Institute for Nuclear and Particle Astrophysics (INPA) at LBNL

The INPA Seminar weekly talks are on Fridays, starting at 12:00 pm, unless informed otherwise. The seminar talk starts with a brief presentation of the weekly scientific news. Typically, the talks conclude by 1:00 pm. The seminars are held in the Sessler Conference Room,  located in Bldg. 50A- 5132.

The committee members are:

The seminar schedule for the Institute for Nuclear and Particle Astrophysics (INPA) is tentative and becomes final a few days before the Friday talk.

Please send all suggestions for future INPA talks and speakers to the INPA Committee.

To be added to the INPA News Mailing List, please contact Erica Hall.

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SPEAKER: Prof. Christian Weinheimer (University of Münster)-TITLE: The dark matter experiment XENONnT and first WIMP results

April 14, 2023 @ 12:00 pm - 1:00 pm

This is an In-Person [HYBRID] Event

LOCATION: Sessler Conference Room – 50A – 5132

DATE: April 14, 2023

TIME: 12:00- 1:00 PM

TITLE: The dark matter experiment XENONnT and first WIMP results

ABSTRACT: Evidence for about 6 times more matter in the universe than normal
matter is coming from cosmological observations and analyses on all
scales. What this exotic dark matter is remains still a secret.
The direct search experiment for dark matter XENONnT located at the
Italian underground laboratory LNGS is looking for weakly interacting
massive particles (WIMPs) and other rare event physics. As an upgrade of
the previous experiment XENON1T it uses a dual-phase time projection
chamber with a total mass of 8.5t of liquid xenon. The recent electron
recoil data from a 1.16 t*yr exposure of XENONnT allowed to set
stringent limits on solar axions, an enhanced neutrino magnetic moment
and bosonic dark matter. XENONnT’s unprecedented low background
originates from very careful material selecting and screening as well as
from active removal of Kr-85 and Rn-222 by cryogenic distillation. This
low background rate allows for a rich physics search program with
XENONnT with WIMPs being the main objective.
In this talk the status of the XENONnt experiment and its first WIMP
search results from a blind analysis in an energy range between 3.1 keV
and 60.0 keV and an exposure of approximately 1.1 tonne-year is presented.”

Join Zoom

Meeting ID: 950 1669 6011
Passcode: 247722


April 14, 2023
12:00 pm - 1:00 pm

INPA guests from campus can now come to the lab early on Fridays. The INPA Common Room (50-5026) is reserved for our guests from 10:00 a.m. to 12:00 noon and from 1 p.m. to 5 p.m. Note that the seminars are now held in 50A-5132 to accommodate a more significant number of attendees.

CPTea Series (also known as INPA Tea Series)

The Physics Division CPTea Series invites you to an In-Person Tea Series 1st Friday of every month at 3:30 pm INPA Conference Room 50-5026.

Everyone is welcome to attend the open forum. Tea and light refreshments will be served.


INPA Common Room (50-5026)
3:30 pm

Access to the Lab

For a shuttle pass, please email Erica Hall. The pass is only valid for the day of the seminar.

Erica Hall