Sunday, April 11, 2021
About Muons, Inc.
Our People
Please click the names below to expand and display more information.

President, Ph.D. (1970). Dr. Rolland P. Johnson has been actively involved in particle accelerator research and development for over 40 years. He has worked on all aspects of synchrotrons, storage rings, and light sources at several institutions. Dr. Johnson has directed several successful accelerator R & D, construction, and commissioning projects. Examples at Fermilab include H- injection into the Booster, new extraction kickers for the Booster, Booster RF cavity gradient improvement program, Tevatron low beta insertions, Tevatron Collider, and at LSU, the CAMD light source. He directed many software projects at Fermilab, CAMD, and CEBAF. He also provided technical oversight to several SBIR grants while on detail to the DOE. Dr. Johnson has extensive experience in the area of beam cooling, having participated in the commissioning and improvement programs of the CERN Antiproton Accumulator as well as the design of the Fermilab TeV I project. He has contributed original work involving simulations and implementations of stochastic cooling systems and of their associated RF systems. Dr. Johnson has experience in the design and development of magnets. He designed and built the large aperture magnets used for his thesis and was heavily involved in the commissioning of the Tevatron, where he discovered and corrected for the decay of the sextupole component of the superconducting dipoles, invented the double-helix beam separation scheme, and implemented the squeeze of the low beta interaction region quadrupoles. Besides work on methods to increase the proton flux for better muon production as seen in the Proton Driver Design Report and The Linac Afterburner Proposal, he has worked on improving ionization cooling. As the founder, president, and chief scientist at Muons, Inc. he has been the PI on several SBIR-STTR grants.
V.P. Technology Development, Ph.D. (1975). Dr. Thomas J. Roberts is Scientist and Vice President for Technology Development at MuPlus, Inc. Having spent 17 years in experimental High Energy Physics and 24 years as a Distinguished Member of Technical Staff at Bell Labs, he is a physicist and computer scientist with broad experience in all aspects of software development, systems architecture, and computational physics. Dr. Roberts is the author of G4beamline [3], a simulation program based on the Geant4 toolkit that is optimized for particle beams and systems. Dr. Roberts is also the Level 2 Manager for Cooling in the Muon Accelerator Program (MAP) [1], and an active participant in MAP’s simulation efforts.
V.P. Personnel, Ph.D. (1967). Dr. Charles M. Ankenbrandt is a senior accelerator physicist who spent most of his career at Fermilab, where he contributed for three decades to the design, operation, and improvement of Fermilab facilities. He has led the Booster Synchrotron Group, the Main Ring Group, and the Accelerator Theory Department. He invented "slip stacking" and co-invented "barrier buckets", techniques used heavily at Fermilab. He participated in the commissioning of the Tevatron as a fixed-target accelerator and as a collider. For more than a decade, first at Fermilab and since June, 2008 at Muons, Inc., he has concentrated on development of concepts and technologies relevant to neutrino factories and muon colliders.
MSEE (1977). Michael Neubauer has been actively involved in high power microwave technology for over 40 years. He has worked on all aspects of microwave tube design and manufacture at Varian Associates and designed and fabricated high power microwave components at SLAC National Accelerator Laboratory. While at Varian Mr. Neubauer held a number of positions: the position of Process Manufacturing Manager responsible for designing and maintaining process controls for a wide range of microwave technologies from High Voltage ceramics and rare-earth magnets to electron guns and thin film coatings; he also held the position of Applied Engineering Manager with the responsibility of bridging the gap between software simulations and microwave tube performance. He developed resistive coating techniques for BeO, Alumina, and Boron Nitride to eliminate charge accumulation. He has designed and tested electron guns, multi-stage depressed collectors, magnet systems, and slow wave circuits for microwave tubes. While at SLAC he designed, tested and manufactured high power microwave windows and HOM loads using HFSS, MAFIA, and ANSYS, and implemented a novel window compression ring technology which has now been successfully migrated to high power RF systems at LBNL, JLAB and LANL. He has designed klystron cavities, using the particle in cell code MAGIC, and is currently employed at Muons, Inc as their VP of Engineering. As part of the Mouns, Inc., collaboration team he has been the PI on 6 Phase I grants and 4 Phase II grants. These grants include HOM load designs, compressed coaxial and waveguide window designs, improved DC gun insulators, Phase and Frequency locked magnetrons, Crab Cavity designs, S-band Loads, and other RF sources. All of these projects included novel approaches to various problems encountered at the DOE labs.
