Author: "Jodi Cooley" - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"Jodi Cooley"' showing total 88 results

Start Over Author "Jodi Cooley"

88 results on '"Jodi Cooley"'

1. Dark Matter direct detection of classical WIMPs

Author: Jodi Cooley
Subjects: Physics, QC1-999
Abstract: One of the highest priorities in particle physics today is the identification of the constituents of dark matter. This manuscript is a supplement to pedagogical lectures given at the 2021 Les Houches Summer School on Dark Matter. The lectures cover topics related to the direct detection of WIMP dark matter, including the distribution of dark matter, nuclear scattering, backgrounds, planning and designing of experiments, and a sampling of planned and ongoing experiments.
Published: 2022
Full Text: View/download PDF

2. Implementing an Honors Physics Add-On Course: The SMU Experience

Author: E. Godat, Stephen Sekula, and Jodi Cooley
Subjects: Science instruction, media_common.quotation_subject, ComputingMilieux_COMPUTERSANDEDUCATION, Mathematics education, General Physics and Astronomy, Creativity, Education, Course (navigation), media_common
Abstract: In this article, we outline how we implemented an honors-level add-on course to complement standard university-level introductory physics courses. We explain why it was necessary to do this. We then explain the strategies we have adopted for attracting students, engaging them, and assessing their performance. Our goal in creating this course was to provide a flexible format that would not discriminate based on experience and preparation, because such factors can be tied to sex, gender, social-economic status, and race. We also sought to empower students that are traditionally marginalized or underrepresented in large course settings by giving them a venue where they could work in a small, dynamic, and creative environment.
Published: 2020

3. Dark Matter Direct Detection of Classical WIMPs

Author: Jodi Cooley
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences, High Energy Physics - Experiment
Abstract: One of the highest priorities in particle physics today is the identification of the constituents of dark matter. This manuscript is a supplement to pedagogical lectures given at the 2021 Les Houches Summer School on Dark Matter. The lectures cover topics related to the direct detection of WIMP dark matter, including the distribution of dark matter, nuclear scattering, backgrounds, planning and designing of experiments and a sampling of planned and ongoing experiments., Submitted to SciPost Physics Lecture Notes, Les Houches Summer School Series
Published: 2021

4. Constraints on low-mass, relic dark matter candidates from a surface-operated SuperCDMS single-charge sensitive detector

Author: K. Fouts, W. Rau, D. A. Bauer, S. S. Poudel, N. Chott, M. L. di Vacri, Ruth Lawrence, Fernando Ponce, H. E. Rogers, S. Scorza, Xingbo Zhao, R. Germond, John Wilson, Bruno Serfass, M. H. Kelsey, A. N. Villano, S. M. Oser, C. Stanford, E. Lopez Asamar, A. Sattari, Matthew Fritts, A. J. Mayer, Vuk Mandic, I. J. Arnquist, B. A. Hines, N. Herbert, M. Michaud, H. R. Harris, Tarek Saab, N. Mast, P. Cushman, D. Barker, H. G. Zhang, L. Zheng, E. Zhang, Douglas Wright, Sunil Golwala, Seema Verma, M. Stein, T. Reynolds, To Chin Yu, Betty A. Young, R. A. Cameron, John L. Orrell, D. MacDonell, L. Hsu, Yu Kai Chang, S. L. Watkins, Martin E. Huber, D. Toback, Jodi Cooley, C. Cartaro, P. Pakarha, N. Mirabolfathi, Bedangadas Mohanty, Amy Roberts, A. Li, J. D. Morales Mendoza, M. A. Bowles, R. Chen, D. Jardin, D. W. P. Amaral, B. von Krosigk, A. Jastram, C. W. Fink, Matt Pyle, S. Nagorny, E. Fascione, R. Underwood, H. Coombes, T. Aralis, R. W. Schnee, D. B. MacFarlane, E. Azadbakht, T. Binder, David G. Cerdeño, Ben Loer, Blas Cabrera, R. Mahapatra, R. Calkins, J. Corbett, R. Bhattacharyya, Noah Kurinsky, E. Michielin, J. Winchell, J. K. Nelson, L. Wills, S. J. Yellin, Tsuguo Aramaki, L. V. S. Bezerra, W. A. Page, M. I. Hollister, J. Sander, D. J. Sincavage, M. Ghaith, F. De Brienne, G. Gerbier, R. Bunker, J. Street, E. Reid, Enectali Figueroa-Feliciano, R. Ren, A. Kubik, P. L. Brink, Bernard Sadoulet, A. E. Robinson, V. Iyer, R. Podviianiuk, R. Partridge, P. Lukens, M. Diamond, Ziqing Hong, M. J. Wilson, V. Novati, S. Banik, Eric W. Hoppe, H. Neog, and C. Bathurst
Subjects: Coupling constant, Physics, Physics - Instrumentation and Detectors, Cosmology and Nongalactic Astrophysics (astro-ph.CO), 010308 nuclear & particles physics, Dark matter, FOS: Physical sciences, Charge (physics), Instrumentation and Detectors (physics.ins-det), Electron, Kinetic energy, 01 natural sciences, Dark photon, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Absorption (logic), Atomic physics, 010306 general physics, Light dark matter, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: This article presents an analysis and the resulting limits on light dark matter inelastically scattering off of electrons, and on dark photon and axion-like particle absorption, using a second-generation SuperCDMS high-voltage eV-resolution detector. The 0.93 gram Si detector achieved a 3 eV phonon energy resolution; for a detector bias of 100 V, this corresponds to a charge resolution of 3% of a single electron-hole pair. The energy spectrum is reported from a blind analysis with 1.2 gram-days of exposure acquired in an above-ground laboratory. With charge carrier trapping and impact ionization effects incorporated into the dark matter signal models, the dark matter-electron cross section $\bar{\sigma}_{e}$ is constrained for dark matter masses from 0.5--$10^{4} $MeV$/c^{2}$; in the mass range from 1.2--50 eV$/c^{2}$ the dark photon kinetic mixing parameter $\varepsilon$ and the axioelectric coupling constant $g_{ae}$ are constrained. The minimum 90% confidence-level upper limits within the above mentioned mass ranges are $\bar{\sigma}_{e}\,=\,8.7\times10^{-34}$ cm$^{2}$, $\varepsilon\,=\,3.3\times10^{-14}$, and $g_{ae}\,=\,1.0\times10^{-9}$., Comment: 5 pages + title and references, 3 figures and 1 table
Published: 2020

5. Constraints on dark photons and axionlike particles from the SuperCDMS Soudan experiment

Author: É. M. Michaud, R. Mahapatra, C. W. Fink, R. Underwood, R. A. Cameron, N. Herbert, John L. Orrell, N. Mirabolfathi, D. MacDonell, Ben Loer, D. A. Bauer, S. S. Poudel, C. Cartaro, W. Baker, H. R. Harris, Fernando Ponce, Bedangadas Mohanty, A. Li, Yu Kai Chang, Betty A. Young, Amy Roberts, A. Jastram, C. Stanford, D. J. Sincavage, D. Jardin, A. N. Villano, P. Lukens, M. Diamond, Matthew Fritts, Vuk Mandic, S. M. Oser, K. Fouts, L. Zheng, J. Street, M. Stein, M. I. Hollister, John Wilson, M. E. Huber, E. Azadbakht, A. Kennedy, Ziqing Hong, Xingbo Zhao, T. Reynolds, H. Coombes, F. De Brienne, G. Gerbier, D. B. MacFarlane, Emily Z. Zhang, H. E. Rogers, J. D. Morales Mendoza, L. V. S. Bezerra, Emanuele Michielin, Blas Cabrera, M. J. Wilson, Ruth Lawrence, P. Cushman, T. Binder, Bruno Serfass, S. Banik, Eric W. Hoppe, S. J. Yellin, Tsuguo Aramaki, D. H. Wright, J. Corbett, Noah Kurinsky, H. Neog, C. Bathurst, M. A. Bowles, R. Germond, W. A. Page, Matt Pyle, W. Rau, V. Iyer, R. Podviianiuk, Kartik Senapati, M. Ghaith, Sunil Golwala, S. Nagorny, B. Cornell, E. Fascione, R. Bunker, J. K. Nelson, A. Kubik, M. L. di Vacri, A. E. Robinson, I. J. Arnquist, R. W. Schnee, L. Hsu, S. Scorza, R. Partridge, Tarek Saab, N. Mast, L. Wills, R. Bhattacharyya, D. Toback, B. von Krosigk, J. Sander, Jodi Cooley, M. H. Kelsey, David G. Cerdeño, S. L. Watkins, P. Pakarha, R. Calkins, Enectali Figueroa-Feliciano, R. Ren, D. Barker, J. Winchell, T. Aralis, Bernard Sadoulet, To Chin Yu, E. Lopez Asamar, Seema Verma, Bruce A. Hines, and P. L. Brink
Subjects: Physics, Range (particle radiation), Photon, 010308 nuclear & particles physics, Dark matter, chemistry.chemical_element, Germanium, Electron, Parameter space, Kinetic energy, 01 natural sciences, Nuclear physics, chemistry, 0103 physical sciences, Particle, 010306 general physics
Abstract: We present an analysis of electron recoils in cryogenic germanium detectors operated during the SuperCDMS Soudan experiment. The data are used to set new constraints on the axioelectric coupling of axionlike particles and the kinetic mixing parameter of dark photons, assuming the respective species constitutes all of the galactic dark matter. This study covers the mass range from 40 eV/c2 to 500 keV/c2 for both candidates, excluding previously untested parameter space for masses below ∼1 keV/c2. For the kinetic mixing of dark photons, values below 10−15 are reached for particle masses around 100 eV/c2; for the axioelectric coupling of axionlike particles, values below 10−12 are reached for particles with masses in the range of a few-hundred eV/c2.
Published: 2020

6. Evaluation and mitigation of trace $^{210}$Pb contamination on copper surfaces

Author: I. J. Arnquist, John L. Orrell, R. Calkins, Eric W. Hoppe, Tsuguo Aramaki, Raymond Bunker, Jodi Cooley, and Kimbrelle S. Thommasson
Subjects: Physics, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Spectrometer, 010308 nuclear & particles physics, Metallurgy, FOS: Physical sciences, chemistry.chemical_element, Instrumentation and Detectors (physics.ins-det), Contamination, 01 natural sciences, Copper, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), chemistry, 13. Climate action, Etching (microfabrication), Impurity, 0103 physical sciences, Emissivity, Electroplating, 010303 astronomy & astrophysics, Instrumentation, Polonium
Abstract: Clean materials are required to construct and operate many low-background physics experiments. High-purity copper has found broad use because of its physical properties and availability. In this paper, we describe methods to assay and mitigate $^{210}$Pb contamination on copper surfaces, such as from exposure to environmental radon or coming from bulk impurities. We evaluated the efficacy of wet etching on commercial samples and observed that $^{210}$Po contamination from the copper bulk does not readily pass into solution. During the etch, the polonium appears to trap at the copper-etchant boundary, such that it is effectively concentrated at the copper surface. We observed a different behavior for $^{210}$Pb; high-sensitivity measurements of the alpha emissivity versus time indicate the lowest level of $^{210}$Pb contamination ever reported for a commercial copper surface: $0\pm12$ nBq/cm$^2$ (1$\sigma$). Additionally, we have demonstrated the effectiveness of mitigating trace $^{210}$Pb and $^{210}$Po surface backgrounds using custom, high-purity electroplating techniques. These approaches were evaluated utilizing assays performed with an XIA UltraLo-1800 alpha spectrometer., Comment: Published in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Volume 967, 1 July 2020, 163870
Published: 2020

7. Light Dark Matter Search with a High-Resolution Athermal Phonon Detector Operated Above Ground

Author: E. Azadbakht, C. W. Fink, C. Cartaro, R. Mahapatra, M. A. Bowles, S. Banik, Eric W. Hoppe, H. Neog, R. A. Cameron, John L. Orrell, C. Bathurst, R. Calkins, D. A. Bauer, S. S. Poudel, D. MacDonell, V. Novati, M. H. Kelsey, M. Diamond, P. Cushman, P. Lukens, Yu Kai Chang, P. Pakarha, J. K. Nelson, Tarek Saab, N. Mast, L. Wills, J. Winchell, R. Partridge, L. V. S. Bezerra, Fernando Ponce, Ziqing Hong, H. G. Zhang, N. Herbert, H. R. Harris, P. L. Brink, D. W. P. Amaral, L. Zheng, M. J. Wilson, D. J. Sincavage, W. A. Page, Bernard Sadoulet, M. Chaudhuri, Blas Cabrera, J. Street, Martin E. Huber, A. E. Robinson, E. Lopez Asamar, N. Mirabolfathi, É. M. Michaud, Bedangadas Mohanty, A. J. Mayer, A. Li, H. Coombes, Noah Kurinsky, I. J. Arnquist, L. Hsu, J. Sander, T. C. Yu, Sunil Golwala, K. Fouts, A. Jastram, J. D. Morales Mendoza, R. W. Schnee, M. Ghaith, Amy Roberts, D. Toback, Ruth Lawrence, T. Binder, Bruno Serfass, A. Kubik, Matt Pyle, T. Aralis, J. Corbett, J. Camilleri, D. Jardin, Matthew Fritts, H. Meyer Zu Theenhausen, V. K. S. Kashyap, C. Stanford, M. I. Hollister, R. Bhattacharyya, Vuk Mandic, E. Michielin, D. H. Wright, A. Sattari, E. Reid, S. J. Yellin, Tsuguo Aramaki, Enectali Figueroa-Feliciano, R. Ren, F. De Brienne, G. Gerbier, R. Germond, I. Alkhatib, B. A. Hines, S. Zuber, Betty A. Young, Seema Verma, B. von Krosigk, Yu. G. Kolomensky, S. L. Watkins, S. Nagorny, E. Fascione, John Wilson, D. B. MacFarlane, David G. Cerdeño, R. Bunker, Emily Z. Zhang, V. Iyer, R. Chen, R. Podviianiuk, R. Underwood, Ben Loer, Jodi Cooley, A. N. Villano, S. M. Oser, Xingbo Zhao, T. Reynolds, I. Ataee Langroudy, D. Barker, M. L. di Vacri, S. Scorza, W. Rau, N. Chott, and UAM. Departamento de Física Teórica
Subjects: Physics - Instrumentation and Detectors, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Above Grounds, Phonon, Dark matter, General Physics and Astronomy, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Cryogenic Detectors, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Light Dark Matter, Scattering Cross Section, 0103 physical sciences, Energy Resolutions, Dark Matter Searches, 010306 general physics, Light dark matter, Physics, Dark Matter Particles, 010308 nuclear & particles physics, Scattering, Detector, Resolution (electron density), Física, Instrumentation and Detectors (physics.ins-det), Particle, High Energy Physics::Experiment, Energy (signal processing), Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We present limits on spin-independent dark matter-nucleon interactions using a $10.6$ $\mathrm{g}$ Si athermal phonon detector with a baseline energy resolution of $\sigma_E=3.86 \pm 0.04$ $(\mathrm{stat.})^{+0.19}_{-0.00}$ $(\mathrm{syst.})$ $\mathrm{eV}$. This exclusion analysis sets the most stringent dark matter-nucleon scattering cross-section limits achieved by a cryogenic detector for dark matter particle masses from $93$ to $140$ $\mathrm{MeV}/c^2$, with a raw exposure of $9.9$ $\mathrm{g}\cdot\mathrm{d}$ acquired at an above-ground facility. This work illustrates the scientific potential of detectors with athermal phonon sensors with eV-scale energy resolution for future dark matter searches., Comment: 7 pages, 4 figures, this version includes ancillary files from official data release
Published: 2020
Full Text: View/download PDF

