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DTSTAMP:20250401T073847
DTSTART;TZID=America/Detroit:20250409T150000
DTEND;TZID=America/Detroit:20250409T160000
SUMMARY:Workshop / Seminar:Department Colloquium | Hunting for Ghosts with Rare Isotope Doped Advanced Sensors
DESCRIPTION:Nuclear beta and electron capture (EC) decay serve as sensitive probes of the structure and symmetries at the microscopic scale of our Universe. As such\, precision measurements of the final-state products in these processes can be used as powerful laboratories to search for new physics from the meV to TeV scale\, as well as addressing fundamental questions of quantum mechanics at the subatomic scale. Significant advances in “rare isotope” availability and quality\, coupled with decades of sensing technique development from the AMO community have led us into a new era of fundamental tests of nature using unstable nuclei. For the past few years\, we have taken the approach of embedding radioisotopes in thin-film superconducting tunnel junctions (STJs) to precisely measure the recoiling atom that gets an eV-scale “kick” from the neutrino following EC decay. These recoils are encoded with the fundamental quantum information of the neutrino and decay process\, as well as carrying unique signatures of weakly coupled beyond standard model (BSM) physics\; including neutrino mass\, exotic weak currents\, and potential “dark” particles created within the energy-window of the decay. These measurements provide a complimentary and (crucially) model-independent portal to the dark sector with sensitivities that push towards synergy between laboratory and cosmological probes. In this talk\, I will discuss the broad program we have developed to provide leading limits in these areas as well as the technological advances across several sub-disciplines of science required to enable this work\, including subatomic physics\, quantum engineering\, atomic theory\, and materials science. Finally\, I will discuss future prospects of extending this work using macroscopic amounts of harvested exotic atoms from the Facility for Rare Isotope Beams (FRIB) in optically levitated nanospheres for direct momentum measurements of the decay recoils.
UID:134545-21874474@events.umich.edu
URL:https://events.umich.edu/event/134545
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Science,Physics
LOCATION:West Hall - 340
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20250416T153949
DTSTART;TZID=America/Detroit:20250409T150000
DTEND;TZID=America/Detroit:20250409T160000
SUMMARY:Social / Informal Gathering:IOE Coffee Chats
DESCRIPTION:Join the Institute for Operations Research and the Management Sciences (INFORMS) and the Human Factors and Ergonomics Society (HFES) student orgs for coffee and conversation every Wednesday from 3-4 p.m. in the IOE Community Suite.
UID:133245-21872642@events.umich.edu
URL:https://events.umich.edu/event/133245
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Michigan Engineering,North campus,Industrial And Operations Engineering,Human Factors And Ergonomics Society,Hfes,Graduate Students,Ergonomics,Food,Free,Graduate,Graduate and Professional Students
LOCATION:Industrial and Operations Engineering Building - Community Suite
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20250116T115602
DTSTART;TZID=America/Detroit:20250409T150000
DTEND;TZID=America/Detroit:20250409T160000
SUMMARY:Recreational / Games:Schokoladenstunde
DESCRIPTION:Convenes on Wednesdays\, 3-4 p.m. in 3110 MLB. There will be some German chocolate to snack on. Silvia Grzeskowiak (sgrzesko@umich.edu) will bring games\, and the hour will be spent chatting and playing games in German (e.g. Tabu.)
UID:131292-21868133@events.umich.edu
URL:https://events.umich.edu/event/131292
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Germanic Languages And Literatures,German Studies,German,Games
LOCATION:Modern Languages Building - 3110
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20250407T100702
DTSTART;TZID=America/Detroit:20250409T150000
DTEND;TZID=America/Detroit:20250409T160000
SUMMARY:Workshop / Seminar:Student Number Theory: The Fontaine-Wintenberger theorem
DESCRIPTION:Abstract: Let K be a perfectoid field of mixed characteristic (0\, p). Then\, one can form the tilt K^♭ of K\, which is a perfectoid field of characteristic p. The Fontaine-Wintenberger theorem says that the absolute Galois group of K and the absolute Galois group of K^♭ are isomorphic. In this talk\, we will define the tilting functor and construct its inverse using the Witt vectors. Then\, we will see a more conceptual proof using the almost purity theorem. This proof also motivated Scholze to define perfectoid algebras.
UID:134754-21874876@events.umich.edu
URL:https://events.umich.edu/event/134754
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 3088
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20250409T142032
DTSTART;TZID=America/Detroit:20250409T150000
DTEND;TZID=America/Detroit:20250409T160000
SUMMARY:Workshop / Seminar:Zumba Through Wellness Wednesday
DESCRIPTION:Rackham Student Government welcomes you to a couple hours of wellness and community bonding with fellow graduate students!Sign up for a FREE 50-minute Zumba session at NCRB!
UID:133847-21873616@events.umich.edu
URL:https://events.umich.edu/event/133847
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Sessions
LOCATION:NCRB
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20250108T095323
DTSTART;TZID=America/Detroit:20250409T151000
DTEND;TZID=America/Detroit:20250409T161000
SUMMARY:Lecture / Discussion:MIPSE Seminar | RF Plasma Cathodes and Other Research Activities in the Plasma Propulsion Group at NRL
DESCRIPTION:Abstract:\nThis talk discusses recent work on RF plasma cathodes\, propellant agnostic electron sources for electric propulsion systems that enable new deep space exploration mission architectures such as in-situ resource utilization. We develop the fundamental theory for these devices and demonstrate its effectiveness at determining I-V characteristics and performance. From our measurements and model\, we project thruster performance and discuss the consequences for space exploration. Then we dive into non-ideal behavior that can be exhibited in these cathodes including sheath expansion and mode transitions. The remainder of the discussion will overview other plasma-related research activities in the NRL propulsion group.\n\nAbout the Speaker: \nDr. Marcel Georgin is an Aerospace Engineer at the Naval Research Laboratory in Washington\, D.C. He earned his bachelor’s degree in physics from McGill University in Montreal\, Canada\, and his Ph.D. in applied physics from the University of Michigan where he studied plasma instabilities in electron sources for electric propulsion systems. His research interests are at the intersection of plasma physics and engineering\, with a strong focus on space propulsion. He is currently working on a variety of plasma-related topics\, including propellant agnostic electron sources\, hypersonics environmental simulation\, advanced thermionic cathodes\, and more.\n\nThe seminar will be conducted in person and simulcast via Zoom: https://mipse.umich.edu/seminars_2425.php#winter2025
UID:130711-21866562@events.umich.edu
URL:https://events.umich.edu/event/130711
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Talk,seminar,Propulsion,Plasma,Physics,Michigan Engineering,In Person
LOCATION:Electrical Engineering and Computer Science Building - 1003
CONTACT:
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