MAMDOUH NASR, PhD
RF Integrity Engineer, Apple Inc.
RF Integrity Engineer, Apple Inc.
RF engineering, microwave matching and distribution networks, accelerator physics, computational electromagnetic, multi-radio coexistence, radio wave propagation, quantum mechanics, biomedical devices.
PhD in Electrical Engineering, Stanford University, CA, USA, 2014 – 2021
GPA: 4.05/4.00,
Thesis: “Distributed-Coupling Linear Particle Accelerators”,
Advisor: Prof. Sami Tantawi
MSc in Electronics and Communications Engineering, Cairo University, Cairo, Egypt, 2011-2014
GPA: 4.00/4.00,
Thesis: “Application of the Eigenmode Projection Technique to Electromagnetic Scattering and Resonance Problems”,
Advisors: Prof. Tamer Abuelfadl, and Prof. Islam Eshrah
BSc in Electronics and Communications Engineering, Cairo University, Cairo, Egypt, 2006-2011
GPA: 90.7% (top 3% in class) – “Distinction with honor”,
Thesis: “Low-Power Implantable Pressure Sensor Interface for Biomedical Applications (ASIC)”,
Thesis Advisor: Prof. Amr Hafez, Thesis Sponsor: Si-Ware Systems Co., Cairo, Egypt.
Signal Integrity - RF Integrity Engineer, Apple Inc., Cupertino, CA, USA, Feb. 2021 – Present
Engaging with cross-disciplinary teams to develop Systems on Chip for Apple’s mobile devices.
Specifically responsible for developing methodology to solve very complex coupling issues, mitigating multi-radio coexistence problems at IC, package/module, and systems.
Designing critical RF components as part of novel integration topologies.
Research Assistant, SLAC National Accelerator Laboratory, CA, USA, Sept. 2014 – Feb. 2021
Developed the distributed-coupling particle accelerator technology, a novel technology that adds more degrees of freedom to the optimization of linear particle accelerators leading to state-of-the-art compact designs with enhanced RF-to-beam efficiency.
Managed the setup and automation of the high-power experiments for the distributed-coupling linacs.
Developed new genetic optimization techniques for the next-generation distributed-coupling linacs.
Developed the theory and design for multi-frequency distributed-coupling accelerators.
Developed the distributed-coupling superconducting accelerator technology.
Experimentally investigated the operation of normal-conducting particle accelerators at cryogenic temperature.
Collaborated with other research institutes to apply the distributed-coupling accelerator technology for future discovery machines and biomedical applications, including: Los Alamos National Laboratory, Argonne National Laboratory, Lawrence Berkeley National Laboratory, University of California at Los Angeles, University of California at Berkeley, Cornell University, and Arizona State University.
Visiting Researcher, High Energy Accelerator Research Organization (KEK), Japan, Sept. 2018 – Oct. 2018
Invited to KEK laboratory to work on the testing of the distributed-coupling accelerator technology as part of the US-Japan scientific collaboration.
Implemented a pulse-correction feedback scheme for Nextef A test-facility to overcome the distortion in the klystron pulse; this implementation upgraded Nextef A for standing-wave accelerator testing.
Research Assistant, American University at Cairo (AUC), Egypt, May 2013 – Oct. 2013
Project: “Innovative Non-invasive Blood Sugar Level Monitoring for Diabetes Using (UWB) Sensor” funded by National Telecom Regulatory Authority (NTRA), Egypt.
Modeled scattering by blood vessels and used neural networks to solve inverse scattering problems.
Research Assistant, EECE Department, Cairo University, Egypt, Sept. 2011 – Sept. 2014
Developed the Eigenmode Projection Technique for electromagnetic scattering from arbitrary-shaped objects and cavity resonance problems.
Assistant Lecturer, EECE Department, Cairo University, Egypt, Sept. 2011 – June 2014
Teaching Assistant, EECE Department, Cairo University, Egypt, Sept. 2011 – June 2014
Tutorials: Antennas and optical Engineering, Time-Varying Fields, Electrostatic Fields, Resonant Circuits, Fundamentals of Circuits, Digital Electronic Circuits
Laboratories: Gunn Oscillator and Rectangular waveguides, Microwave Circuits and Components, Antenna Measurements and LASER Transceiver System, Control Systems Modeling
2020, First place award of the Student Prize Competition of the 30th International Linear Accelerator Conference 2020
2018, Siemann Graduate Fellowship in Physics at Stanford University for outstanding graduate students working on accelerator research.
