2021FRIB/NSCL Graduate Brochure

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Kenji Saito Professor of Physics Accelerator Physics Selected Publications State-of-the-Art and Future Prospects in RF Superconductivity, K. Saito, 2012 International Particle Accelerator Conference (2012). Multi-wire Slicing of Large Grain Ingot Material, K. Saito et al., the 14th Workshop on RF Superconductivity 2009 (SRF2009). Gradient Yield Improvement Efforts for Single and Multi-Cells and Progress for Very High Gradient Cavities, K. Saito, the 13rd Workshop on RF Superconductivity 2007 (SRF2007). Theological Critical Field in RF Application, K. Saito, the 11th Workshop on RF Superconductivity SRF2003 (2003). Superiority of Electropolishing over Chemical Polishing on High Gradients, K. Saito et al., The 8th Workshop on RF Superconductivity (1997). BS, Mathematics and Physics, Ritsumeikan University, 1977 PhD, Nuclear Physics, Tohoku University, Japan, 1983 Joined NSCL in April 2012 saito@frib.msu.edu Accelerator is the base tool for nuclear physics, high energy physics, light sources, medical applications, and so on. Superconducting Radio Frequency (SRF) Systems are an application of microwave acceleration for ion beams. The principle is the same as normal conducting RF system, but SRF systems use superconducting technology, which allows high quality beam acceleration with very high efficiency. It is a key technology for current world-wide accelerator projects for nuclear science and high energy physics. SRF systems are a state-of-the art technology to open new areas of particle physics. The FRIB project at MSU utilizes this system for a major part of the accelerator. I joined the NSCL graduate school education program servicing the FRIB SRF development manager since 2012. The main part of a SRF system is the so-called cryomodule and RF system. A cryomodule consists of a cryostat and SRF cavities included therein. Ionized beam is accelerated by SRF cavities, which is made of superconducting material and cooled by liquid helium at below 4.2K. A cryostat is a kind of Thermos bottle to keep SRF cavities at such a low temperature. Niobium material has been utilized for SR cavities, which has high quality superconducting features: higher superconducting transition temperature Tc=9.25K and higher thermodynamic critical field Hc=200mT. Niobium has a good forming performance to fabricate cavities. Development of high quality niobium is always a concern and I have been working on high purity niobium material. My latest concern is single crystalline niobium ingot or other new materials. In RF cavity design it is very important to have an excellent SC cavity performance, which has to be simulated intensively by specific computing cords. I have developed a high gradient SRF cavity shape with an acceleration gradient > 50MV/m and demonstrated the high performance, which is world recorded so far. This activity will applied other new SRF systems. SR cavity performance subjects to very shallow surface characteristics where RF surface current flows. Particle/ defect free clean surface is especially crucial. Chemical clean surface preparation and clean assembly technology are key technologies. I have developed electropolishing method for elliptical shaped SRF cavity and confirmed it is the best process for high gradient cavities. This technology will be applied to low beta cavities and push the gradient in order to make SRF system more compact. Cryostat design includes lots of engineering and material issues. We are investing a lot on this subject in ongoing FRIB cryomodule. The RF system is another exciting place to study. Concerning SRF, high power coupler is an important issue to develop. The design of multipacting free high power coupler structure and cleaning technology, TiN coating technologies, would make for a great theme for a thesis. Thus SRF systems cover various sciences and super-technologies: electromagnetic dynamics, superconducting material science, plastic forming technology, ultra-clean technology, ultra-high vacuum, cryogenics, RF technology, mechanical/electric engineer. SR system is an exciting place to study. Any students from physics, chemistry, materials, and mechanical/electric engineering are welcome to this project. KEYWORDS Superconducting Radio Frequency System High Purity Niobium Material | SRF Cavity Processing Cavity and Cryostat Design for FRIB Cryomodule 54
