{ "132866-21871976": { "datetime_modified":"20250218T085541", "datetime_start":"20250228T130000", "datetime_end":"20250301T030000", "has_end_time":1, "date_start":"2025-02-28", "date_end":"2025-03-01", "time_start":"13:00:00", "time_end":"03:00:00", "time_zone":"America\/Detroit", "event_title":"Characterization of Momentum and Heat Flow in Hall Thrusters with Laser Scattering", "occurrence_title":"", "combined_title":"Characterization of Momentum and Heat Flow in Hall Thrusters with Laser Scattering: Parker Roberts", "event_subtitle":"Parker Roberts", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"Hall thrusters are plasma accelerators which produce thrust with a low-temperature, \ud835\udc38\ud835\udc38\u00d7\ud835\udc35\ud835\udc35 plasma ring. Due to their high performance, they have become the most widely flown form of in-space propulsion. However, our ability to predict Hall thruster operation and life with simulations is limited by difficulties in modeling the \u201canomalous\u201d loss of electron confinement due to plasma turbulence. This anomalous transport of electrons limits efficiency and determines the electric field profile, impacting nearly every aspect of the thruster. Past attempts to measure the anomalous transport have used perturbative plasma probes which alter the thruster operation, and model-based inference studies do not produce a unique solution.\r\n\r\nIn this work, laser scattering experiments are performed to non-perturbatively characterize the flow of momentum and heat through the Hall thruster plasma. Laser-induced fluorescence (LIF) velocimetry is employed to capture the electric field, while incoherent Thomson scattering (ITS) is used to directly measure the electron properties in a high-power, magnetically shielded Hall thruster. A method is devised to infer the cross-field transport, represented by the effective Hall parameter, directly from these laser measurements. The electron properties are investigated across a parametric map of operating conditions and propellants in one and two dimensions. It is found that electron temperatures are larger than previously expected and the principle of isothermal field lines does not hold. The resulting dataset is used to evaluate theories for turbulent forces and heat fluxes in the Hall thruster and hollow cathode plumes.", "occurrence_notes":"In-person: 1180 Duderstadt Center Rm 1180", "guid":"132866-21871976@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/132866", "building_id":"null", "building_name":"Off Campus Location", "campus_maps_id":"1", "room":"", "location_name":"Virtual", "has_livestream":1, "livestream_type":"other", "livetream_require_login":0, "livestream_id":"", "livestream_link":"https:\/\/umich.zoom.us\/j\/93005556637", "cost":"", "tags":["#michiganengineering"], "website":"http:\/\/aero.engin.umich.edu", "sponsors":[ { "group_name":"Aerospace Engineering", "group_id":"3245", "website":"http:\/\/aero.engin.umich.edu" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/02\/event_132866_original-1.jpeg" }, "occurrence_count":1, "first_occurrence":21871976 } , "131848-21869315": { "datetime_modified":"20250303T063152", "datetime_start":"20250228T130000", "datetime_end":"20250228T150000", "has_end_time":1, "date_start":"2025-02-28", "date_end":"2025-02-28", "time_start":"13:00:00", "time_end":"15:00:00", "time_zone":"America\/Detroit", "event_title":"Disney Television Animation - Early Career Event: Drawn to Success2025 (February 28)", "occurrence_title":"", "combined_title":"Disney Television Animation - Early Career Event: Drawn to Success2025 (February 28)", "event_subtitle":"", "event_type":"Careers \/ Jobs", "event_type_id":"2", "description":"We are so excited to officially invite you to the Disney Television Animation: 2025 Early Career Event: Drawn To Success!  Learn all about what it's like to work at Disney TVA and how to draw attention of recruiters and creative leaders. Eachevent will cover the following topics:\u2022 Disney TVA Animation 40-year legacy of storytelling & Pipeline\u2022 Resume & Portfolio Tips\u2022 Interview Tips\u2022 Internship Opportunities\u2022 Meet the Artist Recruiting team\u2022 Hear and learn from Disney TVA guest speakers\u2022 and so much more! PLUS for the first time, we have curated our guest speakers for each session! Our Thursday, February 13th session will focus on early career primarily inanimation production and our Friday, February 28th session will focus onlearning from creative leaders. There are two separate dates you can sign up to attend virtually, please sign up for the time that works best for you. This event is open to anyone interested in learning about how to enter the animation industry.RSVP HERE-> https:\/\/forms.office.com\/r\/b1U73HWzmf Zoom link will be shared with RSVP list closer to the event date, starting 7 days before the first session. Please double check the email you share, since that is how you will receive the Zoom link.", "occurrence_notes":null, "guid":"131848-21869315@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/131848", "building_id":"", "building_name":"", "campus_maps_id":"", "room":"", "location_name":"", "has_livestream":0, "cost":"", "tags":[], "website":"", "sponsors":[ { "group_name":"University Career Center UCC", "group_id":"1140", "website":"http:\/\/careercenter.umich.edu" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":1, "first_occurrence":21869315 } , "131293-21868141": { "datetime_modified":"20250131T084503", "datetime_start":"20250228T130000", "datetime_end":"20250228T140000", "has_end_time":1, "date_start":"2025-02-28", "date_end":"2025-02-28", "time_start":"13:00:00", "time_end":"14:00:00", "time_zone":"America\/Detroit", "event_title":"Kreativwerkstatt", "occurrence_title":"", "combined_title":"Kreativwerkstatt", "event_subtitle":"", "event_type":"Social \/ Informal Gathering", "event_type_id":"19", "description":"Chat in German and express yourself creatively. Crafting, coloring, painting, drawing, knitting, sewing, crochet, embroidery, origami? You