Jun 18 – 23, 2023
University of New Brunswick
America/Halifax timezone
Welcome to the 2023 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2023!

(I) Recent progresses of the LAMPOST Experiment

Jun 20, 2023, 8:30 AM
30m
UNB Kinesiology (Rm. 208 (max. 68))

UNB Kinesiology

Rm. 208 (max. 68)

Invited Speaker / Conférencier(ère) invité(e) Symposia Day (PPD - PPD) - Discovering New Paths to Discovery: New Technologies and Methods to Uncover BSM Physics | Découvrir de nouvelles voies vers la découverte : Nouvelles technologies et méthodes pour découvrir la physique au-delà du modèle standard (PPD) T1-3 Discovering New Paths to Discovery: New Technologies and Methods to Uncover BSM Physics Symposium | Symposium sur les nouvelles technologies et méthodes pour découvrir la physique au delà du modèle standard (PPD)

Speaker

Junwu Huang (Perimeter Institute)

Description

Uncovering the nature of dark matter is one of the most important goals of particle physics. Light bosonic particles, such as the dark photon, are well-motivated candidates: they are generally long lived, weakly-interacting, and naturally produced in the early universe. LAMPOST (Light A' Multilayer Periodic Optical SNSPD Target) experiment searches for dark photon dark matter in the eV mass range, via coherent conversion of dark photon to photon in a multilayer dielectric haloscope, which are subsequently collected with superconducting nanowire single-photon detector (SNSPD).

I this talk, I will report on the recent progress of the LAMPOST experiment. In a prototype experiment, we achieve efficient photon detection with a dark count rate (DCR) of ∼ $6 \times 10^{−6}$ counts/s. We find no evidence for dark photon dark matter in the mass range of ∼ 0.7-0.8 eV with kinetic mixing $\epsilon \geq 10^{−12}$, improving existing limits in the mass range. I will also show some recent progress in experimental design and performances of SNSPDs, and how these could allow us to probe significant new parameter space for dark photon and axion dark matter in the meV to 10 eV mass range.

Keyword-1 dark matter
Keyword-2 Single photon detector
Keyword-3 dark photon

Primary author

Junwu Huang (Perimeter Institute)

Presentation materials

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