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The Cryogenic Infrastructure Of The Xenon1t Dark Matter Experiment
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Book Synopsis The Cryogenic Infrastructure of the XENON1T Dark Matter Experiment by : Yun Zhang
Download or read book The Cryogenic Infrastructure of the XENON1T Dark Matter Experiment written by Yun Zhang and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: I first give an instrument overview of the systems in XENON1T. I then review the cooling methods in LXe detectors which led to the design of the cooling system implemented in the XENON1T experiment, and suggest a design of the cooling system for future LXe dark matter experiments at the 50 tons scale. I describe and discuss in detail the design and the performance of the XENON1T Cryogenic Infrastructure. Finally, I describe the detector stability and the corresponding data selection in all three XENON1T science runs, and describe the dark matter search results from the one ton-year exposure.
Book Synopsis Research and Development of the Purification and Cryogenic Systems for the XENON1T Dark Matter Experiment by : Hugo Alejandro Contreras Palacios
Download or read book Research and Development of the Purification and Cryogenic Systems for the XENON1T Dark Matter Experiment written by Hugo Alejandro Contreras Palacios and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The testing of the system was performed at Nevis where the various components were assembled and leak checked before being shipped to LNGS. The XENON1T detector’s cryostat and its cryogenics system, designed by the Columbia University XENON group were installed underground in the Hall B of the LNGS laboratory in Summer/Fall 2014. Their commissioning represent a major milestone in the realization of XENON1T. The last chapter of the thesis summarizes the status of XENON1T, with particular focus on the design of the cryogenic, purification and cryostat system influenced by the R & D with the Demonstrator.
Book Synopsis Intrinsic Background Reduction by Cryogenic Distillation for the XENON1T Dark Matter Experiment by : Michael Murra
Download or read book Intrinsic Background Reduction by Cryogenic Distillation for the XENON1T Dark Matter Experiment written by Michael Murra and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis First Results from the Cryogenic Dark Matter Search Experiment at the Deep Site by : Vuk Mandic
Download or read book First Results from the Cryogenic Dark Matter Search Experiment at the Deep Site written by Vuk Mandic and published by . This book was released on 2004 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Cryogenic Dark Matter Search (CDMS-II) Experiment - First Results from the Soudan Mine by : Clarence Leeder Chang
Download or read book The Cryogenic Dark Matter Search (CDMS-II) Experiment - First Results from the Soudan Mine written by Clarence Leeder Chang and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis CRESST - a Cryogenic Experiment for Dark Matter Search by : Monica Sisti
Download or read book CRESST - a Cryogenic Experiment for Dark Matter Search written by Monica Sisti and published by . This book was released on 1999 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Searching for dark matter with the Cryogenic Dark Matter Search experiment by : Sebastian Arrenberg
Download or read book Searching for dark matter with the Cryogenic Dark Matter Search experiment written by Sebastian Arrenberg and published by . This book was released on 2011 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Background Simulations for a Large-scale Cryogenic Dark Matter Experiment by : Vito Tomasello
Download or read book Background Simulations for a Large-scale Cryogenic Dark Matter Experiment written by Vito Tomasello and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Weakly Interacting Massive Particles with the Cryogenic Dark Matter Search Experiment by : Tarek Saab
Download or read book Search for Weakly Interacting Massive Particles with the Cryogenic Dark Matter Search Experiment written by Tarek Saab and published by . This book was released on 2002 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis First Results from the Cryogenic Dark Matter Search Experiment at the Deep Site by :
Download or read book First Results from the Cryogenic Dark Matter Search Experiment at the Deep Site written by and published by . This book was released on 2004 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cryogenic Dark Matter Search (CDMS) experiment is designed to search for dark matter in the form of the Weakly Interacting Massive Particles (WIMPs). For this purpose, CDMS uses detectors based on crystals of Ge and Si, operated at the temperature of 20 mK, and providing a two-fold signature of an interaction: the ionization and the athermal phonon signals. The two signals, along with the passive and active shielding of the experimental setup, and with the underground experimental sites, allow very effective suppression and rejection of different types of backgrounds. This dissertation presents the commissioning and the results of the first WIMP-search run performed by the CDMS collaboration at the deep underground site at the Soudan mine in Minnesota. We develop different methods of suppressing the dominant background due to the electron-recoil events taking place at the detector surface and we apply these algorithms to the data set. These results place the world's most sensitive limits on the WIMP-nucleon spin-independent elastic-scattering cross-section. Finally, they examine the compatibility of the supersymmetric WIMP-models with the direct-detection experiments (such as CDMS) and discuss the implications of the new CDMS result on these models.
