(630) 252-4911 (office)
(773) 935-9094 (home)
esl (at) phy.anl.gov
Dr. Lessner is a physicist with extensive experience in the physics
and technology of particle acceleration systems. For the past fifteen
years she has worked in the design and maintenance of electron and
heavy-ion linear accelerators, proton synchrotrons, and X-ray sources.
She did her thesis in General Relativity at the University of Chicago
and complete coursework for the Doctor of Philosophy degree at Syracuse
University. Her research focuses on particle beam dynamics, in
particular on single- and multiple-particle-beam effects, derivation of
analytical models and algorithms, optimization of design parameters for
future accelerators, and solutions to design-performance deviations in
existing accelerators. She also conducted fault analysis, and leaded
the Failure Mode and Effects Analysis (FMEA) and Reliability,
Availability, and Maintainability (RAM) project for the Rare Isotope
Accelerator (RIA) facility.
Conducted RAMI & FMEA studies for the RIA facility, using both hardware and functional approaches to identify the most probable failure modes and investigate effects of failure on performance. Demonstrated that, with appropriate design redundancy and superconducting properties of the machine elements, RIA can achieve a high availability of ~ 95%. Results will be used as part of an iterative process to optimize the driver linac design for cost and technical performance.
Designed an algorithm for multiple-charge-state-beam steering in heavy-ion linacs that obeys lattice restrictions imposed by multiple-charge-state acceleration, and is suitable for experimental implementation. The algorithm is fully four-dimensional, corrects position and slope, takes into consideration the strong coupling introduced by steering solenoids, and is fully implemented into Argonne’s TRACK simulation code.
Contributed extensively to the design of the Intense Pulsed Neutron Source Upgrade. Designed a minimum-loss capture and acceleration program for high-current proton beams that includes space-charge effects. Wrote code to simulate tracking of high-intensity beams. Code is used in the Intense Pulsed Neutron Source at Argonne and was used as a benchmark code at the Spallation Neutron Source facility.
Modeled single-particle and collective effects in electron beams.
Analyzed and developed corrective methods for high-current-field
effects in the Low Energy Undulator Test Line (LEUTL). Following a
dynamic-aperture-reduction criterion established a tolerance budget for
component misalignments and construction errors in the Advanced Photon
Source (APS).
Principal Co-Investigator of a Laboratory Director
Research and Development (LDRD) three-year project for the design of a
high-yield slow-positron source. Optimized design of a multi-component
target achieving maximum positron yield.
Responsible for developing software useful to the
high-energy-physics community, and consulting on mathematical and
statistical problems. Implemented interface of the minimization code
MINUIT to PAW, an interactive graphical data analysis program developed
at CERN. Developed a back-propagation neural-network program for
particle tracking in straw-chambers trigger system. Designed and
implemented a utility to dump, analyze, and map magnetic field data.
Investigated effects of long-wavelength electromagnetic fields.
Devised method to simulate very-short-wavelength fields with
computationally economic grids. Applied inverse-scattering methods and
signal processing techniques to geophysical data.
Ph. D. in Physics
University of Chicago, Chicago,
Illinois. Work on the doctoral thesis “Conserved Quantities Associated
with the Bel-Robinson Tensor”.
Syracuse University, Syracuse, New York. Coursework for doctorate in physics.
MSc. in Physics
Brazilian Center for Physics Research (CBPF), Rio de Janeiro, Brazil.
BSc.
Parana University, Parana, Brazil.
Strong advocate of networking and support of diversity at Argonne National Laboratory.
Member elect of Argonne’s Women and Science and Technology (WIST)
Steering Committee. Facilitate communication among women within the
Laboratory and between women and management. Serve on professional and
career development, communications, and outreach subcommittees and
activities.
Initiator of First Friday Forum meetings. Planned, organized, and led
monthly Laboratory-wide meetings addressing scientific and technical
issues of particular interests to the scientific & technical
(S&T) women.
Brazilian National Research Council Scholarship for Advanced Studies.
Gold Medal for Academic Excellence, Parana University, Brazil.
E. S. Lessner “Development and Application of Steering Algorithms
for Multiple-Charge State Beams in Linear Accelerators,” to be
submitted to Physics Review Special Topics.
E. S. Lessner and P.
N. Ostroumov, “Availability and Reliability in a High-Intensity Linear
Accelerator,” 34th International. Comm. Future Accel. Advanced Beam
Dynamics Proceedings (2005).
S. V. Milton et al, “Observation of Self-Amplified Spontaneous Emission
and Exponential Growth at 530nm,” Physical Review Letters, Vol. 85, No
5, pp. 988 (2000).
Marion M. White and Eliane S. Lessner, “A Low-Neutron Background
Slow-Positron Source,” Applied Surface Science 149, pp. 20-23 (1999).
E. Lessner, Y. Cho, K. Harkay, and K. Symon, “Longitudinal Tracking
Studies for a High Intensity Proton Synchrotron,” AIP Conference
Proceedings 377, pp. 375-390 (1996).
E. Lessner, “Weighted Fit of Parametric Functions to Distributions. The
New Interface of HBOOK and MINUIT,” Computer Physics Communications 57,
pp. 385-389 (1989).