Razvoj komore vremenske projekcije za sPHENIX eksperiment

master's thesis

• Title (english): Development of a Time Projection Chamber for sPHENIX experiment
• Author: Mirta Dumančić
• Mentor: Mihael Makek (mentor)
• Committee member: Mihael Makek (predsjednik povjerenstva)
• Committee member: Mirko Planinić (član povjerenstva)
• Committee member: Davor Horvatić (član povjerenstva)
• Committee member: Nikola Poljak (član povjerenstva)
• Committee member: Tomislav Marketin (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Physics); Zagreb
• Defense date and country: 2014-09-25, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract

Tema ovog rada je istraživanje i razvoj komore vremenske projekcije u novu nadogradnju sPHENIX detektora na sudarivacu RHIC (Relativistic Heavy Ion Collider) na BNL-u (Brookhaven National Laboratory). Komora vremenske projekcije plinski je detektor koji omogucuje trodimenzionalnu rekonstrukciju položaja cestice koja dolazi iz sudara. U sudarima teških iona (kao što su Au-Au) sa velikim multiplicitetom cestica ovaj detektor predstavlja dobro rješenje za rekonstrukciju putanje i identifikaciju cestica. Rad nakon uvoda u osnovne koncepte teorije kvantne kromodinamike te pregleda sadašnje konstrukcije PHENIX detektora iznosi aktualni prijedlog za nadogradnju detektora. Fizikalna motivacija za nadogradnju usko je vezana za detaljno proucavanje karakteristika novog stanja materije pod nazivom kvark-gluon plazma. Observable koje karakteriziraju navedeno stanje postavljaju zahtjeve na konstrukciju detektora i njegovu rezoluciju. Tako su nakon pregleda nadogradnje u radu predstavljena dva dijela istraživanja rada buduce komore vremenske projekcije: brze simulacije rada komore programom GEANT4 te laboratorijska ispitivanja GEM (Gas Electron Multiplier) detektora koji su element za pojacavanje signala u toj komori. Mjerenja su obavljena u Laboratoriju za teške ione na Weizmann institutu u Izraelu. Rezultati ovog rada jedan su od koraka u karakterizaciji mogucih detektorskih podsustava sPHENIX detektora prije završnog prijedloga te konstrukcije i instalacije na RHIC sudarivacu koja se ocekuje 2020. godine.

Abstract (english)

Aim of this thesis was to explore the possibility of integrating a Time Projection Chamber (TPC) into a new upgrade of PHENIX detector at Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory called sPHENIX. TPC is a gas detector that can provide a three-dimensional position reconstruction of a particle coming from a collision. This detector displays good properties in high-multilicity events such as the ones in heavy ion collisions at RHIC and it can give information about particle’s identity and trajectory. In this thesis some basic concepts of the theory of quantum chromodynamics and quark-gluon plasma are shortly introduced. Afterwords an overview of the current PHENIX detector as well as of the future sPHENIX upgrade are represented. Future upgrade sPHENIX will focus on measuring physical properties of the new state of matter which is called quark-gluon plasma. Observables which will be measured impose certain physical requirements and resolution constrainds on future detector subsystems. The core of this thesis are two aspects of research of the future sPHENIX TPC: one aspect are GEANT4 detector simulations which provided us with information about momentum resolution of future chamber. The other aspect was examining the operation of GEM (Gas Electron Multiplier) detector which is a multiplication element for TPC electron signal. This experimental work was performed in the Heavy Ion Laboratory at Weizmann Institute of Science in Israel. Results of the work represented in this thesis are one of the steps in characterization of possible sPHENIX detector subsystems before the final proposal, construction and installation at RHIC collider which is expected in the year 2020.

• Keywords: sPHENIX eksperiment; komora vremenske projekcije
• Keywords (english): sPHENIX experiment; Time Projection Chamber
• Language: croatian
• URN:NBN: urn:nbn:hr:217:349150
• Study programme: Title: Physics; specializations in: Research; Course: Research; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: magistar/magistra fizike (magistar/magistra fizike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-06-14 14:47:19