本論文旨在提供 sPHENIX INTT 偵測器的精密對位（alignment）研究。sPHENIX 是 RHIC PHENIX 實驗的升級計畫，其主要目標是研究強交互作用的 Quark-Gluon Plasma 與 cold-QCD。INTT 是 sPHENIX 實驗追蹤系統（tracking system）的組成之一。INTT 為一套由 56 個 silicon ladders 組成的雙層矽追蹤器（two-layer silicon tracker），其目標在於提升高橫向動量（high transverse momentum）帶電粒子的動量解析度（momentum resolution），並協助事件同步（event synchronization）與軌跡辨識（pattern recognition）。 對於許多物理分析而言，獲得偵測器的正確幾何結構（geometry）至關重要。本研究透過分析 2024 年 4 月至 5 月 commissioning 階段的 cosmic-ray data-taking runs，取得高精度的 cosmic ray 資料集，並據此進行對位研究。 此外，本論文亦介紹臺灣地區 HGCAL sensor QC 的現況。HGCAL（High-Granularity Calorimeter）是 CMS 的一項重要升級計畫，其目標是在 HL-LHC 運轉期間，維持 endcaps 優異的 calorimetric performance。HL-LHC（High Luminosity LHC）為 LHC（Large Hadron Collider）的升級版本，其累積積分亮度（integrated luminosity）將達到目前 LHC 的 10 倍。 HGCAL 在 electromagnetic calorimeter（ECAL）與 hadronic calorimeter（HCAL）兩個部分皆採用前所未有的橫向（transverse）與縱向（longitudinal）高分割設計（segmentation）。其中，ECAL 以及大部分的 HCAL 將採用六角形矽感測器（hexagonal silicon sensors），其 cell size 介於 0.52 至 1.18 cm² 之間。部分矽感測器將於 NCU 進行電性測試（electrical testing）。;This thesis aims to provide the precise alignment study for the sPHENIX INTT detector. The sPHENIX is an upgrade project of the RHIC′s (Relativistic Heavy-Ion Collider) PHENIX experiment. The goal of the sPHENIX experiment is to study the strongly interacting Quark-Gluon Plasma and cold-QCD. The INTT detector is one of sPHENIX experiment′s tracking system. The INTT is a two layer silicon tracker consists of 56 silicon ladders. The INTT aims to improve the momentum resolution for charged particle with high transverse momentum and help the event synchronization and pattern recognition. It is essential to obtain the correct geometry of the detector for many analyses. The precise cosmic ray dataset is obtain through the analysis of commissioning cosmic data taking runs in April and May 2024. This thesis also shows status of the HGCAL sensor QC in Taiwan. The HGCAL (high-granularity calorimeter) is a major upgrade of CMS， and it is necessary to maintain excellent calorimetric performace in the endcaps during the HL-LHC operation. The HL-LHC (High Luminosity LHC) is the upgrade of the LHC (Large Hadron Collider)， and it will integrate 10 times more luminosity than the LHC. The HGCAL features unprecedented transverse and longitudinal segmentation for both electromagnetic (ECAL) and hadronic (HCAL) compartments. The ECAL and a large fraction of HCAL will be based on hexagonal silicon sensors of 0.52－1.18 cell size. A fraction of silicon sensors will be electrically tested at NCU.