Chief Operating Officer, Ph.D. (2005). Prior to joining Muons, Inc. in 2009, Dr. Flanagan was the Associate Head of Detector Systems at CDF. Dr. Flanagan has also served as the trigger project leader and as operations manager at CDF. He has designed, built, and commissioned real-time trigger system upgrades (hardware and software) for the Collider Detector at Fermilab (CDF). While at CDF, Dr. Flanagan was the lead physicist responsible for the first observation of vector boson pairs in a hadronic Final State at the Tevatron collider. This observation was made possible by the trigger upgrades he developed and built. Prior to working in high-energy physics, Dr. Flanagan worked in both theoretical (heterogeneous models for AC and DC conductivity in conducting polymers and carbon nanotubes) and experimental (x-ray diffraction and ellipsometry) condensed matter physics. His experience with superconductors includes work on the fabrication and testing of a prototype 3T YBCO helical solenoid segment. Additionally, Dr. Flanagan has developed control software for a fiber optics based temperature monitoring system for high temperature superconductors and worked on high performance real-time software for quench detection.
Ph.D. (1966). Dr. Robert Abrams has designed, developed, and analyzed experiments at Argonne, Brookhaven, and Fermi National Laboratories. He has worked at Brookhaven and was a tenured faculty member at University of Illinois at Chicago before joining AT&T/Lucent Bell Labs. Since 2002, he has worked on the Fermilab CKM proposal, the electromagnetic calorimeters in the MIPP experiment for the University of Michigan, and the D0 experiment proportional drift tubes and scintillators for the muon detector system and ILC muon detector R&D for Indiana University and he led experiment #T956 to test prototype ILC muon detectors Fermilab. Since joining Muons, Inc./MuPlus, Inc. he has been a lead designer of an experiment to demonstrate cooling beams of muons (MANX). He was the PI of an SBIR on fast time-of-flight MCP detectors for muon cooling experiments, and been a lead contributor to a design of a mono-energetic beam of positrons for gamma-ray interrogation of cargo containers for detection of special nuclear materials. He has had extensive experience with several types of particle detectors.
Ph.D. (1991). Dr. Mary Anne Cummings is a particle physicist with broad experience in high energy experiments in both fixed target and collider settings. Before joining Muons, Inc. she worked at Northern Illinois University as a research professor on neutrino factory and muon collider R&D, and remains on the graduate faculty there as an adjunct. Her previous experience at NIU has included work on high energy physics experiments (the Minerva and DZero experiments at Fermilab) and astrophysics experiments (for AUGER and RICE). In particular she developed techniques for primary particle ID in cosmic ray showers. She has been the spokesperson for a proposed radiocoherence experiment at Fermilab in conjunction with the RICE collaboration (now part of ICECUBE). Her primary responsibilities on DZero included heading the muon detector calibration group and heading the “alljets” top quark analysis group, in the latter developed the use of jet width differences between quarks and gluon jets as a final state discriminant in multijet events. She recently worked with the group designing a 6-dimensional cooling experiment, MANX, and is currently working with the Fermilab Muon Acceleration Program and Muon Collider Physics Group on the challenging issue of backgrounds in the interaction regions of muon colliders and Higgs Factories.
MSEE (1978). Mr. Al Dudas has a MSEE degree from Cornell University, and has worked in engineering and applied physics for over 35 years, in places as diverse as SLAC, NRL, and Siemens, among others. His experience stretches from electron gun design, to high power RF generation with klystrons and gyrotrons, to medical linear accelerators, and high energy pulsed discharge lasers. He has been a Sr. Engineer at Muons, Inc. since 2009.
