May 29, 2018 to June 3, 2018
Hyatt Regency Indian Wells Conference Center
US/Pacific timezone

Position Reconstruction Using Photon Timing for the DEAP-3600 Liquid Argon Dark Matter Experiment

May 31, 2018, 5:50 PM
South Foyer | Pinon Room (Hyatt Regency Indian Wells Conference Center)

South Foyer | Pinon Room

Hyatt Regency Indian Wells Conference Center

44600 Indian Wells Lane, Indian Wells, CA 92210, USA
Parallel DM Dark Matter


Dr Yu Chen (University of Alberta)


DEAP-3600 is a single-phase liquid argon (LAr) dark matter detector being operated 2 km underground at SNOLAB. The ultra-pure LAr target is contained in a spherical acrylic vessel of 3600 kg capacity, viewed by an array of 255 photomultiplier tubes (PMTs). The expected sensitivity to the spin-independent WIMP-nucleon cross-section is $10^{-46}$ cm$^2$ at 100 GeV WIMP mass. Natural radioactive contamination can cause alpha decays originating in the acrylic vessel or TPB wavelength shifter, or gamma rays, mostly from PMT materials, that may induce Cerenkov light. These are potential surface backgrounds. Reconstruction of the position of the interactions taking place in the detector utilizes both charge and timing. Including this information in our suite of cuts allows us to identify and remove almost all surface background events. An overview and the results of the initial filling phase is presented. A method of event position reconstruction emphasizing photon timing will be discussed.
E-mail [email protected]
Collaboration name DEAP-3600

Primary author

Dr Yu Chen (University of Alberta)

Presentation materials