Browsing FAS Scholarly Articles by Keyword "instrumentation"

Now showing items 1-7 of 7

    • Characterization of the BICEP Telescope for High-precision Cosmic Microwave Background Polarimetry 

      Takahashi, Yuki D.; Ade, Peter; Barkats, Denis; Battle, John O.; Bierman, Evan M.; Bock, James; Chiang, H. Cynthia; Dowell, C. Darren; Duband, Lionel; Hivon, Eric F.; Holzapfel, William L.; Hristov, Victor V.; Jones, William C.; Keating, Brian G.; Kovac, John M; Kuo, Chao-Lin; Lange, Andrew E.; Leitch, Erik M.; Mason, Peter V.; Matsumura, Tomotake; Nguyen, Hien T.; Ponthieu, N.; Pryke, Clement; Richter, Steffen; Rocha, Graca M.; Yoon, Ki Won (IOP Publishing, 2010)
      The Background Imaging of Cosmic Extragalactic Polarization (BICEP) experiment was designed specifically to search for the signature of inflationary gravitational waves in the polarization of the cosmic microwave background ...

    • Decoding the precision of historical temperature observations 

      Rhines, Andrew Nelson; Tingley, Martin; McKinnon, Karen Aline; Huybers, Peter John (Wiley-Blackwell, 2015)
      Historical observations of temperature underpin our ability to monitor Earth’s climate. We identify a pervasive issue in archived observations from surface stations, wherein the use of varying conventions for units and ...

    • Millimeter-Scale Contact Printing of Aqueous Solutions Using a Stamp Made Out of Paper and Tape 

      Cheng, Chao-Min; Mazzeo, Aaron D.; Gong, Jinlong; Martinez, Andres W.; Phillips, Scott T.; Jain, Nina; Whitesides, George M. (Royal Society of Chemistry, 2010)
      This communication describes a simple method for printing aqueous solutions with millimeter-scale patterns on a variety of substrates using an easily fabricated, paper-based microfluidic device (a paper-based “stamp”) as ...

    • Precise Throughput Determination of the PanSTARRS Telescope and the Gigapixel Imager using a Calibrated Silicon Photodiode and a Tunable Laser: Initial Results 

      Stubbs, Christopher William; Doherty, Peter Edward; Cramer, Claire; Narayan, Gautham Siddharth; Brown, Yorke; Lykke, Keith; Woodward, John; Tonry, John (Institute of Physics, 2010)
      We have used a precision calibrated photodiode as the fundamental metrology reference in order to determine the relative throughput of the PanSTARRS telescope and the Gigapixel imager, from 400 nm to 1050 nm. Our technique ...

    • QUaD: A High-Resolution Cosmic Microwave Background Polarimeter 

      Hinderks, James R.; Ade, Peter; Bock, James; Bowden, Melanie; Brown, Michael L.; Cahill, Gary; Carlstrom, John E.; Castro, Patricia G.; Church, Sarah; Culverhouse, Thomas; Friedman, Robert; Ganga, Ken; Gear, Walter K.; Gupta, Sujata; Harris, J.; Haynes, V.; Keating, Brian G.; Kovac, John M; Kirby, E.; Lange, Andrew E.; Leitch, Erik; Mallie, Olivier E.; Melhuish, Simon J.; Memari, Yasin; Murphy, J. Anthony; Orlando, Angiola; Schwarz, Robert; O'Sullivan, Creidhe; Piccirillo, Lucio; Pryke, Clement; Rajguru, Nutan; Rusholme, Ben; Taylor, Andrew N.; Thompson, Keith L.; Tucker, Carole; Turner, Abigail H.; Wu, Ed Y. S.; Zemcov, Michael (IOP Publishing, 2009)
      We describe the QUaD experiment, a millimeter-wavelength polarimeter designed to observe the cosmic microwave background (CMB) from a site at the South Pole. The experiment comprises a 2.64 m Cassegrain telescope equipped ...

    • Scientific Verification Of Faraday Rotation Modulators: Detection Of Diffuse Polarized Galactic Emission 

      Moyerman, S.; Bierman, E.; Ade, P. A. R.; Aiken, R.; Barkats, D.; Bischoff, Colin A.; Bock, J. J.; Chiang, H. C.; Dowell, C. D.; Duband, L.; Hivon, E. F.; Holzapfel, W. L.; Hristov, V. V.; Jones, W. C.; Kaufman, J.; Keating, B. G.; Kovac, John M; Kuo, C. L.; Leitch, E. M.; Mason, P. V.; Matsumura, T.; Nguyen, H. T.; Ponthieu, N.; Pryke, C.; Richter, S.; Rocha, G.; Sheehy, C.; Takahashi, Y. D.; Tolan, J. E.; Wollack, E.; Yoon, K. W. (American Astronomical Society, 2013)
      The design and performance of a wide bandwidth linear polarization modulator based on the Faraday effect is described. Faraday Rotation Modulators (FRMs) are solid-state polarization switches that are capable of modulation ...

    • Time-Dependent Density-Functional Theory in Massively Parallel Computer Architectures: The Octopus Project 

      Andrade, Xavier; Alberdi-Rodriguez, Joseba; Strubbe, David A.; Oliveira, Micael J. T.; Nogueira, Fernando; Castro, Alberto; Muguerza, Javier; Arruabarrena, Agustin; Louie, Steven G.; Aspuru-Guzik, Alan; Rubio, Angel; Marques, Miguel A. L. (Institute of Physics, 2012)
      Octopus is a general-purpose density-functional theory (DFT) code, with a particular emphasis on the time-dependent version of DFT (TDDFT). In this paper we present the ongoing efforts to achieve the parallelization of ...