A Walk into the DarkSide

by Dr Xin Xiang (Brown University)

Tuesday 17 Aug 2021, 10:00 → 12:00 Asia/Shanghai

Zoom meeting： https://us06web.zoom.us/j/84739093659?pwd=K2Y0Z1pHelBxQyt3N2JIdEZ1cTF5UT09（ID: 847 3909 3659, Password: 123456）

Abstract:

The DarkSide-50 was the first direct dark matter detection experiment at Gran Sasso National Lab using low-radioactive Ar extracted from underground sources as a target. The detector was on commissioning from 2013 to 2018. We successfully achieved background-free in all three WIMP analyses and paved the road for the next generation multi-ton scale Ar dark matter experiment. In this talk, I will first walk you through the DarkSide-50 program, followed by a discussion on a dangerous background that could have derailed the background-free goal. Finally, I will show the analysis and results from the last dark matter search using the full 532 live days of data published in 2018. Throughout the talk, I will make comparisons between the Ar and Xe technologies.

 

Biography:

Xin was originally from Xi'an. Xin went to the University of California at Santa Barbara in 2009 and received his B.S. degree in physics (advisor: Benjamin Monreal) in 2013 with the highest honors. Xin then attended the Ph.D. program at Princeton University (advisor: Cristiano Galbiati) where he worked on the DarkSide-50 experiment from 2013 to 2018. Xin started as a Leon N Cooper Postdoctoral fellow at Brown University (PI: Richard Gaitskell) in October 2018 and has been working on the LUX-ZEPLIN experiment since then. In his leisure time, Xin enjoys watching and playing basketball.