Book Synopsis A Search for Weakly Interacting Particles with the Cryogenic Dark Matter Search Experiment by : Tobias Bruch
Download or read book A Search for Weakly Interacting Particles with the Cryogenic Dark Matter Search Experiment written by Tobias Bruch and published by . This book was released on 2010 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pulse Fitting and Energy Resolution in the Cryogenic Dark Matter Search Experiment by : Peter Brooks
Download or read book Pulse Fitting and Energy Resolution in the Cryogenic Dark Matter Search Experiment written by Peter Brooks and published by . This book was released on 2007 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis First Dark Matter Search Results from the XENON1T Experiment by : Elena Aprile
Download or read book First Dark Matter Search Results from the XENON1T Experiment written by Elena Aprile and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Safety and Security Engineering VI by : C.A. Brebbia
Download or read book Safety and Security Engineering VI written by C.A. Brebbia and published by WIT Press. This book was released on 2015-05-06 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the proceedings of the sixth in a series of interdisciplinary conferences on safety and security engineering. The papers from the biennial conference, first held in 2005, include the work of engineers, scientists, field researchers, managers and other specialists involved in one or more aspects of safety and security. The papers presented cover areas such as: Risk Analysis; Assessment and Management; System Safety Engineering; Incident Management; Information and Communication Security; Natural Disaster Management; Emergency Response; Critical Infrastructure Protection; Public Safety and Security; Human Factors; Transportation Safety and Security; Modelling and Experiments; Security Surveillance Systems.
Book Synopsis The Cryogenic Dark Matter Search Low Ionization-threshold Experiment by :
Download or read book The Cryogenic Dark Matter Search Low Ionization-threshold Experiment written by and published by . This book was released on 2014 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 80 years ago we discovered the presence of Dark Matter in our universe. Endeavors in astronomy and cosmology are in consensus with ever improving precision that Dark Matter constitutes an essential 27% of our universe. The Standard Model of Particle Physics does not provide any answers to the Dark Matter problem. It is imperative that we understand Dark Matter and discover its fundamental nature. This is because, alongside other important factors, Dark Matter is responsible for formation of structure in our universe. The very construct in which we sit is defined by its abundance. The Milky Way galaxy, hence life, wouldn't have formed if small over densities of Dark Matter had not caused sufficient accretion of stellar material. Marvelous experiments have been designed based on basic notions to directly and in-directly study Dark Matter, and the Cryogenic Dark Matter Search (CDMS) experiment has been a pioneer and forerunner in the direct detection field. Generations of the CDMS experiment were designed with advanced scientific upgrades to detect Dark Matter particles of mass O(100) GeV/c2. This mass-scale was set primarily by predictions from Super Symmetry. Around 2013 the canonical SUSY predictions were losing some ground and several observations (rather hints of signals) from various experiments indicated to the possibility of lighter Dark Matter of mass O(10) GeV/c2. While the SuperCDMS experiment was probing the regular parameter space, the CDMSlite experiment was conceived to dedicatedly search for light Dark Matter using a novel technology. "CDMSlite" stands for CDMS - low ionization threshold experiment. Here we utilize a unique electron phonon coupling mechanism to measure ionization generated by scattering of light particles. Typically signals from such low energy recoils would be washed under instrumental noise. In CDMSlite via generation of Luke-Neganov phonons we can detect the small ionization energies, amplified in phonon modes during charge transport. This technology allows us to reach very low thresholds and reliably measure and investigate low energy recoils from light Dark Matter particles. This thesis describes the physics behind CDMSlite, the experimental design and the first science results from CDMSlite operated at the Soudan Underground Laboratory.
