News & Events

HEPL / KIPAC Seminar

Monday — May 19, 2014

Tenzing Joshi

UC Berkeley and Lawrence Livermore National Laboratory

A G/NARRLI Effort: Measuring the Ionization Yield of Low-Energy Nuclear Recoils
in Liquid Argon

Abstract: The response of liquid argon to low-energy (~keV) nuclear recoils is important for determining the sensitivity to light WIMP dark matter and coherent elastic neutrino-nucleus scattering. To date, the low-energy response of liquid argon has not been characterized. To study this regime, we built a small prototype dual-phase argon proportional scintillation counter (G/NARRLI) at LLNL.

In this presentation I discuss several calibration techniques that we developed as part of this effort. Additionally, I present results from the first measurement of nuclear recoil ionization yield in liquid argon, which is currently the lowest energy measurement of nuclear recoils in liquid argon.

Location: Physics/Astrophysics Bldg.,Kiestler Conference Rooms 102/103(Map)

(Light refreshments available 4:00pm; Presentation begis 4:15pm)

Open to All