Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Leaders & Organization
Leadership & Administration
The NCNR is led by a directorate responsible for the strategic vision, safety, and operational excellence of the facility.
| Name | Role | Focus Area |
|---|---|---|
| James M. Adams | Director | Facility strategy, operations, and partnerships; licensee for the neutron source. |
| Thomas Newton | Deputy Director, Chief of Reactor Operations and Engineering (CROE) and Group Leader, Reactor Operations and Engineering (ROE) | Facility strategy, NRC regulatory compliance, and technical management of reactor operations and safety systems. |
| Monyelle Mingo | Executive Officer | Business operations and planning. |
| Andrea Szakal | Safety Coordinator | Organizational safety and compliance |
| Steve Dewey | Chief of Health Physics | Radiation safety and regulatory compliance for facility and user activities. |
| Brian Kirby | Group Leader, Research Facility Operations (RFO) | Instrument hardware, sample environments, and technical facility infrastructure. |
| Ronald L. Jones | Group Leader, Neutron Condensed Matter Science (NCMS) | Scientific strategy, partnerships, education and outreach, instrument operations |
Organization & Structure
The NCNR is divided into several specialized groups that manage everything from the physics of the reactor to the software used by visiting scientists.
1. Reactor Operations and Engineering (ROE)
This group is the backbone of the facility, ensuring the neutron source provides a steady, safe source of neutrons for experiments.
- Operations Team: Led by Randolph Strader, focusing on the operation of the 20MW reactor, operator training and qualifications, and emergency and security preparedness.
- Engineering Team: Led by Andrew Main (A), this team manages reactor design and safety, licensing and compliance, systems and plant engineering, and design and maintenance of the liquid hydrogen cold sources.
- Aging Reactor Management Team: Led by Andrew Gahan, this team provides mechanical and electrical maintenance, instrument calibration, and surveillance.
2. Neutron Condensed Matter Science (NCMS)
This group focuses on the scientific application of neutron scattering to understand the structure and dynamics of materials.
- Structure and Dynamics of Materials: Led by Craig Brown, managing Spin Echo, HFBS, Powder Diffraction.
- Macromolecular & Microstructural Science: Led by Paul Butler, managing VSANS, 30m SANS (NG7 and NGB), USANS, 10m SANS.
- Condensed Matter Physics: Led by Nick Butch, managing the Thermal 3-Axis (BT7 and BT4), PoLAR, DCS, MACS.
- Surfaces and Interfaces: Led by David Hoogerheide, managing CANDOR, MAGIK, PBR.
3. Research Facility Operations (RFO)
This group develops, maintains, and supports advanced neutron measurement capabilities and associated technology for NCNR.
- Instrument Control Electronics: Led by Nick Maliszewskyj, motors and neutron detectors.
- Instrument Control Software: Led by Steve Pheiffer, user interfaces for neutron instrument operation.
- User Services: Led by Yamali Hernandez, sample environment, neutron beam polarization, sample prep labs, and user proposal coordination.
- Mechanical Engineering Technicians: Led by Doug Johnson, assembly and maintenance of neutron instrumentation and support equipment.
- Mechanical Engineering: Led by Dan Adler, design for instruments, shielding, and the neutron guide network.
- Information Technology: Led by Alan Munter, support for facility computer and networking needs.
Instrument Contacts
| Instrument | Contacts |
|---|---|
