Author: Anthony EzeribePublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Towards a Massive Directional Dark Matter Detector, CYGNUS-TPC.
Author: Anthony EzeribeTowards CYGNUS
Author: W. A. Lynch4th Workshop on Directional Detection of Dark Matter (CYGNUS 2013)
Author: CYGNUS 2011
Author: Cygnus on Directional Detection of Dark Matter (3 : 2011 : Aussois)Publisher:
ISBN: 9782759807215
Category : Astrophysics
Languages : en
Pages : 184
Book Description
Developments Towards a Scaled-up One-dimensional Directional Dark Matter Detector
Author: Andrew ScarffPhase Space Distribution and Directional Direct Detection of Dark Matter Weakly Interacting Massive Particles
Author: Moqbil Salem T. AlenaziPublisher:
ISBN:
Category : Dark matter (Astronomy)
Languages : en
Pages : 226
Book Description
Detector Development for Direction-sensitive Dark Matter Research
Author: Hidefumi TomitaPublisher:
ISBN:
Category :
Languages : en
Pages : 384
Book Description
Abstract: The existence of Dark Matter was first proposed by Fritz Zwicky in 1933, based on the observed velocity distribution of galaxies in the Coma Cluster. Subsequent studies of visible mass and velocity distributions in other galaxies have confirmed Zwicky's original observation; there is now little doubt that Dark Matter exists. However, due to the fact that Dark Matter interacts very weakly through non-gravitational forces, nothing is known about the nature of Dark Matter. It is believed that Dark Matter particles are streaming toward the Earth, in the Earth's rest frame, from the direction of the constellation Cygnus. Observation of this so-called Dark Matter 'wind' with a direction-sensitive dark matter particle detector would be compelling evidence that Dark Matter does consist of a gas of discrete particles as a new form of matter. The DMTPC collaboration is developing such a detector, and this thesis describes R&D work in support of that project. The DMTPC technique for looking for Dark Matter relies on Dark Matter particles interacting with atomic nuclei, causing the nuclei to recoil and to leave optical signals that can be detected. Since neutrons are electrically neutral and collide with nuclei, they can mimic Dark Matter signals. Therefore, the reduction of neutron background is critical to the successful detection and identification of Dark Matter particles. One important aspect of this thesis is to fully understand and quantify neutron interactions with our detector. In addition to providing information for understanding Dark Matter experiments, this work also allows us to understand how our device can be used as a neutron detector. We have been able to measure a number of neutron events in a variety of experimental runs both with and without neutron sources such as a neutron generator and 252 Cf. From these runs, we have obtained data for both elastic and inelastic interactions of neutrons of various energy ranges with detector gas nuclei. In this thesis, I will also discuss our current background data taking for the Dark Matter research and our plan for scaling up the detector to 100 m 3 for a competitive Dark Matter search.
First Results from a Twenty-liter Prototype Dark Matter Detector with Directional Sensitivity
Author: Jeremy Paul LopezPublisher:
ISBN:
Category :
Languages : en
Pages : 199
Book Description
Astronomical and cosmological evidence suggests that 27% of the energy content of the universe is in the form of non-baryonic matter referred to as "dark matter." Weakly interacting massive particles have long been considered attractive candidates for this dark matter and can be found in a wide variety of models of physics beyond the Standard Model. The Dark Matter Time Projection Chamber experiment uses low-pressure gas time projection chambers to search for nuclear recoils caused by interactions between nuclei inside a detector and weakly interacting massive particles in the dark matter halo of the Milky Way galaxy. These detectors are also able to reconstruct the directions of these nuclear recoils, allowing for better rejection of possible background events. This thesis describes the design of a small prototype detector and the strategies used by the DMTPC collaboration to reconstruct events, reject backgrounds, and identify nuclear recoil candidate events. It presents the results of several studies aimed at understanding background events in DMTPC detectors. Finally, this work will present the first results from a nuclear recoil search taken with this detector in a surface laboratory at MIT.
Directional Dark Matter Searches
Author: Chamkaur GhagPublisher: LAP Lambert Academic Publishing
ISBN: 9783843380607
Category :
Languages : en
Pages : 272
Book Description
Cold Dark Matter is believed to constitute almost a quarter of the Universe, most likely in the form of Weakly Interacting Massive Particles (WIMPs), predicted by supersymmetry. This thesis describes the simulation methods, analysis techniques, and results for the calibration of the DRIFT-IIA directional dark matter detector. This is the first module in an array of gas time projection chambers capable of searching for WIMPs with directional sensitivity, located in the Boulby mine. Future operation, development and expansion of the DRIFT-II array will lead to increased potential for directional dark matter detection.
Author: Stephen Sadler