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Events at Physics

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Events During the Week of December 6th through December 13th, 2020

Sunday, December 6th, 2020

Academic Calendar
All classes move to virtual format for the remainder of the semester
Time: 12:00 am
Place:
Abstract: *Note: actual end time may vary.*
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Monday, December 7th, 2020

Academic Calendar
All classes move to virtual format for the remainder of the semester
Time: 12:00 am
Place:
Abstract: *Note: actual end time may vary.*
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Plasma Physics (Physics/ECE/NE 922) Seminar
Demonstration of helium exhaust enhancement during resonant magnetic perturbation (RMP) field application at DIII-D
Time: 12:00 pm
Place: Zoom Meeting
Speaker: Edward Hinson, UW Engineering Physics department
Abstract: It is shown for the first time in a diverted tokamak that
key metrics for continuous fusion, effective helium particle
confinement time, 𝛕_p*He, and its ratio with energy confinement,
𝛕_p*He/𝛕_E, were reduced by a factor of 2-3 during suppression of
edge localized modes (ELMs) by resonant magnetic field perturbations
(RMPs) over the unperturbed ELMy case. Reduced 𝛕_p*He during RMP was
observed in the core, edge, and pump plenum, where higher helium
pressure and concentration were also found. Elevated ionized helium
line emission during ELM suppression, with a decay time matching
𝛕_p*He, was measured at the inner strike point, suggesting more
helium in the unconfined region. These observations suggest that
processes during application of RMPs better retain helium at the edge,
in excess of that expected from deuterium ‘pumpout,’ where it is
pumped more quickly. A multi-reservoir model, derived from a finite
volume approximation of the continuity equation with diffusive and
convective transport, fits the helium time evolution at each of the
above-mentioned measurements well. Transport parameters obtained from
these fits indicate the data are consistent with strongly increased
transport of helium in the separatrix region during RMP application,
although higher core transport is also found. These findings, which
were obtained in ITER-shaped plasmas, provide evidence that
application of RMP ELM suppression in future devices such as ITER may
be capable of matching or exceeding the helium impurity exhaust
produced by the ELM events themselves, thereby helping to avoid helium
ash buildup in a burning regime, and maintain high fusion gain.

Connection information:

Join Zoom Meeting
https://uwmadison.zoom.us/j/99156107574?pwd=RnA0ZnJHbDdlOHN1dkpFYUVYcWZpUT09

Meeting ID: 991 5610 7574
Passcode: 883688
Host: Paul Terry
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Tuesday, December 8th, 2020

Academic Calendar
All classes move to virtual format for the remainder of the semester
Time: 12:00 am
Place:
Abstract: *Note: actual end time may vary.*
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PGSC Professional Development Seminar
Okay, Google: Help Me with My Resume
Time: 2:30 pm
Place: https://uwmadison.zoom.us/j/97345770481
Speaker: Homer Wolfmeister, Google
Abstract: Crafting an attractive resume is a skill that takes practice to develop, but the process becomes much easier once you know what search committees are looking for. Sharing his experience screening Google applicants, Homer Wolfmeister will overview the components of a strong resume for typical industry careers. He will also outline the hiring process from initial screenings, to resume evaluation, to getting an interview. There will be time at the end for questions about any part of the hiring process.
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Network in Neutrinos, Nuclear Astrophysics, and Symmetries (N3AS) Seminar
Impact of Fast Flavor Oscillations on Neutrino-driven Winds
Time: 3:30 pm
Place: https://berkeley.zoom.us/j/91922781599
Speaker: Andre Sieverding , University of Minnesota
Host: Baha Balantekin
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Council Meeting
Time: 4:00 pm
Place: Virtual
Speaker: Sridhara Dasu, UW-Madison
Host: Sridhara Dasu, Department Chair
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WARF Innovation Awards
Time: 4:00 pm
Place: sign up to receive the webinar link: https://www.warf.org/event/stories-of-innovation-what-happens-a
Speaker: Cary Forest, UW–Madison Physics
Abstract: Each fall the WARF Innovation Awards recognize some of the best of inventions at UW-Madison. WARF receives hundreds of new invention disclosures each year. Of these disclosures, six were selected as finalists for the WARF Innovation Awards. This year's finalists include:

High-Energy Plasma Generator for Medical Isotope Production, Nuclear Waste Disposal & Power Generation

Cary Forest (Physics)
Jay Anderson (Physics)
John Wallace (Physics)
Robert Harvey (CompX)
Yuri Petrov (CompX)

See more about the awards and watch videos of the six finalists' projects at: https://www.warf.org/invent/warf-innovation-awards/
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Wednesday, December 9th, 2020

