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研究生：	歐陽明崴 OuYang, Min-Wei
論文名稱：	The analysis of the TASEH CD102 data
指導教授：	余欣珊 Shin-Shan Yu
口試委員:
學位類別：	碩士 Master
系所名稱：	理學院 - 物理學系 Department of Physics
論文出版年：	2022
畢業學年度：	110
語文別：	中文
論文頁數：	103
中文關鍵詞：	軸子、暗物質
外文關鍵詞：	TASEH, Haloscope
相關次數：	點閱：8 下載：0
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台灣軸子偵測實驗(TASEH）是一個尋找質量為20 μeV 的軸子和類軸
子粒子的實驗，軸子同時也是暗物質的候選粒子之一，在本實驗中，我們
使用微波共振腔和低噪放大器檢測強磁場下軸子轉換成光子的信號，本篇
論文會詳細描述我們是如何設計實驗參數跟分析我們於西元2021年10月至
11月所取的實驗數據。

The Taiwan Axion Search Experiment with Haloscope (TASEH) is a haloscope experiment to search for axions and axion-like-particles with a mass of 20 µeV. The axion is a compelling particle candidate for dark matter. In this experiment, we use a microwave cavity and low-noise amplifiers to detect the signal of axion-to-photon conversion under a strong magnetic field.
This is a thesis about the design of experimental parameters and the analysis of the CD102 data that were collected in October-November 2021.

Introduction                                             1
1 The Axion                                              1
2 Other Axion Experiments                                2
3 Taiwan Axion Search Experiment with Haloscope          4
3.1 Overview                                             4
3.2 Cavity                                               4
3.3 Dilution refrigerator                                6
3.4 Readout                                              6
Axion signal                                             9
1 Overview                                               9
2 signal                                                 9
3 The target signal-to-noise ratio                      10
Experimental Parameters                                 13
1 Overview                                              13
2 Calibration of the amplification chain                13
3 Expected limit                                        15
3.1 Lorentz distribution                                15
3.2 Step size                                           16
3.3 Scan rate                                           16
3.4 Determination of the parameters                     18
Data Analysis                                           21
1 Overview                                              21
2 Date format and storage                               21
3 Analysis step                                         21
3.1 Fast Fourier transform                              22
3.2 The Savitzky-Golay Filter                           23
3.3 Rescale the spectrum                                26
3.4 Combine the spectrum vertically                     26
3.5 Combine the spectrum horizontally                   28
3.6 Rescan                                              29
3.7 Set the limit on |gaγγ|                             30
4 CD096                                                 32
4.1 Overview                                            32
4.2 Conclusion                                          32
5 CD099                                                 33
5.1 Hemt calibration result                             33
5.2 Experimental parameters                             35
5.3 Data taking                                         36
5.4 The study of HEMT response as a function of time    38
5.5 Process of analysis                                 42
5.6 Conclusion                                          44
6 CD102                                                 45
6.1 Overview                                            45
6.2 Hemt calibration result                             45
6.3 Experimental parameters                             46
6.4 Monitor system                                      49
6.5 Data taking                                         51
6.6 Rescan                                              53
6.7 Hemt drift                                          55
6.8 Process of analysis                                 60
6.9 Synthetic axion                                     62
6.10 Set the limit with various way                     65
6.11 Systematic uncertainties                           67
6.12 Conclusion                                         68
Conclusion                                              71
bibliography                                              73
                                

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