Ph.D. (1972). Dr. Vadim Dudnikov is an internationally recognized expert in the invention and development of ion sources, ion beam systems, and accelerators. He received a M. Sci. from the Novosibirsk State University (NSU), Novosibirsk, Russia and, one year later, while a student at the Institute of Nuclear Physics (INP), he completed the development of the charge exchange injection, which is still considered to be the best solution to the problem of charged particle injection. While he was at the Institute of Nuclear Physics (INP), Dr. Dudnikov developed many versions of negative ion sources for application in charge exchange injection. In 1971, he discovered the enhancement of negative ion generation in gas discharge by cesium admixture and invented the method of cesium catalysis to enhance negative ion formation in a gas discharge. This method, which dramatically enhances negative ion emission, is now the most widely used method for production of intense high-brightness negative ion beams. There are currently many versions of the Dudnikov type surface plasma negative ion source (SPS) with cesium catalysis. These sources hold the record for efficiency, intensity, brightness, and optimized design. Dudnikov’s discovery of the physical basis of the cesium catalysis has led to the development of SPS in all of the National Laboratories in the USA, Japan and other countries. Cesium catalysis is used in the Neutral Beam Injector for Nuclear Fusion devices. Dr. Dudnikov is a coinventor of the Atomic Beam Polarized Ion Source (ABPIS) with resonant charge exchange ionization of atoms by negative ions generated by interaction of plasma with cesiated surface. Dr. Dudnikov has developed ion beam systems for nano-lithography. He has also developed very high brightness electro-hydrodynamic ion beam sources for many ion species. His innovations in ion beam formation, transportation, space charge neutralization, separation, accumulation, and diagnostics are widely used in accelerators and in ion beam science and technology. In the USA, Dr. Dudnikov has worked in National Laboratories (BNL, ORNL, FNAL), in Universities (UMD, MIT), and in industry (SDI, SCI). For several years he worked as a Chief Scientist at Superior Design, Inc. (SDI), Peabody, MA on the development of the next generation of ion implantation equipment. He developed a program for improving H- negative ion sources, which is now under development at FNAL.
Ph.D. (1972). Dr. Stephen Kahn most recently worked at the Advanced Accelerator Group at BNL on neutrino factory and muon collider R&D. His previous experience at Brookhaven has been varied, including work on high energy physics experiments (neutrino bubble chamber experiments and the D0 experiment) and superconducting accelerator magnets (for ISABELLE, RHIC, the SSC and the APT). Work to design superconducting magnets included 2D and 3D finite-element field calculations using the Opera2d and Tosca electro-magnetic design programs along with structural finite-element calculations with ANSYS.
Ph.D. (1975). Dr. Grigory Kazakevich received his Ph.D. from Budker Institute of Nuclear Physics on development of an X-Band microtron and a compact photo-neutron facility basing on it. He has been actively involved in accelerator physics, high power microwave technique and technology and beam diagnostics for over 40 years. He published about of 100 scientific articles in Proceedings of Conferences and top rank scientific journals. He has developed, designed and built few RF cyclic accelerators (X-Band and S-Band); some of them with record parameters. Being a Senior Scientific Researcher of Budker Institute of Nuclear Physics and a project manager he developed, built and put into operation high-current S-band microtron driven by an injection-locked 2.5 MW magnetron. He developed with his colleagues an approach and a model for simulation of the frequency and phase of injection-locked magnetrons. Being invited as a Scientific Expert at Korea Atomic Energy Research Institute (South Korea) he was one of key persons in development of Terahertz Free Electron Laser based on the S-band microtron driven by the injection-locked magnetron. The first in the world Terahertz Free Electron Laser with the microtron-injector was successfully put into operation and the Project was nominated and awarded as Best Scientific Project of Year 2001 in South Korea. Being invited as a Guest Scientist at the Fermilab Dr. G. Kazakevich developed novel technique for electron beam diagnostics for the Project of electron cooling and for A0 Photoinjector. Being involved in the MuPlus Inc. research programs Dr. G. Kazakevich proposed and substantiated a two-stage CW injection-locked magnetron to drive superconducting cavities of linacs. The scope of his professional interest includes physics and techniques of particle accelerators, high-power RF sources and diagnostics of beams and radiation.
B.A. (2012). Justin Rodriguez received a B.A. in Physics and Computer Science from Cornell University where he is currently working on a M.S. in Applied Physics.  He mainly works on accelerator codes and simulations, especially ACE3P.
