| 摘要: | AMS實驗是位於國際太空站上的高能粒子物理實驗，測量宇宙射線中帶電粒子的成分與流量。AMS的主要探測器是一個帶電粒子的磁譜儀，能夠精確的測量粒子的動量、電荷的大小、電荷的正負號。AMS已經運行7年，取得超過一千二百億個宇宙射線事例，發表了宇宙射線中電子、正電子、質子、反質子、及原子核（包括氦、鋰、鈹、硼、碳、氮、氧）的流量，用於研究宇宙中反物質、暗物質相關的基本物理問題，以及宇宙射線的產生與傳播過程。 中央大學團隊是AMS實驗的起始團隊之一，在建造AMS探測器期間，本團隊與其他台灣團隊共同負責電子系統的設計，建造，與測試。AMS於2011年5月發射至國際太空站後，本團隊隨即參與數據分析及探測器校正。過去三年進行質子、反質子、氦核與碳核的流量分析、開發新的粒子軌跡分析程序以提高磁譜儀的精確度、重新校正粒子電荷以提高原子核測量的精確度。同時運用AMS的太空電子學經驗，開發新一代的太空電腦，已成功的在太空站上進行六個月的測試。 本計劃預期延續我們在AMS實驗的研究工作。預期將測量反質子、反氘核、反氦的能譜，以研究反物質與暗物質相關基礎物理問題，同時測量更重的原子核，進行鋁、矽、鐵等重元素的流量分析。同時，我們將持續進行太空電子系統的開發，設計各種介面模組以配合太空電腦的使用。 ;AMS is a space-borne particle physics detector located on the International Space Station. It measures the flux of charged cosmic rays. Since AMS is a magnetic spectrometer based on Silicon detector, it measures precisely the momentum, charge, and charge sign of particles. After 7 years of operation, AMS has collected more than 128 billion cosmic ray events, and published the fluxes of electron, positron, proton, antiproton, and nuclei (including He, Li, Be, B, C, N, O). The results has been used extensively in the study of fundamental questions of anti-matter and darkmatter in the universe, as well as the production and propagation of cosmic rays in the galaxy. The NCU AMS team is one of the founding collaborators of AMS. During the construction of AMS, we joined force with Academia Sinica and NCSIST teams in design, production, and testing of AMS electronics system. We started physics analysis and detector calibration after the launch of AMS detector to the ISS in May 2011. During the past three years, we have carried out measurements of the fluxes of the proton, antiproton, helium and Carbon. We developed new track fitting algorithm to improve the tracker resolution, and calibrated the charge measurement to improve the precision of nuclei spectra. In parallel, the Taiwan AMS team has developed a new generation space computer based on the experiences of AMS DAQ computer. The first model has successfully operated for 6 months on the ISS. In the proposal, we plan to continue our activities in AMS. We will perform analysis to measure the antiproton, antideuteron, and anti-Helium fluxes. They will provide critical information about the darkmatter and the origin of the cosmic rays. We will also extend our nuclei measurement program to heavier elements like Al, Si, and Fe. They will provide crucial data for the study of the production and propagation of cosmic rays in the galaxy. Finally, working with the Academia Sinica group, we will start to develop interface modules for the space computer. |
