eHEP Seminars and Events Past Events 2022 / 12
16
Dec
2022
1 p.m.
- 2 p.m.
MP 1115
Mervyn Chan
GWSkyNet: a low latency annotation pipeline for the identification of gravitational wave candidates for the next observing run
The accurate and rapid identification of gravitational wave candidates is crucial for follow-up observations of electromagnetic emissions. In run O3, the LIGO/Virgo collaboration released 80 Open Public Alerts. However, the rates of retractions and false alarms point to the need for a complementary model that predicts the nature and origin of OPAs in low latency. I will discuss GWSkyNet, a machine-learning algorithm capable of discerning between signals of astrophysical and terrestrial origin.
02
Dec
2022
1 p.m.
- 2 p.m.
MP 1115
Ryan Snodgrass
Operating principles and performance of a miniature, cold-cycle dilution refrigerator when tilted
Miniature, cold-cycle dilution refrigerators (DRs) are being explored as an alternative to adiabatic demagnetization refrigerators for the cooling of sensors aboard astrophysics balloon missions. In this talk, the design, function, and testing of a miniature, cold-cycle DR manufactured by Chase Cryogenics will be discussed. I will also briefly discuss our research on pulse tube refrigerators, which is part of an effort at NIST to minimize the size and infrastructure requirements of cryostats.