微中子望遠鏡的前端讀出系統

Abstract

摘要 台大高能實驗室的微中子望遠鏡是用作偵測從宇宙射線中的陶子微中子（ντ）,因陶子 微中子比較容易和相對於宇宙密度較大的地球地表起作用產生陶子（τ）,陶子其次級粒子 在能量大的情況下會產生契倫諧夫光（Cherenkov light).我們可以在山之背面偵測到此光 之訊號來作為偵測到陶子微中子之證據. 微中子望遠鏡之系統包括了光學部份和前端的電子式讀出系統,我們的電子式讀出系統 包括了光電倍增管（MAPMT）,前端放大器(Pre-amp.),資料擷取板(DCM). 資料擷取系統(DAQ) 則是負責將資料擷取板上所紀錄之已觸發之事件資料經由CPCI的匯流排,擷取後儲存在儲 存裝置中（如硬碟）. 我負責的部份是前端電子是讀出系統的校正測試及資料擷取系統,在本論文中我將會介 紹資料擷取系統的流程以及一些前端讀出系統的測試.

Abstract NuTel is the detector for detecting Tau Neutrino. By watching light from air shower behind the mountain, we may detect high energy ¿ particle that is coming from º¿ . The whole system consists of optics and electronic readout. Electronic readout include MAPMT, Pre-amp and DCM. Finally, DCMs record triggered events and DAQ read and save these data into hard disc through CPCI bus. My study are related to the front-end readout system tests and DAQ (data acquisition system). In this thesis I will introduce how user can use this DAQ system to take data from DCM and how can driver transfer data to user.The electronics test results of Pre-amps and DCMs are also discussed in this thesis.