202 FRIB Graduate Brochure

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Hironori Iwasaki Professor of Physics Keyword: Nuclear Structure, Nuclear Spectroscopy, TRIPLEX, Weakly-bound nuclear systems, GRETINA Experimental Nuclear Physics About • MS, Physics, University of Tokyo, 1998 • PhD, Physics, University of Tokyo, 2001 • Joined the laboratory in September 2009 • iwasaki@frib.msu.edu Research My research focuses on the investigation of the structure and dynamics of rare isotopes which have unusual protonto-neutron ratios compared to stable nuclei that exist in nature. These exotic nuclei, which can be produced at Facility for Rare Isotope Beams (FRIB), often exhibit surprising phenomena such as nuclear halo characterized by valence neutrons with spatially extended wave functions and shape coexistence with competing nuclear shapes manifested in a single nuclear level. We provide precise and accurate nuclear data from lifetime and spectroscopy experiments and, through comparisons to advanced theory, we try to understand the forces that bind nucleons into nuclei, test the symmetry in atomic nuclei, answer questions concerning the astrophysical origin of nuclear matter, and address societal needs related to nuclear science. In our experiments, we utilize the combination of the state-of-the-art equipment, including GRETINA, TRIPLEX, and S800 spectrograph, to achieve model-independent measurements of excitedstate lifetimes. How Students can Contribute as Part of my Research Team In my research group, graduate students 1) develop new experimental setup and techniques in spectroscopy and lifetime measurements using relativistic or reaccelerated rare isotopes beams and 2) analyze data and interpret physics results from experiments. Students also work on hands-on projects to operate and improve the TRIPLEX device which is used for lifetime measurements based on Doppler-shift techniques. New detector projects developing radiation-hard diamond detectors and associated data acquisition system are underway. Depending on interest, students also participate in summer projects at various national laboratories to prepare for their future careers. Selected Publications Intruder dominance in the second 0+ state of state of 32 Mg studied with a novel technique for in-flight decays; R. Elder, H. Iwasaki, et al., Phys. Rev. C100, 041301(R), (2019). Enhanced Electric Dipole Strength for the Weakly Bound States in 27 Ne; C. Loelius, N. Kobayashi, H. Iwasaki, et al., Phys. Rev. Lett. 121, 262501 (2018). Lifetime Measurement and Triple Coexistence Band Structure in 43 S; T. Mijatovic’, N. Kobayashi, H. Iwasaki, et al., Phys. Rev. Lett. 121, 012501 (2018). Biography Before joining in MSU in 2009, I worked at various places in the world; University of Tokyo in Japan, IPN Orsay in France, and University of Cologne in Germany. All these places have accelerator-based facilities on campus, realizing the ideal combination of academic and research environment for scientists and students. In my research activities, I always like to work with early-career scientists (students and postdocs) because I can learn new ideas and views of science by interacting with them. At MSU, FRIB is providing world-class research and training opportunities, and I am looking forward to working with future scientists. 54 2022_FRIB_Graduate_Brochurev4.indd 54 10/29/2021 3:33:53 PM
Pete Knudsen Senior Cryogenic Process Engineer Keywords: Cryogenic Process Systems Cryogenic Engineering About • BS, Mechanical Engineering, Colorado State University, 1990 • MS, Mechanical Engineering, Fluid and Thermal Sciences, Old Dominion University, 2008 • PhD, Mechanical Engineering, Fluid and Thermal Sciences, Old Dominion University, 2016 • Joined the laboratory in Aug 2016 • knudsen@frib.msu.edu Research Cryogenic systems, used to cool superconducting devices close to a temperature of absolute zero, are complex thermal-hydraulic process systems comprised of many sub-systems and are very energy intensive by nature, requiring at least three orders of magnitude higher input power for the same cooling. These systems are highly specialized and often unique. The process cycles are complex, the sub-systems must operate in concert, and designs are inherently thermally and mechanically coupled and necessitate consideration of non-constant and non-ideal fluid behavior. The