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Development Of The Customized Radon Detector And Studies Of The Radon Background Onsite For The Daya Bay Reactor Neutrino Experiment
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Book Synopsis Development of the Customized Radon Detector and Studies of the Radon Background Onsite for the Daya Bay Reactor Neutrino Experiment by : Kar-Yee Leung
Download or read book Development of the Customized Radon Detector and Studies of the Radon Background Onsite for the Daya Bay Reactor Neutrino Experiment written by Kar-Yee Leung and published by Open Dissertation Press. This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Development of the Customized Radon Detector and Studies of the Radon Background Onsite for the Daya Bay Reactor Neutrino Experiment" by Kar-yee, Leung, 梁嘉怡, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: The goal of the Daya Bay Reactor Neutrino Experiment is to determine the last unknown neutrino mixing angle θ13, in sin22θ13 to sensitivity better than 0.01 at 90% confidential level in three years of running. In order to reach the goal, background from natural radiation should be controlled less than 50 Hz, accordingly radon, which is a naturally-occurring radioactive gas, is one of the factors need to be monitored. A High-sensitivity and High-reliability Hong Kong (H3) radon monitoring system is developed to support the slow control system of the experiment. It achieves the sensitivity requirement and fulfills the data acquisition specification by using an enlarged sample chamber, an improved electronic and a designed software, in addition to the dehumidifier system for long term use. Four final products of the radon detector were well calibrated and tested before application; the sensitivities of counted progenies Po-218 and Po-214 are 3.65 0.37 x10-2 cpm/Bq-m3 (C.F.is 27.42.7 Bq/m3/cpm) and 3.94 0.40 x10-2 cpm/Bq-m3 (C.F. is 25.42.5 Bq/m3/cpm). Its performance is the highest among the same type of commercial available products. This radon monitoring system has been successfully taking data as the background measurement of the experiment for more than half a year, and will continue to provide useful information for the following several years. From the results, the radon levels in the air in Experimental Halls and in the water of water systems were higher than expected, but still at the acceptable levels. Further works have to be done to control them at preferred levels. DOI: 10.5353/th_b5053415 Subjects: Radon measures
Book Synopsis Development of the Customized Radon Detector and Studies of the Radon Background Onsite for the Daya Bay Reactor Neutrino Experiment by : Kar-Yee Leung
Download or read book Development of the Customized Radon Detector and Studies of the Radon Background Onsite for the Daya Bay Reactor Neutrino Experiment written by Kar-Yee Leung and published by Open Dissertation Press. This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Development of the Customized Radon Detector and Studies of the Radon Background Onsite for the Daya Bay Reactor Neutrino Experiment" by Kar-yee, Leung, 梁嘉怡, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: The goal of the Daya Bay Reactor Neutrino Experiment is to determine the last unknown neutrino mixing angle θ13, in sin22θ13 to sensitivity better than 0.01 at 90% confidential level in three years of running. In order to reach the goal, background from natural radiation should be controlled less than 50 Hz, accordingly radon, which is a naturally-occurring radioactive gas, is one of the factors need to be monitored. A High-sensitivity and High-reliability Hong Kong (H3) radon monitoring system is developed to support the slow control system of the experiment. It achieves the sensitivity requirement and fulfills the data acquisition specification by using an enlarged sample chamber, an improved electronic and a designed software, in addition to the dehumidifier system for long term use. Four final products of the radon detector were well calibrated and tested before application; the sensitivities of counted progenies Po-218 and Po-214 are 3.65 0.37 x10-2 cpm/Bq-m3 (C.F.is 27.42.7 Bq/m3/cpm) and 3.94 0.40 x10-2 cpm/Bq-m3 (C.F. is 25.42.5 Bq/m3/cpm). Its performance is the highest among the same type of commercial available products. This radon monitoring system has been successfully taking data as the background measurement of the experiment for more than half a year, and will continue to provide useful information for the following several years. From the results, the radon levels in the air in Experimental Halls and in the water of water systems were higher than expected, but still at the acceptable levels. Further works have to be done to control them at preferred levels. DOI: 10.5353/th_b5053415 Subjects: Radon measures
Book Synopsis Development of the Customized Radon Detector and Studies of the Radon Background Onsite for the Daya Bay Reactor Neutrino Experiment by : Kar-yee Leung (M. Phil.)
