Past Graduate Students

Rana Ashkar: Dynamical Theory Applications to Neutron Scattering
Rana Ashkar worked on the SESAME experiment which is designed to measure correlations along surfaces and in bulks. She developed a dynamical theory calculation to explain the results of SESAME on periodic samples. Her thesis was on "Dynamical theory applications to neutron scattering from periodic nanostructures." 
Nick Armstrong Nick Armstrong: Neutron Interferometry
Nick worked with the LENS group from 2005 to 2006. His primary activities were in neutron interferometry and he also conducted experiments at the NCNR reactor facility at NIST in Gaithersburg, Maryland.
Kun Chen Kun Chen: Neutron Radiography
Kun's research project and thesis focused on neutron radiography. The project included the development of a variable-wavelength radiography camera at LENS together with imaging studies performed at the Paul Scherrer Institute in Switzerland.
Peipei Chen Peipei Chen (UIUC NE): Development of a Hypervapotron Be Target
Peipei was a student in the Nuclear Engineering department of the University of Illinois in Urbana-Champaign. His thesis involves a systematic study of the hypervapotron cooling of the type that is used in the high-power LENS target. He performed the primary engineering work on this target as part of his thesis.
Giovanna Danagoulian Giovanna Danagoulian (UIUC NE): Modeling of SESAME
Giovanna was a student in the Nuclear Engineering department of the University of Illinois in Urbana-Champaign. Her thesis has included the development of advanced simulation tools that are needed for the correct quantum-mechanical description of polarized neutron transport in a magnetic field. This work is important for the accurate modeling of the SESAME instrument that is being developed at LENS.
Chris Lavelle Christopher Lavelle: Neutronics of the LENS Source
Chris' thesis involved the neutronic design of the LENS source. Extensive Monte Carlo (MCNP) modeling of neutron transport within the LENS Target-Moderator Reflector assembly has been combined with emission time and spectral measurements of the LENS source. His work also included studies of ways to improve the performance of the LENS source.
Fankang Li

Fankang Li
Fankang Li is a graduate student and working in Roger Pynn's group. He is now working on the design and construction of Superconducting YBCO Wollaston Prism for Spin Encoding on SESAME (Spin Echo Small Angle Measurement).

George Noid

George Noid: aCORN Experiment
George's thesis was on the aCORN experiment that is designed to measure the weak interaction asymmetry parameter "little-a." This experiment was constructed and tested at LENS before it was shipped to NCNR at the National Institute of Standards and Technology in Gaithersburg, MD, for future research runs.

Tim Prisk

Timothy Prisk
Timothy Prisk investigated the collective excitations and momentum distributions of confined quantum liquids by means of inelastic neutron scattering.  Under the guidance of Paul Sokol, he participated in a number of X-ray and neutron scattering experiments at local and national facilities.

Nicholas Remmes Nicholas Remmes: SANS on Nanoparticles
Nick's thesis involved the design and commissioning of the SANS instrument at LENS. He investigated the structure of both dendrimers and polymer coated magnetic nanoparticles with SANS measurements at IPNS and NIST while the SANS instrument was being constructed. In addition he studied the magnetic properties of the nanoparticles. Nick defended his thesis in the spring of 2007.
Yunchang Shin Yunchang Shin: Development of Ultra-Cold Neutron Moderators
Yun studied the low-energy properties of solid methane in order to develop scattering kernels suitable for use at temperatures below 20K (the lowest temperature for which kernels presently exist). This work is of relevance to the efforts of LENS to produce very cold neutrons and is also of importance to the development of new ideas for producing Ultra-Cold Neutrons (a topic of considerable interest to the Nuclear Physics group at IU).
Paul Stonaha Paul Stonaha
Paul Stonaha worked under Roger Pynn on developing the Spin Angle Small Angle Measurement (SESAME) device, which will be built on Neutron Beamline 4.  To this end, Paul participated in experiments at neutron sources at national labs over the course of his studies.
Bo Wang Bo Wang
Bo Wang was a condensed matter physics graduate student. He worked in Paul Sokol's group to study the microstructure and porosity of carbon dioxide storage materials via the LENS and SAXS facilities.
Tianhao Wang Tianhao Wang
Tianhao Wang was a condensed matter physics graduate student. He worked under Roger Pynn on designing a Cryogenic Super Conducting Wollaston Neutron Prism, which will introduce a spatial separation between two polarization states of a neutron.
Adam Washington Adam Washington
Adam worked on various aspects of data acquisition at LENS. He has also participated in experiments at both IPNS and LANSCE to conduct experiments on a spin-manipulation device of novel design.

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