Author
T. Caldwell
Other affiliations: University of Pennsylvania
Bio: T. Caldwell is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Dark matter & Detector. The author has an hindex of 6, co-authored 8 publications receiving 333 citations. Previous affiliations of T. Caldwell include University of Pennsylvania.
Papers
More filters
Boston University1, University of Waterloo2, Perimeter Institute for Theoretical Physics3, Massachusetts Institute of Technology4, Joseph Fourier University5, University of California, Los Angeles6, Occidental College7, University of Pennsylvania8, University of Zaragoza9, University of Sheffield10, Brandeis University11, Harvard University12, Nagasaki Institute of Applied Science13, University of Edinburgh14, University of New Mexico15, University of Huelva16, University of Utah17, University of Nottingham18, Kyoto University19, Lawrence Berkeley National Laboratory20, Temple University21, University of Warwick22, New York University23, Nagoya University24, University of Tokyo25, Saga University26, University of Ioannina27
TL;DR: The case for a dark matter detector with directional sensitivity was presented at the 2009 CYGNUS workshop on directional dark matter detection, and contributions from theorists and experimental groups in the field as mentioned in this paper.
Abstract: We present the case for a dark matter detector with directional sensitivity. This document was developed at the 2009 CYGNUS workshop on directional dark matter detection, and contains contributions from theorists and experimental groups in the field. We describe the need for a dark matter detector with directional sensitivity; each directional dark matter experiment presents their project's status; and we close with a feasibility study for scaling up to a one ton directional detector, which would cost around $150M.
224 citations
TL;DR: In this paper, the authors present the first dark matter limit from DMTPC from a surface run at MIT, in an analysis window of 80-200 keV recoil energy, based on a 35.7 g-day exposure, they set a 90% C.L. upper limit on the spin-dependent WIMP-proton cross section of 2.0 × 10 − 33 cm 2 for 115 GeV/c2 dark matter particle mass.
80 citations
Los Alamos National Laboratory1, University of New Mexico2, Massachusetts Institute of Technology3, Royal Holloway, University of London4, University of Pennsylvania5, Syracuse University6, National Institute of Standards and Technology7, Boston University8, University of South Dakota9, University of North Carolina at Chapel Hill10, Yale University11, University of California, Berkeley12
TL;DR: The MiniCLEAN experiment as discussed by the authors utilizes over 500 kg of liquid cryogen to detect nuclear recoils from WIMP dark matter and serves as a demonstration for a future detector of order 50 to 100 tonnes.
18 citations
01 Jan 2010
TL;DR: In this paper, a direction sensitive detector using a low-density CF4 gas with a 10 liter fiducial volume is operated for several weeks in a basement laboratory and initial results confirm good detector performance and set preliminary limits on spin-dependent dark matter interactions.
Abstract: The known direction of motion of dark matter particles relative to the Earth may be a key for their unambiguous identification even in the presence of backgrounds. A direction-sensitive detector prototype using a low-density CF4 gas with a 10 liter fiducial volume is operated for several weeks in a basement laboratory. We present initial results that confirm good detector performance and set preliminary limits on spin-dependent dark matter interactions.
7 citations
Boston University1, Perimeter Institute for Theoretical Physics2, University of Waterloo3, Massachusetts Institute of Technology4, Joseph Fourier University5, University of California, Los Angeles6, Occidental College7, University of Pennsylvania8, University of Zaragoza9, University of Sheffield10, Brandeis University11, Harvard University12, Nagasaki Institute of Applied Science13, University of Edinburgh14, University of New Mexico15, University of Huelva16, University of Utah17, University of Nottingham18, Kyoto University19, Lawrence Berkeley National Laboratory20, Temple University21, University of Warwick22, New York University23, Nagoya University24, University of Tokyo25, Saga University26, University of Ioannina27
TL;DR: The case for a dark matter detector with directional sensitivity was presented at the 2009 CYGNUS workshop on directional dark matter detection, and contributions from theorists and experimental groups in the field as mentioned in this paper.
Abstract: We present the case for a dark matter detector with directional sensitivity. This document was developed at the 2009 CYGNUS workshop on directional dark matter detection, and contains contributions from theorists and experimental groups in the field. We describe the need for a dark matter detector with directional sensitivity; each directional dark matter experiment presents their project's status; and we close with a feasibility study for scaling up to a one ton directional detector, which would cost around $150M.
