2021FRIB/NSCL Graduate Brochure

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Paul Gueye Associate Professor of Physics Experimental Nuclear Physics Selected Publications D. Votaw et al., Shell inversion in the unbound N = 7 isotones, Phys. Rev., C102, 014325 (2020) MS, Physics, Université Cheikh Anta Diop, Senegal, 1990 PhD, Physics, Université Clermont- Ferrand II, France, 1994 Joined <strong>NSCL</strong> in September 2018 gueye@nscl.msu.edu T. Redpath et al., New Segmented Target for Studies of Neutron Unbound Systems, Nucl. Inst. Meth. Phys. Res., A977, 164284 (2020) P. Guèye et al., Dispersive Corrections to the Born Approximation in Elastic Electron-Nucleus Scattering in the Intermediate Energy Regime, Eur. Phys. Jour. A56:126 (2020) S. B. L. Amar, O. Ka and P. Guèye, Meson Photo- Production in GEANT4 for Ev = 0.225–3.0 GeV using the y+ p yp+ π0 reaction, Eur. Phys. J. A 55:62 (2019) D. Abbott et al., Production of Highly Polarized Positrons Using Polarized Electrons at MeV Energies, PRL 116, 214801 (2016) The nucleus of the simplest atom (hydrogen) is composed of a single proton. With the addition of one neutron, a heavier hydrogen (deuteron) atom can be formed but this is also when nucleon-nucleon interactions start to occur inside nuclei. How does nature went from hydrogen to heavier elements? How do nucleons interact? What happens when many more nucleons are packed into a small pace? What if there are more neutrons than protons (or vice versa) and how to make them? These and many more questions are vitals to our understanding of the universe. My research interest is in experimental nuclear physics with a focus on neutron-rich isotopes along the neutron dripline. I am a member of the MoNA Collaboration that has a long history of studying the properties of neutron-unbound nuclei. We probe their formation and unravel their nuclear structures. This research provides important insights into the nucleon–nucleus interaction far from stability, the coupling to the continuum in neutron-rich systems, and the structure of multi-neutron halos or skins. We use the invariant mass spectroscopy as the primary technique to probe resonance states using the 4-momenta of the neutron rich decay products (fragments and neutrons). There are two devices uniquely suited to conduct my research: the MoNA-LISA modular neutron array (288 plastic scintillators bars of 10x10x200 cm 3 ) and a 4 Tm large gap superconducting sweeper magnet. We also constructed a Be-Si segmented target that improves greatly our energy resolution using position-sensitive silicon detectors and permits to increase the effective length of (passive) reaction targets to unravel processes with very low probabilities. This expertise was utilized to develop a new Si-CsI telescope to identify heavy ions from their energy loss (Si) and total energy (CsI) to enable a new complementary sweeperless experimental scientific program. I am also utilizing my expertise from electron scattering to enhance our existing research thrusts by: (i) designing and testing a highly segmented GEM (gas electron multiplier)- based active target that houses several thin (250-500 μm) beryllium foils for the detection of low energy recoils to enable the missing mass technique for additional insights into the reaction mechanisms and dynamics of neutron-rich nuclei; (ii) developing the next generation neutron detectors to provide unprecedented position (100s μm) and timing (tens of ps) resolution to upgrade the MoNA-LISA array for the upcoming Facility for Rare Isotope Beams; (iii) building a GEANT4 Monte Carlo simulation general framework to study neutron-rich nuclei; and (iv) investigating the possibilities of polarized targets to study spin dependent observables for rare isotope research. 34 KEYWORDS Neutron Dripline | Nuclear Structure | MoNA-LISA Weakly-Bound Nuclear Systems Scientific discoveries require a diverse pool of students each with their unique talents and abilities. My group is reflective of my passion to provide exciting opportunities for students from multi-disciplinary background interested in gaining some knowledge and contributing to basic and applied nuclear physics fields.