Book Synopsis A Low-Threshold Analysis of Data from the Cryogenic Dark Matter Search Experiment by :
Download or read book A Low-Threshold Analysis of Data from the Cryogenic Dark Matter Search Experiment written by and published by . This book was released on 2011 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although dark matter appears to constitute over 80% of the matter in the Universe, its composition is a mystery. Astrophysical observations suggest that the luminous portions of the Galaxy are embedded in a halo of darkmatter particles. Weakly Interacting Massive Particles (WIMPs) are the most studied class of dark-matter candidates and arise naturally within the context of many weak-scale supersymmetric theories. Direct-detection experiments like the Cryogenic Dark Matter Search (CDMS) strive to discern the kinetic energy of recoiling nuclei resulting from WIMP interactions with terrestrial matter. This is a considerable challenge in which the low (expected) rate of WIMP interactions must be distinguished from an overwhelming rate due to known types of radiation. An incontrovertible positive detection has remained elusive. However, a few experiments have recorded data that appear consistent with a low-mass WIMP. This thesis describes an attempt to probe the favored parameter space. To increase sensitivity to low-mass WIMPs, a low-threshold technique with improved sensitivity to small energy depositions is applied to CDMS shallowsite data. Four germanium and two silicon detectors were operated between December 2001 and June 2002, yielding 118 days of exposure. By sacrificing some of the CDMS detectors' ability to discriminate signal from background, energy thresholds of ~1 and ~2 keV were achieved for three of the germanium and both silicon detectors, respectively. A large number of WIMP candidate events are observed, most of which can be accounted for by misidentification of background sources. No conclusive evidence for a low-mass WIMP signal is found. The observed event rates are used to set upper limits on the WIMPnucleon scattering cross section as a function of WIMP mass. Interesting parameter space is excluded for WIMPs with masses below ~9GeV/c2. Under standard assumptions, the parameter space favored by interpretations of other experiments' data as low-mass WIMP signals is partially excluded, and new parameter space is excluded for WIMP masses between 3 and 4GeV/c2.
Book Synopsis The Cryogenic Dark Matter Search and Background Rejection with Event Position Information by :
Download or read book The Cryogenic Dark Matter Search and Background Rejection with Event Position Information written by and published by . This book was released on 2005 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evidence from observational cosmology and astrophysics indicates that about one third of the universe is matter, but that the known baryonic matter only contributes to the universe at 4%. A large fraction of the universe is cold and non-baryonic matter, which has important role in the universe structure formation and its evolution. The leading candidate for the non-baryonic dark matter is Weakly Interacting Massive Particles (WIMPs), which naturally occurs in the supersymmetry theory in particle physics. The Cryogenic Dark Matter Search (CDMS) experiment is searching for evidence of a WIMP interaction off an atomic nucleus in crystals of Ge and Si by measuring simultaneously the phonon energy and ionization energy of the interaction in the CDMS detectors. The WIMP interaction energy is from a few keV to tens of keV with a rate less than 0.1 events/kg/day. To reach the goal of WIMP detection, the CDMS experiment has been conducted in the Soudan mine with an active muon veto and multistage passive background shields. The CDMS detectors have a low energy threshold and background rejection capabilities based on ionization yield. However, betas from contamination and other radioactive sources produce surface interactions, which have low ionization yield, comparable to that of bulk nuclear interactions. The low-ionization surface electron recoils must be removed in the WIMP search data analysis. An emphasis of this thesis is on developing the method of the surface-interaction rejection using location information of the interactions, phonon energy distributions and phonon timing parameters. The result of the CDMS Soudan run118 92.3 live day WIMP search data analysis is presented, and represents the most sensitive search yet performed.