| BT1 High Resolution Powder Diffractometer | • H. Wu, 301-975-2387, hui.wu [at] nist.gov (hui[dot]wu[at]nist[dot]gov) • C. M. Brown, 301-975-5134, craig.brown [at] nist.gov (craig[dot]brown[at]nist[dot]gov) • H. Evans, 301-975-0616, hayden.evans [at] nist.gov (hayden[dot]evans[at]nist[dot]gov) |
| BT2 Neutron Imaging Facility | • J. LaManna, 301-975-6809, jacob.lamanna [at] nist.gov (jacob[dot]lamanna[at]nist[dot]gov) • D. Jacobson, 301-975-6207, david.jacobson [at] nist.gov (david[dot]jacobson[at]nist[dot]gov) • E. Baltic, 301-975-4842, eli.baltic [at] nist.gov (eli[dot]baltic[at]nist[dot]gov) • D. Hussey, 301-975-6465, daniel.hussey [at] nist.gov (daniel[dot]hussey[at]nist[dot]gov) |
| BT4 Triple-Axis Spectrometer | • W. Ratcliff, 301-975-4316, william.ratcliff [at] nist.gov (william[dot]ratcliff[at]nist[dot]gov) |
| BT5 Ultra-Small Angle Neutron Scattering (USANS) | • J. G. Barker, 301-975-6732, john.barker [at] nist.gov (john[dot]barker[at]nist[dot]gov) • P. D. Butler, 301-975-2028, paul.butler [at] nist.gov (paul[dot]butler[at]nist[dot]gov) |
| BT7 Double Focusing Triple-Axis Spectrometer | • Y. Zhao, 301-975-2164, yang.zhao [at] nist.gov (yang[dot]zhao[at]nist[dot]gov) • W. Ratcliff, 301-975-4316, william.ratcliff [at] nist.gov (william[dot]ratcliff[at]nist[dot]gov) • N. Butch, 301-975-4863, nicholas.butch [at] nist.gov (nicholas[dot]butch[at]nist[dot]gov) |
| BT8 Engineering Diffractometer (BT-8) | • T. Gnäupel-Herold, 301-975-5380, thomas.gnaeupel-herold [at] nist.gov (thomas[dot]gnaeupel-herold[at]nist[dot]gov) |
| BT9 Multi-Angle Crystal Spectrometer (MACS) (CHRNS) | • J. A. Rodriguez-Rivera, 301-975-6019, jose.rodriguez [at] nist.gov (jose[dot]rodriguez[at]nist[dot]gov) • Y. Qiu, 301-975-3274, yiming.qiu [at] nist.gov (yiming[dot]qiu[at]nist[dot]gov) |
| VT5 Thermal Prompt-Gamma Activation Analysis | • R. L. Paul, 301-975-6287, rick.paul [at] nist.gov (rick[dot]paul[at]nist[dot]gov) |
| NGA′ Cold Neutron Depth Profiling (NDP) | • J. Weaver, 301-975-6311, jamie.weaver [at] nist.gov (jamie[dot]weaver[at]nist[dot]gov) |
| NGA Neutron Spin Echo Spectrometer (NSE) (CHRNS) | • A. Faraone, 301-975-5254, antonio.faraone [at] nist.gov (antonio[dot]faraone[at]nist[dot]gov) • M. Nagao, 301-975-5505, michihiro.nagao [at] nist.gov (michihiro[dot]nagao[at]nist[dot]gov) |
| NGB 10m Small Angle Neutron Scattering (SANS) (nSoft) | • P. D. Butler, 301-975-2028, paul.butler [at] nist.gov (paul[dot]butler[at]nist[dot]gov) |
| NGB 30m Small Angle Neutron Scattering (SANS) | • J. Seppala, 301-975-2836, jonathan.seppala [at] nist.gov (jonathan[dot]seppala[at]nist[dot]gov) • K. Weigandt, 301-975-8396, kathleen.weigandt [at] nist.gov (kathleen[dot]weigandt[at]nist[dot]gov) • T. Martin, 301-975-8866, tyler.martin [at] nist.gov (tyler[dot]martin[at]nist[dot]gov) |
| NGC Neutron Lifetime | • S. Hoogerheide, 301-975-8582, shannon.hoogerheide [at] nist.gov (shannon[dot]hoogerheide[at]nist[dot]gov) • H. P. Mumm, 301-975-8355, hans.mumm [at] nist.gov (hans[dot]mumm[at]nist[dot]gov) • M. S. Dewey, 301-975-4843, maynard.dewey [at] nist.gov (maynard[dot]dewey[at]nist[dot]gov) • J. Nico, 301-975-4663, jeffrey.nico [at] nist.gov (jeffrey[dot]nico[at]nist[dot]gov) |
| NGD Multi-Angle Grazing-Incidence K-vector Reflectometer (MAGIK) | • F. Heinrich, 301-975-4507, frank.heinrich [at] nist.gov (frank[dot]heinrich[at]nist[dot]gov) • S. K. Satija, 301-975-5250, satija [at] nist.gov (satija[at]nist[dot]gov) |
| NGD Polarized Beam Reflectometer/Diffractometer (PBR) | • C. F. Majkrzak, 301-975-5251, charles.majkrzak [at] nist.gov (charles[dot]majkrzak[at]nist[dot]gov) • J. Borchers, 301-975-6597, julie.borchers [at] nist.gov (julie[dot]borchers[at]nist[dot]gov) |
| NGD Cold-Neutron Prompt-Gamma Neutron Activation Analysis (PGAA) | • R. L. Paul, 301-975-6287, rick.paul [at] nist.gov (rick[dot]paul[at]nist[dot]gov) • H. H. Chen-Mayer, 301-975-5595, heather.chen-mayer [at] nist.gov (heather[dot]chen-mayer[at]nist[dot]gov) |