Download or read book Development of the Customized Radon Detector and Studies of the Radon Background Onsite for the Daya Bay Reactor Neutrino Experiment written by Kar-yee Leung (M. Phil.) and published by . This book was released on 2013 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of the Customized Radon Detector and Studies of the Radon Background Onsite for the Daya Bay Reactor Neutrino Experiment by : Kar-yee Leung (M. Phil.)
Download or read book Development of the Customized Radon Detector and Studies of the Radon Background Onsite for the Daya Bay Reactor Neutrino Experiment written by Kar-yee Leung (M. Phil.) and published by . This book was released on 2013 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of a Portable Radon Detector by : H. L. Gibbs
Download or read book Development of a Portable Radon Detector written by H. L. Gibbs and published by . This book was released on 1973 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. Senate. Committee on Energy and Natural Resources Publisher : ISBN 13 : Total Pages :134 pages Book Rating :4.0/5 (17 download)
Book Synopsis Scientific and Technical Basis for Radon Policy by : United States. Congress. Senate. Committee on Energy and Natural Resources
Download or read book Scientific and Technical Basis for Radon Policy written by United States. Congress. Senate. Committee on Energy and Natural Resources and published by . This book was released on 1994 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Distributed to some depository libraries in microfiche.
Book Synopsis Conceptual Study of a Calibrated Radon Source and a Portable Radon Detector by : Aamer Bashir
Download or read book Conceptual Study of a Calibrated Radon Source and a Portable Radon Detector written by Aamer Bashir and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accurate assessment of radon concentration in indoor air can determine whether the environment poses a lung cancer risk. A radon calibration system is being developed and studied that dispenses custom and reproducible activities of radon from a radon generator source into a vessel for sensor testing and calibration. There are two methods by which radon can be dispensed into the vessel. The flow-through method allows for radon to be pumped at a constant activity and flow rate through the chamber, with concentrations ranging from 1.7 pCi/l to 34 pCi/l. The vacuum method injects a predefined concentration of radon into the chamber, starting from 85 pCi/l. Both methods have their advantages and disadvantages. To accurately detect alpha particles emitted by radon and its progeny, a portable alpha particle detector using a silicon PIN photodiode is being developed. The current lab system setup using a $10 Hamamatsu photodiode yields a 1.82% channel resolution using polonium-210 as an alpha source. A detector with sufficient energy resolution is needed to resolve individual alpha peaks in an energy spectrum produced by various radionuclides present in air. Background radiation experiments have shown that the detector exhibits an excellent signal-to-noise ratio. Lab counting experiments have shown the experimental activity is in reasonable agreement with the calculated radiation incident on the photodiode. Current circuit development includes a charge sensitive preamplifier, and the remaining goal is to add a pulse counting chain to complete the circuit and the portable alpha particle counter. In the future, it is planned to extensively calibrate the alpha particle detector with the radon calibration system.
Book Synopsis Radon Measurements by Etched Track Detectors by : S. A. Durrani
Download or read book Radon Measurements by Etched Track Detectors written by S. A. Durrani and published by World Scientific. This book was released on 1997 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exposure to radon gas, which is present in the environment naturally, constitutes over half the radiation dose received by the general public annually. At present, the most widely used method of measuring radon concentration levels throughout the world, both in dwellings and in the field, is by etched track detectors ? also known as Solid State Nuclear Detectors (SSNTDs). Although this is not only the most widely used method but is also the simplest and the cheapest, yet there is at present no book available on the market globally, devoted exclusively or largely to the methodology of, and dealing with the results obtained by, the SSNTD technique. The present book fills this important gap in the coverage of radon measurements. Individual chapters of the book are contributed by some of the most prominent and active research workers in the world in the SSNTD discipline as well as in the field of radon measurements. A detailed breakdown of the contents of the book is shown below together with the name(s) of the author(s) of each chapter.