8. Basic Research Needs for High Energy Physics Detector Research & Development: Report of the Office of Science Workshop on Basic Research Needs for HEP Detector Research and Development: December 11-14, 2019

Author: Bonnie Fleming, Ian Shipsey, Marcel Demarteau, James Fast, Sunil Golwala, Young-Kee Kim, Abraham Seiden, James Hirschauer, Gabriella Sciolla, Ornella Palamara, Kate Scholberg, Jodi Cooley, Dan McKinsey, Clarence Chang, Brenna Flaugher, Sarah Demers, Monica Pepe-Altarelli, Francesco Lanni, Roger Rusack, Roxanne Guenette, Jocelyn Monroe, Lindley Winslow, Peter Krizan, Andrew Geraci, Kent Irwin, Gabriella Carini, Mitch Newcomer, Marina Artuso, Carl Haber, Darin Acosta, Tulika Bose, Michael Begel, Meenakshi Narain, Daniel Dwyer, Amy Connolly, Andrew Sonnenschein, Reyco Henning, Kyle Dawson, Laura Newburgh, Matthew Reece, Nicola Serra, Nural Akchurin, Sarah Eno, Paolo Rumerio, Renyuan Zhu, Jennifer Raaf, Andrea Pocar, Jonathan Asaadi, Hugh Lippincott, Graham Giovanetti, Adriana Lita, Felix Sefkow, Gretchen Campbell, Alexander Sushkov, Ronald Walsworth, Anna Grassellino, Angelo Dragone, Maurice Garcia-Sciveres, Terri Shaw, Julia Thom-Levy, Alessandro Tricoli, Petra Merkel, Wesley Ketchum, Jinlong Zhang, Paul O'Connor, Georgia Karagiorgi, Christie Ashton, Lali Chaterjee, Peter Lee, Donald Hornback, Helmut Marsiske, Michelle Shinn, Karen Byrum, Glen Crawford, Elaine Lessner, Donna Nevels, Gulshan Rai, Kathy Turner, and Randall Ruchti
Published: 2019

9. Input comparison of radiogenic neutron estimates for ultra-low background experiments

Author: H. Qiu, K. J. Palladino, M. Selvi, Jodi Cooley, Chao Zhang, and S. Scorza
Subjects: Physics, Nuclear and High Energy Physics, Antiparticle, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, Proton decay, Dark matter, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, Cosmology, Nuclear physics, 0103 physical sciences, Neutron, Neutrino, Astrophysics - Instrumentation and Methods for Astrophysics, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Instrumentation, Event (particle physics), Spontaneous fission
Abstract: Ultra-low-background experiments address some of the most important open questions in particle physics, cosmology and astrophysics: the nature of dark matter, whether the neutrino is its own antiparticle, and does the proton decay. These rare event searches require well-understood and minimized backgrounds. Simulations are used to understand backgrounds caused by naturally occurring radioactivity in the rock and in every piece of shielding and detector material used in these experiments. Most important are processes like spontaneous fission and ( α ,n) reactions in material close to the detectors that can produce neutrons. A comparison study of the ( α ,n) reactions between two dedicated software packages is detailed. The cross section libraries, neutron yields, and spectra from the Mei–Zhang–Hime and the SOURCES-4A codes are presented. The resultant yields and spectra are used as inputs to direct dark matter detector toy models in GEANT4, to study the impact of their differences on background estimates and fits. Although differences in neutron yield calculations up to 50% were seen, there was no systematic difference between the Mei–Hime–Zhang and SOURCES-4A results. Neutron propagation simulations smooth differences in spectral shape and yield, and both tools were found to meet the broad requirements of the low-background community.
Published: 2018

10. A database for storing the results of material radiopurity measurements

Author: K. D. Nguyen, G. A. Cox, Alan Poon, Z. Li, J. C. Loach, and Jodi Cooley
Subjects: Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Data management, FOS: Physical sciences, Radiopurity, Certification, computer.software_genre, Atomic, 01 natural sciences, Database, Particle and Plasma Physics, Software, 0103 physical sciences, Nuclear, Nuclear Experiment (nucl-ex), 010306 general physics, Materials, Nuclear Experiment, Instrumentation, Physics, Radiation, 010308 nuclear & particles physics, business.industry, WIMP dark matter, Molecular, Instrumentation and Detectors (physics.ins-det), Nuclear & Particles Physics, Other Physical Sciences, Data format, Neutrinoless double-beta decay, Data compilation, business, computer, Astronomical and Space Sciences
Abstract: © 2016 Elsevier B.V. Searches for rare nuclear processes, such as neutrinoless double beta-decay and the interactions of WIMP dark matter, are motivating experiments with ever-decreasing levels of radioactive backgrounds. These background reductions are achieved using various techniques, but amongst the most important is minimizing radioactive contamination in the materials from which the experiment is constructed. To this end there have been decades of advances in material sourcing, manufacture and certification, during which researchers have accumulated many thousands of measurements of material radiopurity. Some of these assays are described in publications, others are in databases, but many are still communicated informally. Until this work, there has been no standard format for encoding assay results and no effective, central location for storing them. The aim of this work is to address these long-standing problems by creating a concise and flexible material assay data format and powerful software application to manipulate it. A public installation of this software, available at http://www.radiopurity.org, is the largest database of assay results ever compiled and is intended as a long-term repository for the community's data.
Published: 2016

11. Erratum: First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector [Phys. Rev. Lett. 121 , 051301 (2018)]

Author: Betty A. Young, C. Cartaro, A. Kennedy, A. Phipps, Blas Cabrera, Chitrasen Jena, E. Fascione, D. H. Wright, Jodi Cooley, J. V. Leyva, Noah Kurinsky, R. Mahapatra, M. H. Kelsey, W. Rau, T. Binder, C. Stanford, Xingbo Zhao, E. Azadbakht, S. Scorza, E. H. Miller, P. L. Brink, Danielle Speller, J. Street, Amy Roberts, S. J. Yellin, Tsuguo Aramaki, P. Di Stefano, A. N. Villano, Matthew Fritts, S. M. Oser, R. Calkins, B. von Krosigk, Vuk Mandic, H. E. Rogers, R. Agnese, H. R. Harris, M. A. Bowles, T. Reynolds, H. Qiu, A. E. Robinson, V. Iyer, P. Lukens, W. A. Page, C. W. Fink, J. Sander, M. Stein, Martin E. Huber, Bruno Serfass, S. L. Watkins, John Wilson, D. Barker, I. J. Arnquist, D. Jardin, D. A. Bauer, S. Banik, Eric W. Hoppe, J. K. Nelson, S. S. Poudel, W. Baker, B. Cornell, T. Doughty, Fernando Ponce, A. Reisetter, L. Hsu, Ziqing Hong, J. D. Morales Mendoza, John L. Orrell, J. So, X. Zhang, N. Mirabolfathi, D. MacDonell, R. Underwood, Bedangadas Mohanty, A. Scarff, D. Toback, Tarek Saab, N. Mast, G. Gerbier, M. J. Wilson, Ben Loer, Hiromasa Tanaka, R. K. Romani, M. Pepin, David G. Cerdeño, T. Aralis, Matt Pyle, M. Ghaith, A. Kubik, Kartik Senapati, R. Partridge, Sunil Golwala, Yen-Yung Chang, J. Winchell, Bernard Sadoulet, Enectali Figueroa-Feliciano, E. Lopez Asamar, Ruth Lawrence, R. Germond, R. Bunker, R. W. Schnee, and P. Cushman
Subjects: Nuclear physics, Physics, Detector, Dark matter, General Physics and Astronomy, Charge (physics)
Abstract: This corrects the article DOI: 10.1103/PhysRevLett.121.051301.
Published: 2019

12. Nuclear-recoil energy scale in CDMS II silicon dark-matter detectors

Author: X. Zhao, T. Binder, G.L. Godfrey, J. D. Morales Mendoza, R. Underwood, Martin E. Huber, Tarek Saab, K. Schneck, N. Mast, E. H. Miller, M. Pepin, R. Germond, Yi Chen, B. Welliver, J. Hall, A. W. Borgland, H. R. Harris, W. A. Page, Amy Roberts, Yu Kai Chang, S. Fallows, A. N. Villano, Betty A. Young, M. Ghaith, A. Kubik, R. W. Schnee, V. Iyer, S. M. Oser, R. Basu Thakur, Miguel Daal, H. A. Tanaka, S. J. Yellin, Tsuguo Aramaki, A. Phipps, Hassan Chagani, David G. Cerdeño, K. L. Page, T. Doughty, P. Lukens, S. Banik, R. Partridge, Robert A. Moffatt, Kevin A. McCarthy, John Wilson, B. Cornell, R. Calkins, E. Fascione, Sunil Golwala, P. Redl, Ziqing Hong, P. L. Brink, M. Stein, David Moore, M. Peñalver Martinez, Adam Anderson, M. J. Wilson, E. M. Dragowsky, J. K. Nelson, Donald J. Holmgren, C. Cartaro, W. Rau, David O. Caldwell, H. E. Rogers, M. A. Bowles, P. Cushman, J. Sander, S. Scorza, Danielle Speller, H. Qiu, P. Di Stefano, R. Agnese, J. Street, D. Balakishiyeva, L. Hsu, D. Toback, Matt Pyle, Bruno Serfass, Kartik Senapati, D. Jardin, R. Mahapatra, A. Leder, R. Bunker, A. Reisetter, D. MacDonell, C. Jena, G. Gerbier, L. Esteban, D. Barker, Jodi Cooley, M. H. Kelsey, D. A. Bauer, S. S. Poudel, W. Baker, J. J. Yen, Matthew Fritts, Vuk Mandic, X. Zhang, N. Mirabolfathi, Bedangadas Mohanty, A. Jastram, A. Kennedy, Blas Cabrera, Enectali Figueroa-Feliciano, E. Lopez Asamar, Noah Kurinsky, B. von Krosigk, Bernard Sadoulet, A. E. Robinson, and Douglas Wright
Subjects: Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Dark matter, FOS: Physical sciences, Electron, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Recoil, Ionization, 0103 physical sciences, Neutron, Physics::Atomic Physics, 010306 general physics, Nuclear Experiment, Instrumentation and Methods for Astrophysics (astro-ph.IM), Instrumentation, Physics, Elastic scattering, 010308 nuclear & particles physics, Instrumentation and Detectors (physics.ins-det), 3. Good health, Semiconductor detector, Cryogenic Dark Matter Search, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: The Cryogenic Dark Matter Search (CDMS II) experiment aims to detect dark matter particles that elastically scatter from nuclei in semiconductor detectors. The resulting nuclear-recoil energy depositions are detected by ionization and phonon sensors. Neutrons produce a similar spectrum of low-energy nuclear recoils in such detectors, while most other backgrounds produce electron recoils. The absolute energy scale for nuclear recoils is necessary to interpret results correctly. The energy scale can be determined in CDMS II silicon detectors using neutrons incident from a broad-spectrum $^{252}$Cf source, taking advantage of a prominent resonance in the neutron elastic scattering cross section of silicon at a recoil (neutron) energy near 20 (182) keV. Results indicate that the phonon collection efficiency for nuclear recoils is $4.8^{+0.7}_{-0.9}$% lower than for electron recoils of the same energy. Comparisons of the ionization signals for nuclear recoils to those measured previously by other groups at higher electric fields indicate that the ionization collection efficiency for CDMS II silicon detectors operated at $\sim$4 V/cm is consistent with 100% for nuclear recoils below 20 keV and gradually decreases for larger energies to $\sim$75% at 100 keV. The impact of these measurements on previously published CDMS II silicon results is small., Comment: 22 pages, 17 figures, 1 table, 1 appendix
Published: 2018

13. Energy loss due to defect formation from 206Pb recoils in SuperCDMS germanium detectors

Author: I. J. Arnquist, Steve Yellin, D. Toback, Dennis Wright, R. Mahapatra, Nicholas Mast, Andrew Scarff, Todd Doughty, Vijay Iyer, Lauren Hsu, Allison Kennedy, Betty A. Young, Danika MacDonell, Amy Roberts, Dan Jardin, R. Germond, Vuk Mandic, Matt Pyle, P. Cushman, Jorge Morales, A. N. Villano, Dan Bauer, S. M. Oser, John L. Orrell, Matthew Wilson, Kartik Senapati, Francisco Ponce, Alan Robinson, Ryan Underwood, Concetta Cartaro, Belina von Krosigk, Hang Qiu, J. Street, William Page, Brett Cornell, Jodi Cooley, S. L. Watkins, Ben Loer, Andrew Kubik, M. Pepin, Eric W. Hoppe, Hirohisa Tanaka, Michael Bowles, R. Calkins, J. Sander, E. H. Miller, David G. Cerdeño, Angela Reisetter, Xiaohe Zhang, Rusty Harris, T. Aralis, Samir Banik, Jon Wilson, Paul Brink, Eleanor Fascione, N. Mirabolfathi, Bedangadas Mohanty, Wolfgang Rau, Matthew Stein, Blas Cabrera, Richard Lawrence, Elias Lopez-Asamar, Sudip Poudel, Matt Fritts, Bruno Serfass, Silvia Scorza, Chitrasen Jena, Noah Kurinsky, Elham Azadbakht, R. Bunker, Muad Ghaith, D'Ann Barker, Bernard Sadoulet, Hannah Rogers, Philippe Di Stefano, R. W. Schnee, Tyler Reynolds, Sunil Golwala, Yen-Yung Chang, Tom Ren, Jack Nelson, William Baker, R. Partridge, Pat Lukens, Martin E. Huber, Danielle Speller, Ziqing Hong, Gilles Gerbier, C. W. Fink, Michael Kelsey, Tali Figueroa, Robert Agnese, Joshua Winchell, Xuji Zhao, Tsuguo Aramaki, Tarek Saab, and Thomas Binder
Subjects: Energy loss, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Physics - Instrumentation and Detectors, Physics and Astronomy (miscellaneous), Dark matter, FOS: Physical sciences, chemistry.chemical_element, Germanium, Applied Physics (physics.app-ph), 01 natural sciences, 7. Clean energy, Nuclear physics, 0103 physical sciences, 010306 general physics, Nuclear Experiment, Physics, 010308 nuclear & particles physics, Detector, Instrumentation and Detectors (physics.ins-det), Physics - Applied Physics, Threshold energy, chemistry, Frenkel defect, Cryogenic Dark Matter Search, Energy (signal processing), Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: The Super Cryogenic Dark Matter Search experiment (SuperCDMS) at the Soudan Underground Laboratory studied energy loss associated with Frenkel defect formation in germanium crystals at mK temperatures using in situ $^{210}$Pb sources. We examine the spectrum of $^{206}$Pb nuclear recoils near its expected 103 keV endpoint energy and determine an energy loss of $\left(6.08\pm0.18\right)$ %, which we attribute to defect formation. From this result and using TRIM simulations, we extract the first experimentally determined average displacement threshold energy of $\left(19.7^{+0.6}_{-0.5}\right)$ eV for germanium. This has implications for the analysis thresholds of future germanium-based dark matter searches., 4 Figures, Two data files, One data release description file
Published: 2018