| NG1 Chromatic Analysis Neutron Diffractometer or Reflectometer (CANDOR) (CHRNS) | • A. Grutter, 301-975-4198, alexander.grutter [at] nist.gov (alexander[dot]grutter[at]nist[dot]gov) • D. Hoogerheide, 301-975-8839, david.hoogerheide [at] nist.gov (david[dot]hoogerheide[at]nist[dot]gov) • B. Maranville, 301-975-6034, brian.maranville [at] nist.gov (brian[dot]maranville[at]nist[dot]gov) |
| NG2 High-Flux Backscattering Spectrometer (HFBS) (CHRNS) | • M. Tyagi, 301-975-2046, madhusudan.tyagi [at] nist.gov (madhusudan[dot]tyagi[at]nist[dot]gov) • R. Azuah, 301-975-5604, richard.azuah [at] nist.gov (richard[dot]azuah[at]nist[dot]gov) |
| NG3 Very Small Angle Neutron Scattering (vSANS) (CHRNS) | • E. Kelley, 301-975-8584, elizabeth.kelley [at] nist.gov (elizabeth[dot]kelley[at]nist[dot]gov) • Y. Liu, 301-975-6235, yun.liu [at] nist.gov (yun[dot]liu[at]nist[dot]gov) • J. Gaudet, 301-975-5010, jonathan.gaudet [at] nist.gov (jonathan[dot]gaudet[at]nist[dot]gov) • R. P. Murphy, 301-975-8544, ryan.murphy [at] nist.gov (ryan[dot]murphy[at]nist[dot]gov) • C. Gagnon, 301-975-2020, cedric.gagnon [at] nist.gov (cedric[dot]gagnon[at]nist[dot]gov) |
| NG4 Disk Chopper Spectrometer (DCS) | • G. Xu, 301-975-4144, guangyong.xu [at] nist.gov (guangyong[dot]xu[at]nist[dot]gov) • W. Zhou, 301-975-8169, wei.zhou [at] nist.gov (wei[dot]zhou[at]nist[dot]gov) • C. M Brown, 301-975-5134, craig.brown [at] nist.gov (craig[dot]brown[at]nist[dot]gov) |
| NG6 Cold Neutron Imaging Instrument (CNII) | • D. Hussey, 301-975-6465, daniel.hussey [at] nist.gov (daniel[dot]hussey[at]nist[dot]gov) • E. Baltic, 301-975-4842, eli.baltic [at] nist.gov (eli[dot]baltic[at]nist[dot]gov) • D. Jacobson, 301-975-6207, david.jacobson [at] nist.gov (david[dot]jacobson[at]nist[dot]gov) • J. LaManna, 301-975-6809, jacob.lamanna [at] nist.gov (jacob[dot]lamanna[at]nist[dot]gov) |
| NG7 30m Small Angle Neutron Scattering (SANS) | • S. Teixeira, 301-975-4404, susana.marujoteixeira [at] nist.gov (susana[dot]marujoteixeira[at]nist[dot]gov) • J. G. Barker, 301-975-6732, john.barker [at] nist.gov (john[dot]barker[at]nist[dot]gov) • J. Gaudet, 301-975-5010, jonathan.gaudet [at] nist.gov (jonathan[dot]gaudet[at]nist[dot]gov) • J. R. Krzywon, 301-975-6650, jkrzywon [at] nist.gov (jkrzywon[at]nist[dot]gov) |
| NG7 Neutron Interferometer & Optics Facility (NIOF) | • M. Huber, 301-975-5641, michael.huber [at] nist.gov (michael[dot]huber[at]nist[dot]gov) • S. Hoogerheide, 301-975-8582, shannon.hoogerheide [at] nist.gov (shannon[dot]hoogerheide[at]nist[dot]gov) |
| NG7 Quantum-Based Neutron Interferometer Facility | • M. Huber, 301-975-5641, michael.huber [at] nist.gov (michael[dot]huber[at]nist[dot]gov) • S. Hoogerheide, 301-975-8582, shannon.hoogerheide [at] nist.gov (shannon[dot]hoogerheide[at]nist[dot]gov) |
| Other Activation Analysis Facilities | • N. Sharp, 301-975-3926, nicholas.sharp [at] nist.gov (nicholas[dot]sharp[at]nist[dot]gov) • R. L. Paul, 301-975-6287, rick.paul [at] nist.gov (rick[dot]paul[at]nist[dot]gov) |
| NG6 α-γ: Absolute Neutron Counter | • M.S. Dewey, 301-975-4843, maynard.dewey [at] nist.gov (maynard[dot]dewey[at]nist[dot]gov) • H.P Mumm, 301-975-8355, hans.mumm [at] nist.gov (hans[dot]mumm[at]nist[dot]gov) |
| NG7 Neutron Test Station (PHADES) | • S. Watson, 301-975-6232, shannon.watson [at] nist.gov (shannon[dot]watson[at]nist[dot]gov) |
User Office
• J. Keyser, 301-975-8200, julie.keyser [at] nist.gov (julie[dot]keyser[at]nist[dot]gov)
• B. Ogg, 301-975-8200, rebecca.ogg [at] nist.gov (rebecca[dot]ogg[at]nist[dot]gov)
Created February 19, 2026, Updated July 27, 2026