請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/774
完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 熊怡(Yee Bob Hsiung) | |
dc.contributor.author | Hsiao-Ru Pan | en |
dc.contributor.author | 潘孝儒 | zh_TW |
dc.date.accessioned | 2021-05-11T05:00:55Z | - |
dc.date.available | 2019-07-15 | |
dc.date.available | 2021-05-11T05:00:55Z | - |
dc.date.copyright | 2019-07-15 | |
dc.date.issued | 2019 | |
dc.date.submitted | 2019-07-09 | |
dc.identifier.citation | [1] Laurie M. Brown. “The idea of the neutrino”. In: Physics Today 31.9 (1978), pp. 23–28.
[2] W Pauli Jr. “address to the Group on Radioactivity”. In: Tübingen, Germany 4 (1930), p. 324. [3] J. Chadwick. “Possible Existence of a Neutron”. In: Nature 129 (1932), 312 EP –. [4] F. Reines and C. L. Cowan. “Neutrino physics”. In: Phys. Today 10N8 (1957), pp. 12–18. [5] C. L. Cowan et al. “Detection of the Free Neutrino: A Confirmation”. In: Science 124.3212 (1956), pp. 103–104. ISSN: 00368075, 10959203. [6] B. Pontecorvo. “Mesonium and Antimesonium”. In: Soviet Journal of Experimental and Theoretical Physics 6 (1958), p. 429. [7] Ziro Maki, Masami Nakagawa, and Shoichi Sakata. “Remarks on the Unified Model of Elementary Particles”. In: Progress of Theoretical Physics 28.5 (1962), pp. 870–880. eprint: /oup/backfile/content_public/journal/ptp/28/5/10.1143/ptp.28.870/2/28-5-870.pdf. [8] P. Adamson et al. “Measurement of Neutrino and Antineutrino Oscillations Using Beam and Atmospheric Data in MINOS”. In: Phys. Rev. Lett. 110 (25 2013), p. 251801. [9] Raymond Davis. “A review of the homestake solar neutrino experiment”. In: Progress in Particle and Nuclear Physics 32 (1994), pp. 13 –32. ISSN: 0146-6410. [10] Y. Fukuda et al. “Evidence for Oscillation of Atmospheric Neutrinos”. In: Phys. Rev. Lett. 81 (8 1998), pp. 1562–1567. [11] Q. R. Ahmad et al. “Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory”. In: Phys. Rev. Lett. 89 (1 2002), p. 011301. [12] K. Eguchi et al. “First Results from KamLAND: Evidence for Reactor Antineutrino Disappearance”. In: Phys. Rev. Lett. 90 (2 2003), p. 021802. [13] M. Apollonio et al. “Limits on neutrino oscillations from the CHOOZ experiment”. In: Physics Letters B 466.2 (1999), pp. 415 –430. ISSN: 0370-2693. [14] Y. Abe et al. “Indication of Reactor νe Disappearance in the Double Chooz Experiment”. In: Phys. Rev. Lett. 108 (13 2012), p. 131801. [15] D. Adey et al. “Measurement of the Electron Antineutrino Oscillation with 1958 Days of Operation at Daya Bay”. In: Phys. Rev. Lett. 121 (24 2018), p. 241805. [16] Liangjian Wen et al. “Measuring cosmogenic 9Li background in a reactor neutrino experiment”. In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 564.1 (2006), pp. 471 –474. ISSN: 0168-9002. [17] F. P. An et al. “Measurement of electron antineutrino oscillation based on 1230 days of operation of the Daya Bay experiment”. In: Phys. Rev. D 95 (7 2017), p. 072006. [18] Takatomi Yano. “Measurement of gamma-ray production from thermal