14. Production Rate Measurement of Tritium and Other Cosmogenic Isotopes in Germanium with CDMSlite

Author: H. R. Harris, B. Loer, B. Serfass, W. A. Page, S. Scorza, E. Azadbakht, David G. Cerdeño, John L. Orrell, D. MacDonell, C. Cartaro, M. A. Bowles, Enectali Figueroa-Feliciano, R. Calkins, R. Ren, N. Mirabolfathi, Yu Kai Chang, A. N. Villano, S. M. Oser, Jodi Cooley, John Wilson, B. von Krosigk, G. Gerbier, Xingbo Zhao, T. Reynolds, Betty A. Young, J. Winchell, S. J. Yellin, Tsuguo Aramaki, H. E. Rogers, M. Ghaith, A. Kubik, S. L. Watkins, P. Cushman, J. D. Morales Mendoza, A. Kennedy, Blas Cabrera, Chitrasen Jena, H. A. Tanaka, P. L. Brink, Bernard Sadoulet, A. Scarff, H. Qiu, A. E. Robinson, R. Partridge, Matt Pyle, E. Lopez Asamar, Noah Kurinsky, B. Cornell, R. Underwood, D. Barker, T. Aralis, Kartik Senapati, D. Jardin, R. Agnese, Danielle Speller, I. J. Arnquist, Ruth Lawrence, Tarek Saab, N. Mast, P. Lukens, L. Hsu, T. Binder, Sunil Golwala, D. Toback, M. H. Kelsey, D. H. Wright, Ziqing Hong, R. Bunker, M. Stein, C. W. Fink, M. J. Wilson, S. Banik, Eric W. Hoppe, A. Reisetter, Martin E. Huber, W. Rau, Matthew Fritts, R. Germond, Vuk Mandic, J. K. Nelson, J. Sander, R. W. Schnee, M. Pepin, X. Zhang, Bedangadas Mohanty, A. Jastram, D. A. Bauer, S. S. Poudel, W. Baker, Fernando Ponce, E. Fascione, Amy Roberts, T. Doughty, J. Street, R. Mahapatra, V. Iyer, and E. H. Miller
Subjects: Cosmology and Nongalactic Astrophysics (astro-ph.CO), Physics - Instrumentation and Detectors, Dark matter, chemistry.chemical_element, FOS: Physical sciences, Germanium, Radiation, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Ionization, 0103 physical sciences, Nuclear Experiment (nucl-ex), 010303 astronomy & astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Nuclear Experiment, Physics, Radionuclide, Isotope, 010308 nuclear & particles physics, Astronomy and Astrophysics, Instrumentation and Detectors (physics.ins-det), Semiconductor detector, chemistry, Tritium, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: Future direct searches for low-mass dark matter particles with germanium detectors, such as SuperCDMS SNOLAB, are expected to be limited by backgrounds from radioactive isotopes activated by cosmogenic radiation inside the germanium. There are limited experimental data available to constrain production rates and a large spread of theoretical predictions. We examine the calculation of expected production rates, and analyze data from the second run of the CDMS low ionization threshold experiment (CDMSlite) to estimate the rates for several isotopes. We model the measured CDMSlite spectrum and fit for contributions from tritium and other isotopes. Using the knowledge of the detector history, these results are converted to cosmogenic production rates at sea level. The production rates in atoms/(kg$\cdot$day) are 74$\pm$9 for $^3$H, 1.5$\pm$0.7 for $^{55}$Fe, 17$\pm$5 for $^{65}$Zn, and 30$\pm$18 for $^{68}$Ge., 14 pages, 10 figures, 5 tables. v5 contains the extended data release (and documentation) of the CDMSlite Run 2 data as ancillary files
Published: 2018

15. First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector

Author: C. Stanford, A. N. Villano, S. M. Oser, T. Reynolds, John L. Orrell, R. Underwood, D. MacDonell, B. Cornell, H. R. Harris, J. Street, W. A. Page, John Wilson, A. Scarff, C. Cartaro, P. L. Brink, Hiromasa Tanaka, Ruth Lawrence, E. Fascione, M. Pepin, N. Mirabolfathi, M. Ghaith, A. Kubik, D. Jardin, D. A. Bauer, J. D. Morales Mendoza, Sunil Golwala, S. S. Poudel, T. Doughty, W. Baker, Xingbo Zhao, Tarek Saab, N. Mast, S. Scorza, C. W. Fink, J. K. Nelson, R. Mahapatra, Fernando Ponce, R. Germond, R. W. Schnee, X. Zhang, M. H. Kelsey, B. Loer, B. Serfass, J. V. Leyva, M. Stein, D. Barker, Bedangadas Mohanty, J. Sander, T. Aralis, Amy Roberts, R. Agnese, Martin E. Huber, Betty A. Young, David G. Cerdeño, B. von Krosigk, E. H. Miller, P. Cushman, D. H. Wright, A. Phipps, Yu Kai Chang, R. K. Romani, Jodi Cooley, M. A. Bowles, S. Banik, Eric W. Hoppe, A. Kennedy, Matt Pyle, Blas Cabrera, Chitrasen Jena, T. Binder, S. J. Yellin, Tsuguo Aramaki, Matthew Fritts, Kartik Senapati, E. Azadbakht, Noah Kurinsky, Vuk Mandic, Enectali Figueroa-Feliciano, R. Partridge, R. Calkins, E. Lopez Asamar, V. Iyer, S. L. Watkins, J. Winchell, Bernard Sadoulet, A. E. Robinson, Danielle Speller, P. Lukens, P. Di Stefano, Ziqing Hong, M. J. Wilson, H. E. Rogers, H. Qiu, R. Bunker, A. Reisetter, W. Rau, J. So, G. Gerbier, I. J. Arnquist, L. Hsu, and D. Toback
Subjects: Physics, Photon, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, Detector, Dark matter, General Physics and Astronomy, FOS: Physical sciences, Charge (physics), Instrumentation and Detectors (physics.ins-det), Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, 7. Clean energy, Dark photon, Semiconductor detector, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Excited state, 0103 physical sciences, 010306 general physics, Absorption (electromagnetic radiation), Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We present the first limits on inelastic electron-scattering dark matter and dark photon absorption using a prototype SuperCDMS detector having a charge resolution of 0.1 electron-hole pairs (CDMS HVeV, a 0.93 gram CDMS HV device). These electron-recoil limits significantly improve experimental constraints on dark matter particles with masses as low as 1 MeV/$\mathrm{c^2}$. We demonstrate a sensitivity to dark photons competitive with other leading approaches but using substantially less exposure (0.49 gram days). These results demonstrate the scientific potential of phonon-mediated semiconductor detectors that are sensitive to single electronic excitations., 6 pages + title and references, 6 figures, includes erratum submitted to PRL and data release
Published: 2018

16. Results from the Super Cryogenic Dark Matter Search Experiment at Soudan

Author: Tarek Saab, N. Mast, A. N. Villano, S. M. Oser, P. L. Brink, C. Cartaro, T. Reynolds, H. R. Harris, D. A. Bauer, W. A. Page, B. Welliver, S. S. Poudel, W. Baker, N. Mirabolfathi, Enectali Figueroa-Feliciano, R. Partridge, A. Kennedy, J. J. Yen, Jodi Cooley, Blas Cabrera, Betty A. Young, B. Cornell, Chitrasen Jena, D. H. Wright, D. Balakishiyeva, A. Phipps, S. Banik, Eric W. Hoppe, J. D. Morales Mendoza, Noah Kurinsky, Xingbo Zhao, A. E. Robinson, Yu Kai Chang, T. Binder, S. Scorza, Matthew Fritts, D. Barker, Bernard Sadoulet, Vuk Mandic, Sunil Golwala, I. J. Arnquist, G. Godfrey, Amy Roberts, P. Di Stefano, Martin E. Huber, M. H. Kelsey, S. J. Yellin, Tsuguo Aramaki, D. Jardin, John Wilson, M. Stein, D. O. Caldwell, L. Hsu, P. Cushman, E. Lopez Asamar, R. Agnese, R. Underwood, D. Toback, J. Hall, Miguel Daal, J. K. Nelson, X. Zhang, M. Peñalver Martinez, Bedangadas Mohanty, Matt Pyle, M. A. Bowles, B. von Krosigk, A. Jastram, Kartik Senapati, J. Sander, Hiromasa Tanaka, John L. Orrell, D. MacDonell, K. Schneck, E. Fascione, M. Pepin, V. Iyer, R. W. Schnee, R. Basu Thakur, K. L. Page, R. Calkins, T. Doughty, H. E. Rogers, H. Qiu, P. Redl, B. Loer, B. Serfass, E. H. Miller, R. Germond, Yi Chen, P. Lukens, Ziqing Hong, M. J. Wilson, Danielle Speller, M. Ghaith, A. Kubik, R. Mahapatra, J. Street, David G. Cerdeño, G. Gerbier, R. Bunker, A. Reisetter, and W. Rau
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Weakly interacting massive particles, 0103 physical sciences, General Physics and Astronomy, Cryogenic Dark Matter Search, 010306 general physics, 01 natural sciences, Event (particle physics)
Abstract: We report the result of a blinded search for weakly interacting massive particles (WIMPs) using the majority of the SuperCDMS Soudan data set. With an exposure of 1690 kg d, a single candidate event is observed, consistent with expected backgrounds. This analysis (combined with previous Ge results) sets an upper limit on the spin-independent WIMP–nucleon cross section of 1.4×10−44 (1.0×10−44) cm2 at 46 GeV/c2. These results set the strongest limits for WIMP–germanium-nucleus interactions for masses >12 GeV/c2.
Published: 2018

17. The radiopurity.org material database

Author: Alan Poon, Jodi Cooley, and J. C. Loach
Subjects: WIMP, Database, Computer science, Dark matter, Neutrino, computer.software_genre, computer
Abstract: The database at http://www.radiopurity.org is the world’s largest public database of material radio-purity mea-surements. These measurements are used by members of the low-background physics community to build experiments that search for neutrinos, neutrinoless double-beta decay, WIMP dark matter, and other exciting physics. This paper summarizes the current status and the future plan of this database.
Published: 2018

18. Radon Daughter Plate-out Measurements at SNOLAB for Polyethylene and Copper

Author: M. Stein, Ben Loer, S. Scorza, Ray Bunker, Dan Bauer, Jodi Cooley, and R. Calkins
Subjects: Physics, Nuclear and High Energy Physics, Spectrometer, Radiochemistry, FOS: Physical sciences, chemistry.chemical_element, Radon, Polyethylene, 01 natural sciences, Copper, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, chemistry, 13. Climate action, 0103 physical sciences, Activity concentration, Emissivity, 010306 general physics, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Instrumentation
Abstract: Polyethylene and copper samples were exposed to the underground air at SNOLAB for approximately three months while several environmental factors were monitored. Predictions of the radon-daughter plate-out rate are compared to the resulting surface activities, obtained from high-sensitivity measurements of alpha emissivity using the XIA UltraLo-1800 spectrometer at SMU. From these measurements, we determine an average $^{210}$Pb plate-out rate of 249 and 423 atoms/day/cm$^{2}$ for polyethylene and copper, respectively, when exposed to radon activity of 135 Bq/m$^{3}$ at SNOLAB. A time-dependent model of alpha activity is discussed for these materials placed in similar environmental conditions., 7 pages, 7 figures
Published: 2017

