以太空高能粒子偵測器探索宇宙;Probing the Universe with Space-Based High Energy Particle Detector

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/78452

Title:	以太空高能粒子偵測器探索宇宙;Probing the Universe with Space-Based High Energy Particle Detector
Authors:	張元翰;楊毅;林志勳;灰野禎一;李世昌
Contributors:	國立中央大學物理學系
Date:	2018-12-19
Issue Date:	2018-12-20 11:51:37 (UTC+8)
Publisher:	科技部
Abstract:	AMS實驗是位於國際太空站上的高能粒子物理實驗。該實驗測量宇宙射線中帶電粒子的成分與流量。其中最重要的目的是觀測宇宙射線中反物質粒子的流量，並藉此研究宇宙暗物質的成分，以及宇宙正反物質不對稱等基本物理問題。同時，透過各種離子流量的測量，AMS也可大幅提高我們對宇宙射線的產生與傳播等過程的了解。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。過去四年進行質子與氦核的流量分析。與此同時，我們也運用AMS的太空電子學經驗，開發新一代的太空電腦，該成品將於未來一年内發射至國際太空站進行測試。本計劃預期延續我們在AMS實驗的研究工作，並開始進行包括反質子、氘核、及碳氧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，將AMS的經驗進一步推廣。 AMS的軌跡偵測器熱控系統自2013年起發現有老化現象，四個幫浦之一已經停止運轉，另外兩個也出現不穩定的徵兆。經過詳細的分析，其原因是幫浦的設計缺失，造成潤滑不足，以致零件在高速轉動下磨損。AMS團隊計晝將建造一個新的熱控系統，NASA已同意進行太空漫步以更換這個系統。這個系統的電子部份是由台灣團隊負責建造，這部份的更新也將由我們負責。本團隊將與中研院和中科院團隊合作進行電子系統的設計、建造、與測試。 ;AMS is a particle physics experiment on the International Space Station. The AMS detector measures the composition and fluxes of charged particles in the cosmic rays. The goal is to study fundamental physics problems like the dark matter composition and search for anti-nuclei in the universe. In addition, the measurement of fluxes of ions will provide important input for the understanding of the production and propagation of the cosmic rays. The NCU AMS team is one of the initial collaborators of AMS. During the construction of AMS, we joined the effort of 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 four years, we have carried out measurements of the proton and helium fluxes. 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 been selected for a test run in the space station next year. In the proposal, we plan to continue our research in AMS. We will perform analysis to measure the antiproton and deuteron fluxes. They will provide critical information about the darkmatter and the origin of the cosmic rays. We will also start the measurement of heavy elements like Carbon or Oxygen. These analyses will improve our understanding of the cosmic ray propagation in the galaxy. We plan to continue the development of the space computer for more varieties of functionality and performance. AMS Tracker Thermal Contral System (TTCS) has shown aging since 2013. One of four pumps stopped operation. Two other pumps also see intermittent problems. After detailed investigation, we understand that the problem is due to insufficient lubrication, which caused pump components to suffer premature wearing. The AMS team plans to replace the whole system. NASA has agreed to carry out a EVA for the replacement. The electronics system for the TTCS was built by Taiwan teams, and we will take responsibility to build the electronics system of the upgrade system.
Relation:	財團法人國家實驗研究院科技政策研究與資訊中心
Appears in Collections:	[Department of Physics] Research Project

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