Essays about: "ray tubes"

Showing result 1 - 5 of 9 essays containing the words ray tubes.

  1. 1. PERFORMANCE OF THE PHOTODETECTOR FOR THE ACTIVE SHIELD OF THE COSI SPACE TELESCOPE

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Daniel Álvarez Franco; [2022]
    Keywords : Geant4; scintillation; BGO; CsI; simulation; COSI; telescope; photoelectric effect;

    Abstract : The COmpton Spectrometer and Imager (COSI) is a space telescope that aims to study the soft gamma regime (0.2-5 MeV), capable of performing spectroscopy, imaging and polarimetry of cosmic gamma sources. READ MORE

  3. 2. Polymerized Tubular Silicates in Lower Cambrian Carbonates – Biology or Chemistry?

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Scott Green; [2022]
    Keywords : biosignature; tubular structures; Lower Cambrian; silica precipitation; bifurcating; biosignatur; rörstrukturer; Kambrium Serie 3; kiseldioxid utfällning; förgrening;

    Abstract : Shallow marine environments from the Lower Cambrian period were very different to shallow marine environments of today. Tubes of what was thought to be silica recovered from a partly dolomitized carbonate sample collected form a site near Indian Springs, Nevada could help further understand the chemistry and characteristics of such environments. READ MORE

  4. 3. Study of Environmental Effects on Photo-MultiplierTubes for the X-ray Polarimetry Mission XL-Calibur

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Jonathan Karlsson; Sebastian Alveteg; [2021]
    Keywords : ;

    Abstract : XL-Calibur is a balloon-borne hard X-ray polarimetry mission with goals to analyze celestial objects too small and distant to be imaged. A crucial part of XL-Calibur is the anti-coincidence shield which through active collimation reduces unwanted hits when gathering data. READ MORE

  5. 4. Investigation of Near-Field Contribution in SBR for Installed Antenna Performance

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Harald Hultin; [2019]
    Keywords : Shooting and Bouncing Rays; Geometrical Optics GO ; Physical Optics PO ; antenna modeling; computational electromagnetics CEM ; CST; dipole; ray tubes; Geometrisk Optik; Fysikalisk Optik; antennmodellering; elektromagnetism; CST; dipol;

    Abstract : To investigate near-eld contributions for installed antennas, an in-house code iswritten to incorporate near-eld terms in Shooting and Bouncing Rays (SBR). SBRis a method where rays are launched toward an object and scatter using GeometricalOptics (GO). These rays induce currents on the object, from which the totalscattered eld can be found. READ MORE

  6. 5. What drives resistance to innovation amongst device makers in the medical radiographic industry? A qualitative case study investigating the use of microfocus X-ray tubes and the barriers to a widespread usage in the medical radiography

    University essay from Göteborgs universitet/Graduate School

    Author : Erik Rudenstam; Victor Tennby; [2018-08-02]
    Keywords : ;

    Abstract : In academia, literature on innovation have over the last few decades predominantly focused on what strategies can help drive acceptance of new innovative products and services. However, the arguably quite high failure rate for market introductions of innovative products indicates that academia and innovative companies should increase the focus on understanding the challenges and pitfalls that could potentially affect the market introduction’s degree of success. READ MORE