19. Projected sensitivity of the SuperCDMS SNOLAB experiment

Author: Xingbo Zhao, C. Cartaro, M. A. Bowles, R. Agnese, A. N. Villano, S. M. Oser, B. Welliver, John L. Orrell, Jodi Cooley, H. R. Harris, W. A. Page, David G. Cerdeño, G. Gerbier, Tarek Saab, N. Mast, I. J. Arnquist, Sunil Golwala, M. H. Kelsey, R. Underwood, D. Jardin, John Wilson, Bernard Sadoulet, L. Hsu, Hiromasa Tanaka, P. Di Stefano, M. Pepin, E. Lopez Asamar, N. Mirabolfathi, D. Toback, P. Redl, R. Basu Thakur, K. L. Page, R. Mahapatra, A. Leder, R. Calkins, H. E. Rogers, B. Cornell, Donald J. Holmgren, H. Qiu, A. W. Borgland, J. Street, D. Barker, J. D. Morales Mendoza, Danielle Speller, R. Bunker, J. J. Yen, S. Fallows, A. Reisetter, S. J. Yellin, Tsuguo Aramaki, M. Ghaith, Matt Pyle, W. Rau, V. Iyer, T. Doughty, A. Kubik, D. A. Bauer, Amy Roberts, S. S. Poudel, Enectali Figueroa-Feliciano, W. Baker, J. Sander, L. Esteban, P. Lukens, H. Chagani, Ziqing Hong, R. Partridge, Adam Anderson, Matthew Fritts, A. E. Robinson, Vuk Mandic, Yi Chen, Betty A. Young, T. Hofer, A. Phipps, M. Stein, X. Zhang, Miguel Daal, Robert A. Moffatt, A. Jastram, P. L. Brink, David O. Caldwell, D. H. Wright, Eric W. Hoppe, A. Kennedy, Blas Cabrera, Noah Kurinsky, K. Schneck, B. von Krosigk, B. Loer, B. Serfass, R. W. Schnee, P. Cushman, G.L. Godfrey, Martin E. Huber, and J. Hall
Subjects: Particle physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Solar neutrino, Dark matter, FOS: Physical sciences, Atomic, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Particle and Plasma Physics, Recoil, 0103 physical sciences, Nuclear, 010306 general physics, physics.ins-det, Physics, Quantum Physics, hep-ex, 010308 nuclear & particles physics, Detector, Molecular, Instrumentation and Detectors (physics.ins-det), Nuclear & Particles Physics, Orders of magnitude (time), Weakly interacting massive particles, astro-ph.CO, High Energy Physics::Experiment, Cryogenic Dark Matter Search, Neutrino, Astronomical and Space Sciences, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: SuperCDMS SNOLAB will be a next-generation experiment aimed at directly detecting low-mass (< 10 GeV/c$^2$) particles that may constitute dark matter by using cryogenic detectors of two types (HV and iZIP) and two target materials (germanium and silicon). The experiment is being designed with an initial sensitivity to nuclear recoil cross sections ~ 1 x 10$^{-43}$ cm$^2$ for a dark matter particle mass of 1 GeV/c$^2$, and with capacity to continue exploration to both smaller masses and better sensitivities. The phonon sensitivity of the HV detectors will be sufficient to detect nuclear recoils from sub-GeV dark matter. A detailed calibration of the detector response to low energy recoils will be needed to optimize running conditions of the HV detectors and to interpret their data for dark matter searches. Low-activity shielding, and the depth of SNOLAB, will reduce most backgrounds, but cosmogenically produced $^{3}$H and naturally occurring $^{32}$Si will be present in the detectors at some level. Even if these backgrounds are x10 higher than expected, the science reach of the HV detectors would be over three orders of magnitude beyond current results for a dark matter mass of 1 GeV/c$^2$. The iZIP detectors are relatively insensitive to variations in detector response and backgrounds, and will provide better sensitivity for dark matter particle masses (> 5 GeV/c$^2$). The mix of detector types (HV and iZIP), and targets (germanium and silicon), planned for the experiment, as well as flexibility in how the detectors are operated, will allow us to maximize the low-mass reach, and understand the backgrounds that the experiment will encounter. Upgrades to the experiment, perhaps with a variety of ultra-low-background cryogenic detectors, will extend dark matter sensitivity down to the "neutrino floor", where coherent scatters of solar neutrinos become a limiting background., SuperCDMS SNOLAB Projected sensitivity reach
Published: 2017

20. Dark Matter Still at Large

Author: Jodi Cooley
Subjects: Physics, 010308 nuclear & particles physics, 0103 physical sciences, Dark matter, Mixed dark matter, Warm dark matter, Astrophysics, 010303 astronomy & astrophysics, 01 natural sciences
Published: 2017

21. Sources of variability in alpha emissivity measurements at LA and ULA levels, a multicenter study

Author: Zhengmao Zhu, Brett M. Clark, Jodi Cooley, Jean-Luc Autran, Michael S. Gordon, Brendan D. McNally, William K. Warburton, and Stuart Coleman
Subjects: Physics, Nuclear and High Energy Physics, Standard sample, Physics - Instrumentation and Detectors, FOS: Physical sciences, Sample (statistics), Instrumentation and Detectors (physics.ins-det), Alpha particle, Alpha (navigation), Computational physics, Semiconductor industry, Multicenter study, Emissivity, Residual activity, Instrumentation
Abstract: Alpha emissivity measurements are important in the semiconductor industry for assessing the suitability of materials for use in production processes. A recently published round-robin study that circulated the same samples to several alpha counting centers showed wide center-to-center variations in measured alpha emissivity. A separate analysis of these results hypothesized that much of the variation might arise from differences in sample-to-entrance window separations. XIA recently introduced an ultra low background counter, the UltraLo-1800 (UltraLo), that operates in a fundamentally different manner from the proportional counters used at most of the centers in the original study. In particular, by placing the sample within the counting volume, it eliminates the sample-to-entrance window separation issue noted above, and so offers an opportunity to test this hypothesis. In this work we briefly review how the UltraLo operates and describe a new round-robin study conducted entirely on UltraLo instruments using a set of standard samples that included two samples used in the original study. This study shows that, for LA (Low Alpha between 2 and 50 alpha/khr-cm$^2$) sample measurements, the only remaining site-to-site variations were due to counting statistics. Variations in ULA (Ultra-Low Alpha < 2 alpha/khr-cm$^2$) sample measurements were reduced three-fold, compared to the earlier study, with the measurements suggesting that residual activity variations now primarily arise from site-to-site differences in the cosmogenic background., 7 pages, 8 figures, 4 tables; Fixed typos, added discussion on potential for positive systematic bias per reviewer comments, quick formatting refresh. Accepted for publication in Nucl. Instr. and Meth. in Phys. Res. A
Published: 2014

22. New Results from the Search for Low-Mass Weakly Interacting Massive Particles with the CDMS Low Ionization Threshold Experiment

Author: B. Welliver, B. Shank, Matt Pyle, J. J. Yen, D. Barker, B. Loer, J. Hall, T. Doughty, B. Serfass, G. L. Godfrey, D. Jardin, R. Agnese, R. Basu Thakur, K. L. Page, Jodi Cooley, R. Calkins, H. R. Harris, N. Mirabolfathi, W. A. Page, Yi Chen, David G. Cerdeño, T. Hofer, D. Balakishiyeva, Y. Ricci, L. Esteban, R. Bunker, J. Zhang, J. D. Morales Mendoza, A. Jastram, M. Asai, A. Reisetter, Miguel Daal, S. Fallows, W. Rau, H. E. Rogers, P. Redl, Sunil Golwala, A. Kennedy, Martin E. Huber, D. A. Bauer, S. J. Yellin, Tsuguo Aramaki, H. Qiu, W. Baker, John Wilson, Blas Cabrera, Tarek Saab, N. Mast, Bernard Sadoulet, Robert A. Moffatt, E. Lopez Asamar, Amy Roberts, A. Borgland, Vuk Mandic, O. Kamaev, K. Prasad, A. Leder, B. Cornell, S. Upadhyayula, R. Underwood, J. Billard, M. Pepin, R. Partridge, Enectali Figueroa-Feliciano, R. W. Schnee, P. Cushman, M. H. Kelsey, Betty A. Young, A. Phipps, J. Sander, L. Hsu, D. Toback, M. Ghaith, P. Lukens, B. Kara, Adam Anderson, R. Mahapatra, H. Chagani, Donald J. Holmgren, Danielle Speller, M. A. Bowles, K. Schneck, D. H. Wright, P. L. Brink, David O. Caldwell, A. N. Villano, S. M. Oser, S. Scorza, and P. Di Stefano
Subjects: Physics, Particle physics, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Phonon, Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, Electron, Parameter space, 01 natural sciences, Semiconductor detector, Nuclear physics, WIMP, Weakly interacting massive particles, Ionization, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Low Mass
Abstract: © 2016 American Physical Society. The CDMS low ionization threshold experiment (CDMSlite) uses cryogenic germanium detectors operated at a relatively high bias voltage to amplify the phonon signal in the search for weakly interacting massive particles (WIMPs). Results are presented from the second CDMSlite run with an exposure of 70 kg day, which reached an energy threshold for electron recoils as low as 56 eV. A fiducialization cut reduces backgrounds below those previously reported by CDMSlite. New parameter space for the WIMP-nucleon spin-independent cross section is excluded for WIMP masses between 1.6 and 5.5 GeV/c2.
Published: 2016

23. The CDMS II Data Acquisition System

Author: Jodi Cooley, R. Mahapatra, C. Savage, D. A. Bauer, Sunil Golwala, H. N. Nelson, L. Duong, M. B. Crisler, R. Ferril, Donald J. Holmgren, J. Hall, P. Cushman, J. Sander, S. Burke, F. DeJongh, and A. Reisetter
Subjects: Physics, Nuclear and High Energy Physics, Data processing, Java, business.industry, Modular design, Remote operation, Data acquisition, Electronics, User interface, business, Instrumentation, computer, Signal conditioning, Computer hardware, computer.programming_language
Abstract: The Data Acquisition System for the CDMS II dark matter experiment was designed and built when the experiment moved to its new underground installation at the Soudan Lab. The combination of remote operation and increased data load necessitated a completely new design. Elements of the original LabView system remained as stand-alone diagnostic programs, but the main data processing moved to a VME-based system with custom electronics for signal conditioning, trigger formation and buffering. The data rate was increased 100-fold and the automated cryogenic system was linked to the data acquisition. A modular server framework with associated user interfaces was implemented in Java to allow control and monitoring of the entire experiment remotely.
Published: 2011

24. Present Status of the SuperCDMS program

Author: J. Hall, R. Hennings-Yeomans, Darren Grant, W. Rau, Jeffrey P. Filippini, S. J. Yellin, R. W. Ogburn, L. Duong, Martin E. Huber, Jodi Cooley, Bruno Serfass, J. Yoo, Tarek Saab, Kent D. Irwin, Enectali Figueroa-Feliciano, F. DeJongh, Betty A. Young, K. M. Sundqvist, Astrid Tomada, Bernard Sadoulet, M. R. Dragowsky, Blas Cabrera, X. Qiu, J. Sander, D. O. Caldwell, R. Schmitt, R. Mahapatra, Donald J. Holmgren, A. Reisetter, C. N. Bailey, D. A. Bauer, Sunil Golwala, M. Pyle, R. Bunker, L. Novak, R. W. Schnee, P. Cushman, D. N. Seitz, D. S. Akerib, H. N. Nelson, N. Mirabolfathi, P. L. Brink, and E. J. Ramberg
Subjects: Physics, Particle physics, Large Hadron Collider, Physics::Instrumentation and Detectors, Dark matter, Massive particle, Supersymmetry, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Nuclear physics, WIMP, Weakly interacting massive particles, High Energy Physics::Experiment, General Materials Science, Sensitivity (control systems), Cryogenic Dark Matter Search
Abstract: The expected final reach of the Weakly Interacting Massive Particle (WIMP) search experiment CDMS-II by the end of 2007 is a WIMP-nucleon cross-section sensitivity of 2.1×10−44 cm2. To proceed further in our search, we have proposed the SuperCDMS Phase A project that would deploy 42 1-inch thick Ge detectors, at a site deeper than the location of CDMS II, and reach a desired sensitivity goal of 1.3×10−45 cm2. These cross-sections are of interest and are complementary to Supersymmetry searches at the Large Hadron Collider (LHC) and future linear colliders.
Published: 2008

25. Detector Development for the Next Phases of the Cryogenic Dark Matter Search: Results from 1 Inch Ge and Si Detectors

Author: J. P. Castle, Bernard Sadoulet, Jeffrey P. Filippini, M. R. Dragowsky, P. L. Brink, K. M. Sundqvist, L. Novak, Betty A. Young, R. Hennings-Yeomans, Jodi Cooley, Darren Grant, R. W. Ogburn, D. N. Seitz, Astrid Tomada, M. E. Danowski, M. Pyle, C. N. Bailey, R. W. Schnee, Z. Ahmed, D. S. Akerib, J. Ruderman, Blas Cabrera, B. Serfass, and N. Mirabolfathi
Subjects: Physics, Physics::Instrumentation and Detectors, Dark matter, Detector, Electron, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Nuclear physics, Recoil, WIMP, Weakly interacting massive particles, High Energy Physics::Experiment, General Materials Science, Cryogenic Dark Matter Search, Transition edge sensor
Abstract: The Cryogenic Dark Matter Search (CDMS) experiment is searching for Weakly Interacting Massive Particles (WIMPs) using detectors with the ability to discriminate between candidate (nuclear recoil) and background (electron recoil) events by measuring both phonon and ionization signals from recoils in the detector crystals. As CDMS scales up to greater WIMP sensitivity, it is necessary to increase the detector mass and further improve background discrimination. CDMS is engaged in ongoing fabrication and development of new detector designs in order to meet these criteria for the proposed SuperCDMS experiment. Thicker detector prototypes have been produced with new photolithographic masks. These masks have greater surface coverage of the quasi particle trap and transition edge sensor system to provide superior athermal phonon collection. Results from continuing laboratory tests are presented which already indicate improvement in discrimination parameters.
Published: 2008

26. Surface Event Rejection Using Phonon Information in CDMS

Author: Miguel Daal, C. Savage, Laura Baudis, A. Lu, M. Pyle, R. Hennings-Yeomans, Darren Grant, Ronald R. Ross, Thushara Perera, Bernard Sadoulet, S. J. Yellin, H. N. Nelson, Betty A. Young, S. Leclercq, M. R. Dragowsky, K. M. Sundqvist, C. N. Bailey, Vuk Mandic, N. Mirabolfathi, R. H. Nelson, D. D. Driscoll, M. J. Attisha, R. Ferril, P. Cushman, Sunil Golwala, Donald J. Holmgren, D. O. Caldwell, S. Kamat, D. A. Bauer, J. Sander, D. N. Seitz, J. P. F. Thompson, D. S. Akerib, Blas Cabrera, Bruno Serfass, R. Bunker, J. Yoo, Chihway Chang, R. J. Gaitskell, Jodi Cooley, R. L. Dixon, R. Mahapatra, R. W. Schnee, G. Wang, M. B. Crisler, A. Reisetter, W. Rau, P. Meunier, P. P. Brusov, E. J. Ramberg, Jeffrey P. Filippini, P. L. Brink, R. W. Ogburn, L. Duong, and Martin E. Huber
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, WIMP, Phonon, Estimator, Figure of merit, Acoustic Phonons, Signal edge, Atomic and Molecular Physics, and Optics, Simulation
Abstract: The published CDMS analyses have used the shape of the phonon signal rising edge to reject low-ionization-yield surface events which produce acoustic phonons more quickly than bulk events do. To achieve better WIMP sensitivity with future larger exposures, we are using a simplified model of phonon production and propagation to construct event position estimators that help us to find more efficient surface event rejection cuts. We describe this model and the resulting new cuts, and summarize the surface event leakage rates and the sensitivity figures of merit of the five surface event rejection methods developed in the second CDMS II Soudan run data analysis.
Published: 2007