2014, Eltoukhy Family Graduate Fellowship for PhD in Electrical Engineering Department, Stanford University.
2013, Student travel grant of the 43rd European Microwave Conference (EuMC), the main event in the European Microwave Week 2013.
2013, Honored by EECE Department, Cairo University for the department accreditation by the National Authority of Quality and Accreditation of Education (NAQAAE), Egypt.
2012, Teaching Assistantship by EECE Department, Cairo University.
2011, Masters’ fellowship in Electronics and Communications Engineering at Cairo University.
2011, First place award in Dr. Tarek Gamal Eldin’s graduation projects contest at Cairo University.
2021, Invited talk on “Distributed coupling Linacs from Room Temperature to Superconducting” at Argonne National Laboratory High Energy Physics Seminar.
2020, Invited talk on “Distributed coupling Linacs from Room Temperature to Superconducting” at Jefferson Laboratory Accelerator Seminar.
2020, Invited talk on “Distributed coupling Linacs from Room Temperature to Superconducting” at the 30th International Linear Accelerator Conference 2020 (LINAC’20).
2020, Invited talk on “Cryogenic-Copper Accelerating Structures: New Frontier for Beam Brightness, Efficiency and Cost-Capability” at the International Particle Accelerator Conference (IPAC’20).
2019, Invited talk on “Cryogenic-Copper Accelerating Structures: New Frontier for Beam Brightness, Efficiency and Cost-Capability” at the workshop on the Physics and Applications of High Brightness Beams (HBB’19)
2018, Invited talk on “Research activities at SLAC on Normal Conducting RF Accelerators” at KEK Accelerator Seminar.
2017, Talk on the “Designs and High-Power Tests of Distributed Coupling Linacs” at the International Workshop on High-Gradient Acceleration (HG’2017).
2016-2019, Co-Director, Science Teaching through Art (STAR) student-run program at Stanford University. STAR is dedicated to bridging the gap between scientists and the general public by focusing on visual media and organizing info-graphics, video editing, 3D-printing workshops as well as many other activities.
While serving as the Co-Director of STAR:
STAR reached out to more than 500 students in community colleges and high schools, where Stanford researchers presented their work in an artistic and simplified ways to give students a passion for science and introduce them to a variety of research topics.
STAR was a four-time awardee of the Student Projects for Intellectual Community Enhancement (SPICE) awards from the Office of Vice-Provost for Graduate Education, Stanford University.
RF experimental testing – Hardware: RF experimental design, experience with: RF sources, function generators, trigger boxes, network analyzers, RF Mixers, power meters, digitizing cards.
RF experimental testing – Software: automation, modeling, data collection, and real-time analysis using Labview and Matlab.
Electromagnetic simulators: ANSYS (HFSS, Q3D, SIWave, PSI), CST, PowerSI
Computational electromagnetic: developing software for FEM, FDTD, FDFD, MoM, EPT
Integrated circuit design: Cadence Virtuoso
Others: C/C++, Assembly, Mathematica, Matlab, Simulink, Labview
PhD: Analog Integrated Circuits, Semiconductor Devices, VLSI Systems, Optical Micro and Nanocavities, Applied Quantum Mechanics, Autonomous Implantable Systems, Numerical Electromagnetics, and Accelerator Physics.
MSc: Advanced Electromagnetics, Computational Electromagnetics, Antennas and Scatterers, Analog Design, High-Power Microwave Sources, Microwave Circuits, and Optical Fiber Systems.
M. Nasr et. al. “Experimental demonstration of particle acceleration with normal conducting accelerating structure at cryogenic temperature”, Physical Review Accelerators and beams 24.9 (2021): 093201.
J. B. Rosenzweig et al. "An ultra-compact x-ray free-electron laser." New Journal of Physics 22.9 (2020): 093067.
Lukin, D.M. et al. “Spectrally reconfigurable quantum emitters enabled by optimized fast modulation.” npj Quantum Inf 6, 80 (2020).
S. Tantawi, M. Nasr, Z. Li, C. Limborg, and P. Borchard "Design and demonstration of a distributed-coupling linear accelerator structure." Physical Review Accelerators and Beams 23.9 (2020): 092001.
K. Bane et. al., “An advanced NCRF linac concept for a high energy e+ e- linear collider,” SLAC-PUB, vol. 17301, 2018.
S. A. Kernasovskiy et. al., “Slac microresonator radio frequency (smurf) electronics for read out of frequency-division-multiplexed cryogenic sensors,” Journal of Low Temperature Physics, vol. 193, no. 3, pp. 570-577, Nov 2018.