Academic Calendar
All classes move to virtual format for the remainder of the semester
Time: 12:00 am
Place:
Abstract: *Note: actual end time may vary.*
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Department Meeting
Time: 12:15 pm
Place: Virtual see "abstract" for connection info
Speaker: Sridhara Dasu, Department Chair, UW-Madison
Meeting Coordinates: Meeting number: 120 392 9242 Password: Q5EjaTz3Pk3 (75352893 from phones) https://uwmadison.webex.com/uwmadison/j.php?MTID=m4be4e8a6254fdcd033b6c946ffeee6c8 Join by video system Dial 1203929242@uwmadison.webex.com You can also dial 173.243.2.68 and enter your meeting number. Join by phone +1-415-655-0001 US Toll +1-312-535-8110 United States Toll (Chicago) Access code: 120 392 9242
Host: Sridhara Dasu, Department Chair
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Thursday, December 10th, 2020

Academic Calendar
Last day of instruction
Time: 12:00 am
Place:
Abstract: *Note: actual end time may vary.*
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Academic Calendar
All classes move to virtual format for the remainder of the semester
Time: 12:00 am
Place:
Abstract: *Note: actual end time may vary.*
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Cosmology Journal Club
Time: 12:00 pm
Place:
Abstract: Cosmology Journal Club is back! We will be having virtual meetings this semester.

Each week, we start with a couple scheduled 15 minute talks about one's research, or an arXiv paper. The last 30 minutes will typically be open to the group for anyone to discuss an arXiv paper.

All are welcome and all fields of cosmology are appropriate.

Contact Ross Cawthon, cawthon@wisc, for more information.
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NPAC (Nuclear/Particle/Astro/Cosmo) Forum
Muon Collider Explorations
Time: 1:00 pm
Place: https://uwmadison.zoom.us/j/95522667515?pwd=a1dQaXoyakVPQkZVTm44VCtHNVE1UT09
Speaker: Sarah Demers, Vladimir Shiltsev, Tao Han, Simone Pagan Griso, US HEP Community
Abstract: Workshop
Host: Sridhara Dasu
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Astronomy Colloquium
Multi-messenger Astrophysics: Probing Compact Objects with Cosmic Particles
Time: 3:30 pm
Place: Zoom meeting(see Abstract ) Coffee and tea 3:30pm, Talk 3:45 PM
Speaker: Ke Fang, UW Astronomy Department
Abstract: The study of compact objects such as black holes and neutron stars is an important component of modern astrophysics. Recent detections of astrophysical neutrinos, gamma-rays, ultrahigh energy cosmic rays, and gravitational waves open up opportunities to study compact objects with multi-messengers. In this talk, we first review the latest progress in Astroparticle Physics, including some surprising puzzles revealed by new observations. We demonstrate that the key to Multi-messenger Astrophysics is to understand and establish the link between the messengers. We then illustrate how to reach this goal from both theoretical and observational perspectives. From the theoretical side, we show that high-energy particle propagation in the vicinity of compact objects may play an important role in connecting multi-wavelength observation and source physics. From the observational side, we investigate analysis frameworks aiming to exploit data across multiple wavelengths and messengers.

Zoom URL: https://us02web.zoom.us/j/88513896776?pwd=Y1JtRE1KZllxWkFTamJBSGtGdm9yQT09

Meeting ID: 885 1389 6776
Passcode: 713070
Host: Professor Ellen Zweibel
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Friday, December 11th, 2020

Academic Calendar
Study day
Time: 12:00 am
Place:
Abstract: *Note: actual end time may vary.*
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Theory Seminar (High Energy/Cosmology)
Title to be announced
Time: 2:00 pm
Place: For zoom link, sign up at: https://groups.google.com/a/g-groups.wisc.edu/d/forum/theoryseminars/join
Speaker: Sungwoo Hong, Cornell University
Host: Lars Aalsma
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Department Coffee Hour
Time: 3:30 pm
Place: https://cern.zoom.us/j/98625439661?pwd=NmNMeit4aGNLOSs3eHl0RHk0ZHRKUT09
Abstract: Join us weekly for an informal virtual coffee hour! Catch up with others in the department, tell us how things are going, and impress everyone with your Zoom background skills. Coffee Hour is open to any and all faculty, staff, and students in the department. Sometimes we have a topic, and we'll try to get that topic posted here in advance or sent out by email before each coffee hour.
Host: Department
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Saturday, December 12th, 2020

Academic Calendar
Summary period (exams)
Time: 12:00 am
Place:
Abstract: *Note: actual end time may vary.*
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Sunday, December 13th, 2020

Academic Calendar
Summary period (exams)
Time: 12:00 am
Place:
Abstract: *Note: actual end time may vary.*
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Academic Calendar
Commencement
Time: 12:00 am
Place:
Abstract: *Note: actual end time may vary.*
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