27. Studies on the Reduction of Radon Plate-Out

Author: Stephen Jacob Sekula, M. Nakib, Jodi Cooley, R. Calkins, and M. Bruemmer
Subjects: Materials science, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, Stable isotope ratio, Radiochemistry, chemistry.chemical_element, FOS: Physical sciences, Radon, Alpha particle, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, Copper, 030218 nuclear medicine & medical imaging, High Energy Physics - Experiment, 03 medical and health sciences, High Energy Physics - Experiment (hep-ex), 0302 clinical medicine, chemistry, 13. Climate action, Double beta decay, 0103 physical sciences, Particle, Neutron, Gas mantle
Abstract: The decay of common radioactive gases, such as radon, produces stable isotopes by a sequence of daughter particles with varied half-lives. These daughter particles are a significant source of gamma, neutron, and alpha particle backgrounds that can mimic desired signals in dark matter and neutrinoless double beta decay experiments. In the LUMINA Laboratory at Southern Methodist University (SMU), studies of radon plate-out onto copper samples are conducted using one of XIA's first five UltraLo 1800 alpha counters. We present results from investigations into various mitigation approaches. A custom-built copper holder (in either plastic or metal) has been designed and produced to maximize the copper's exposure to 220Rn. The 220Rn source is a collection of camping lantern mantles. We present the current status of control and experimental methods for addressing radon exposure levels., Comment: 4 pages, 1 figure, Conference Proceedings for Low Radioactivity Techniques 2015
Published: 2015
Full Text: View/download PDF

28. Search for Diffuse Astrophysical Neutrino Flux Using Ultra–High‐Energy Upward‐going Muons in Super‐Kamiokande I

Author: Yoshihisa Obayashi, Masayuki Nakahata, Haruki Nishino, Katsuki Hiraide, Steven Dazeley, Christopher Walter, Takuya Hasegawa, Takashi Iida, Yoichiro Suzuki, Eric Thrane, Masashi Yokoyama, Yoshinari Hayato, Jennifer Raaf, Edward Kearns, Joanna Zalipska, Andrew Stachyra, Alec Habig, Richard Jeffrey Wilkes, Byeongsu Yang, Jodi Cooley, Mark Vagins, and Yuichi Oyama
Subjects: Physics, High energy, Range (particle radiation), Muon, Active galactic nucleus, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Flux, Astronomy and Astrophysics, Astrophysics, High Energy Physics - Experiment, Space and Planetary Science, High Energy Physics::Experiment, Neutrino, Super-Kamiokande, Event (particle physics)
Abstract: Many astrophysical models predict a diffuse flux of high-energy neutrinos from active galactic nuclei and other extra-galactic sources. At muon energies above 1 TeV, the upward-going muon flux induced by neutrinos from active galactic nuclei is expected to exceed the flux due to atmospheric neutrinos. We have performed a search for this astrophysical neutrino flux by looking for upward-going muons in the highest energy data sample from the Super-Kamiokande detector using 1679.6 live days of data. We found one extremely high energy upward-going muon event, compared with an expected atmospheric neutrino background of 0.46 plus or minus 0.23 events. Using this result, we set an upper limit on the diffuse flux of upward-going muons due to neutrinos from astrophysical sources in the muon energy range 3.16-100 TeV., Comment: 10 pages, 6 figures, minor changes to match version published in ApJ
Published: 2006

29. Overview of Non-Liquid Noble Direct Detection Dark Matter Experiments

Author: Jodi Cooley
Subjects: Physics, Current generation, Physics - Instrumentation and Detectors, Field (physics), 010308 nuclear & particles physics, Dark matter, FOS: Physical sciences, Astronomy and Astrophysics, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, Engineering physics, Space and Planetary Science, 0103 physical sciences, Current (fluid), 010306 general physics, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract: In the last few years many advances have been made in the field of dark matter direct detection. In this article I will review the progress and status of experiments that employ detection techniques that do not use noble liquids. First, I will give an introduction to the field of dark matter and discuss the background challenges that confront all dark matter experiments. I will also discuss various detection techniques employed by the current generation and the next generation of dark matter experiments. Finally, I will discuss recent results and the status of current and future direct detection experiments., 19 pages, 1 figure. In Proceedings of the 13th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2013
Published: 2014

30. NEUTRINO ASTRONOMY AND COSMIC RAYS AT THE SOUTH POLE: LATEST RESULTS FROM AMANDA AND PERSPECTIVES FOR ICECUBE

Author: P. Ekström, P. Berghaus, M. Kestel, T. DeYoung, D. Z. Besson, T. J. Sumner, R. H. Minor, A. R. Fazely, S. Böser, Kael Hanson, S. Patton, P. Niessen, I. Taboada, R. G. Stokstad, T. Castermans, Carlos Pena-Garay, K. Hultqvist, R. Wischnewski, R. Hardtke, J. K. Becker, C. Pérez de los Heros, T. Becka, Yi Wang, Paolo Desiati, D. R. Nygren, P. O. Hulth, D. Steele, R. W. Ellsworth, T. Hauschildt, Johan Lundberg, S. Schlenstedt, T. Straszheim, Adam Bouchta, J. L. Kelley, Christian Bohm, David A. Schneider, Allan Hallgren, H. Wissing, P. Miocinovic, D.W. Atlee, Kyle T. Mandli, J. Cavin, J. W. Nam, George Japaridze, R. Ganugapati, D. Hays, L. Thollander, D. F. Cowen, A. Achterberg, Jodi Cooley, D. Berley, G. C. Hill, R. Porrata, Marek Kowalski, A. Silvestri, R. Paulos, S. H. Seo, T. Stezelberger, J. Yeck, Elisa Resconi, Hakki Ögelman, A. C. Pohl, Pawel Marciniewski, H. Leich, J. Pretz, P. B. Price, Peter Mészáros, S. Stoyanov, R. Ehrlich, D. Seckel, E. Blaufuss, D. J. Boersma, S. Hundertmark, M. Krasberg, M. Hellwig, H. G. Sander, B. Collin, K. Rawlins, Heiko Geenen, Torsten Harenberg, D. Hardtke, M. Ribordy, K. Helbing, Kurt Woschnagg, R. Koch, I. Liubarsky, Christian Spiering, Ph. Olbrechts, C. T. Day, J. Hodges, James Madsen, Paul Evenson, G. W. Sullivan, James E. Braun, S. Richter, J. Rodríguez Martino, C. H. Wiebusch, K. Münich, N. Langer, C. De Clercq, A. W. Jones, John Clem, Soebur Razzaque, L. Gerhardt, Dmitry Chirkin, M. Solarz, Olga Botner, S. Yoshida, T. Neunhöffer, Albrecht Karle, T. Messarius, Anna Davour, Justin Vandenbroucke, Elisa Bernardini, M. Bartelt, A. J. Smith, R. M. Gunasingha, J. Ahrens, Y. Minaeva, Markus Ackermann, S. W. Barwick, W. R. Edwards, R. Morse, N. Kitamura, D. Bertrand, William Carithers, R. Schwarz, C.P. Burgess, M. Walter, T. Burgess, Todor Stanev, Janet Jacobsen, J. A. Coarasa, R. Nahnhauer, R. C. Bay, H. Miyamoto, Xinhua Bai, John N. Bahcall, Jean Gallagher, Glenn Spiczak, S. R. Klein, A. Gross, L. C. Voicu, G. Kohnen, Othmane Bouhali, B. Hughey, K. H. Sulanke, Michael Stamatikos, D. Turčan, C. Walck, J. M. Joseph, Thomas K. Gaisser, G. B. Yodh, Wolfgang Wagner, K. Kuehn, W. Chinowsky, N. van Eijndhoven, K. Schinarakis, Gerald Przybylski, H. S. Matis, Matthias Leuthold, P. Herquet, P. Steffen, J. E. Sopher, Francis Halzen, Jan Conrad, T. Feser, O. Tarasova, K. Hoshina, Wolfgang Rhode, D. Hubert, L. Köpke, J. Bergmans, S. Tilav, K. H. Kampert, H. Kawai, C. P. McParland, E. Kujawski, A. Goldschmidt, K.-H. Becker, and H. Albrecht
Subjects: Physics, Nuclear and High Energy Physics, Photomultiplier, Astronomy, Astronomy and Astrophysics, Cosmic ray, Astrophysics, Solar neutrino problem, Atomic and Molecular Physics, and Optics, Coincidence, law.invention, Telescope, Neutrino detector, law, Neutrino astronomy, Neutrino
Abstract: The AMANDA neutrino telescope has been in operation at the South Pole since 1996. The present final array configuration, operational since 2000, consists of 677 photomultiplier tubes arranged in 19 strings, buried at depths between 1500 and 2000 m in the ice. The most recent results on a multi-year search for point sources of neutrinos will be shown. The study of events triggered in coincidence with the surface array SPASE and AMANDA provided a result on cosmic ray composition. Expected improvements from IceCube/IceTop will also be discussed.
Published: 2005

31. Results from the AMANDA neutrino telescope

Author: Marek Kowalski, Klaus Helbing, Elisa Resconi, Thomas Burgess, Tyce DeYoung, Christopher Wiebusch, and Jodi Cooley
Subjects: Nuclear and High Energy Physics, Atomic and Molecular Physics, and Optics
Published: 2005

32. Results from the AMANDA neutrino telescope

Author: P. Niessen, I. Taboada, Y. Minaeva, C.P. Burgess, D. Bertrand, P. Ekström, K. Rawlins, T. Becka, James Madsen, M. Kestel, J. L. Kelley, C. P. McParland, T. DeYoung, P. B. Price, T. Burgess, T. Neunhöffer, M. Ribordy, A. Karle, A. Goldschmidt, S. Böser, Elisa Resconi, Gerald Przybylski, R. Porrata, Kurt Woschnagg, A. Silvestri, D. Steele, Glenn Spiczak, D. F. Cowen, A. Gross, L. Gerhardt, Dmitry Chirkin, T. Messarius, D. J. Boersma, Torsten Harenberg, Othmane Bouhali, Ph. Olbrecht, Hakki Ögelman, B. Hughey, J. W. Nam, Matthias Leuthold, D. R. Nygren, M. Solarz, K. Helbing, Kyle T. Mandli, P. Steffen, J. Rodríguez Martino, R. C. Bay, Jan Conrad, T. Feser, S. Tilav, R. Nahnhauer, J. Ahrens, C. H. Wiebusch, R. Ganugapati, C. Walck, R. Hardtke, J. K. Becker, Olga Botner, L. Thollander, T. Hauschildt, David A. Schneider, C. Spiering, Thomas K. Gaisser, G. B. Yodh, M. Bartelt, P. Miocinovic, Adam Bouchta, C.P. de los Heros, Allan Hallgren, G. C. Hill, K. Münich, Heiko Geenen, Xinhua Bai, K.-H. Becker, T. Castermans, K. Hultqvist, H. Albrecht, C. De Clercq, Karl-Heinz Sulanke, Markus Ackermann, S. W. Barwick, S. Hundertmark, James E. Braun, M. Walter, Ph. Herquet, Kael Hanson, Yi Wang, Paolo Desiati, M. Krasberg, H. Leich, S. Schlenstedt, Joseph T. Hodges, H. S. Matis, Francis Halzen, K. Kuehn, K. Schinarakis, Jodi Cooley, S. Richter, M. Hellwig, H. G. Sander, B. Collin, D. Hubert, I. Liubarsky, L. Köpke, R. Morse, K. H. Kampert, R. Schwarz, Wolfgang Rhode, M. Kowalski, Elisa Bernardini, R. G. Stokstad, R. Wischnewski, Michael Stamatikos, P. O. Hulth, H. Wissing, Wolfgang Wagner, A. C. Pohl, Pawel Marciniewski, Anna Davour, and Janet Jacobsen
Subjects: Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, Dark matter, Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Solar neutrino problem, Atomic and Molecular Physics, and Optics, law.invention, Telescope, Neutrino detector, law, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino astronomy, Neutrino
Abstract: The Amanda neutrino telescope at the South Pole has been taking data since 1996. Stepwise upgraded, it reached its final stage in January 2000. We present results from the search for extraterrestrial neutrinos, neutrinos from dark matter annihilation and magnetic monopoles.
Published: 2004

33. Measurement of the cosmic ray composition at the knee with the SPASE-2/AMANDA-B10 detectors

Author: T. Messarius, M. Solarz, A. Silvestri, Freddy Binon, T. Burgess, S. Böser, J. P Dewulf, P. B. Price, A. C. Pohl, Y. Minaeva, R. Schwarz, Hakki Ögelman, J. Rodríguez Martino, Kyle T. Mandli, I. Taboada, D. Bertrand, T. O. B. Schmidt, J. Ahrens, K. Rawlins, D. J. Boersma, A. Biron, Kurt Woschnagg, P. Ekström, R. Nahnhauer, M. Hellwig, Matthias Leuthold, Paul Evenson, D. R. Nygren, E. Andres, H. G. Sander, P. Steffen, C. P. McParland, Dmitry Chirkin, Michael Stamatikos, James Madsen, Jan Conrad, T. Feser, R. Porrata, T. DeYoung, Staffan Carius, I. Liubarsky, M. Ribordy, Xinhua Bai, L. Gerhardt, A. Goldschmidt, Gerald Przybylski, Glenn Spiczak, D. Ross, R. Engel, K.-H. Becker, K. H. Sulanke, B. Hughey, T. Neunhöffer, R. Hardtke, T. Becka, M. Gaug, James Kim, Albrecht Karle, R. Morse, R. C. Bay, P. Niessen, Todor Stanev, Yajun Wang, S. Schlenstedt, R. Ganugapati, D. Hubert, C. Wiedemann, Olga Botner, D. Steele, C. Walck, Ph. Herquet, S. Tilav, P. C. Mock, D. F. Cowen, Marek Kowalski, P. Miocinovic, Kael Hanson, Thomas K. Gaisser, G. B. Yodh, L. Köpke, Paolo Desiati, Ph. Olbrechts, H. Leich, C. Pérez de los Heros, T. Castermans, Wolfgang Rhode, C. De Clercq, Christopher Wiebusch, Markus Ackermann, S. W. Barwick, Othmane Bouhali, W. Wu, David A. Schneider, G. C. Hill, Heiko Geenen, Pawel Marciniewski, Anna Davour, Janet Jacobsen, Wolfgang Wagner, P. O. Hulth, H. Wissing, Elisa Bernardini, Jim Hinton, R. G. Stokstad, R. Wischnewski, P. Lindahl, Christian Spiering, S. Hundertmark, K. Rochester, K. Kuehn, Alan Watson, J. I. Lamoureux, K. Schinarakis, Jodi Cooley, T. Hauschildt, K. Hultqvist, S. Young, T. Miller, J. Lloyd-Evans, Adam Bouchta, S. Richter, H. S. Matis, Allan Hallgren, Francis Halzen, E. Dickinson, and Elisa Resconi
Subjects: Astroparticle physics, Physics, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Cosmic ray, Astrophysics, Cosmic Rays, Mass composition, Neutrino astronomy, Atomic mass, Air shower, Ultra-high-energy cosmic ray, Neutrino, Cherenkov radiation
Abstract: The mass composition of high-energy cosmic rays at energies above 1015 eV can provide crucial information for the understanding of their origin. Air showers were measured simultaneously with the SPASE-2 air shower array and the AMANDA-B10 Cherenkov telescope at the South Pole. This combination has the advantage to sample almost all high-energy shower muons and is thus a new approach to the determination of the cosmic ray composition. The change in the cosmic ray mass composition was measured versus existing data from direct measurements at low energies. Our data show an increase of the mean log atomic mass 〈lnA〉 by about 0.8 between 500 TeV and 5 PeV. This trend of an increasing mass through the "knee" region is robust against a variety of systematic effects. © 2004 Elsevier B.V. All rights reserved.
Published: 2004

