Sökning: "Scintillators"

Visar resultat 1 - 5 av 10 uppsatser innehållade ordet Scintillators.

1. 1. Characterization of neutron detection efficiency in a liquid organic scintillator

   Kandidat-uppsats,

   Författare :Ebba Wargh; Nadine Tabeshnia; [2023]
   Nyckelord :;

   Sammanfattning : Neutron detectors in the form of liquid organic scintillators are widely used for nuclear disarmament purposes. The main purpose of this thesis is to characterize the neutron detection efficiency of the organic liquid scintillator EJ-309 using Monte Carlo based simulations in the simulation program Geant4. LÄS MER

3. 2. Test and Calibration of CUBES: a CubeSat X-ray Detector

   Master-uppsats, KTH/Fysik

   Författare :Caroline Holmberg; [2022]
   Nyckelord :Applied Physics; Astroparticle Physics; Tillämpad fysik; Astropartikelfysik;

   Sammanfattning : CUBES is an X-ray detector that will be placed aboard the KTH 3U CubeSat mission, MIST. Its purpose is to detect high energy X-rays as well as to test various components in a space environment. Two CUBES will be placed on the satellite. Each CUBES consists of a printed circuit board (PCB) with three multi pixel photon counters (MPPCs). LÄS MER

4. 3. Digitised charged-particle discrimination in CsI detector signals

   Kandidat-uppsats, Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

   Författare :Mats Bror Linus Persson; [2022]
   Nyckelord :Microball; Gammasphere; pulse-shape discrimination; scintillator; charge-comparison method; cosine similarity; exotic nuclei; fusion-evaporation reaction; Argonne National Laboratory; Physics and Astronomy;

   Sammanfattning : This work is aimed at improving the discrimination of protons and α particles in digitised signals from CsI(Tl) scintillators. This has been achieved using pulse-shape discrimination, wherein the shape of the pulses is used to learn which particle is detected. LÄS MER

5. 4. Software Development and Qualification Testing of a CubeSat X-ray Monitor

   Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

   Författare :Marcus Persson; [2019]
   Nyckelord :embedded software; cubesat; software; firmware; cubes; mist; x-ray; fpga; asic; weeroc;

   Sammanfattning : The CUBES (CUbesat x-ray Background Explorer using Scintillators) is a payload on the KTH student satellite MIST (MIniature STudent satellite) to evaluate Silicon Photo-multiplier technology and new scintillators such as GAGG (Gadolinium Aluminium Gallium Garnet, Gd3Al2Ga3O12) for future use in hard X-ray polarisation studies of Gamma-Ray Bursts. CUBES itself is designed to study the MIST in-orbit radiation environment by using a detector which is comprised of a silicon photomultiplier coupled to different scintillator materials. LÄS MER

7. 5. Development of a Detector System for Detection of Thermal Neutrons from Spent Nuclear Fuel

   Master-uppsats, Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

   Författare :Daniel Söderström; [2016]
   Nyckelord :neutron detection; neutron; 10B; boron-10; nuclear physics; boron; neutron detector; scintillator; boron carbide; B4C; nuclear fuel; repository; SKB; Physics and Astronomy; Technology and Engineering;

   Sammanfattning : The nuclear reaction 10B(n,alpha)7Li* was utilised to develop a neutron detection system. This system has the purpose of being used to detect the thermal neutron radiation emitted by spent nuclear fuel, before it is transported to a final repository. LÄS MER