Sökning: "proton imaging"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden proton imaging.

  1. 1. Improving proton therapy planning with photon-counting spectral computed tomography

    Master-uppsats, KTH/Fysik

    Författare :Karin Larsson; [2023]
    Nyckelord :Proton therapy; Medical imaging; Computed Tomography; Protonterapi; Medicinsk avbildning; Datortomografi;

    Sammanfattning : Proton radiation therapy is an alternative to conventional photon radiation therapy, which accounts for the majority of radiation treatments today. The rationale for using protons in radiation therapy lies in their dose deposition properties; photons deposit a radiation dose inversely proportional to the energy, and therefore tissue depth, while protons exhibit a sharp Bragg peak when traversing matter. LÄS MER

  3. 2. Optimization and Characterization of Luminescent Materials for the ESS Proton Beam Imaging System

    M1-uppsats, Lunds universitet/Centrum för analys och syntes

    Författare :Emelie Wiklund; Anton Järild; [2021]
    Nyckelord :Chemical Engineering; Luminescent materials; Cr-doped Alumina; Proton Beam Imaging System; ESS; Chemistry; Technology and Engineering;

    Sammanfattning : Spallation sources such as European Spallation Source (ESS) produces neutrons by bombarding high-energy protons onto the target wheel. To determine the location of the proton beam a Proton Beam Imaging (PBI) system will be installed. LÄS MER

  4. 3. Single Photon Imaging System for the ESS Linac

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Maria Hoflund; [2019]
    Nyckelord :Imaging; European Spallation Source; Single Photon Detection; Beam Diagnostics; Non-invasive Profile Monitor; Fluorescence Profile Monitor; Technology and Engineering;

    Sammanfattning : To control an accelerating proton beam that travels close to the speed of light, a large number of beam diagnostic instruments are needed. One of the instruments that will be used at the accelerator of the European Spallation Source is a Non-invasive Profile Monitor (NPM). LÄS MER

  5. 4. Studies on Radiation-induced Defects in InP/InAsP Nanowire-based Quantum Disc-in wire Photodetectors

    Magister-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Ebrahim Mansouri; [2018]
    Nyckelord :InP InAsP; QDiscs-in-wire; photodetectors; proton irradiation; Photocurrent; I-V characteristics;

    Sammanfattning : Photodetectors are used in many applications such as digital and thermal cameras or in solar panels. They can also be designed to detect the omnipresent high-energy radiation/particles, and for radiation imaging in biomedical applications. LÄS MER

  7. 5. Development and Evaluation of a Tomographic Technique for Volumetric Imaging of Flames

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

    Författare :David Sanned; [2018]
    Nyckelord :3D-Tomography; Additive Reconstruction Technique; Space Carving; Machine Vision Cameras; Imaging of Flame Models; Technology and Engineering; Physics and Astronomy;

    Sammanfattning : With modern day interest to continue the reduction of harmful emissions and improve the efficiency of combustion devices, the need to further improve upon accuracy and ability to describe combustive processes is of high value. Nowadays, multiple capable point (0D) and two-dimensional measurement (2D) techniques exist for flame investigation, however as combustion nearly always is a three-dimensional (3D) process some limitations do exist within many of these techniques. LÄS MER