Book Synopsis Development of a High Sensitivity Radon Emanation Detector by : Stephen Robert Hanchurak
Download or read book Development of a High Sensitivity Radon Emanation Detector written by Stephen Robert Hanchurak and published by . This book was released on 2014 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Within the last few decades, experiments in particle physics have developed a need to produce radio-pure experiments. These experiments are designed to search for new physics that involves low event rates. Due to the event rates as low as 1 event/kt/year, these experiment must take precautions that reduce background radiation in the detector. A significant source of background radiation comes from radon-222 produced from the uranium decay chain. Radon-222 is gaseous and can be emanated from the surface of materials and propagate throughout a detector contaminating the experiment. Measuring the emanation rate of radon from materials has become an important area of study to enable the construction of low background environments. This thesis will present the ongoing development and analysis of a high sensitivity radon detector at the University of Alberta with a sensitivity of $4 \pm 2$ radons/hr at 68\% confidence.
Book Synopsis Development of a Portable Radon Detection System by : J. W. Allen
Download or read book Development of a Portable Radon Detection System written by J. W. Allen and published by . This book was released on 1976 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Radon Monitoring In Radioprotection, Environmental And/or Earth Sciences - Proceedings Of The Second Workshop by : Giuseppe Furlan
Download or read book Radon Monitoring In Radioprotection, Environmental And/or Earth Sciences - Proceedings Of The Second Workshop written by Giuseppe Furlan and published by World Scientific. This book was released on 1993-02-04 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings, the 1990 International Symposium on Radon and Radon Reduction Technology: (Sessions 5-9) by :
Download or read book Proceedings, the 1990 International Symposium on Radon and Radon Reduction Technology: (Sessions 5-9) written by and published by . This book was released on 1991 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :José Luis Gutiérrez-Villanueva Publisher :Ed. Universidad de Cantabria ISBN 13 :8486116910 Total Pages :40 pages Book Rating :4.4/5 (861 download)
Book Synopsis Inter-Laboratory Comparison on Indoor Radon Measurements under Field Conditions by : José Luis Gutiérrez-Villanueva
Download or read book Inter-Laboratory Comparison on Indoor Radon Measurements under Field Conditions written by José Luis Gutiérrez-Villanueva and published by Ed. Universidad de Cantabria. This book was released on 2015-04-30 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Radon Group from the University of Cantabria in Spain organized, in old uranium mine, a new inter-laboratory performance exercise to measure radon indoors exposure and external gamma radiation, with changing parameters of temperature, pressure and humidity. In this book are shown the results of the inter-comparison as well as discussions of the achieved results in which were involved 41 laboratories from different European countries.
Book Synopsis Radon Observations at Wellington by : Russell Robinson
Download or read book Radon Observations at Wellington written by Russell Robinson and published by . This book was released on 1994 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Radon and Radon Daughters in Air by : National Council on Radiation Protection and Measurements
Download or read book Measurement of Radon and Radon Daughters in Air written by National Council on Radiation Protection and Measurements and published by Ncrp. This book was released on 1988 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design and Development of a Detector to Measure Integrated Radon Concentrations by : Carlos Antonio De Leers Costa-Ribeiro
Download or read book Design and Development of a Detector to Measure Integrated Radon Concentrations written by Carlos Antonio De Leers Costa-Ribeiro and published by . This book was released on 1973 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of a Multichamber Passive Radon Detector by : Sarah Grimley
Download or read book Development of a Multichamber Passive Radon Detector written by Sarah Grimley and published by . This book was released on 1992 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt:
