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DTSTART;TZID=UTC:20260528T160000
DTEND;TZID=UTC:20260528T170000
DTSTAMP:20260630T185458
CREATED:20260518T184645Z
LAST-MODIFIED:20260518T184645Z
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SUMMARY:Speaker: Chelsea Bartram (Stanford) - Title: Dialing into the Dark Matter with Novel Quantum Techniques
DESCRIPTION:Research Progress Meeting \nDate: May 28\, 2026 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Chelsea Bartram (Stanford) \nTitle: Dialing into the Dark Matter with Novel Quantum Techniques \nAbstract: The QCD axion is a well-motivated dark matter candidate that could solve the strong CP problem. The axion haloscope\, which leverages the inverse Primakoff effect\, renders the QCD axion ‘visible’ — if it exists. Still\, finding the QCD axion is no trivial matter. The QCD axion could span up to 13 orders of magnitude in mass space. Searches at higher masses suffer from the problem of scaling the detectors to smaller volumes\, and thus\, smaller signal powers. Searches at lower masses suffer from the need to achieve sensitivity to much smaller axion-photon couplings. I will discuss major efforts to cover the axion parameter space\, including the Axion Dark Matter eXperiment (ADMX) and DMRadio searches. Further\, I will explain some proposed enabling technologies for accelerated searches. It is clear new direct detection techniques are needed to cover such an expansive parameter space. In this talk\, I present a novel technique for improved impedance matching to wave-like dark matter. It is known that an RLC resonator is well-suited to axion direct detection. We propose an alternative circuit that replaces the capacitance with a ‘negative inductance’ to cancel reactance over a wider range of frequencies. Using the unique properties of a Josephson junction\, we show that we can achieve broadband reactance cancellation via simulation. I will discuss our preliminary understanding of the stability and operation of the circuit. To our knowledge\, this circuit represents the first implementation of a Josephson junction in a non-Foster circuit\, which uses an active component to evade the Bode-Fano limits on the bandwidth of a match. The Josephson junction must be operated in a cryogenic environment; thus\, its implementation in a non-Foster circuit is well-suited for axion searches that require low physical temperatures. \nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09 \nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-chelsea-bartram-stanford-title-dialing-into-the-dark-matter-with-novel-quantum-techniques/
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BEGIN:VEVENT
DTSTART;TZID=UTC:20260716T160000
DTEND;TZID=UTC:20260716T170000
DTSTAMP:20260630T185458
CREATED:20260630T184819Z
LAST-MODIFIED:20260630T184819Z
UID:3148-1784217600-1784221200@rpm.physics.lbl.gov
SUMMARY:Speaker: Marina Artuso (Syracuse) - Title: LHCb at the frontier of flavor physics: the three movements of the flavor sonata
DESCRIPTION:Research Progress Meeting \nDate: July 16\, 2026 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Marina Artuso (Syracuse) \nTitle: LHCb at the frontier of flavor physics: the three movements of the flavor sonata \nAbstract: The LHCb experiment is the first experiment designed to study interesting decays of the b and c quarks at a hadron machine. Currently it is taking data in its “Upgrade I” design and has successfully demonstrated the capabilities of the innovative software trigger\, that allows to enhance the physics reach beyond the prospects offered by an increase in luminosity. The data set from its first data taking cycle is still being exploited\, while many physics results from the upgraded detectors are under way. In addition\, an ambitious upgrade is planned for operation at the HL-LHC. Highlights from the recent physics results\, immediate prospects and upgrade plans will be presented. \nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09 \nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-marina-artuso-syracuse-title-lhcb-at-the-frontier-of-flavor-physics-the-three-movements-of-the-flavor-sonata/
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