Yue Hao Associate Professor of Physics Accelerator Physics MS, in Physics, Indiana University, 2005 PhD, Physics, Indiana University, 2008 BSc in Physics, University of Science and Technology of China, 2003 Joined FRIB in 2016 hao@frib.msu.edu Selected Publications ‘Electron-Ion Collider: The next QCD frontier’, The European Physical Journal A, 52, 9 (2016) Y.Hao, et.al. ‘Beam-beam Effects of ‘Gearchanging’ in Ring-Ring Colliders’, PRAB. 17, 041001 (2014). Y. Hao, et.al. ‘Study and Mitigation of the Kink Instability in the ERL-based Electron Ion Collider’, PRAB, 16, 101001 (2013) Y. Hao and V. Ptitsyn, ‘Effect of Electron Disruption in the ERL based eRHIC’, PRAB, 13, 071003 (2010) My research group focuses on in-depth understandings of accelerator physics. Our goal is to find elegant approaches to achieve a high-intensity and high-quality beam of charged particles in an accelerator. Such a beam provides a powerful tool in various fields, such as high energy/nuclear physics, condensed matter physics, biology/chemistry, medical and industrial applications. The main approach of my group is the theoretical analysis and corresponding computer simulation. One of the challenging topics in accelerator physics is nonlinear dynamics. The nonlinearity arises from the inevitable nonlinear devices, as well as the self-interaction among the charged particles. We analyze the dynamics using nonlinear differential equations or the nonlinear maps. Following the pioneering work by the French mathematician, H. Poincare, we develop analytical tools to analyze the phase space of the charged particles. The figure below shows the phase contour of the simplest nonlinear element in an accelerator. When attacking the nonlinearity from interactions of charged particles, we usually involve the high-performance computation as a powerful tool. The right bottom plot of the left column shows the phase space when two beams of charged particles meet together. The upcoming exascale computation facility presents a great challenge but also opportunity to extend the scale of the analysis. By understanding the nonlinear dynamics better, we expect to achieve a brighter beam in the circular accelerators. In addition to the theoretical studies, to achieve a desirable performance of accelerator, we also need precise control of each tunable parameter of the accelerator, based on the observation with beam diagnostic tools. The below figure demonstrates that we use a statistics tool, Bayesian inference, to infer the parameters, which are hard to measure directly, using the diagnostic data and accelerator model. KEYWORDS Theoretical Accelerator Physics | Nonlinear Dynamics High-Performance Computation 35
Page 3 and 4: TABLE OF CONTENTS 1 TABLE OF CONTEN
Page 5 and 6: As a campus-based national user fac
Page 7 and 8: NUCLEAR SCIENCE AT MSU Nuclear scie
Page 9 and 10: On March 19, 2020, FRIB accelerated
Page 11 and 12: MSU CRYOGENIC INITIATIVE The demand
Page 13 and 14: FRIB THEORY ALLIANCE The FRIB Theor
Page 15 and 16: GRADUATE STUDENT LIFE When you are
Page 17 and 18: CAREERS Your success as a graduate
Page 19 and 20: ANIA KWIATKOWSKI PhD IN PHYSICS, 20
Page 21 and 22: THE LANSING AREA Capital city Lansi
Page 23 and 24: Recreation Many recreational activi
Page 25 and 26: Daniel Bazin Research Senior Physic
Page 27 and 28: Georg Bollen University Distinguish
Page 29 and 30: Edward Brown Professor of Physics T
Page 31 and 32: Kaitlin Cook Assistant Professor of
Page 33 and 34: Pawel Danielewicz Professor of Phys
Page 35: Venkatarao Ganni Director of the MS
Page 39 and 40: Morten Hjorth-Jensen Professor of P
Page 41 and 42: Pete Knudsen Senior Cryogenic Proce
Page 43 and 44: Steven Lidia Senior Physicist and A
Page 45 and 46: Steven Lund Professor of Physics Ac
Page 47 and 48: Kei Minamisono Research Senior Phys
Page 49 and 50: Fernando Montes Research Staff Phys
Page 51 and 52: Filomena Nunes Professor of Physics
Page 53 and 54: Peter Ostroumov Professor of Physic
Page 55 and 56: Ryan Ringle Research Senior Physici
Page 57 and 58: Hendrik Schatz University Distingui
Page 59 and 60: Bradley Sherrill University Disting
Page 61 and 62: Artemis Spyrou Professor of Physics
Page 63 and 64: Betty Tsang Professor (FRIB/NSCL) E
Page 65 and 66: Christopher Wrede Associate Profess
Page 67 and 68: Remco Zegers Professor of Physics E
Page 69 and 70: HOW TO APPLY Now that you’ve read

2021FRIB/NSCL Graduate Brochure

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