Summary - Google Drive


1	Date	9/6/2024
2	Name	Diktys Stratakis
3	Affiliation	Fermilab
4	Home Page
5	Colloquium Title	TBA
6	Abstract	TBA
7	Host	Xueying Lu
8	Date	9/13/2024
9	Name	Michael Eads
10	Affiliation	Department of Physics, Northern Illinois University, DeKalb, IL 60115
11	Home Page
12	Colloquium Title	Constraining the Standard Model with Tau Neutrinos at DUNE
13	Abstract	TBD
14	Host	Michael Eads
15	Date	9/20/2024
16	Name	Roland Winkler
17	Affiliation	NIU Department of Physics
18	Home Page
19	Colloquium Title	Electric, magnetic and toroidal polarizations in crystals
20	Abstract	tba
21	Host	Larry Lurio
22	Date	9/27/2024
23	Name	Rachel Margraf-O'Neal
24	Affiliation	Argonne National Laboratory, Lemont, IL
25	Home Page
26	Colloquium Title	Progress towards Cavity-Based X-ray Free-Electron Lasers
27	Abstract	X-ray Free-Electron Laser (XFEL) facilities, like the LCLS at SLAC, provide 10s of femtosecond-length, Gigawatt-scale peak power X-ray pulses. These X-rays are useful as a probe for understanding fast and low-signal processes in materials science, biology, chemistry and physics. In an XFEL, electrons produce X-rays via synchrotron radiation in undulator magnets. The X-rays act back on the electron beam, causing it to microbunch at the X-ray wavelength, enabling exponential gain of X-ray power. In today’s single-pass SASE (self-amplified spontaneous emission) XFELs, where X-rays pass through the undulator line just once, the X-rays which initiate microbunching come from noise in the beam, producing X-rays which are transversely coherent, but longitudinally noisy. In proposed cavity-based XFELs (CBXFELs), by contrast, X-rays are returned by mirrors from the end of the undulator line to the beginning, seeding the FEL process on subsequent passes. Future X-ray light sources based on CBXFELs can thus produce longitudinally coherent pulses with improved spectral brightness, and promise to be more stable than current XFELs. This talk will give an overview of CBXFELs and show recent progress towards construction, including demonstration of a 14 meter hard X-ray cavity at LCLS.
28	Host	Gwanghui Ha
29	Date	10/4/2024
30	Name	TBA
31	Affiliation	Northern Illinois University
32	Home Page
33	Colloquium Title	Career Workshop
34	Abstract	TBA
35	Host	Vishnu Zutshi
36	Date	10/11/2024
37	Name	Manfred Wendt
38	Affiliation	CERN
39	Home Page
40	Colloquium Title	TBA
41	Abstract	TBA
42	Host	Oksana Chubenko
43	Date	10/18/2024
44	Name	Alexey Burov
45	Affiliation	Fermilab
46	Home Page
47	Colloquium Title	Space charge effects for beams in circular machines
48	Abstract	Coulomb fields of charged particle beams in circular machines determine, together with wake fields, modes of collective oscillations, for both transverse and longitudinal degrees of freedom. Several recently discovered effects in this area of research are going to be reported. We'll discuss how the space charge affects the Landau damping, which is the main stabilization mechanism for the collective modes. In particular, we'll talk about the recently discovered no-threshold loss of Landau damping in the longitudinal plane. Also, the new type of beam transverse instabilities, the convective ones, will be reported.
49	Host	Oksana Chubenko
50	Date	10/25/2024
51	Name	Akshay Murthy
52	Affiliation	Fermilab
53	Home Page	https://aamurthy.com/
54	Colloquium Title	Identifying and Mitigating Sources of Loss in Superconducting Qubits
55	Abstract	TBD
56	Host	Zhili Xiao
57	Date	11/1/2024
58	Name	Ievgen Lavrukhin
59	Affiliation	University of Michigan
60	Home Page
61	Colloquium Title	TBA
62	Abstract	TBA
63	Host	Oksana Chubenko
64	Date	11/8/2024
65	Name	Chapai
66	Affiliation	Argonne National Laboratory, 9700 S Cass Avenue Lemont, IL 60439 USA
67	Home Page	https://www.anl.gov/profile/ramakanta-chapai
68	Colloquium Title	Mysteries of Transport in Kagome Metals: The Impact of Electronic Correlations
69	Abstract	Metallic materials with a Kagome lattice have become a new frontier in Condensed Matter Physics. Their electronic band structure features Dirac points, van Hove singularities (VHS), and flat bands. In this talk, I will present some insightful cases of the Kagome superconductor CsV3Sb5 (CVS), where superconductivity, charge density wave (CDW), and non-trivial topology interplay. Magnetic quantum oscillations measured in fields up to 86 T reveal the fundamental ‘building blocks’ of the reconstructed Fermi surface: ‘hyperbolic hexagon’ and ‘triangular’ pockets in the CDW state of CVS. These pockets, characterized by sharp corners and strong Fermi velocity variations due to proximity to VHS, explain unconventional transport behaviors like non-monotonic magnetoresistance and apparent anomalous Hall effect. This approach extends to anomalous magneto-transport in other metallic systems with singular electronic features. As I conclude the talk, I will briefly discuss anomalous features observed in the temperature dependence of upper critical field Hc2(T) of CVS and propose an explanation based on Fermi surface reconstruction.
70	Host	Zhili Xiao
71	Date	11/15/2024
72	Name	Steven J. Sibener
73	Affiliation	The University of Chicago
74	Home Page	https://chemistry.uchicago.edu/faculty/steven-sibener
75	Colloquium Title	TBA
76	Abstract	TBA
77	Host	Oksana Chubenko
78	Date	11/22/2024
79	Name	Rodolfo Capdevilla
80	Affiliation	Fermilab
81	Home Page	https://inspirehep.net/authors/1275234
82	Colloquium Title	Physics Prospects for the Muon Collider Program
83	Abstract	The discovery of the Higgs boson and the multiple measurements confirming the predictions of the Standard Model (SM) validate a successful ongoing program at the Large Hadron Collider (LHC). Some important tasks for future colliders include i) to measure the Higgs properties to disentangle the microscopic nature of the electroweak symmetry-breaking mechanism, and ii) to look for new particles beyond the reach of the LHC. The physics program of the Muon Collider (MuC) promises both high-precision Higgs measurements as well as explorations at the 10 TeV parton center-of-momentum (CoM) energies. In this talk I review the status of the physics program at the MuC, with emphasis on the Higgs and on searches for the highly motivated dark matter candidates known as Minimal Dark Matter models.
84	Host	Steve Martin
85	Date	12/6/2024
86	Name	Senior Capstone
87	Affiliation	Northern Illinois University
88	Home Page
89	Colloquium Title	Student Presentations
90	Abstract	TBA
91	Host	Omar Chmaissem