demands on the process equipment with respect to efficiency and reliability over the required operating temperature range are quite different than in commercial industry. These factors provide many opportunities for applied research and development. How Students can Contribute as Part of my Research Team We offer opportunities both separately and combined for theoretical and hands-on-hardware research on thermalhydraulic process equipment and systems. Our focus is well rounded, beginning with concept modeling and fundamental studies, followed by engineering design and analysis, then oversight of fabrication and installation, and finally, testing. Although all of these are difficult to squeeze into a dissertation or thesis, there is the opportunity for exposure to many of these aspects. Our goal is the development of new and improved cryogenic processes and equipment, which offer better efficiency, reliability, and flexibility. Selected Publications Equivalent isentropic expansion efficiency of real fluid subject to concurrent pressure drop and heat transfer, P. Knudsen, V. Ganni, IOP Conf. Ser.: Mater. Sci. Eng. 278 012059 (2018) Modifications to JLab 12 GeV refrigerator and wide range mix mode performance testing results, P. Knudsen, et al, IOP Conf. Ser.: Mater. Sci. Eng. 171 012015 (2017) Testing of a 4 K to 2 K heat exchanger with an intermediate pressure drop, P. Knudsen, V. Ganni, IOP Conf. Ser.: Mater. Sci. Eng. 101 012105 (2015) Biography My career began differently than a typical university faculty, starting as a Space Shuttle systems engineer, then moving on toward diverse system and equipment designs; such as multi-million dollar launch vehicle ground support fluid systems, the process design of large helium cryogenic refrigeration systems, and specialized test equipment such as a 2 kelvin helium heat exchanger. It is this background, typical in our group, which emphasizes both our motivation for theoretical and applied research to practical applications. 55 2022_FRIB_Graduate_Brochurev4.indd 55 10/29/2021 3:33:53 PM
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FACILITY FOR RARE ISOTOPE BEAMS GRA
Page 3 and 4: Contents Director’s welcome......
Page 5 and 6: Director’s welcome Why do atoms e
Page 7 and 8: A research associate and physicist
Page 9 and 10: FRIB features Unprecedented discove
Page 11 and 12: Other tools and resources • FRIB
Page 13 and 14: JINA-CEE Michigan State University
Page 15 and 16: ASET graduate student works with an
Page 17 and 18: What is cryogenic engineering? Cryo
Page 19 and 20: Accelerator physics Students in acc
Page 21 and 22: Fun and friendship The graduate stu
Page 23 and 24: Women and Minorities in the Physica
Page 25 and 26: FRIB laboratory graduates now occup
Page 27 and 28: Njema Frazier, PhD in Theoretical N
Page 29 and 30: Scott Suchyta PhD in Chemistry, 201
Page 31 and 32: Collaboration in the cleanroom. A g
Page 33 and 34: The Lansing area Capital city Lansi
Page 35 and 36: The campus The East Lansing campus
Page 37 and 38: 37 2022_FRIB_Graduate_Brochurev4.in
Page 39 and 40: Daniel Bazin Research Senior Physic
Page 41 and 42: Georg Bollen University Distinguish
Page 43 and 44: Edward Brown Professor of Physics K
Page 45 and 46: Kaitlin Cook Assistant Professor of
Page 47 and 48: Pawel Danielewicz Professor of Phys
Page 49 and 50: Venkatarao Ganni Director of the MS
Page 51 and 52: Yue Hao Associate Professor of Phys
Page 53: Morten Hjorth-Jensen Professor of P
Page 57 and 58: Steven Lidia Senior Physicist and A
Page 59 and 60: Steven Lund Professor of Physics Ke
Page 61 and 62: Kei Minamisono Research Senior Scie
Page 63 and 64: Fernando Montes Research Staff Phys
Page 65 and 66: Witek Nazarewicz University Disting
Page 67 and 68: Brian O’Shea Professor of Computa
Page 69 and 70: Scott Pratt Professor of Physics Ke
Page 71 and 72: Kenji Saito Professor of Physics Ke
Page 73 and 74: Gregory Severin Assistant Professor
Page 75 and 76: Jaideep Taggart Singh Associate Pro
Page 77 and 78: Andreas Stolz Professor, Operations
Page 79 and 80: Jie Wei Professor of Physics, FRIB
Page 81 and 82: Yoshishige Yamazaki Professor of Ph
Page 83 and 84: Vladimir Zelevinsky Professor of Ph
Page 85 and 86: How to Apply Now that you’ve read
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202 FRIB Graduate Brochure

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