M. H. Nasr, M. A. Othman, I. A. Eshrah, and T. M. Abuelfadl, “Solution of cavity resonance and waveguide scattering problems using the eigenmode projection technique,” Journal of Applied Physics, vol. 121, no. 14, p. 143105, 2017.
M. H. Nasr, I. A. Eshrah, and T. M. Abuelfadl, “Electromagnetic scattering from dielectric objects using the eigenmode projection technique,” IEEE Transactions on Antennas and Propagation, vol. 62, no. 6, pp. 3222–3231, 2014.
AD White et. al. “Static and Dynamic Stark Tuning of the Silicon Vacancy in Silicon Carbide”, 2020 Conference on Lasers and Electro-Optics (CLEO), 1-2
M Guidry et. al. “Second-order Nonlinear Frequency Conversion and Integrated Color Centers in Silicon Carbide Nanophotonics”, Bulletin of the American Physical Society 65
M. Nasr, P. Welander, Z. Li, and S. Tantawi, “The Design of Parallel-Feed SC RF Accelerator Structure,” in 10th Int. Particle Accelerator Conf. (IPAC’19), Melbourne, Australia, May 19-24, 2019.
M. Nasr and S. Tantawi, “Corrections of Klystron Output Pulse in SW Accelerator Testing,” in 10th Int. Particle Accelerator Conf. (IPAC’19), Melbourne, Australia, May 19-24, 2019.
M. Nasr and S. Tantawi, “The design and construction of a novel dual-mode dual-frequency linac design,” in 9th Int. Particle Accelerator Conf. (IPAC’18), Vancouver, BC, Canada, April 29-May 4, 2018. JACOW Publishing, Geneva, Switzerland, 2018, pp. 4391–4394.
M. Nasr and S. Tantawi, “New geometrical-optimization approach using splines for enhanced accelerator cavities’ performance,” in 9th Int. Particle Accelerator Conf. (IPAC’18), Vancouver, BC, Canada, April 29-May 4, 2018. JACOW Publishing, Geneva, Switzerland, 2018, pp. 4395–4397.
P. Welander, M. Nasr, Z. Li, and S. Tantawi, “Parallel-feed SRF accelerator structures,” in 9th Int. Particle Accelerator Conf. (IPAC’18), Vancouver, BC, Canada, April 29-May 4, 2018. JACOW Publishing, Geneva, Switzerland, 2018, pp. 3835–3837.
M. Nasr and S. Tantawi, “A novel dual-mode dual-frequency linac design,” in 8th Int. Particle Accelerator Conf. (IPAC’17), Copenhagen, Denmark,14-19 May 2017. JACOW, Geneva, Switzerland, 2017, pp. 1634–1636.
A. Vrielink, M. Nasr, and S. Tantawi, “A 2D finite element solver for electromagnetic fields with m-fold azimuthal symmetry,” in 8th Int. Particle Accelerator Conf. (IPAC’17), Copenhagen, Denmark,14-19 May,2017. JACOW, Geneva, Switzerland, 2017, pp. 3211–3213.
A. Vrielink, M. Nasr, and S. Tantawi, “Derivation of a finite element formulation from a lagrangian for the electromagnetic potentials,” in 8th Int. Particle Accelerator Conf. (IPAC’17), Copenhagen, Denmark,14-19May,2017. JACOW, Geneva, Switzerland, 2017, pp. 3208–3210.
S.Tantawi, M.Nasr, "Designs and High Power Tests of Distributed Coupling Linacs" IFIC, Jun. 13-16, 2017 , Valencia
M. Nasr, P. Emma, and S. Tantawi, “A CW normal conducting rf cavity for fast chirp control in the LCLS-II,” in 7th Int. Particle Accelerator Conf. (IPAC’16), Busan, Korea, May8-13,2016. JACOW, Geneva, Switzerland, 2016, pp. 1817–1819.
M. H. Nasr, I. A. Eshrah, and T. M. Abuelfadl, “Wideband analysis of scattering problems using an eigenmode projection technique,” in Microwave Conference (EuMC), 2013 European. IEEE, 2013, pp. 1231–1234.
M. H. Nasr, I. A. Eshrah, and T. M. Abuelfadl, “Solution of electromagnetic scattering problems using an eigenmode projection technique,” in Antennas and Propagation Society International Symposium (APSURSI), 2013IEEE. IEEE, 2013, pp. 1312–1313.