neutron capture on gadolinium for neutrino experiments”. In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 845 (2017). Proceedings of the Vienna Conference on Instrumentation 2016, pp. 425 –428. ISSN: 0168-9002. [19] G. Dietze and H. Klein. “Gamma-calibration of NE 213 scintillation counters”. In: Nuclear Instruments and Methods in Physics Research 193.3 (1982), pp. 549 –556. ISSN: 0167-5087. [20] S. Abe et al. “Production of radioactive isotopes through cosmic muon spallation in KamLAND”. In: Phys. Rev. C 81 (2 2010), p. 025807. [21] Shirley Weishi Li and John F. Beacom. “First calculation of cosmic-ray muon spallation backgrounds for MeV astrophysical neutrino signals in Super-Kamiokande”. In: Phys. Rev. C 89 (4 2014), p. 045801. [22] T. Hagner et al. “Muon-induced production of radioactive isotopes in scintillation detectors”. In: Astroparticle Physics 14.1 (2000), pp. 33 –47. ISSN: 0927-6505. [23] The Double Chooz collaboration et al. “Yields and production rates of cosmogenic 9Li and 8He measured with the Double Chooz near and far detectors”. In: Journal of High Energy Physics 2018.11 (2018), p. 53. ISSN: 1029-8479. [24] D.R. Tilley et al. “Energy levels of light nuclei A=8,9,10”. In: Nuclear Physics A 745.3 (2004), pp. 155 –362. ISSN: 0375-9474. [25] M. Tanabashi et al. “Review of Particle Physics”. In: Phys. Rev. D 98 (3 2018), p. 030001. [26] Rene Brun and Fons Rademakers. “ROOT —An object oriented data analysis framework”. In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 389.1 (1997). New Computing Techniques in Physics Research V, pp. 81 –86. ISSN: 0168-9002. [27] F. P. An et al. “Observation of Electron-Antineutrino Disappearance at Daya Bay”. In: Phys. Rev. Lett. 108 (17 2012), p. 171803. [28] G Bellini et al. “Cosmogenic Backgrounds in Borexino at 3800 m water-equivalent depth”. In: Journal of Cosmology and Astroparticle Physics 2013.08 (2013), pp. 049–049. [29] F. P. An et al. “Cosmogenic neutron production at Daya Bay”. In: Phys. Rev. D 97 (5 2018), p. 052009. [30] Fengpeng An et al. “Neutrino physics with JUNO”. In: Journal of Physics G: Nuclear and Particle Physics 43.3 (2016), p. 030401. [31] Dimitri P. Bertsekas and John N. Tsitsiklis. Introduction to Probability, 2nd Edition. Athena Scientific, 2008. ISBN: 188652923X. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/handle/123456789/774 | - |
dc.description.abstract | 大亞灣微中子振盪實驗利用八個相同設計的反微中子探測器以及六個位於中國東
南沿海大亞灣地區之核能反應爐作為反微中子源來進行測量。將探測器放置於遠 點及近點兩種不同的相對於反應爐位置的測量方法,我們的測量結果為微中子振 盪理論提供顯著的證據。透過一千九百五十八天所累積之數據,大亞灣實驗組在 微中子振盪模型參數(sin² θ_13, Δm²_32) 的測量上獲得空前的準度。 儘管如此,宇宙射線所產生之放射性同位素鋰-9 以及氦-8 仍然是實驗中一項 重要的系統誤差來源。在過去的研究裡,我們透過量測微中子訊號以及渺子訊號 的時間差分佈來估計這些同位素的含量。但是這個方法在渺子訊號的出現頻率很 高時無法有效的測量這些同位素,而大亞灣實驗中的近點由於地底深度較淺所以 宇宙射線的頻率較高剛好符合這種特性,因此許多方法被提出以解決這個問題。 不過這些方法大多缺乏理論支持也因此在可能導致系統誤差遭到低估。 本論文開發一種新的方法來測量這些同位素,除了渺子以及微中子訊號的時間 資訊外,我們將微中子訊號的頻譜資訊同時納入以增加測量的準確度。將此方法 用於大亞灣實驗之數據,我們在同位素含量的測量上得到了和先前結果一致的結 果以及相似或是更低的誤差。不僅如此,由於在測量中加入了頻譜資訊讓我們得 以檢驗這些同位素在不同變數上之分佈以及發現先前所忽略的其他同位素所產生 之訊號。最後我們將數個不同實驗所測量到的鋰-9 及硼-12 之產率利用冪律分布 進行分析,此分析將可為未來的實驗進行預測。 | zh_TW |