6 citations
Cited by
More filters
University of Amsterdam1, University of Bologna2, University of Mainz3, University of Coimbra4, University of Bern5, Columbia University6, Weizmann Institute of Science7, New York University Abu Dhabi8, University of Zurich9, Rensselaer Polytechnic Institute10, Max Planck Society11, Stockholm University12, University of Nantes13, Karlsruhe Institute of Technology14, University of Münster15, University of Chicago16, Arizona State University17, Purdue University18, Rice University19, University of California, San Diego20, University of Freiburg21, Dresden University of Technology22, Imperial College London23, University of California, Los Angeles24
TL;DR: DARk matter WImp search with liquid xenoN (DARWIN) as mentioned in this paper is an experiment for the direct detection of dark matter using a multi-ton liquid xenon time projection chamber at its core.
Abstract: DARk matter WImp search with liquid xenoN (DARWIN(2)) will be an experiment for the direct detection of dark matter using a multi-ton liquid xenon time projection chamber at its core. Its primary g ...
553 citations
TL;DR: In this paper, the status of direct dark matter searches is summarized, focusing on the detector technologies used to directly detect a dark matter particle producing recoil energies in the keV energy scale.
Abstract: In recent decades, several detector technologies have been developed with the quest to directly detect dark matter interactions and to test one of the most important unsolved questions in modern physics. The sensitivity of these experiments has improved with a tremendous speed due to a constant development of the detectors and analysis methods, proving uniquely suited devices to solve the dark matter puzzle, as all other discovery strategies can only indirectly infer its existence. Despite the overwhelming evidence for dark matter from cosmological indications at small and large scales, clear evidence for a particle explaining these observations remains absent. This review summarises the status of direct dark matter searches, focusing on the detector technologies used to directly detect a dark matter particle producing recoil energies in the keV energy scale. The phenomenological signal expectations, main background sources, statistical treatment of data and calibration strategies are discussed.
395 citations
TL;DR: A review of the physics of direct detection of dark matter, discussing the roles of both the particle physics and astrophysics in the expected signals, is given in this article, where the authors discuss the practical formulas needed to interpret a modulating signal.
Abstract: Direct detection experiments, which are designed to detect the scattering of dark matter off nuclei in detectors, are a critical component in the search for the Universe’s missing matter. This Colloquium begins with a review of the physics of direct detection of dark matter, discussing the roles of both the particle physics and astrophysics in the expected signals. The count rate in these experiments should experience an annual modulation due to the relative motion of the Earth around the Sun. This modulation, not present for most known background sources, is critical for solidifying the origin of a potential signal as dark matter. The focus is on the physics of annual modulation, discussing the practical formulas needed to interpret a modulating signal. The dependence of the modulation spectrum on the particle and astrophysics models for the dark matter is illustrated. For standard assumptions, the count rate has a cosine dependence with time, with a maximum in June and a minimum in December. Well-motivated generalizations of these models, however, can affect both the phase and amplitude of the modulation. Shown is how a measurement of an annually modulating signal could teach us about the presence of substructure in the galactic halo or about the interactions between dark and baryonic matter. Although primarily a theoretical review, the current experimental situation for annual modulation and future experimental directions is briefly discussed.
366 citations
TL;DR: In this paper, the status of direct dark matter searches is summarized, focusing on the detector technologies used to directly detect a dark matter particle producing recoil energies in the keV energy scale.
Abstract: In the past decades, several detector technologies have been developed with the quest to directly detect dark matter interactions and to test one of the most important unsolved questions in modern physics. The sensitivity of these experiments has improved with a tremendous speed due to a constant development of the detectors and analysis methods, proving uniquely suited devices to solve the dark matter puzzle, as all other discovery strategies can only indirectly infer its existence. Despite the overwhelming evidence for dark matter from cosmological indications at small and large scales, a clear evidence for a particle explaining these observations remains absent. This review summarises the status of direct dark matter searches, focussing on the detector technologies used to directly detect a dark matter particle producing recoil energies in the keV energy scale. The phenomenological signal expectations, main background sources, statistical treatment of data and calibration strategies are discussed.
270 citations
TL;DR: For nearly a century, more mass has been measured in galaxies than is contained in the luminous stars and gas as discussed by the authors, and it has become clear that the dark matter in galaxies is not comprised of known astronomical objects or baryonic matter.
265 citations