designs for Thin-Film-Coated Semiconductor Thermal Neutron Detectors” Proceedings of the IEEE 12^th International Workshop on Room Temperature Semiconductor Detectors, November, 2001.
• D.S. McGregor, H.K. Gersch, J.D. Sanders, R.T. Klann, and J.T. Lindsay, “Thin-film-coated Detectors for Neutron Detection,” Proceedings of the First International Symposium on Radiation Safety and Detection Technology, Seoul, Korea, July, 2001.

2000

• R.T. Klann, C.L. Fink, D.S. McGregor, and H.K. Gersch, “Development of Semi-Conductor Detectors for Fast Neutron Radiography,” Proc. 16^th International Conference on Applications of Accelerators in Research and Industry (CAARI2000), AIP Conference Proceedings, November, 2000.
• R.T. Klann and K.N. Grimm, “Shielding Analysis for the MDAS Facility,” Proceedings of the RPS2000 Topical Meeting: Radiation Protection for Our National Priorities, September, 2000.
• R.W. Schaefer, R.T. Klann, S.M. Koltyshev, and S. Krechetov, “Criticality Safety Issues in the Disposition of BN-350 Spent Fuel,” Proceedings of the Fourth Topical Meeting on DOE Spent Nuclear Fuel and Fissile Material Management, San Diego, CA, June 4-8, 2000.
• R.T. Klann, “Development of Reference Materials for SNF NDA Systems,” Proceedings of the Fourth Topical Meeting on DOE Spent Nuclear Fuel and Fissile Material Management, San Diego, CA, June 4-8, 2000.
• R.T. Klann and D.S. McGregor, “Development of Coated Gallium Arsenide Neutron Detectors,” Proceedings of the Eighth International Conference on Nuclear Engineering (ICONE-8), Baltimore, MD, April 2-6, 2000.

1999

• B.A. Hilton and R.T. Klann, "Hydrogen Measurement in Cladding Material by Neutron Transmission Analysis," Trans. Amer. Nucl. Soc., 80, 1999.

1998

• R.T. Klann, S.E. Aumeier, W.R. Mosby, P. Rinard, and R. Siebelist, "Neutron Measurements of EBR-II Assemblies," Proceedings of the Third Topical Meeting on DOE Spent Nuclear Fuel and Fissile Materials Management, September 8–11, 1998.

1997

• R.T. Klann, "A System for Fast Neutron Radiography," Proc. 14^th International Conference on Applications of Accelerators in Research and Industry, AIP Conference Proceedings CP392, p. 883-886, 1997.

1996

• R.T. Klann, "Fast Neutron (14.5 MeV) Radiography: A Comparative Study," Neutron Radiography: Proceedings of the Fifth World Conference, Berlin, Germany, June 16‑20, 1996.
• R.T. Klann and M.D. Natale, "Fast Neutron Radiography Research at ANL‑W," Neutron Radiography: Proceedings of the Fifth World Conference, Berlin, Germany, June 16‑20, 1996.
• R.T. Klann and M.D. Natale, "Determining the Average Flux and Neutron Energy from a Neutron Generator," Trans. Amer. Nucl. Soc., 74, 1996.
• J.C. Courtney and R.T. Klann, "Applications of Point Kernel Estimates to the Fuel Conditioning Facility Shield Test Program," Proceedings of the 1996 ANS Topical Meeting on Radiation Protection and Shielding, p. 709‑721, 1996.

1994

• R.T. Klann, "Personnel Protection from a Neutron Generator: A Shielding Analysis and Survey," Trans. Amer. Nucl. Soc., 71, p. 393‑394, 1994.
• R.M. Lell, R.T. Klann, G.R. Imel, E.K. Fujita, R.W. Benedict, R.H. Rigg, and D.B. Tracy, "Nuclear Criticality Safety Program at the Fuel Cycle Facility," Proceedings of the Fourth International Conference on Nuclear Fuel Reprocessing and Waste Management, London, U.K., April 24‑28, 1994.

1993

• R.T. Klann and B.A. Picker, "A Conceptual Redesign of an Inter‑Building Fuel Transfer Cask," Proceedings of the Second ASME/JSME International Conference on Nuclear Engineering (ICONE‑2), p. 223‑236, 1993.

1992

• R.T. Klann, “A Radiation Monitoring Program for ANL‑W's Fuel Cycle Facility,” Trans. Amer. Nucl. Soc., 65, p. 371‑372, 1992.