2–3 Nov 2024
University of Kansas
US/Central timezone

Modeling frequency instability in high-quality resonant experiments DarkSRF

3 Nov 2024, 11:56
18m
2048 Malott Hall (University of Kansas)

2048 Malott Hall

University of Kansas

Department of Physics & Astronomy University of Kansas Lawrence, KS

Speaker

Hao-Ran Cui (University of Minnesota, twin cities)

Description

In the pathfinder project of DarkSRF, the thermal jittering of the receiver cavity has been conservatively modeled with a constant mismatch, assuming the receiver is always off-resonant with the emitter. In this paper, we develop a more refined model by treating jittering as a random process, utilizing its power density spectrum. We derive the analytical solutions for the expectation value and variance of the power output and validate them with numerical simulations. Our results indicate significantly less power loss than previously predicted, leading to a substantial improvement in the existing bounds on dark photon mass and mixing strength.

Authors

Hao-Ran Cui (University of Minnesota, twin cities) Saarik Kalia (University of Minnesota) Stephen Henrich (University of Minnesota) Zhen Liu

Presentation materials