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: Daniel Carney (LBL)-TITLE: Proposal for a Levitated Invisible Particle Sensor

March 3, 2023 @ 12:00 pm - 1:00 pm

This is an In-Person [HYBRID] Event

LOCATION: Sessler Conference Room – 50A – 5132

DATE: March 3, 2023

TIME: 12:00 PM

TITLE: Proposal for a Levitated Invisible Particle Sensor

ABSTRACT: Recently Dave Moore (Yale), Kyle Leach (Mines) and I proposed the use of a levitated mechanical quantum sensor combined with a pixelated electron/photon detector to look for invisible particles, particularly heavy sterile neutrinos in the keV-MeV range. The basic device consists of ~100nm scale silica spheres implanted with radioisotopes. When the isotope decays, via beta or electron capture, it will generically eject e-/gammas as well as a neutrino which escape the nanosphere, while the daughter atom is trapped in the sphere and causes it to recoil. With measurement precision on the sphere recoil at the “standard quantum limit”–which we have already achieved in a similar device at Yale–one can kinematically reconstruct the emitted neutrino momentum. I’ll outline how this works, compare it to previous AMO-y approaches (e.g. HUNTER), and talk about what we’d like to do at LBL.


Join Zoom Meeting:

Meeting ID: 950 1669 6011
Passcode: 247722


March 3, 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