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X-WR-CALDESC:Events for INPA
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230804T120000
DTEND;TZID=America/Los_Angeles:20230804T130000
DTSTAMP:20260426T202304
CREATED:20230731T181613Z
LAST-MODIFIED:20230731T181637Z
UID:1513-1691150400-1691154000@inpa.lbl.gov
SUMMARY:Speaker: Jonathan Echevers (UC Berkeley)- Title: The EXO program: Neutrinoless Double-Beta Decay Searches in Xe-136
DESCRIPTION:DATE: August 4\, 2023 \nTIME: 12:00- 1:00 PM \nSPEAKER:  Jonathan Echevers (UC Berkeley)- Title: The EXO program: Neutrinoless Double-Beta Decay Searches in Xe-136 \nTITLE: The EXO program: Neutrinoless Double-Beta Decay Searches in Xe-136 \nABSTRACT: Neutrinoless double beta (0vBB) decay is currently one of the most compelling searches in nuclear and particle physics. If found\, it would imply the existence of Majorana fermions and lepton number violation\, both new physics beyond the Standard Model. The EXO-200 experiment consisted of a time projection chamber (TPC) with 200 kg of enriched liquid xenon (LXe)\, optimized to search for 0vBB of Xe-136. Data acquisition took place from 2011 to the end of 2018\, with a total exposure of 234.1kg yr. We found no statistically significant evidence for 0vBB\, leading to a lower limit on the half-life of 3.5×10^25 yr at the 90% confidence level (CL). The ultra-low background necessary for this search also provides a unique opportunity to probe other exotic processes\, such as Lorentz violation in double-beta decay\, electron recoils from dark matter\, Majoron emitting modes of double-beta decay\, and others. The first part of this talk will focus on the EXO-200 experiment and recent results for exotic-physics searches using this detector. In the second half of this presentation I will discuss the next generation experiment\, nEXO\, a 5 tonne LXe TPC with a projected 0vBB half-life sensitivity of 1.35×10^28 yr at the 90% CL in 10 years of data-taking. \nJoin Zoom  \nhttps://lbnl.zoom.us/j/95016696011?pwd=Tk1XOW1Xd3RYRnlsc2tEYmRWZlVVZz09 \nMeeting ID: 950 1669 6011\nPasscode: 247722
URL:https://inpa.lbl.gov/event/speaker-jonathan-echevers-uc-berkeley-title-the-exo-program-neutrinoless-double-beta-decay-searches-in-xe-136/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230811T120000
DTEND;TZID=America/Los_Angeles:20230811T130000
DTSTAMP:20260426T202304
CREATED:20230731T182626Z
LAST-MODIFIED:20230731T182656Z
UID:1516-1691755200-1691758800@inpa.lbl.gov
SUMMARY:Speaker: Damian Goeldi (ETH Zurich)- TITLE: Testing weak equivalence with the LEMING experiment
DESCRIPTION:DATE: August 11\, 2023 \nTIME: 12:00- 1:00 PM \nSPEAKER:  Damian Goeldi (ETH Zurich) \nTITLE: Testing weak equivalence with the LEMING experiment \nABSTRACT: The LEMING experiment aims to test weak equivalence in leptonic antimatter. We will employ atomic interferometry to measure the vertical deviation of a horizontal cold muonium (M = μ+ + e−) beam. Existing muonium production schemes are unsuitable for such a precise measurement due to their large velocity and angular spread. To overcome this limitation we have demonstrated a new technique leveraging the chemical potential of superfluid helium (SFHe) to produce a cold muonium beam with a very well defined velocity and angular spectrum. Due to the SFHe our particle detectors need to operate at temperatures below 1K. We have successfully achieved sub-kelvin operation of commercial silicon photomultipliers (SiPMs). Furthermore\, a strong background suppression is required in order to reach the intended sensitivity. This can be achieved via a reliable detection of the atomic electron from the muonium\, left over after the decay of the antimuon. However\, these electrons possess very low energies. Hence\, a second detector is required which not only operates below 1K\, but also features an energy detection threshold below 1keV. We are currently testing several candidate detectors including perovskite nanocrystals and superconducting nanowires. This talk will give an overview of the LEMING experiment with a focus on the cold muonium beam as well as the cryogenic particle detectors. \nJoin Zoom  \nhttps://lbnl.zoom.us/j/95016696011?pwd=Tk1XOW1Xd3RYRnlsc2tEYmRWZlVVZz09 \nMeeting ID: 950 1669 6011\nPasscode: 247722
URL:https://inpa.lbl.gov/event/speaker-damian-goeldi-eth-zurich-title-testing-weak-equivalence-with-the-leming-experiment/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230818T120000
DTEND;TZID=America/Los_Angeles:20230818T130000
DTSTAMP:20260426T202304
CREATED:20230816T180020Z
LAST-MODIFIED:20230816T180026Z
UID:1521-1692360000-1692363600@inpa.lbl.gov
SUMMARY:NO INPA
DESCRIPTION:
URL:https://inpa.lbl.gov/event/no-inpa-2/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230825T120000
DTEND;TZID=America/Los_Angeles:20230825T130000
DTSTAMP:20260426T202304
CREATED:20230822T171331Z
LAST-MODIFIED:20230822T171331Z
UID:1524-1692964800-1692968400@inpa.lbl.gov
SUMMARY:NO INPA SEMINAR
DESCRIPTION:
URL:https://inpa.lbl.gov/event/no-inpa-seminar-5/
END:VEVENT
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