【11.3; Seminar】2025年粒子天体物理全国重点实验室系列学术报告 #30：Tracing Solar Modulation through Ice Cherenkov Observations and Yield Function Analysis

时间/Time: 11月3日周一下午2:00/Monday, November 3, 2:00 p.m.

地点/Location: 多学科楼124会议室/Meeting Room 124, Multidisciplinary building

报告人/Speaker: Assoc. Prof. Dr. Waraporn Nuntiyakul (Chiang Mai University, Thailand)

题目/Title: Tracing Solar Modulation through Ice Cherenkov Observations and Yield Function Analysis

主持人/Host: 陈明君/Mingjun CHEN

摘要/Abstract:

Understanding the long-term modulation of cosmic rays provides key insights into heliospheric processes that govern solar activity. This talk presents an analysis of Ice Cherenkov detector data from the South Pole, focusing on the solar modulation signature observed through atmospheric muons. The yield function, which represents the energy-dependent effective area linking the observed count rate of secondary particles to the primary cosmic rays at the top of the atmosphere, is currently being investigated through combined analysis of the Oden Latitude Survey (2009–2010) and simulation studies. This ongoing work aims to establish a quantitative interpretation of the detector’s response at high altitude. The study further connects to educational and outreach efforts through the development of the Smart CosmicWatch, improved by the CMU research team to enhance measurement capability, real-time data communication, and expandability for array-based studies. This progression demonstrates how fundamental research can inspire low-cost, compact detector innovations for muography and science education.

个人简介/Biography:

Assoc. Prof. Dr. Waraporn Nuntiyakul is a physicist at the Department of Physics and Materials Science, Chiang Mai University, Thailand. She serves as the Principal Investigator and national lead of the Thai-IceCube Collaboration, a research program initiated under a Royal Initiative that connects Thailand with the international IceCube Neutrino Observatory. Her research focuses on cosmic-ray modulation, neutrino detection, and solar–terrestrial physics, along with the development of advanced detector technologies. She leads several flagship projects supported by national research funding agencies, and her team has recently developed the Smart CosmicWatch, a compact detector system designed for muography and science education.