Hendrik Schatz University Distinguished Professor of Physics JINA-CEE Department Head Experimental Nuclear Astrophysics MS, Physics, University of Karlsruhe, 1993 PhD, Physics, University of Heidelberg, 1997 Joined NSCL in December 1999 schatz@nscl.msu.edu Selected Publications Reaction Rate Sensitivity of the Production of γ-ray Emitting Isotopes in Core- Collapse Supernova, K. Hermansen et al., arXiv:2006.16181 Status of the JENSA gas-jet target for experiments with rare isotope beams, K. Schmidt et al., Nuclear Inst. and Methods in Physics Research, A, Volume 911, p. 1-9 (2018) Constraining the Neutron Star Compactness: Extraction of the 23 Al (p,γ) Reaction Rate for the r p Process, C. Wolf et al., Phys. Rev. Lett. 122, 2701 (2019). A recoil separator for nuclear astrophysics SECAR, G.P.A. Berg et al., Nuclear Inst. and Methods in Physics Research, B, Volume 376, p. 165-167 (2016) The goal of our experimental and theoretical research program is to understand the nuclear processes that shape the cosmos. To that end, we take advantage of the capabilities of NSCL, FRIB, and other laboratories to produce the same exotic isotopes that are created in extreme astrophysical environments such as supernovae, hydrogen explosions on neutron stars and white dwarfs, or the crusts of neutron stars. By measuring the properties of these very short lived isotopes we can address questions such as: What is the origin of the heavy elements in nature? What role do neutron star mergers and supernovae play? What powers the frequently observed x-ray bursts and what do observations tell us about neutron stars? What are the processes in the crusts of neutron stars that convert ordinary nuclei into exotic isotopes? Why do these processes generate not enough heat to explain observations? We address these questions by carrying out different types of experiments using a broad range of detector systems and beam energies to restage astrophysical processes in the laboratory. These include decay station systems for beta and neutron detection, the GRETA/GRETINA and SuN gamma-ray detectors, the S800 spectrometer, the HABANERO neutron detector, the JENSA gas jet target, and the SECAR recoil separator developed in our group. We are particularly excited about the opportunities at FRIB for which the field (and us) have waited for a long time and that promise to address many astrophysical questions. Instruments like SECAR will enable us to measure directly the nuclear reactions occurring inside stars. Our group emphasizes a flexible and comprehensive approach to research that is driven by the goal to understand a specific open question and cuts across disciplines and boundaries between theory and experiment. Therefore students have opportunities for major experimental equipment development, use of a broad range of existing equipment, data analysis, KEYWORDS Nuclear Astrophysics | Recoil Separator | Gas Target Neutron Detectors | Neutron Stars | r-process converting results in astrophysically usable data, carrying out astrophysical model calculations, and comparing results to observations. While there is a lot of flexibility to follow individual interests most students will get involved in several (or even all) of these aspects during their PhD work. To that end, our group has a number of astrophysical model codes available, works closely with the MSU astronomy group, and is part of the Joint Institute for Nuclear Astrophysics (JINA) and the international research network IReNA that collaboratively connect our group with a broad range of other experimentalists, theorists, astrophysical modelers, and observers across the world. JINA and IReNA provide national and international networking opportunities, including opportunities for research stays and exchanges (for example to work on a particular interpretation of experimental results), visits, and for becoming part of a broader community of students from different institutions, fields, and countries. Our goal is to create an environment where all students can be successful, can follow their interests, and get prepared for a broad range of careers in industry, national laboratories, academia, or nuclear astrophysics. We fully support and follow the NSCL and Physics Department code of conduct, as well as the newly developed JINA-CEE code of conduct. I encourage prospective students to directly contact any group members, or myself with any questions. The easiest way to get a hold of me is via e-mail. Artist’s view of a neutron star that accretes matter from a companion. 55
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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 and 36: Venkatarao Ganni Director of the MS
Page 37 and 38: Yue Hao Associate Professor of Phys
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: Ryan Ringle Research Senior Physici
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
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2021FRIB/NSCL Graduate Brochure

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