34. Muon track reconstruction and data selection techniques in AMANDA

Author: P. B. Price, T. O. B. Schmidt, C. Pérez de los Heros, T. Becka, M. Kestel, Kurt Woschnagg, T. DeYoung, Dmitry Chirkin, Staffan Carius, D. Steele, S. Böser, Jodi Cooley, Matthias Leuthold, Elisa Bernardini, D. R. Nygren, R. Ganugapati, P. Herquet, D. F. Cowen, Marek Kowalski, P. Steffen, M. Solarz, Jan Conrad, T. Feser, S. Richter, I. Taboada, T. Castermans, H. S. Matis, K. Rawlins, M. Hellwig, P. Miocinovic, Yajun Wang, H. G. Sander, Francis Halzen, Michael Stamatikos, S. Schlenstedt, C. P. McParland, R. Hardtke, Markus Gaug, B. Collin, D. J. Boersma, James Madsen, C. Wiedemann, A. Goldschmidt, I. Liubarsky, David A. Schneider, A. Silvestri, J. P Dewulf, G. C. Hill, R. G. Stokstad, C. H. Wiebusch, Hakki Ögelman, R. Wischnewski, P. Lindahl, Christian Spiering, Y. Minaeva, R. C. Bay, K.-H. Becker, M. Ribordy, K. Helbing, Heiko Geenen, R. Nahnhauer, J. Rodríguez Martino, K. Kuehn, K. Schinarakis, T. Burgess, Othmane Bouhali, T. Messarius, R. Morse, L. Gerhardt, J. Ahrens, Ph. Olbrechts, K. Münich, K. Hultqvist, T. Neunhöffer, Albrecht Karle, A. Biron, Glenn Spiczak, Xinhua Bai, J. W. Nam, L. Thollander, B. Hughey, H. Leich, S. Tilav, P. C. Mock, R. Schwarz, Kael Hanson, Paolo Desiati, R. Porrata, A. C. Pohl, Gerald Przybylski, K. H. Sulanke, Olga Botner, D. Bertrand, C. De Clercq, S. W. Barwick, C. Walck, Thomas K. Gaisser, G. B. Yodh, Torsten Harenberg, Elisa Resconi, J. K. Becker, T. Hauschildt, Adam Bouchta, Allan Hallgren, Ole Streicher, S. Hundertmark, J. I. Lamoureux, P. Niessen, D. Hubert, Axel Groß, L. Köpke, D. Ross, Pawel Marciniewski, Anna Davour, Janet Jacobsen, Wolfgang Wagner, P. O. Hulth, H. Wissing, Wolfgang Rhode, and P. Ekström
Subjects: Antarctic Muon And Neutrino Detector Array, Physics, AMANDA, Nuclear and High Energy Physics, Particle physics, Neutrino astrophysics, Neutrino telescope, Track reconstruction, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), Detector, FOS: Physical sciences, Astrophysics, IceCube Neutrino Observatory, Neutrino detector, High Energy Physics::Experiment, Muon neutrino, Neutrino, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Instrumentation, Lepton
Abstract: The Antarctic Muon And Neutrino Detector Array (AMANDA) is a high-energy neutrino telescope operating at the geographic South Pole. It is a lattice of photo-multiplier tubes buried deep in the polar ice between 1500m and 2000m. The primary goal of this detector is to discover astrophysical sources of high energy neutrinos. A high-energy muon neutrino coming through the earth from the Northern Hemisphere can be identified by the secondary muon moving upward through the detector. The muon tracks are reconstructed with a maximum likelihood method. It models the arrival times and amplitudes of Cherenkov photons registered by the photo-multipliers. This paper describes the different methods of reconstruction, which have been successfully implemented within AMANDA. Strategies for optimizing the reconstruction performance and rejecting background are presented. For a typical analysis procedure the direction of tracks are reconstructed with about 2 degree accuracy., 40 pages, 16 Postscript figures, uses elsart.sty
Published: 2004

35. Calibration and survey of AMANDA with the SPASE detectors

Author: G. M. Splczak, Yajun Wang, S. Schlenstedt, P. Niessen, D. Bertrand, C. Wiedemann, I. Taboada, R. C. Bay, L. Gerhardt, P. Ekström, David A. Schneider, Ph. Herquet, T. Becka, C. Pérez de los Heros, Xinhua Bai, T. Messarius, G. C. Hill, Kael Hanson, C. Wiebusch, S. Böser, Todor Stanev, Staffan Carius, K. Rawlins, R. Schwarz, Ph. Olbrechts, Heiko Geenen, Matthias Leuthold, D. R. Nygren, M. Gaug, James Madsen, Paolo Desiati, K. H. Sulanke, D. Steele, P. Steffen, Jodi Cooley, R. Porrata, R. Ganugapati, C. P. McParland, R. Engel, A. Biron, Elisa Bernardini, Hakki Ögelman, Jan Conrad, T. Feser, Kyle T. Mandli, D. F. Cowen, S. Young, Marek Kowalski, P. B. Price, Jim Hinton, A. Goldschmidt, Gerald Przybylski, A. Silvestri, T. O. B. Schmidt, M. Ribordy, M. Hellwig, H. G. Sander, Kurt Woschnagg, L. Köpke, Paul Evenson, B. Hughey, T. Neunhöffer, James Kim, Albrecht Karle, Y. Minaeva, R. Hardtke, Dmitry Chirkin, R. G. Stokstad, K.-H. Becker, R. Wischnewski, S. Richter, I. Liubarsky, J. Rodríguez Martino, Ch. Weinheimer, H. Leich, T. DeYoung, Othmane Bouhali, P. Miocinovic, Wolfgang Rhode, J. Ahrens, A. C. Pohl, Michael Stamatikos, W. Wu, R. Morse, D. Ross, S. Tilav, P. C. Mock, K. Kuehn, K. Schinarakis, H. S. Matis, Freddy Binon, T. Burgess, Francis Halzen, Olga Botner, P. Lindahl, Christian Spiering, K. Rochester, Alan Watson, P. O. Hulth, H. Wissing, Wolfgang Wagner, M. Solarz, Pawel Marciniewski, T. Hauschildt, Anna Davour, J. Lloyd-Evans, Janet Jacobsen, K. Hultqvist, Adam Bouchta, Allan Hallgren, P. Romenesko, Elisa Resconi, D. Martello, T. Castermans, C. De Clercq, S. W. Barwick, C. Walck, Thomas K. Gaisser, G. B. Yodh, S. Hundertmark, J. I. Lamoureux, T. C. Miller, and P. Doksus
Subjects: Antarctic Muon And Neutrino Detector Array, Physics, Nuclear and High Energy Physics, Muon, Detector, Astronomy, Cosmic ray, Particle detector, Air shower, Neutrino detector, Cosmic rays, Neutrino telescopes, Coincident, Instrumentation
Abstract: We report on the analysis of air showers observed in coincidence by the Antarctic Muon and Neutrino detector array (AMANDA-B10) and the South Pole Air Shower Experiment (SPASE-1 and SPASE-2). We discuss the use of coincident events for calibration and survey of the deep AMANDA detector as well as the response of AMANDA to muon bundles. This analysis uses data taken during 1997 when both SPASE-1 and SPASE-2 were in operation to provide a stereo view of AMANDA. © 2003 Elsevier B.V. All rights reserved.
Published: 2004

36. Status of the IceCube Neutrino Observatory

Author: Olga Botner, C. Pérez de los Heros, John N. Bahcall, T. Becka, Othmane Bouhali, K. Hultqvist, R. C. Bay, K. Rawlins, S. Yoshida, M. Ribordy, N. van Eijndhoven, Gerald Przybylski, W Carithers, A. C. Pohl, S. Hundertmark, J. Cavin, A. W. Jones, James Madsen, D. Steele, H. Kawai, C. P. McParland, H. S. Matis, Ph. Herquet, J. I. Lamoureux, G. W. Sullivan, Soebur Razzaque, R. Paulos, R. G. Stokstad, Anna Davour, A. Goldschmidt, R. Wischnewski, J. Pretz, Ph. Olbrechts, Francis Halzen, R. H. Minor, Kael Hanson, R. Ganugapati, T. Hauschildt, Janet Jacobsen, D. F. Cowen, M. Solarz, Marek Kowalski, K.-H. Becker, Adam Bouchta, R. Schwarz, R. M. Gunasingha, Y. Minaeva, S. Patton, P. B. Price, Paolo Desiati, Allan Hallgren, R.-R Wang, Christian Bohm, Michael Stamatikos, R. Hardtke, George Japaridze, David A. Schneider, J. A. Goodman, Kurt Woschnagg, Hakki Ögelman, P. Niessen, D. Hubert, Wolfgang Wagner, K. Helbing, D. Berley, G. C. Hill, Paul Evenson, Todor Stanev, I. Taboada, S. Schlenstedt, C. Wiedemann, Christian Spiering, P. O. Hulth, H. Miyamoto, Dmitry Chirkin, Elisa Resconi, D. Seckel, Jean Gallagher, L. Köpke, Heiko Geenen, A. R. Fazely, H. Leich, H. Wissing, S. Tilav, N. Kitamura, R. Nahnhauer, Elisa Bernardini, J. Ahrens, D. R. Nygren, T. Neunhöffer, C. Walck, T. Messarius, K. Schinarakis, P. Steffen, Albrecht Karle, Thomas K. Gaisser, Jodi Cooley, Xinhua Bai, Jan Conrad, T. Feser, Wolfgang Rhode, T. J. Sumner, T. Castermans, Peter Mészáros, C. De Clercq, W. Chinowsky, D. Bertrand, S. Richter, M. Hellwig, R. W. Ellsworth, H. G. Sander, B. Collin, I. Liubarsky, C. H. Wiebusch, R. Morse, T. Stezelberger, D. Hays, R. Ehrlich, S. Böser, A. J. Smith, K. H. Sulanke, T. Burgess, M. Kestel, T. DeYoung, E. Blaufuss, D. Z. Besson, D. J. Boersma, Glenn Spiczak, B. Hughey, R. Koch, and P. Miocinovic
Subjects: Physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astronomy and Astrophysics, Astrophysics, Solar neutrino problem, IceCube Neutrino Observatory, law.invention, Telescope, Neutrino detector, Space and Planetary Science, law, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Neutrino astronomy
Abstract: The IceCube neutrino telescope, to be constructed near the Antarctic South Pole, represents the next generation of neutrino telescope. Its large 1 km3 size will make it uniquely sensitive to the detection of neutrinos from astrophysical sources. The current design of the detector is presented. The basic performance of the detector and its ability to search for neutrinos from various astrophysical sources has been studied using detailed simulations and is discussed.
Published: 2004

37. Physics and Results from the AMANDA-II High Energy Neutrino Telescope

Author: H. G. Sander, P. Ekström, R. Schwarz, M. Kowalski, P. Lindahl, Staffan Carius, X. Bai, P. O. Hulth, T. Hauschildt, Kyler Kuehn, Allan Hallgren, H. S. Matis, C. Wiedemann, P. B. Price, H. Wissing, P. Miocinovic, C. Walck, Stefan Richter, Thomas K. Gaisser, G. B. Yodh, C. Pérez de los Heros, S. Böser, M. Gaug, M. Hellwig, Dmitry Chirkin, Gerald Przybylski, A. Silvestri, Francis Halzen, S. Hundertmark, Matthias Leuthold, K. Hultqvist, M. Solarz, Kael Hanson, Elisa Bernardini, Kyle T. Mandli, Elisa Resconi, D. R. Nygren, P. Doksus, K. Rawlins, M. Ribordy, Olga Botner, T. Castermans, P. Steffen, Hakki Ögelman, J. Rodríguez Martino, T. Messarius, Jan Conrad, T. Feser, C. De Clercq, R. Nahnhauer, Steven W. Barwick, Jodi Cooley, J. P Dewulf, S. W. Barwick, S. Young, J. Ahrens, Y. Minaeva, L. Gerhardt, Paolo Desiati, R. G. Stokstad, R. Wischnewski, P. Herquet, Karl-Heinz Sulanke, R. Ganupati, H. Leich, Wolfgang Wagner, T. Burgess, D. Bertrand, R. Morse, J. I. Lamoureux, K. Schinarakis, Freddy Binon, A. C. Pohl, Pawel Marciniewski, P. Sudhoff, Glenn Spiczak, Anna Davour, D. F. Cowen, Donald P. Schneider, T. Neunhöffer, Timothy W. Schmidt, K.-H. Becker, J. Madsen, S. Tilav, C. P. McParland, A. Goldschmidt, A. Biron, C. Spiering, Ph. Olbrechts, A. Karle, Othmane Bouhali, C. H. Wiebusch, G. C. Hill, L. Thollander, Heiko Geenen, Tyce DeYoung, R. Hardtke, I. Taboada, T. Becka, Janet Jacobsen, Wolfgang Rhode, K. Woschnagg, D. Ross, P. Niessen, D. Steele, and L. Köpke
Subjects: Physics, Telescope, Neutrino detector, law, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, Measurements of neutrino speed, Astronomy, Neutrino astronomy, Solar neutrino problem, Neutrino, Neutrino oscillation, law.invention
Abstract: This paper briefly describes the principle of operation and science goals of the AMANDA high energy neutrino telescope located at the South Pole, Antarctica. Results from an earlier phase of the telescope, called AMANDA-BIO, demonstrate both reliable operation and the broad astrophysical reach of this device, which includes searches for a variety of sources of ultrahigh energy neutrinos: generic point sources, Gamma-Ray Bursts and diffuse sources. The predicted sensitivity and angular resolution of the telescope were confirmed by studies of atmospheric muon and neutrino backgrounds. We also report on the status of the analysis from AMANDA-II, a larger version with far greater capabilities. At this stage of analysis, details of the ice properties and other systematic uncertainties of the AMANDA-II telescope are under study, but we have made progress toward critical science objectives. In particular, we present the first preliminary flux limits from AMANDA-II on the search for continuous emission from astrophysical point sources, and report on the search for correlated neutrino emission from Gamma Ray Bursts detected by BATSE before decommissioning in May 2000. During the next two years, we expect to exploit the full potential of AMANDA-II with the installation of a new data acquisition system that records full waveforms from the in-ice optical sensors.
Published: 2003