will combine speaking German, any level welcome, beginners included, and creatively expressing yourself. You are encouraged to bring your own materials or (ongoing) projects, but we will also provide some materials and prompts each week. Contact Laura Okkema (lokkema@umich.edu) or Iris Zapf-Garcia (iriszaga@umich.edu.) with questions.", "occurrence_notes":null, "guid":"131293-21868141@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/131293", "building_id":"1000207", "building_name":"Modern Languages Building", "campus_maps_id":"111", "room":"3030", "location_name":"Modern Languages Building", "has_livestream":0, "cost":"", "tags":["German Studies","Germanic Languages And Literatures","German"], "website":"", "sponsors":[ { "group_name":"Germanic Languages & Literatures", "group_id":"3621", "website":"http:\/\/www.facebook.com\/umichGerman\/" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/01\/event_131293_original-1.jpg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2025\/01\/event_131293_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/01\/event_131293_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/01\/event_131293_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/01\/event_131293_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2025\/01\/event_131293_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2025\/01\/event_131293_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2025\/01\/event_131293_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2025\/01\/event_131293_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2025\/01\/event_131293_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2025\/01\/event_131293_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/01\/event_131293_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/01\/event_131293_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2025\/01\/event_131293_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2025\/01\/event_131293_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/01\/event_131293_original-1.jpg" }, "occurrence_count":13, "first_occurrence":21868135 } , "131898-21869366": { "datetime_modified":"20250127T085902", "datetime_start":"20250228T130000", "datetime_end":"20250228T140000", "has_end_time":1, "date_start":"2025-02-28", "date_end":"2025-02-28", "time_start":"13:00:00", "time_end":"14:00:00", "time_zone":"America\/Detroit", "event_title":"PhonDi", "occurrence_title":"", "combined_title":"PhonDi: Discussion Group", "event_subtitle":"Discussion Group", "event_type":"Meeting", "event_type_id":"14", "description":"Phondi is a discussion and research group for students and faculty at U-M and nearby universities who have interests in phonetics and phonology. We meet roughly biweekly during the academic year to present our research, discuss \"hot\" topics in the field, and practice upcoming conference or other presentations. We welcome anyone with interests in phonetics and phonology to join us.", "occurrence_notes":null, "guid":"131898-21869366@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/131898", "building_id":"null", "building_name":"Off Campus Location", "campus_maps_id":"1", "room":"Lorch 473", "location_name":"Hybrid", "has_livestream":1, "livestream_type":"zoom", "livetream_require_login":0, "livestream_id":"97333497939", "livestream_password":"phondi", "livestream_link":"https:\/\/umich.zoom.us\/j\/97333497939", "cost":"", "tags":["Discussion Group","Phonetics","Phonology"], "website":"https:\/\/docs.google.com\/spreadsheets\/d\/1Ipn6Lp3stRF_54PajFyL09fMw2VERbIvpFomqGbaH4w\/edit?usp=sharing", "sponsors":[ { "group_name":"Department of Linguistics", "group_id":"3480", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/01\/event_131898_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2025\/01\/event_131898_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/01\/event_131898_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/01\/event_131898_original-1.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/01\/event_131898_original-1.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2025\/01\/event_131898_original-1.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2025\/01\/event_131898_original-1.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2025\/01\/event_131898_original-1.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2025\/01\/event_131898_original-1.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2025\/01\/event_131898_original-1.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2025\/01\/event_131898_original-1.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/01\/event_131898_original-1.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/01\/event_131898_original-1.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2025\/01\/event_131898_original-1.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2025\/01\/event_131898_original-1.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/01\/event_131898_original-1.png" }, "occurrence_count":7, "first_occurrence":21869363 } , "133004-21872244": { "datetime_modified":"20250221T113425", "datetime_start":"20250228T130000", "datetime_end":"20250228T150000", "has_end_time":1, "date_start":"2025-02-28", "date_end":"2025-02-28", "time_start":"13:00:00", "time_end":"15:00:00", "time_zone":"America\/Detroit", "event_title":"The Black History 101 Mobile Museum with Dr. Khalid el-Hakim", "occurrence_title":"", "combined_title":"The Black History 101 Mobile Museum with Dr. Khalid el-Hakim", "event_subtitle":"", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"We invite you to experience The Black History 101 Mobile Museum traveling exhibit along with a presentation from founder Khalid el-Hakim. Learn about the rich and diverse history of African Americans through original artifacts that span from the painful era of the trans-Atlantic slave trade to the vibrant culture of hip hop. 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