dc.description.provenance | Made available in DSpace on 2021-05-11T05:00:55Z (GMT). No. of bitstreams: 1 ntu-108-R04222036-1.pdf: 12704436 bytes, checksum: 98a9e667a98901acdda18f1c73dbb8b6 (MD5) Previous issue date: 2019 | en |
dc.description.tableofcontents | List of Figures xii
List of Tables xvi 1 Introduction 1 1.1 A brief history of neutrinos 1 1.2 Neutrino oscillation 3 1.3 Neutrino oscillation experiments 4 1.3.1 Solar neutrino experiments 5 1.3.2 Reactor neutrino experiments 7 1.4 Cosmogenic isotopes 9Li and 8He in reactor neutrino experiments 8 1.5 Thesis outline 9 2 Daya Bay Reactor Neutrino Experiment 10 2.1 Introduction 10 2.2 Experiment layout 11 2.3 Anti-neutrino Detector 12 2.4 Event Reconstruction 15 2.4.1 PMT calibration 16 2.4.2 Light yield conversion 17 2.4.3 Nonuniformity 17 2.4.4 Energy resolution 20 2.4.5 Anti-neutrino energy 21 2.5 IBD Signal Selection 22 2.5.1 Flasher cut 24 2.5.2 Muon veto 24 2.5.3 Energy selection 26 2.5.4 Capture time 27 2.5.5 Multiplicity cut 28 2.6 Background rejection 29 2.6.1 Uncorrelated backgrounds 29 2.6.2 Correlated backgrounds 30 2.7 Oscillation analysis 35 2.8 Results 39 3 9Li and 8He analysis 42 3.1 9Li and 8He 42 3.2 Statistical model 43 3.2.1 An interesting property 48 3.2.2 Practical considerations 48 3.2.3 A naive attempt 50 3.3 Spectral information 50 3.3.1 Incorporating spectral information 53 3.3.2 Beyond energy spectra 56 3.4 Summary of the model 58 4 Signal selection 60 4.1 Signal selection 60 4.1.1 Signal distributions 61 4.2 Muon selection 62 4.2.1 Neutron tagging 65 4.2.2 Correlated muon events 66 5 Results 73 5.1 nGd results 76 5.2 12B and 12N 77 5.3 nH results 94 5.4 Unified results 96 6 Conclusions and prospects 125 Appendices 130 A Review of probability theory 131 A.1 Random variables 131 A.2 Distribution 132 A.3 Joint distribution 132 A.4 Sum of two random variables 132 A.5 Poisson distribution 133 A.6 Erlang distribution 133 B Reparameterization trick 135 C List of fitted parameters 137 | |
dc.language.iso | zh-TW | |
dc.title | 大亞灣微中子振盪實驗中宇宙射線所產生之同位素鋰-9及氦-8分析 | zh_TW |
dc.title | Analysis of cosmogenic isotopes Lithium-9 and Helium-8 in the Daya Bay Reactor Neutrino Experiment | en |
dc.date.schoolyear | 107-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 張寶棣(Pao-Ti Chang),何小剛(Xiao-Gang He),林貴林(Guey-Lin Lin) | |
dc.subject.keyword | 大亞灣微中子震盪實驗,同位素,宇宙射線,微中子,微中子震盪, | zh_TW |
dc.subject.keyword | Daya Bay Reactor Neutrino Experiment,cosmogenic isotopes,neutrino,neutrino oscillation, | en |
dc.relation.page | 146 | |
dc.identifier.doi | 10.6342/NTU201901288 | |
dc.rights.note | 同意授權(全球公開) | |
dc.date.accepted | 2019-07-09 | |
dc.contributor.author-college | 理學院 | zh_TW |
dc.contributor.author-dept | 物理學研究所 | zh_TW |
顯示於系所單位: | 物理學系 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-108-1.pdf | 12.41 MB | Adobe PDF | 檢視/開啟 |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。