Ph.D. (19xx).
B.S., J.D. (19xx).
PhD, University of Illinois at Urbana-Champaign 1966
Bob Hartline
Ph.D. (1996).Dr. Cary Y. Yoshikawa received a BS in EE from the University of Hawaii at Manoa as well as a MS and Ph.D. in Physics. He is the inventor of the grid search that enabled DZero to co-discover the top quark with CDF. He also extracted a top quark mass value by using a technique that minimized the effect of the largest systematic error plaguing the conventional methods, resulting in the world’s best systematic error for the top quark mass at time of his Ph.D. completion. Upon graduation in 1996, Dr. Yoshikawa pursued the then booming telecom industry that was fueled by the internet explosion. The highlight of his 10½ year career in telecom was a series of innovations for Homeland Security of such significance to position Dr. Yoshikawa to be owner of 1/3 the technical content in a multi-billion dollar bid, representing a team of multi-billion dollar companies. Dr. Yoshikawa left telecom in December 2006 and returned to physics by joining Muons, Inc. in January 2007. He shortly went on assignment to Fermilab as a Guest Scientist in April 2007 to support a phase II STTR grant that furthered R&D in the front end of a Neutrino Factory (NF) and Muon Collider (MC) with Dr. David Neuffer, the recognized leading authority. In January 2009, Dr. Yoshikawa returned from assignment to Muons, Inc. and has worked on a variety of projects that include upgrades to muon beamlines in the Project X era; a portable tunable gamma ray source to scan cargo for Homeland Security; the Quasi-Isochronous Helical Cooling Channel that manipulates the slip factor to enhance capture of muons for NF, MC, and Intensity Frontier experiments; the Helical Bunch Coalescer that merges particle bunches over a shorter distance than that possible over a straight channel; pi/mu production for the New g-2 experiment where he invented a technique to optimize the pion/muon yield taking into account depth of focus of a Li lens and asymmetric particle production; and is the PI of a grant to design a complete cooling channel for a MC.
Ph.D. (1999). Dr. Frank Marhauser is an accelerator scientist, who has been using all major state-of-the-art numerical RF codes for designing RF accelerators and components throughout his career at various institutes, which for instance includes MAFIA, ANSYS, HFSS, CST Studio Suite, GdfidL, Superfish, Clans, Fishpact and ACE3P. Dr. Marhauser made his PhD in Physics at the Institute of Applied Physics in Frankfurt/Germany. In 1999 he has joined the BESSY institute (now Helmholtz Zentrum Berlin), which is operating the 3rd generation synchrotron light source BESSY II. He has served as an operator in routine user shifts. Among his responsibilities were the numerical design, optimization and experimental characterization and commissioning of a patented heavily HOM-damped normal conducting 500 MHz cavity and the numerical design, fabrication and high power testing of a high brightness 1.3 GHz NC photo injector gun cavity successfully characterized at DESYs Photoinjector Test Facility in Zeuthen/Germany. In 2007 he joined JLab as staff scientist and directed the design, development, fabrication and testing of SRF accelerators and components including the cavity-string fabrication for the first 100 MeV CEBAF upgrade style cryomodule and the design, fabrication and tests of medium-beta prototypes for Fermilab’s Project-X. He was also responsible to oversee the industrial fabrication of all SRF cavities built for the CEBAF 12 GeV upgrade.
Chief Financial Officer, B.S., MBA (1989). Jim Nipper has been actively involved in the research, development and production of highly engineered systems for over 25 years. He has been a principal in several corporations and has had financial responsibility for acquisitions and operations. He has led the engineering of products and production systems in the fiber optics, automotive, semiconductor, metal, plastics, electrical products and electronics industries. He has led the introduction new products while simultaneously developing the methods and equipment to produce them. He has been involved in all phases of product development from concept to production. He has also managed the development of systems engineered across Europe, for sale and use around the world. In addition to his experience in engineering and product development, Mr. Nipper has extensive international experience in the production, operations and sales of products. He has been responsible for products manufactured globally and sold throughout North America. He has been responsible for manufacturing and sales organizations charged with the introduction of new products to international markets. He has the necessary skills to manage R&D, and the experience to see it carried through to successful commercialization.