38. Search for low-mass weakly interacting massive particles with SuperCDMS

Author: B. Shank, Betty A. Young, D. Brandt, A. Leder, B. Loer, J. Beaty, B. Serfass, S. Upadhyayula, R. Agnese, A. Phipps, T. Hofer, D. Balakishiyeva, H. Chagani, R. Mahapatra, A. Jastram, A. Kennedy, Miguel Daal, R. Bunker, Y. Ricci, R. H. Nelson, S. Fallows, D. N. Seitz, Blas Cabrera, M. Platt, R. Partridge, A. Reisetter, H. R. Harris, M. Kiveni, L. Esteban, E. Lopez Asamar, S. Scorza, Matt Pyle, S. A. Hertel, B. Welliver, Yan Chen, W. Rau, R. Basu Thakur, A. W. Borgland, K. Koch, K. L. Page, Cristián Martínez, Vuk Mandic, J. Sander, K. Prasad, P. Di Stefano, L. Novak, Jodi Cooley, M. H. Kelsey, Danielle Speller, N. Mirabolfathi, Douglas Wright, S. J. Yellin, David G. Cerdeño, B. Kara, M. A. Bowles, M. Ruschman, A. N. Villano, Robert A. Moffatt, R. Resch, B. A. Hines, Sissel Hansen, O. Kamaev, E. Do Couto E Silva, G. Godfrey, J. Zhang, D. Devaney, L. Hsu, Kevin A. McCarthy, S. Kenany, P. Redl, M. Asai, T. Doughty, Adam Anderson, J. Hall, J. J. Yen, J. Billard, B. Cornell, C. H. Crewdson, Donald J. Holmgren, M. Pepin, Bernard Sadoulet, R. Schmitt, D. A. Bauer, Enectali Figueroa-Feliciano, Tarek Saab, Martin E. Huber, P. Cushman, K. Schneck, R. W. Schnee, P. L. Brink, David O. Caldwell, M. Cherry, Sunil Golwala, H. Qiu, and Astrid Tomada
Subjects: Nuclear physics, Physics, Particle physics, WIMP, Scattering, Weakly interacting massive particles, Signal region, Dark matter, General Physics and Astronomy, Parameter space, Low Mass
Abstract: We report a first search for weakly interacting massive particles (WIMPs) using the background rejection capabilities of SuperCDMS. An exposure of 577 kg days was analyzed for WIMPs with mass
Published: 2014

39. Detector Fabrication Yield for SuperCDMS Soudan

Author: W. Rau, Blas Cabrera, J. Hall, Matthew Fritts, Vuk Mandic, D. Balakishiyeva, S. Scorza, B. Welliver, B. A. Hines, S. A. Hertel, Miguel Daal, A. N. Villano, Sunil Golwala, N. Mirabolfathi, E. Do Couto E Silva, Enectali Figueroa-Feliciano, M. Cherry, D. A. Bauer, Kevin A. McCarthy, J. J. Yen, P. L. Brink, J. Zhang, B. Shank, Matt Pyle, R. Radpour, A. Reisetter, Bernard Sadoulet, H. Qiu, J. Beaty, B. Kara, J. Sander, Bruno Serfass, R. Resch, O. Kamaev, S. Kenany, R. Mahapatra, Astrid Tomada, T. Doughty, R. H. Harris, Jodi Cooley, Steven W. Leman, R. Partridge, Betty A. Young, P. Cushman, Tarek Saab, R. W. Schnee, Martin E. Huber, R. Schmitt, G. Godfrey, L. Hsu, D. Brandt, L. Novak, Adam Anderson, H. Chagani, and D. N. Seitz
Subjects: Physics, Fabrication, Yield (engineering), business.industry, Detector, Dark matter, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Underground laboratory, Interdigitated electrode, Optoelectronics, General Materials Science, Direct search, business
Abstract: The SuperCDMS collaboration is presently operating a 9 kg Ge payload at the Soudan Underground Laboratory in their direct search for dark matter. The Ge detectors utilize double-sided athermal phonon sensors with an interdigitated electrode structure (iZIPs) to reject near-surface electron-recoil events. These detectors each have a mass of 0.6 kg and were fabricated with photolithographic techniques. The detector fabrication advances required and the production yield encountered are described.
Published: 2014

40. Silicon detector dark matter results from the final exposure of CDMS II

Author: Matthew Fritts, Jeffrey P. Filippini, G.L. Godfrey, Jodi Cooley, M. H. Kelsey, Vuk Mandic, K. Prasad, S. A. Hertel, P. L. Brink, David O. Caldwell, Y. Ricci, T. Hofer, P. Nadeau, Steven W. Leman, M. Kos, B. Shank, D. Balakishiyeva, Martin E. Huber, Donald J. Holmgren, P. Cushman, J. Sander, K. Koch, A. W. Borgland, C. H. Crewdson, D. A. Bauer, L. Esteban, Miguel Daal, R. Basu Thakur, R. Partridge, A. Jastram, K. L. Page, S. Scorza, P. Redl, B. Loer, J. Hall, B. Serfass, R. H. Harris, Cristián Martínez, David Moore, Robert A. Moffatt, Bernard Sadoulet, S. Arrenberg, P. Kim, K. Schneck, J. J. Yen, H. Qiu, B. Kara, Z. Ahmed, R. Bunker, A. N. Villano, T. Bruch, B. Welliver, Betty A. Young, Sunil Golwala, A. Kennedy, Danielle Speller, David G. Cerdeño, N. Mirabolfathi, Douglas Wright, A. Reisetter, B. Cornell, Blas Cabrera, A. Phipps, K. M. Sundqvist, L. Hsu, W. Rau, R. Mahapatra, Kevin A. McCarthy, H. Chagani, R. W. Schnee, J. Fox, O. Kamaev, J. Zhang, F. DeJongh, E. Do Couto E Silva, Adam Anderson, D. Brandt, R. Agnese, S. Fallows, Enectali Figueroa-Feliciano, M. Kiveni, S. J. Yellin, Matt Pyle, E. Lopez Asamar, Tarek Saab, J. Yoo, J. Billard, M. Pepin, R. H. Nelson, T. Doughty, and UAM. Departamento de Física Teórica
Subjects: Particle physics, Physics - Instrumentation and Detectors, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Dark matter, FOS: Physical sciences, General Physics and Astronomy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Recoil, WIMP, 0103 physical sciences, Neutron, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Physics, 010308 nuclear & particles physics, Física, Instrumentation and Detectors (physics.ins-det), Confidence interval, Semiconductor detector, Likelihood-ratio test, Weakly interacting massive particles, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We report results of a search for Weakly Interacting Massive Particles (WIMPS) with the silicon detectors of the CDMS II experiment. This blind analysis of 140.2 kg-days of data taken between July 2007 and September 2008 revealed three WIMP-candidate events with a surface-event background estimate of 0.41^{+0.20}_{-0.08}(stat.)^{+0.28}_{-0.24}(syst.). Other known backgrounds from neutrons and 206Pb are limited to < 0.13 and, 5 pages, 4 figures, as accepted by PRL
Published: 2013

41. Demonstration of surface electron rejection with interleaved germanium detectors for dark matter searches

Author: C. J. Kenney, R. Partridge, R. Mahapatra, S. Fallows, R. Basu Thakur, S. Kenany, T. Doughty, Jodi Cooley, Adam Anderson, Jean-Paul Fox, K. L. Page, B. Shank, A. Jastram, D. A. Bauer, S. A. Hertel, Enectali Figueroa-Feliciano, K. Schneck, Jie Zhang, B. Loer, B. Serfass, H. R. Harris, S. J. Yellin, E. Lopez Asamar, O. Kamaev, L. Esteban, B. Kara, S. Scorza, P. Nadeau, A. Phipps, A. Kennedy, Jasmine Hasi, A. N. Villano, Danielle Speller, P. L. Brink, R. Resch, R. W. Schnee, M. H. Kelsey, Matthew Fritts, Y. Ricci, David G. Cerdeño, R. Radpour, B. Cornell, Blas Cabrera, Vuk Mandic, B. Welliver, R. Schmitt, David O. Caldwell, P. Redl, Sunil Golwala, P. Cushman, M. Kiveni, K. Prasad, Tarek Saab, Matt Pyle, Cristián Martínez, Donald J. Holmgren, Kevin A. McCarthy, P. C. F. Di Stefano, Betty A. Young, E. Do Couto E Silva, C. H. Crewdson, A. W. Borgland, T. Hofer, D. Balakishiyeva, M. Daal, R. Bunker, B. A. Hines, Robert A. Moffatt, Bernard Sadoulet, A. Reisetter, R. Nelson, David Moore, W. Rau, N. Mirabolfathi, R. Agnese, M. Pepin, J. J. Yen, M. Cherry, J. Sander, J. Hall, Astrid Tomada, M. E. Huber, D. Wright, H. Chagani, K. Koch, L. Novak, D. N. Seitz, H. Qiu, G. Godfrey, L. Hsu, D. Brandt, UAM. Departamento de Física Teórica, Massachusetts Institute of Technology. Department of Physics, Anderson, Adam Jonathan, Figueroa-Feliciano, Enectali, Hertel, Scott Alexander, and McCarthy, Kevin Ahmad
Subjects: Particle physics, Ionization, Technology, Physics - Instrumentation and Detectors, Physics and Astronomy (miscellaneous), astro-ph.GA, Dark matter, FOS: Physical sciences, chemistry.chemical_element, Cosmic ray, Germanium, Electron, Cryogenics, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Engineering, 0103 physical sciences, 010306 general physics, Electrodes, physics.ins-det, Leakage (electronics), Applied Physics, Physics, 010308 nuclear & particles physics, hep-ex, Detector, Física, Instrumentation and Detectors (physics.ins-det), Astrophysics - Astrophysics of Galaxies, Semiconductor detector, chemistry, Lead, Astrophysics of Galaxies (astro-ph.GA), Physical Sciences, Surface ionization
Abstract: The SuperCDMS experiment in the Soudan Underground Laboratory searches for dark matter with a 9-kg array of cryogenic germanium detectors. Symmetric sensors on opposite sides measure both charge and phonons from each particle interaction, providing excellent discrimination between electron and nuclear recoils, and between surface and interior events. Surface event rejection capabilities were tested with two [superscript 210] Pb sources producing ∼130 beta decays/hr. In ∼800 live hours, no events leaked into the 8–115 keV signal region, giving upper limit leakage fraction 1.7 × 10[superscript −5] at 90% C.L., corresponding to, United States. Dept. of Energy (Contract No. DE-AC03-76SF00098), United States. Dept. of Energy (Contract No. DE-FG02-92ER40701), United States. Dept. of Energy (Contract No. DE-FG02-94ER40823), United States. Dept. of Energy (Contract No. DE-FG03-90ER40569), United States. Dept. of Energy (Contract No. DE-FG03-91ER40618), United States. Dept. of Energy (Contract No. DE-SC0004022), National Science Foundation (U.S.) (Grant No. AST-9978911), National Science Foundation (U.S.) (Grant No. NSF-0847342), National Science Foundation (U.S.) (Grant No. PHY-1102795), National Science Foundation (U.S.) (Grant No. NSF-1151869), National Science Foundation (U.S.) (Grant No. PHY-0542066), National Science Foundation (U.S.) (Grant No. PHY-0503729), National Science Foundation (U.S.) (Grant No. PHY-0503629), National Science Foundation (U.S.) (Grant No. PHY-0503641), National Science Foundation (U.S.) (Grant No. PHY-0504224), National Science Foundation (U.S.) (Grant No. PHY-0705052), National Science Foundation (U.S.) (Grant No. PHY-0801708), National Science Foundation (U.S.) (Grant No. PHY-0801712), National Science Foundation (U.S.) (Grant No. PHY-0802575), National Science Foundation (U.S.) (Grant No. PHY-0847342), National Science Foundation (U.S.) (Grant No. PHY-0855299), National Science Foundation (U.S.) (Grant No. PHY-0855525), National Science Foundation (U.S.) (Grant No. PHY-1205898)
Published: 2013

42. Search for low-mass weakly interacting massive particles using voltage-assisted calorimetric ionization detection in the SuperCDMS experiment

Author: H. R. Harris, B. Welliver, Enectali Figueroa-Feliciano, S. A. Hertel, A. Jastram, L. Hsu, K. Schneck, R. Partridge, P. Nadeau, C. H. Crewdson, N. Mirabolfathi, Sunil Golwala, Douglas Wright, R. W. Schnee, T. Doughty, Bernard Sadoulet, Adam Anderson, B. Cornell, R. Agnese, E. Lopez Asamar, A. N. Villano, K. Koch, David G. Cerdeño, R. Basu Thakur, K. L. Page, Betty A. Young, D. A. Bauer, J. Billard, P. L. Brink, M. Kiveni, Jodi Cooley, S. Fallows, R. Bunker, Matt Pyle, Kevin A. McCarthy, A. Phipps, P. Redl, M. H. Kelsey, O. Kamaev, J. Zhang, Danielle Speller, David Moore, A. Reisetter, P. Cushman, M. Pepin, Y. Ricci, J. J. Yen, W. Rau, L. Esteban, S. J. Yellin, G.L. Godfrey, Cristián Martínez, Tarek Saab, D. O. Caldwell, Vuk Mandic, M. Asai, M. A. Bowles, D. Brandt, K. Prasad, Robert A. Moffatt, J. Sander, H. Chagani, S. Scorza, R. H. Nelson, H. Qiu, Martin E. Huber, P. Di Stefano, J. Hall, A. Kennedy, Blas Cabrera, B. Shank, B. Loer, B. Serfass, T. Hofer, D. Balakishiyeva, Miguel Daal, Donald J. Holmgren, A. W. Borgland, B. Kara, R. Mahapatra, and UAM. Departamento de Física Teórica
Subjects: Physics, Particle physics, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Dark matter, Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, Física, Electron, Astrophysics::Cosmology and Extragalactic Astrophysics, 7. Clean energy, WIMP, Ionization, Weakly interacting massive particles, High Energy Physics::Experiment, Cryogenic Dark Matter Search, Electron equivalent
Abstract: SuperCDMS is an experiment designed to directly detect weakly interacting massive particles (WIMPs), a favored candidate for dark matter ubiquitous in the Universe. In this Letter, we present WIMP-search results using a calorimetric technique we call CDMSlite, which relies on voltage-assisted Luke-Neganov amplification of the ionization energy deposited by particle interactions. The data were collected with a single 0.6 kg germanium detector running for ten live days at the Soudan Underground Laboratory. A low energy threshold of 170 eVee (electron equivalent) was obtained, which allows us to constrain new WIMP-nucleon spin-independent parameter space for WIMP masses below 6 GeV/c2, Funding and support were received from the National Science Foundation, the Department of Energy, a Fermilab URA Visiting Scholar Award, NSERC Canada, and MULTIDARK. Fermilab is operated by the Fermi Research Alliance, LLC under Contract No. De-AC02- 07CH11359. SLAC is operated under Contract No. DEAC02- 76SF00515 with the United States Department of Energy
Published: 2013

43. Characterization, performance, and future advanced analysis of detectors in the cryogenic dark matter search (CDMS-II)

Author: Thushara Perera, S. J. Yellin, J. Sander, C. N. Bailey, Chihway Chang, R. H. Nelson, Sunil Golwala, M. J. Attisha, Tarek Saab, P. Meunier, S. Leclercq, M. R. Dragowsky, J. P. F. Thompson, N. Mirabolfathi, E. J. Ramberg, R. Ferril, S. Kamat, D. O. Caldwell, Betty A. Young, R. J. Gaitskell, D. S. Akerib, K. M. Sundqvist, Donald J. Holmgren, R. W. Ogburn, Jeffrey P. Filippini, P. L. Brink, H. N. Nelson, M. B. Crisler, J. Yoo, Ronald R. Ross, R. Hennings-Yeomans, M. Pyle, Darren Grant, Vuk Mandic, L. Duong, Miguel Daal, Martin E. Huber, P. P. Brusov, D. N. Seitz, D. A. Bauer, R. Mahapatra, A. Reisetter, A. Lu, Bernard Sadoulet, G. Wang, C. Savage, Laura Baudis, R. Bunker, R. L. Dixon, Blas Cabrera, Jodi Cooley, R. W. Schnee, D. D. Driscoll, P. Cushman, and Bruno Serfass
Subjects: Physics, Data set, Nuclear and High Energy Physics, Particle physics, Cold dark matter, Detector, Cryogenic Dark Matter Search, Current (fluid), Instrumentation, Characterization (materials science)
Abstract: We present the techniques and results of the calibrations and surface-event rejection cut for the current CDMS-II data set, along with proposals for future analysis of CDMS-II data.
Published: 2006

44. Limits on WIMP–nucleon interactions from the Cryogenic Dark Matter Search at the Soudan Underground Laboratory

Author: P. Meunier, R. W. Ogburn, S. Leclercq, M. R. Dragowsky, C. L. Chang, N. Mirabolfathi, M. B. Crisler, D. O. Caldwell, A. Reisetter, C. N. Bailey, M. Pyle, Jeffrey P. Filippini, R. Hennings-Yeomans, E. J. Ramberg, Darren Grant, D. N. Seitz, R. H. Nelson, Miguel Daal, R. Bunker, J. P. F. Thompson, H. N. Nelson, R. L. Dixon, L. Duong, R. J. Gaitskell, S. Kamat, Martin E. Huber, A. Lu, J. Sander, Thushara Perera, Donald J. Holmgren, S. J. Yellin, Betty A. Young, R. W. Schnee, Ronald R. Ross, D. D. Driscoll, G. Wang, K. M. Sundqvist, P. Cushman, Bernard Sadoulet, R. Mahapatra, R. Ferril, M. J. Attisha, C. Savage, Laura Baudis, P. L. Brink, Bruno Serfass, D. A. Bauer, Vuk Mandic, P. P. Brusov, Sunil Golwala, D. S. Akerib, Jodi Cooley, J. Yoo, and Blas Cabrera
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Large Underground Xenon experiment, Physics::Instrumentation and Detectors, Axion Dark Matter Experiment, Dark matter, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, WIMP, Weakly interacting massive particles, Warm dark matter, High Energy Physics::Experiment, Cryogenic Dark Matter Search, Instrumentation, Light dark matter
Abstract: We present the results of the first two data runs of the Cryogenic Dark Matter Search at Soudan Underground Laboratory. These data exclude substantial new parameter space for both spin-independent and spin-dependent WIMP–nucleon interactions within the standard halo model.
Published: 2006

45. The SuperCDMS proposal for dark matter detection

Author: Betty A. Young, Jeffrey P. Filippini, K. M. Sundqvist, R. Bunker, L. Duong, Blas Cabrera, P. P. Brusov, Martin E. Huber, E. J. Ramberg, R. W. Schnee, A. Reisetter, M. R. Dragowsky, J. Yoo, Bernard Sadoulet, M. J. Attisha, J. P. F. Thompson, J. Sander, D. O. Caldwell, P. Cushman, C. N. Bailey, R. Hennings-Yeomans, Darren Grant, D. A. Bauer, P. L. Brink, Jodi Cooley, Peter Denes, R. J. Gaitskell, Laura Baudis, R. Mahapatra, Sunil Golwala, D. S. Akerib, Kent D. Irwin, Donald J. Holmgren, A. Lu, P. Meunier, R. W. Ogburn, H. N. Nelson, D. N. Seitz, N. Mirabolfathi, C. L. Chang, S. J. Yellin, M. B. Crisler, Tarek Saab, and Bruno Serfass
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Cold dark matter, Large Underground Xenon experiment, WIMP, Weakly interacting massive particles, Dark matter, Warm dark matter, Cryogenic Dark Matter Search, Instrumentation, Light dark matter
Abstract: Presently the CDMS-II collaboration's Weakly Interacting Massive Particle (WIMP) search at the Soudan Underground Laboratory sets the most stringent exclusion limits of any WIMP cold dark matter direct-detection experiment. To extend our reach further, to WIMP-nucleon cross-sections in the range 10 - 46 - 10 - 44 cm 2 , we propose SuperCDMS, which would take advantage of a very deep site. One promising site is the recently approved SNOLab facility in Canada. In this paper we will present our overall program and focus on phase A of SuperCDMS.
Published: 2006

46. First test runs of a dark-matter detector with interleaved ionization electrodes and phonon sensors for surface-event rejection

Author: N. Mirabolfathi, J. P. Castle, P. L. Brink, Betty A. Young, K. M. Sundqvist, Astrid Tomada, Jodi Cooley, P. Meunier, L. Novak, R. W. Ogburn, D. S. Akerib, Bruno Serfass, D. N. Seitz, M. Pyle, Blas Cabrera, Jeffrey P. Filippini, R. W. Schnee, R. Hennings-Yeomans, Darren Grant, Bernard Sadoulet, C. N. Bailey, M. R. Dragowsky, and J. Ruderman
Subjects: Physics, Nuclear and High Energy Physics, Phonon, business.industry, Detector, Signal, Crystal, Optics, Electric field, Ionization, Electrode, business, Instrumentation, Event (particle physics)
Abstract: To improve surface event rejection for the SuperCDMS experiment, we have designed, fabricated and tested a new detector concept where ionization electrodes are interleaved with phonon sensors on both sides of the detector. This i-(interleaved)-ZIP concept has electrical fields tangential to all detector surfaces. A surface event will produce an ionization signal in one charge read out channel, whereas an event within the bulk of the crystal will cause a signal in both charge read out channels. In addition, the symmetric phonon channels on both sides of the crystal, two semicircles on one side for x and two on the other for y , allow three-dimensional reconstruction of event locations through time delays and relative energy collection between the four phonon channels. Preliminary results from a 100 g Si prototype are presented.
Published: 2006

47. Publisher’s Note: Silicon detector results from the first five-tower run of CDMS II [Phys. Rev. D88, 031104(R) (2013)]

Author: B. Welliver, A. N. Villano, E. Do Couto E Silva, D. Brandt, Kevin A. McCarthy, F. DeJongh, K. Koch, J. Hall, P. Redl, L. Hsu, David Moore, W. Rau, R. H. Harris, R. H. Nelson, Jeffrey P. Filippini, Tarek Saab, G.L. Godfrey, Douglas Wright, S. Scorza, J. Sander, Sunil Golwala, P. Di Stefano, Martin E. Huber, D. O. Caldwell, Betty A. Young, A. W. Borgland, R. Mahapatra, J. Zhang, A. Phipps, K. M. Sundqvist, Danielle Speller, Robert A. Moffatt, R. Basu Thakur, K. L. Page, K. Schneck, C. H. Crewdson, Donald J. Holmgren, R. Agnese, M. Pepin, Y. Ricci, Adam Anderson, S. Arrenberg, R. Bunker, P. L. Brink, Peter S. Kim, L. Esteban, S. A. Hertel, Cristián Martínez, M. Kos, P. Nadeau, Z. Ahmed, David G. Cerdeño, J. Yoo, H. Chagani, Bernard Sadoulet, S. J. Yellin, B. Kara, R. Partridge, R. W. Schnee, Steven W. Leman, B. Cornell, P. Cushman, H. Qiu, Jodi Cooley, M. H. Kelsey, T. Hofer, D. Balakishiyeva, Miguel Daal, Enectali Figueroa-Feliciano, T. Doughty, O. Kamaev, M. Pyle, J. J. Yen, Jean-Paul Fox, B. Shank, S. Fallows, A. Kennedy, Blas Cabrera, N. Mirabolfathi, T. Bruch, Bruno Serfass, M. Kiveni, A. Jastram, A. Reisetter, Matthew Fritts, E. Lopez-Asamar, Vuk Mandic, K. Prasad, and D. A. Bauer
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Dark matter, Silicon detector, Tower (mathematics)
Published: 2013

48. Overview of Direct Detection Dark Matter Experiments

Author: Jodi Cooley
Subjects: Physics, Particle physics, Dark matter, Experimental methods
Published: 2013

49. SuperCDMS status from Soudan and plans for SNOLab

Author: K. L. Page, W. Rau, N. Mirabolfathi, B. Loer, B. Serfass, R. Bunker, Donald J. Holmgren, A. Reisetter, S. A. Hertel, R. Mahapatra, J. Yoo, R. Moffat, K. Koch, S. Scorza, Tarek Saab, A. Jastram, Jasmine Hasi, B. Kara, R. Resch, C. H. Crewdson, R. H. Nelson, Adam Anderson, P. Di Stefano, P. Nadeau, Blas Cabrera, B. Shank, M. Kiveni, D. O. Caldwell, A. N. Villano, G.L. Godfrey, J. Zhang, Matt Pyle, S. Liu, S. Arrenberg, X. Qiu, Bernard Sadoulet, Matthew Fritts, Vuk Mandic, Martin E. Huber, J. Sander, K. Prasad, Kevin A. McCarthy, Jodi Cooley, M. H. Kelsey, Betty A. Young, J. Hall, D. Brandt, L. Hsu, M. Pepin, Y. Ricci, A. Phipps, K. M. Sundqvist, Peter S. Kim, David Moore, Cristián Martínez, T. Doughty, Danielle Speller, D. A. Bauer, R. Radpour, H. Qiu, B. Cornell, B. Welliver, R. Partridge, T. Hofer, L. Esteban, D. Balakishiyeva, M. Kos, Miguel Daal, Enectali Figueroa-Feliciano, E. Do Couto E Silva, S. Fallows, S. J. Yellin, P. L. Brink, K. Shneck, H. Chagani, Sunil Golwala, R. B. Thakur, J. Fox, Steven W. Leman, P. Cushman, R. W. Schnee, David G. Cerdeño, O. Kamaev, J. J. Yen, Z. Ahmed, Szczerbinska, B., Babu, K., Balantekin, B., Dutta, B., Mohapatra, R., Szczerbinska, Barbara, Babu, Kaladi, Balantekin, Baha, Dutta, Bhaskar, and Mohapatra, Rabindra N.
Subjects: Physics, Physics::Instrumentation and Detectors, media_common.quotation_subject, Dark matter, Astrophysics::Instrumentation and Methods for Astrophysics, Elementary particle, Cosmological constant, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Cosmology, Universe, WIMP, Weakly interacting massive particles, Light dark matter, media_common
Abstract: Matter, as we know it, makes up less than 5% of the Universe. Various astrophysical observations have confirmed that one quarter of the Universe and most of the matter content in the Universe is made up of Dark Matter. The nature of Dark Matter is yet to be discovered and is one of the biggest questions in Physics. Particle Physics combined with astrophysical measurements of the abundance gives rise to a Dark Matter candidate called Weakly Interacting Massive Particle (WIMP). The low density of WIMPs in the galaxies and the extremely weak nature of the interaction with ordinary matter make detection of the WIMP an extraordinarily challenging task, with abundant fakes from various radioactive and cosmogenic backgrounds with much stronger electromagnetic interaction. The extremely weak nature of the WIMP interaction dictates detectors that have extremely low naturally occurring radioactive background, a large active volume (mass) of sensitive detector material to maximize statistics, a highly efficient detector based rejection mechanism for the dominant electromagnetic background and sophisticated analysis techniques to reject any residual background. This paper describes the status of the SuperCDMS experiment.
Published: 2013

50. Screening materials with the XIA UltraLo alpha particle counter at Southern Methodist University

Author: R. W. Schnee, S. Scorza, Keith Rielage, Jodi Cooley, B. Kara, M. Nakib, V. E. Guiseppe, and H. Qiu
Subjects: Nuclear physics, Physics, chemistry, Production model, Measuring instrument, chemistry.chemical_element, Radon, Alpha particle, Electron drift, Particle detector
Abstract: Southern Methodist University houses one of five existing commercially available UltraLo 1800 production model alpha counters made by XIA LLC. The instrument has an electron drift chamber with a 707 cm2 or 1800 cm2 counting region which is determined by selecting the inner electrode size. The SMU team operating this device is part of the SuperCDMS screening working group, and uses the alpha counter to study the background rates from the decay of radon in materials used to construct the SuperCDMS experiment. We have studied four acrylic samples obtained from the MiniCLEAN direct dark matter search with the XIA instrument demonstrating its utility in low background experiments by investigating the plate-out of 210Pb and comparing the effectiveness of cleaning procedures in removing 222Rn progenies from the samples.
Published: 2013

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Publication Type

Journal

Database

Publisher

88 results on '"Jodi Cooley"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources